transaction.rs

// Rust Elements Library
// Written in 2018 by
//   Andrew Poelstra <apoelstra@blockstream.com>
//
// To the extent possible under law, the author(s) have dedicated all
// copyright and related and neighboring rights to this software to
// the public domain worldwide. This software is distributed without
// any warranty.
//
// You should have received a copy of the CC0 Public Domain Dedication
// along with this software.
// If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
//

//! # Transactions
//!

use crate::{
    confidential::{
        AssetBlindingFactor, AssetCommitment, Nonce, ValueBlindingFactor, ValueCommitment,
    },
    encode::{self, Decodable, Encodable, Error},
    issuance::AssetId,
    opcodes,
    script::Instruction,
    Script, Txid, Wtxid,
};
use bitcoin::{self, hashes::Hash, VarInt};
use std::{collections::HashMap, fmt, io};

/// Elements transaction
#[derive(Clone, Debug, Default, PartialEq, Eq, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct Transaction {
    /// Transaction version field (should always be 2)
    pub version: u32,
    /// Transaction locktime
    pub lock_time: u32,
    /// Vector of inputs
    pub input: Vec<TxIn>,
    /// Vector of outputs
    pub output: Vec<TxOut>,
}

/// A transaction input, which defines old coins to be consumed
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct TxIn {
    /// The reference to the previous output that is being used an an input
    pub previous_output: OutPoint,
    /// Flag indicating that `previous_outpoint` refers to something on the main chain
    pub is_pegin: bool,
    /// Flag indicating that `previous_outpoint` has an asset issuance attached
    pub has_issuance: bool,
    /// The script which pushes values on the stack which will cause
    /// the referenced output's script to accept
    pub script_sig: Script,
    /// The sequence number, which suggests to miners which of two
    /// conflicting transactions should be preferred, or 0xFFFFFFFF
    /// to ignore this feature. This is generally never used since
    /// the miner behaviour cannot be enforced.
    pub sequence: u32,
    /// Asset issuance data
    pub asset_issuance: AssetIssuance,
    /// Witness data - not deserialized/serialized as part of a `TxIn` object
    /// (rather as part of its containing transaction, if any) but is logically
    /// part of the txin.
    pub witness: TxInWitness,
}

/// Transaction output
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub enum TxOut {
    Explicit(ExplicitTxOut),
    Confidential(ConfidentialTxOut),
    Null(NullTxOut),
}

/// A reference to a transaction output
#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct OutPoint {
    /// The referenced transaction's txid
    pub txid: Txid,
    /// The index of the referenced output in its transaction's vout
    pub vout: u32,
}

impl OutPoint {
    /// Create a new outpoint.
    pub fn new(txid: Txid, vout: u32) -> OutPoint {
        OutPoint { txid, vout }
    }
}

/// Description of an asset issuance in a transaction input
#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub enum AssetIssuance {
    Explicit(ExplicitAssetIssuance),
    Confidential(ConfidentialAssetIssuance),
    Null(NullAssetIssuance),
}

/// Transaction input witness
#[derive(Clone, Default, PartialEq, Eq, Debug, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct TxInWitness {
    /// Amount rangeproof
    pub amount_rangeproof: Vec<u8>,
    /// Rangeproof for inflation keys
    pub inflation_keys_rangeproof: Vec<u8>,
    /// Traditional script witness
    pub script_witness: Vec<Vec<u8>>,
    /// Pegin witness, basically the same thing
    pub pegin_witness: Vec<Vec<u8>>,
}

#[derive(Clone, PartialEq, Eq, Debug, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct ExplicitTxOut {
    /// Committed asset
    pub asset: ExplicitAsset,
    /// Committed amount
    pub value: ExplicitValue,
    /// Scriptpubkey
    pub script_pubkey: Script,
    /// There should be no such thing as a nonce for an explicit
    /// output, but Elements will deserialize such a thing and even
    /// produce it.
    pub nonce: Option<Nonce>,
}

/// Transaction output
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct ConfidentialTxOut {
    /// Committed asset
    pub asset: AssetCommitment,
    /// Committed amount
    pub value: ValueCommitment,
    /// Nonce (ECDH key passed to recipient)
    ///
    /// TODO: I think this is only `None` if we spend an asset issuance.
    pub nonce: Option<Nonce>,
    /// Scriptpubkey
    pub script_pubkey: Script,
    /// Witness data - not deserialized/serialized as part of a `TxIn` object
    /// (rather as part of its containing transaction, if any) but is logically
    /// part of the txin.
    pub witness: TxOutWitness,
}

#[derive(Clone, PartialEq, Eq, Debug, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct NullTxOut {
    pub script_pubkey: Script,
}

#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct ExplicitAssetIssuance {
    /// Zero for a new asset issuance; otherwise a blinding factor for the input
    pub asset_blinding_nonce: [u8; 32],
    /// Freeform entropy field
    pub asset_entropy: [u8; 32],
    /// Amount of asset to issue
    pub amount: ExplicitValue,
    /// Amount of inflation keys to issue
    pub inflation_keys: ExplicitValue,
}

#[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct ConfidentialAssetIssuance {
    /// Zero for a new asset issuance; otherwise a blinding factor for the input
    pub asset_blinding_nonce: [u8; 32],
    /// Freeform entropy field
    pub asset_entropy: [u8; 32],
    /// Amount of asset to issue
    pub amount: ValueCommitment,
    /// Amount of inflation keys to issue
    pub inflation_keys: Option<ValueCommitment>,
}

#[derive(Copy, Clone, Default, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct NullAssetIssuance {
    /// Zero for a new asset issuance; otherwise a blinding factor for the input
    pub asset_blinding_nonce: [u8; 32],
    /// Freeform entropy field
    pub asset_entropy: [u8; 32],
}

#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash, PartialOrd, Ord)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate", transparent)
)]
pub struct ExplicitAsset(pub AssetId);

#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash, PartialOrd, Ord)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate", transparent)
)]
pub struct ExplicitValue(pub u64);

/// Transaction output witness
#[derive(Clone, Default, PartialEq, Eq, Debug, Hash)]
#[cfg_attr(
    feature = "serde",
    derive(serde::Serialize, serde::Deserialize),
    serde(crate = "serde_crate")
)]
pub struct TxOutWitness {
    /// Surjection proof showing that the asset commitment is legitimate
    pub surjection_proof: Vec<u8>,
    /// Rangeproof showing that the value commitment is legitimate
    pub rangeproof: Vec<u8>,
}

/// Parsed data from a transaction input's pegin witness
#[derive(Copy, Clone, PartialEq, Eq, Debug, Hash)]
pub struct PeginData<'tx> {
    /// Reference to the pegin output on the mainchain
    pub outpoint: bitcoin::OutPoint,
    /// The value, in satoshis, of the pegin
    pub value: u64,
    /// Asset type being pegged in
    pub asset: AssetId,
    /// Hash of genesis block of originating blockchain
    pub genesis_hash: bitcoin::BlockHash,
    /// The claim script that we should hash to tweak our address. Unparsed
    /// to avoid unnecessary allocation and copying. Typical use is simply
    /// to feed it raw into a hash function.
    pub claim_script: &'tx [u8],
    /// Mainchain transaction; not parsed to save time/memory since the
    /// parsed transaction is typically not useful without auxillary
    /// data (e.g. knowing how to compute pegin addresses for the
    /// sidechain).
    pub tx: &'tx [u8],
    /// Merkle proof of transaction inclusion; also not parsed
    pub merkle_proof: &'tx [u8],
    /// The Bitcoin block that the pegin output appears in; scraped
    /// from the transaction inclusion proof
    pub referenced_block: bitcoin::BlockHash,
}

/// Information about a pegout
#[derive(Clone, PartialEq, Eq, Debug, Hash)]
pub struct PegoutData<'txo> {
    /// Amount to peg out
    pub value: u64,
    /// Asset of pegout
    pub asset: ExplicitAsset,
    /// Genesis hash of the target blockchain
    pub genesis_hash: bitcoin::BlockHash,
    /// Scriptpubkey to create on the target blockchain
    pub script_pubkey: Script,
    /// Remaining pegout data used by some forks of Elements
    pub extra_data: Vec<&'txo [u8]>,
}

impl Transaction {
    /// Whether the transaction is a coinbase tx
    pub fn is_coinbase(&self) -> bool {
        self.input.len() == 1 && self.input[0].is_coinbase()
    }

    /// Determines whether a transaction has any non-null witnesses
    pub fn has_witness(&self) -> bool {
        self.input.iter().any(|i| !i.witness.is_empty())
            || self.output.iter().any(|o| o.has_witness())
    }

    /// Get the "weight" of this transaction; roughly equivalent to BIP141, in that witness data is
    /// counted as 1 while non-witness data is counted as 4.
    pub fn get_weight(&self) -> usize {
        self.get_scaled_size(4)
    }

    /// Gets the regular byte-wise consensus-serialized size of this transaction.
    pub fn get_size(&self) -> usize {
        self.get_scaled_size(1)
    }

    fn get_scaled_size(&self, scale_factor: usize) -> usize {
        let witness_flag = self.has_witness();

        let input_weight = self
            .input
            .iter()
            .map(|input| {
                scale_factor
                    * (32 + 4 + 4 + // output + nSequence
                    VarInt(input.script_sig.len() as u64).len() as usize +
                    input.script_sig.len() + if input.has_issuance() {
                    input.asset_issuance.encoded_length()
                } else {
                    0
                }) + if witness_flag {
                    input.witness.encoded_length()
                } else {
                    0
                }
            })
            .sum::<usize>();

        let output_weight = self
            .output
            .iter()
            .map(|output| {
                scale_factor * output.encoded_length()
                    + if witness_flag {
                        output.witness_length()
                    } else {
                        0
                    }
            })
            .sum::<usize>();

        scale_factor
            * (
                4 + // version
                4 + // locktime
                VarInt(self.input.len() as u64).len() as usize +
                VarInt(self.output.len() as u64).len() as usize +
                1
                // segwit flag byte (note this is *not* witness data in Elements)
            )
            + input_weight
            + output_weight
    }

    /// The txid of the transaction.
    pub fn txid(&self) -> Txid {
        let mut enc = bitcoin::Txid::engine();
        self.version.consensus_encode(&mut enc).unwrap();
        0u8.consensus_encode(&mut enc).unwrap();
        self.input.consensus_encode(&mut enc).unwrap();
        self.output.consensus_encode(&mut enc).unwrap();
        self.lock_time.consensus_encode(&mut enc).unwrap();
        Txid::from_engine(enc)
    }

    /// Get the witness txid of the transaction.
    pub fn wtxid(&self) -> Wtxid {
        let mut enc = Txid::engine();
        self.consensus_encode(&mut enc).unwrap();
        Wtxid::from_engine(enc)
    }

    /// Get the total transaction fee in the given asset.
    pub fn fee_in(&self, asset: AssetId) -> u64 {
        // is_fee checks for explicit asset and value, so we can unwrap them here.
        self.output
            .iter()
            .filter(|o| o.is_fee())
            .filter_map(|o| o.as_explicit())
            .filter(|e| e.asset.0 == asset)
            .map(|o| o.value.0)
            .sum()
    }

    /// Get all fees in all assets.
    pub fn all_fees(&self) -> HashMap<AssetId, u64> {
        let mut fees = HashMap::new();
        for out in self
            .output
            .iter()
            .filter(|o| o.is_fee())
            .filter_map(|o| o.as_explicit())
        {
            // is_fee checks for explicit asset and value, so we can unwrap them here.
            let asset = out.asset.0;
            let entry = fees.entry(asset).or_insert(0);
            *entry += out.value.0;
        }
        fees
    }
}

impl TxIn {
    /// Whether the input is a coinbase
    pub fn is_coinbase(&self) -> bool {
        self.previous_output == OutPoint::default()
    }

    /// Whether the input is a pegin
    pub fn is_pegin(&self) -> bool {
        self.is_pegin
    }

    /// Extracts witness data from a pegin. Will return `None` if any data
    /// cannot be parsed. The combination of `is_pegin()` returning `true`
    /// and `pegin_data()` returning `None` indicates an invalid transaction.
    pub fn pegin_data(&self) -> Option<PeginData> {
        if !self.is_pegin {
            return None;
        }

        if self.witness.pegin_witness.len() != 6 {
            return None;
        }

        macro_rules! opt_try (
            ($res:expr) => { match $res { Ok(x) => x, Err(_) => return None } }
        );

        Some(PeginData {
            // Cast of an elements::OutPoint to a bitcoin::OutPoint
            outpoint: bitcoin::OutPoint {
                txid: bitcoin::Txid::from(self.previous_output.txid.as_hash()),
                vout: self.previous_output.vout,
            },
            value: opt_try!(bitcoin::consensus::deserialize(
                &self.witness.pegin_witness[0]
            )),
            asset: opt_try!(encode::deserialize(&self.witness.pegin_witness[1])),
            genesis_hash: opt_try!(bitcoin::consensus::deserialize(
                &self.witness.pegin_witness[2]
            )),
            claim_script: &self.witness.pegin_witness[3],
            tx: &self.witness.pegin_witness[4],
            merkle_proof: &self.witness.pegin_witness[5],
            referenced_block: bitcoin::BlockHash::hash(&self.witness.pegin_witness[5][0..80]),
        })
    }

    /// Helper to determine whether an input has an asset issuance attached
    pub fn has_issuance(&self) -> bool {
        self.has_issuance
    }
}

#[derive(Debug)]
pub struct NoBlindingKeyInAddress;

impl fmt::Display for NoBlindingKeyInAddress {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "the address is missing a blinding key")
    }
}

impl std::error::Error for NoBlindingKeyInAddress {}

impl TxOut {
    /// Creates a new confidential output that is **not** the last one in the transaction.
    #[cfg(feature = "wally-sys")]
    pub fn new_not_last_confidential<R, C>(
        rng: &mut R,
        secp: &bitcoin::secp256k1::Secp256k1<C>,
        value: u64,
        address: crate::Address,
        asset: AssetId,
        inputs: &[(
            AssetId,
            u64,
            AssetCommitment,
            AssetBlindingFactor,
            ValueBlindingFactor,
        )],
    ) -> Result<(Self, AssetBlindingFactor, ValueBlindingFactor), NoBlindingKeyInAddress>
    where
        R: bitcoin::secp256k1::rand::RngCore + bitcoin::secp256k1::rand::CryptoRng,
        C: bitcoin::secp256k1::Signing,
    {
        let out_abf = AssetBlindingFactor::new(rng);
        let out_asset = AssetCommitment::new(asset, out_abf);

        let out_vbf = ValueBlindingFactor::random(rng);
        let value_commitment = ValueCommitment::new(value, out_asset, out_vbf);

        let (nonce, sender_ephemeral_sk) = Nonce::new(rng, secp);

        let range_proof = crate::wally::asset_rangeproof(
            value,
            address
                .blinding_pubkey
                .ok_or_else(|| NoBlindingKeyInAddress)?,
            sender_ephemeral_sk,
            asset,
            out_abf,
            out_vbf,
            value_commitment,
            &address.script_pubkey(),
            out_asset,
            1,
            0,
            52,
        );

        let inputs = inputs
            .iter()
            .copied()
            .map(|(id, _, asset, abf, _)| (id, abf, asset))
            .collect::<Vec<_>>();

        let surjection_proof =
            crate::wally::asset_surjectionproof(rng, asset, out_abf, out_asset, &inputs);

        let txout = TxOut::Confidential(ConfidentialTxOut {
            asset: out_asset,
            value: value_commitment,
            nonce: Some(nonce),
            script_pubkey: address.script_pubkey(),
            witness: TxOutWitness {
                surjection_proof,
                rangeproof: range_proof,
            },
        });

        Ok((txout, out_abf, out_vbf))
    }

    /// Creates a new confidential output that IS the last one in the transaction.
    #[cfg(feature = "wally-sys")]
    pub fn new_last_confidential<R, C>(
        rng: &mut R,
        secp: &bitcoin::secp256k1::Secp256k1<C>,
        value: u64,
        address: crate::Address,
        asset: AssetId,
        inputs: &[(
            AssetId,
            u64,
            AssetCommitment,
            AssetBlindingFactor,
            ValueBlindingFactor,
        )],
        outputs: &[(u64, AssetBlindingFactor, ValueBlindingFactor)],
    ) -> Result<Self, NoBlindingKeyInAddress>
    where
        R: bitcoin::secp256k1::rand::RngCore + bitcoin::secp256k1::rand::CryptoRng,
        C: bitcoin::secp256k1::Signing,
    {
        let (surjection_proof_inputs, value_blind_inputs) = inputs
            .iter()
            .copied()
            .map(|(id, value, asset, abf, vbf)| ((id, abf, asset), (value, abf, vbf)))
            .unzip::<_, _, Vec<_>, Vec<_>>();

        let out_abf = AssetBlindingFactor::new(rng);
        let out_asset = AssetCommitment::new(asset, out_abf);

        let out_vbf = ValueBlindingFactor::last(value, out_abf, &value_blind_inputs, &outputs);
        let value_commitment = ValueCommitment::new(value, out_asset, out_vbf);

        let (nonce, sender_ephemeral_sk) = Nonce::new(rng, secp);

        let range_proof = crate::wally::asset_rangeproof(
            value,
            address
                .blinding_pubkey
                .ok_or_else(|| NoBlindingKeyInAddress)?,
            sender_ephemeral_sk,
            asset,
            out_abf,
            out_vbf,
            value_commitment,
            &address.script_pubkey(),
            out_asset,
            1,
            0,
            52,
        );

        let surjection_proof = crate::wally::asset_surjectionproof(
            rng,
            asset,
            out_abf,
            out_asset,
            &surjection_proof_inputs,
        );

        let txout = TxOut::Confidential(ConfidentialTxOut {
            asset: out_asset,
            value: value_commitment,
            nonce: Some(nonce),
            script_pubkey: address.script_pubkey(),
            witness: TxOutWitness {
                surjection_proof,
                rangeproof: range_proof,
            },
        });

        Ok(txout)
    }

    pub fn new_explicit(asset: AssetId, value: u64, script_pubkey: Script) -> Self {
        TxOut::Explicit(ExplicitTxOut {
            asset: ExplicitAsset(asset),
            value: ExplicitValue(value),
            script_pubkey,
            nonce: None,
        })
    }

    pub fn new_fee(asset: AssetId, value: u64) -> Self {
        TxOut::new_explicit(asset, value, Script::default())
    }

    pub fn script_pubkey(&self) -> &Script {
        match self {
            Self::Null(inner) => &inner.script_pubkey,
            Self::Confidential(inner) => &inner.script_pubkey,
            Self::Explicit(inner) => &inner.script_pubkey,
        }
    }

    pub fn as_explicit(&self) -> Option<&ExplicitTxOut> {
        match self {
            Self::Explicit(explicit) => Some(&explicit),
            _ => None,
        }
    }

    pub fn into_explicit(self) -> Option<ExplicitTxOut> {
        match self {
            Self::Explicit(explicit) => Some(explicit),
            _ => None,
        }
    }

    pub fn as_confidential(&self) -> Option<&ConfidentialTxOut> {
        match self {
            Self::Confidential(confidential) => Some(&confidential),
            _ => None,
        }
    }

    pub fn into_confidential(self) -> Option<ConfidentialTxOut> {
        match self {
            Self::Confidential(confidential) => Some(confidential),
            _ => None,
        }
    }

    pub fn has_witness(&self) -> bool {
        match self {
            Self::Confidential(confidential) => !confidential.witness.is_empty(),
            _ => false,
        }
    }

    pub fn encoded_length(&self) -> usize {
        match self {
            Self::Confidential(inner) => inner.encoded_length(),
            Self::Explicit(inner) => inner.encoded_length(),
            Self::Null(inner) => inner.encoded_length(),
        }
    }

    pub fn witness_length(&self) -> usize {
        match self {
            Self::Confidential(ConfidentialTxOut { witness, .. }) => witness.encoded_length(),
            _ => TxOutWitness::default().encoded_length(),
        }
    }

    /// Whether this data represents nulldata (OP_RETURN followed by pushes,
    /// not necessarily minimal)
    pub fn is_null_data(&self) -> bool {
        let mut iter = self.script_pubkey().instructions();
        if iter.next() == Some(Ok(Instruction::Op(opcodes::all::OP_RETURN))) {
            for push in iter {
                match push {
                    Ok(Instruction::Op(op))
                        if op.into_u8() > opcodes::all::OP_PUSHNUM_16.into_u8() =>
                    {
                        return false;
                    }
                    Err(_) => return false,
                    _ => {}
                }
            }
            true
        } else {
            false
        }
    }

    /// Whether this output is a pegout, which is a subset of nulldata with the
    /// following extra rules: (a) there must be at least 2 pushes, the first of
    /// which must be 32 bytes and the second of which must be nonempty; (b) all
    /// pushes must use a push opcode rather than a numeric or reserved opcode
    pub fn is_pegout(&self) -> bool {
        self.pegout_data().is_some()
    }

    /// If this output is a pegout, returns the destination genesis block,
    /// the destination script pubkey, and any additional data
    pub fn pegout_data(&self) -> Option<PegoutData> {
        let txout = match self {
            Self::Explicit(txout) => Some(txout),
            _ => None,
        }?;

        // Must be NULLDATA
        if !self.is_null_data() {
            return None;
        }

        let value = txout.value;

        let mut iter = self.script_pubkey().instructions();

        iter.next(); // Skip OP_RETURN

        // Parse destination chain's genesis block
        let genesis_hash = if let Some(Ok(Instruction::PushBytes(data))) = iter.next() {
            if let Ok(hash) = bitcoin::BlockHash::from_slice(data) {
                hash
            } else {
                return None;
            }
        } else {
            return None;
        };

        // Parse destination scriptpubkey
        let script_pubkey = if let Some(Ok(Instruction::PushBytes(data))) = iter.next() {
            if data.is_empty() {
                return None;
            } else {
                Script::from(data.to_owned())
            }
        } else {
            return None;
        };

        // Return everything
        let mut found_non_data_push = false;
        let remainder = iter
            .filter_map(|x| {
                if let Ok(Instruction::PushBytes(data)) = x {
                    Some(data)
                } else {
                    found_non_data_push = true;
                    None
                }
            })
            .collect();

        if found_non_data_push {
            None
        } else {
            Some(PegoutData {
                asset: txout.asset,
                value: value.0,
                genesis_hash,
                script_pubkey,
                extra_data: remainder,
            })
        }
    }

    /// Whether or not this output is a fee output
    pub fn is_fee(&self) -> bool {
        self.script_pubkey().is_empty() && matches!(self, Self::Explicit(_))
    }

    /// Extracts the minimum value from the rangeproof, if there is one, or returns 0.
    pub fn minimum_value(&self) -> u64 {
        let min_value = if self.script_pubkey().is_op_return() {
            0
        } else {
            1
        };

        match self {
            Self::Null { .. } => min_value,
            Self::Explicit(explicit) => explicit.value.0,
            Self::Confidential(ConfidentialTxOut { witness, .. }) => {
                if witness.rangeproof.is_empty() {
                    min_value
                } else {
                    debug_assert!(witness.rangeproof.len() > 10);

                    let has_nonzero_range = witness.rangeproof[0] & 64 == 64;
                    let has_min = witness.rangeproof[0] & 32 == 32;

                    if !has_min {
                        min_value
                    } else if has_nonzero_range {
                        bitcoin::consensus::deserialize::<u64>(&witness.rangeproof[2..10])
                            .expect("any 8 bytes is a u64")
                            .swap_bytes() // min-value is BE
                    } else {
                        bitcoin::consensus::deserialize::<u64>(&witness.rangeproof[1..9])
                            .expect("any 8 bytes is a u64")
                            .swap_bytes() // min-value is BE
                    }
                }
            }
        }
    }
}

impl AssetIssuance {
    pub fn encoded_length(&self) -> usize {
        match self {
            AssetIssuance::Null(inner) => inner.encoded_length(),
            AssetIssuance::Explicit(inner) => inner.encoded_length(),
            AssetIssuance::Confidential(inner) => inner.encoded_length(),
        }
    }
}

impl ExplicitAssetIssuance {
    pub fn encoded_length(&self) -> usize {
        32 + 32 + self.amount.encoded_length() + self.inflation_keys.encoded_length()
    }
}

impl ConfidentialAssetIssuance {
    pub fn encoded_length(&self) -> usize {
        32 + 32
            + self.amount.encoded_length()
            + match self.inflation_keys {
                Some(keys) => keys.encoded_length(),
                None => 1,
            }
    }
}

impl NullAssetIssuance {
    pub fn encoded_length(&self) -> usize {
        32 + 32 + 1 + 1
    }
}

impl TxInWitness {
    /// Whether this witness is null
    pub fn is_empty(&self) -> bool {
        self.amount_rangeproof.is_empty()
            && self.inflation_keys_rangeproof.is_empty()
            && self.script_witness.is_empty()
            && self.pegin_witness.is_empty()
    }

    pub fn encoded_length(&self) -> usize {
        let amount_rp_len = self.amount_rangeproof.len();
        let inflation_keys_rp_len = self.inflation_keys_rangeproof.len();
        let script_w = &self.script_witness;
        let pegin_w = &self.pegin_witness;

        let amount_enc_length = VarInt(amount_rp_len as u64).len() as usize + amount_rp_len;
        let inflation_keys_enc_length =
            VarInt(inflation_keys_rp_len as u64).len() as usize + inflation_keys_rp_len;
        let script_w_enc_length = VarInt(script_w.len() as u64).len() as usize
            + script_w
                .iter()
                .map(|wit| VarInt(wit.len() as u64).len() as usize + wit.len())
                .sum::<usize>();
        let pegin_w_enc_length = VarInt(pegin_w.len() as u64).len() as usize
            + pegin_w
                .iter()
                .map(|wit| VarInt(wit.len() as u64).len() as usize + wit.len())
                .sum::<usize>();

        amount_enc_length + inflation_keys_enc_length + script_w_enc_length + pegin_w_enc_length
    }
}

impl Default for AssetIssuance {
    fn default() -> Self {
        Self::Null(NullAssetIssuance::default())
    }
}

impl Encodable for ExplicitAssetIssuance {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        Ok(self.asset_blinding_nonce.consensus_encode(&mut s)?
            + self.asset_entropy.consensus_encode(&mut s)?
            + self.amount.consensus_encode(&mut s)?
            + self.inflation_keys.consensus_encode(&mut s)?)
    }
}

impl Encodable for ConfidentialAssetIssuance {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        Ok(self.asset_blinding_nonce.consensus_encode(&mut s)?
            + self.asset_entropy.consensus_encode(&mut s)?
            + self.amount.consensus_encode(&mut s)?
            + match self.inflation_keys {
                Some(keys) => keys.consensus_encode(&mut s)?,
                None => 0u8.consensus_encode(&mut s)?,
            })
    }
}

impl Encodable for NullAssetIssuance {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        Ok(self.asset_blinding_nonce.consensus_encode(&mut s)?
            + self.asset_entropy.consensus_encode(&mut s)?
            + 0u8.consensus_encode(&mut s)?
            + 0u8.consensus_encode(&mut s)?)
    }
}

impl Encodable for AssetIssuance {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        match self {
            AssetIssuance::Confidential(inner) => inner.consensus_encode(&mut s),
            AssetIssuance::Explicit(inner) => inner.consensus_encode(&mut s),
            AssetIssuance::Null(inner) => inner.consensus_encode(&mut s),
        }
    }
}

impl Decodable for AssetIssuance {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<Self, Error> {
        let asset_blinding_nonce = Decodable::consensus_decode(&mut d)?;
        let asset_entropy = Decodable::consensus_decode(&mut d)?;

        let buffer = d.fill_buf()?;

        if buffer.is_empty() {
            return Err(Error::UnexpectedEOF);
        }

        Ok(match buffer[0] {
            0 => {
                let amount_tag = u8::consensus_decode(&mut d)?;
                if amount_tag != 0 {
                    return Err(Error::InvalidTag {
                        expected: 0,
                        got: amount_tag,
                    });
                }

                let keys_tag = u8::consensus_decode(&mut d)?;
                if keys_tag != 0 {
                    return Err(Error::InvalidTag {
                        expected: 0,
                        got: keys_tag,
                    });
                }

                AssetIssuance::Null(NullAssetIssuance {
                    asset_blinding_nonce,
                    asset_entropy,
                })
            }
            1 => AssetIssuance::Explicit(ExplicitAssetIssuance {
                asset_blinding_nonce,
                asset_entropy,
                amount: Decodable::consensus_decode(&mut d)?,
                inflation_keys: Decodable::consensus_decode(&mut d)?,
            }),
            _ => AssetIssuance::Confidential(ConfidentialAssetIssuance {
                asset_blinding_nonce,
                asset_entropy,
                amount: Decodable::consensus_decode(&mut d)?,
                inflation_keys: {
                    let buffer = d.fill_buf()?;

                    if buffer.is_empty() {
                        return Err(Error::UnexpectedEOF);
                    }

                    if buffer[0] == 0 {
                        d.consume(1);
                        None
                    } else {
                        Some(Decodable::consensus_decode(&mut d)?)
                    }
                },
            }),
        })
    }
}

impl Default for OutPoint {
    /// Coinbase outpoint
    fn default() -> OutPoint {
        OutPoint {
            txid: Txid::default(),
            vout: 0xffffffff,
        }
    }
}

impl Encodable for OutPoint {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        Ok(self.txid.consensus_encode(&mut s)? + self.vout.consensus_encode(&mut s)?)
    }
}

impl Decodable for OutPoint {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<OutPoint, encode::Error> {
        let txid = Txid::consensus_decode(&mut d)?;
        let vout = u32::consensus_decode(&mut d)?;
        Ok(OutPoint { txid, vout })
    }
}

impl fmt::Display for OutPoint {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("[elements]")?;
        write!(f, "{}:{}", self.txid, self.vout)
    }
}

impl ::std::str::FromStr for OutPoint {
    type Err = bitcoin::blockdata::transaction::ParseOutPointError;
    fn from_str(mut s: &str) -> Result<Self, Self::Err> {
        if s.starts_with("[elements]") {
            s = &s[10..];
        }
        let bitcoin_outpoint = bitcoin::OutPoint::from_str(s)?;
        Ok(OutPoint {
            txid: Txid::from(bitcoin_outpoint.txid.as_hash()),
            vout: bitcoin_outpoint.vout,
        })
    }
}

impl_consensus_encoding!(
    TxInWitness,
    amount_rangeproof,
    inflation_keys_rangeproof,
    script_witness,
    pegin_witness
);

impl Encodable for TxIn {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        let mut ret = 0;
        let mut vout = self.previous_output.vout;
        if self.is_pegin {
            vout |= 1 << 30;
        }
        if self.has_issuance {
            vout |= 1 << 31;
        }
        ret += self.previous_output.txid.consensus_encode(&mut s)?;
        ret += vout.consensus_encode(&mut s)?;
        ret += self.script_sig.consensus_encode(&mut s)?;
        ret += self.sequence.consensus_encode(&mut s)?;
        if self.has_issuance() {
            ret += self.asset_issuance.consensus_encode(&mut s)?;
        }
        Ok(ret)
    }
}

impl Decodable for TxIn {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<TxIn, encode::Error> {
        let mut outp = OutPoint::consensus_decode(&mut d)?;
        let script_sig = Script::consensus_decode(&mut d)?;
        let sequence = u32::consensus_decode(&mut d)?;
        let issuance;
        let is_pegin;
        let has_issuance;
        // Pegin/issuance flags are encoded into the high bits of `vout`, *except*
        // if vout is all 1's; this indicates a coinbase transaction
        if outp.vout == 0xffffffff {
            is_pegin = false;
            has_issuance = false;
        } else {
            is_pegin = outp.vout & (1 << 30) != 0;
            has_issuance = outp.vout & (1 << 31) != 0;
            outp.vout &= !((1 << 30) | (1 << 31));
        }
        if has_issuance {
            issuance = AssetIssuance::consensus_decode(&mut d)?;
        } else {
            issuance = AssetIssuance::default();
        }
        Ok(TxIn {
            previous_output: outp,
            is_pegin,
            has_issuance,
            script_sig,
            sequence,
            asset_issuance: issuance,
            witness: TxInWitness::default(),
        })
    }
}

impl_consensus_encoding!(TxOutWitness, surjection_proof, rangeproof);

impl TxOutWitness {
    /// Whether this witness is null
    pub fn is_empty(&self) -> bool {
        self.surjection_proof.is_empty() && self.rangeproof.is_empty()
    }

    pub fn encoded_length(&self) -> usize {
        let sp_len = self.surjection_proof.len();
        let rp_len = self.rangeproof.len();

        let sp_enc_length = VarInt(sp_len as u64).len() + sp_len;
        let rp_enc_length = VarInt(rp_len as u64).len() + rp_len;

        sp_enc_length + rp_enc_length
    }
}

impl NullTxOut {
    pub fn encoded_length(&self) -> usize {
        1 + 1
            + 1
            + VarInt(self.script_pubkey.len() as u64).len() as usize
            + self.script_pubkey.len()
    }
}

impl Encodable for NullTxOut {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        Ok(0u8.consensus_encode(&mut s)?
            + 0u8.consensus_encode(&mut s)?
            + 0u8.consensus_encode(&mut s)?
            + self.script_pubkey.consensus_encode(&mut s)?)
    }
}

impl Decodable for NullTxOut {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<NullTxOut, encode::Error> {
        let asset_tag = u8::consensus_decode(&mut d)?;
        let value_tag = u8::consensus_decode(&mut d)?;
        let nonce_tag = u8::consensus_decode(&mut d)?;

        if asset_tag != 0 {
            return Err(Error::InvalidTag {
                expected: 0,
                got: asset_tag,
            });
        }
        if value_tag != 0 {
            return Err(Error::InvalidTag {
                expected: 0,
                got: value_tag,
            });
        }
        if nonce_tag != 0 {
            return Err(Error::InvalidTag {
                expected: 0,
                got: nonce_tag,
            });
        }

        Ok(NullTxOut {
            script_pubkey: Decodable::consensus_decode(&mut d)?,
        })
    }
}

impl ExplicitTxOut {
    pub fn encoded_length(&self) -> usize {
        self.asset.encoded_length()
            + self.value.encoded_length()
            + 1 // nonce
            + VarInt(self.script_pubkey.len() as u64).len() as usize
            + self.script_pubkey.len()
    }
}

impl ExplicitValue {
    pub fn encoded_length(&self) -> usize {
        9
    }
}

impl Encodable for ExplicitValue {
    fn consensus_encode<W: io::Write>(&self, mut e: W) -> Result<usize, Error> {
        Ok(1u8.consensus_encode(&mut e)? + self.0.swap_bytes().consensus_encode(&mut e)?)
    }
}

impl Decodable for ExplicitValue {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<Self, Error> {
        let value_tag = u8::consensus_decode(&mut d)?;
        if value_tag != 1 {
            return Err(Error::InvalidTag {
                expected: 1,
                got: value_tag,
            });
        }

        let value = u64::consensus_decode(&mut d)?.swap_bytes();

        Ok(ExplicitValue(value))
    }
}

impl ExplicitAsset {
    pub fn encoded_length(&self) -> usize {
        33
    }
}

impl Encodable for ExplicitAsset {
    fn consensus_encode<W: io::Write>(&self, mut e: W) -> Result<usize, Error> {
        Ok(1u8.consensus_encode(&mut e)? + self.0.consensus_encode(&mut e)?)
    }
}

impl Decodable for ExplicitAsset {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<Self, Error> {
        let asset_tag = u8::consensus_decode(&mut d)?;
        if asset_tag != 1 {
            return Err(Error::InvalidTag {
                expected: 1,
                got: asset_tag,
            });
        }

        let value = Decodable::consensus_decode(&mut d)?;

        Ok(ExplicitAsset(value))
    }
}

impl ConfidentialTxOut {
    pub fn encoded_length(&self) -> usize {
        self.asset.encoded_length()
            + self.value.encoded_length()
            + self.nonce.map(|n| n.encoded_length()).unwrap_or(1)
            + VarInt(self.script_pubkey.len() as u64).len() as usize
            + self.script_pubkey.len()
    }

    #[cfg(feature = "wally-sys")]
    pub fn unblind(
        &self,
        blinding_key: bitcoin::secp256k1::SecretKey,
    ) -> Result<UnblindedTxOut, UnblindError> {
        let sender_ephemeral_pk = self.nonce.ok_or(UnblindError::MissingNonce)?.commitment();
        let sender_ephemeral_pk = bitcoin::secp256k1::PublicKey::from_slice(&sender_ephemeral_pk)
            .map_err(|_| UnblindError::InvalidPublicKey)?;

        let (unblinded_asset, abf, vbf, value_out) = crate::wally::asset_unblind(
            sender_ephemeral_pk,
            blinding_key,
            &self.witness.rangeproof,
            self.value,
            &self.script_pubkey,
            self.asset,
        )
        .map_err(|_| UnblindError::Wally)?;

        Ok(UnblindedTxOut {
            asset: unblinded_asset,
            asset_blinding_factor: abf,
            value_blinding_factor: vbf,
            value: value_out,
        })
    }
}

#[derive(Debug)]
pub struct UnblindedTxOut {
    pub asset: AssetId,
    pub value: u64,
    pub asset_blinding_factor: AssetBlindingFactor,
    pub value_blinding_factor: ValueBlindingFactor,
}

#[cfg(feature = "wally-sys")]
#[derive(Debug)]
pub enum UnblindError {
    MissingNonce,
    InvalidPublicKey,
    Wally,
}

#[cfg(feature = "wally-sys")]
impl fmt::Display for UnblindError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
        match self {
            UnblindError::MissingNonce => write!(f, "no nonce in txout"),
            UnblindError::InvalidPublicKey => write!(f, "failed to create public key from nonce"),
            UnblindError::Wally => write!(f, "libwally error"),
        }
    }
}

// TODO: Implement source
#[cfg(feature = "wally-sys")]
impl std::error::Error for UnblindError {}

impl Encodable for TxOut {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        Ok(match self {
            Self::Null(inner) => inner.consensus_encode(&mut s)?,
            Self::Confidential(inner) => inner.consensus_encode(&mut s)?,
            Self::Explicit(inner) => inner.consensus_encode(&mut s)?,
        })
    }
}

impl Encodable for ConfidentialTxOut {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        Ok(self.asset.consensus_encode(&mut s)?
            + self.value.consensus_encode(&mut s)?
            + match self.nonce {
                Some(nonce) => nonce.consensus_encode(&mut s)?,
                None => 0u8.consensus_encode(&mut s)?,
            }
            + self.script_pubkey.consensus_encode(&mut s)?)
    }
}

impl Decodable for ConfidentialTxOut {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<Self, Error> {
        let asset = Decodable::consensus_decode(&mut d)?;
        let value = Decodable::consensus_decode(&mut d)?;
        let buffer = d.fill_buf()?;

        if buffer.is_empty() {
            return Err(Error::UnexpectedEOF);
        }

        let nonce = if buffer[0] == 0 {
            d.consume(1); // consume the zero from the buffer
            None
        } else {
            Some(Decodable::consensus_decode(&mut d)?)
        };

        Ok(ConfidentialTxOut {
            asset,
            value,
            nonce,
            script_pubkey: Decodable::consensus_decode(&mut d)?,
            witness: TxOutWitness::default(),
        })
    }
}

impl Encodable for ExplicitTxOut {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        let asset = self.asset.consensus_encode(&mut s)?;
        let value = self.value.consensus_encode(&mut s)?;
        let nonce = match self.nonce {
            Some(nonce) => nonce.consensus_encode(&mut s)?,
            None => 0u8.consensus_encode(&mut s)?,
        };
        let script_pubkey = self.script_pubkey.consensus_encode(&mut s)?;

        Ok(asset + value + nonce + script_pubkey)
    }
}

impl Decodable for ExplicitTxOut {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<Self, Error> {
        let asset = Decodable::consensus_decode(&mut d)?;
        let value = Decodable::consensus_decode(&mut d)?;
        let nonce_tag = u8::consensus_decode(&mut d)?;

        let nonce = match nonce_tag {
            0 => None,
            2 | 3 => {
                let mut xcoor = [0u8; 32];
                d.read_exact(&mut xcoor)?;
                Some(Nonce::from_commitment(nonce_tag, &xcoor)?)
            }
            _ => {
                return Err(Error::InvalidTag {
                    expected: 0,
                    got: nonce_tag,
                })
            }
        };

        let script_pubkey = Decodable::consensus_decode(&mut d)?;

        Ok(ExplicitTxOut {
            asset,
            value,
            script_pubkey,
            nonce,
        })
    }
}

impl Decodable for TxOut {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<TxOut, encode::Error> {
        let buffer = d.fill_buf()?;

        if buffer.is_empty() {
            return Err(Error::UnexpectedEOF);
        }

        Ok(match buffer[0] {
            0 => TxOut::Null(Decodable::consensus_decode(&mut d)?),
            1 => TxOut::Explicit(Decodable::consensus_decode(&mut d)?),
            _ => TxOut::Confidential(Decodable::consensus_decode(&mut d)?),
        })
    }
}

impl Encodable for Transaction {
    fn consensus_encode<S: io::Write>(&self, mut s: S) -> Result<usize, encode::Error> {
        let mut ret = 0;
        ret += self.version.consensus_encode(&mut s)?;

        let wit_flag = self.has_witness();
        if wit_flag {
            ret += 1u8.consensus_encode(&mut s)?;
        } else {
            ret += 0u8.consensus_encode(&mut s)?;
        }
        ret += self.input.consensus_encode(&mut s)?;
        ret += self.output.consensus_encode(&mut s)?;
        ret += self.lock_time.consensus_encode(&mut s)?;

        if wit_flag {
            for i in &self.input {
                ret += i.witness.consensus_encode(&mut s)?;
            }
            let default_witness = TxOutWitness::default();
            for witness in self.output.iter().map(|o| {
                o.as_confidential()
                    .map(|c| &c.witness)
                    .unwrap_or(&default_witness)
            }) {
                ret += witness.consensus_encode(&mut s)?;
            }
        }
        Ok(ret)
    }
}

impl Decodable for Transaction {
    fn consensus_decode<D: io::BufRead>(mut d: D) -> Result<Transaction, encode::Error> {
        let version = u32::consensus_decode(&mut d)?;
        let wit_flag = u8::consensus_decode(&mut d)?;
        let mut input = Vec::<TxIn>::consensus_decode(&mut d)?;
        let mut output = Vec::<TxOut>::consensus_decode(&mut d)?;
        let lock_time = u32::consensus_decode(&mut d)?;

        match wit_flag {
            0 => Ok(Transaction {
                version,
                input,
                output,
                lock_time,
            }),
            1 => {
                for i in &mut input {
                    i.witness = Decodable::consensus_decode(&mut d)?;
                }
                for o in &mut output {
                    match o {
                        TxOut::Confidential(confidential) => {
                            confidential.witness = Decodable::consensus_decode(&mut d)?;
                        }
                        _ => {
                            let _garbage = TxOutWitness::consensus_decode(&mut d)?;
                        }
                    }
                }
                if input.iter().all(|input| input.witness.is_empty())
                    && output
                        .iter()
                        .filter_map(|o| o.as_confidential())
                        .all(|output| output.witness.is_empty())
                {
                    Err(encode::Error::ParseFailed(
                        "witness flag set but no witnesses were given",
                    ))
                } else {
                    Ok(Transaction {
                        version,
                        input,
                        output,
                        lock_time,
                    })
                }
            }
            _ => Err(encode::Error::ParseFailed("bad witness flag in tx")),
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::encode::{serialize, serialize_hex};
    use bitcoin::hashes::hex::FromHex;

    #[test]
    fn outpoint() {
        let txid = "d0a5c455ea7221dead9513596d2f97c09943bad81a386fe61a14a6cda060e422";
        let s = format!("{}:42", txid);
        let expected = OutPoint::new(Txid::from_hex(&txid).unwrap(), 42);
        let op = ::std::str::FromStr::from_str(&s).ok();
        assert_eq!(op, Some(expected));
        // roundtrip with elements prefix
        let op = ::std::str::FromStr::from_str(&expected.to_string()).ok();
        assert_eq!(op, Some(expected));
    }

    #[test]
    fn transaction() {
        // Simple transaction with explicit input (no scriptsig/witness) and explicit outputs
        let tx: Transaction = hex_deserialize!(
            "020000000001eb04b68e9a26d116046c76e8ff47332fb71dda90ff4bef5370f2\
             5226d3bc09fc0000000000feffffff0201230f4f5d4b7c6fa845806ee4f67713\
             459e1b69e8e60fcee2e4940c7a0d5de1b20100000002540bd71c001976a91448\
             633e2c0ee9495dd3f9c43732c47f4702a362c888ac01230f4f5d4b7c6fa84580\
             6ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b2010000000000000ce400\
             0000000000"
        );

        assert_eq!(
            tx.wtxid().to_string(),
            "758f784bdfa89b62c8b882542afb46074d3851a6da997199bcfb7cc6daed3cf2"
        );
        assert_eq!(
            tx.txid().to_string(),
            "758f784bdfa89b62c8b882542afb46074d3851a6da997199bcfb7cc6daed3cf2"
        );
        assert_eq!(tx.input.len(), 1);
        assert_eq!(tx.output.len(), 2);
        assert_eq!(tx.get_size(), serialize(&tx).len());
        assert_eq!(tx.get_weight(), tx.get_size() * 4);
        assert_eq!(tx.output[0].is_fee(), false);
        assert_eq!(tx.output[1].is_fee(), true);
        assert_eq!(
            tx.output[0].as_explicit().unwrap().value,
            ExplicitValue(9999996700)
        );
        assert_eq!(
            tx.output[1].as_explicit().unwrap().value,
            ExplicitValue(3300)
        );
        assert_eq!(tx.output[0].minimum_value(), 9999996700);
        assert_eq!(tx.output[1].minimum_value(), 3300);
        let fee_asset = "b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 3300);
        assert_eq!(tx.all_fees()[&fee_asset], 3300);

        // CT transaction with explicit input (with script witness) and confidential outputs
        let tx: Transaction = hex_deserialize!(
            "020000000101f23ceddac67cfbbc997199daa651384d0746fb2a5482b8c8629b\
             a8df4b788f75000000006b483045022100e0feb3e2f292000d67e24b821d87c9\
             532230dac1de428d6a0068c9f416583abf02200e76f072788dd411b2327267cd\
             91c6b1659809598cd4fae35be475efe1e4bbad01210201e15c23c021652d07c1\
             557b607ea0379fca0462aca840d6c33c4d4927524547feffffff030b60424a42\
             3335923c15ae387d95d4f80d944722020bfa55b9f0a0e67579e3c13c081c4f21\
             5239c77456d121eb73bd9914a9a6398fe369b4eb8f88a5f78e257fcaa303301e\
             e46349950886ae115c9556607fcda9381c2f72368f4b5286488c62aa0b081976\
             a9148bb6c4d5814d43fefb9e330575e326632136389c88ac0bd436b0539f5497\
             af792d7cb281f09b73d8a5abc198b3ce6239d79e68893e5e5d0923899fd35071\
             ba8a209d85b556d5747b6c35539c3b2f8631a27c0d477a1f45a603d1d350b8cb\
             f900f7666da66541bf6252fc4c162141ad49c670884c93c57db6ba1976a9148c\
             7ab6e0fca387d03643d4846f708bf39d47c1e988ac01230f4f5d4b7c6fa84580\
             6ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b2010000000000008e8000\
             00000000000000000043010001dc65ae13f76fde4a7172e0fb380b1a5cc8dc88\
             eaa0659e638a25eac8ae30d79bf93eb7e487eeee323e4ac8e3a2fe6523bdeba6\
             acce32b9b085f2286174c04655fd6c0a6020000000000000000178ad016b3e5d\
             8165423e56d8b37e3eaee96009b2f970043ccf65d61b5c3c1e1ef343e0c479bd\
             ba442717dc861c9591566010240b9d4607efb9252a5fcef05edf640e0bb6b606\
             729246ad07baa49d0d3b52042c65a03ca737744e45b2d2d6d177c36569ae9d6e\
             b4437305b169bbc59f85cabff3bc49a2d6d08c177cce3121a509d3c47961bd22\
             e35c932b79d4ec5ccaf913fac04034bfebdadbc4ff3127af96344b02ee6b967b\
             b08326cbe6a4e1c924485e64a8c0fdf70b98c99f38acaa15aa0adb2b5b7335ed\
             5502443891bcd657310347cbd928f40f38f1dec087a2b947c9cf7d304798f77b\
             bc4a2c843796b2d49acce91de4e88a0a9c261277df28ffc3320d7f7d64790f59\
             2ddded48a1068ef88271395fa5606389ef90856ddd6bd6710a8d27e0147983b5\
             dde2a7efae44e83ad02a3c3da04be43d5f2c05c205f1e17b48554c2177670f46\
             dbb6600bd2e6c75dd5ea2e1072c5f22483dcf05d8124e3f9063a5ddb179a29c2\
             3a2d15d6e89f2192f03dae5938f66fcdcff000c5a96ffd2920f23881880af721\
             53c96a56dd80c218bb48b44a18e54a8050ff32c869c1264ee574cdb4002f86e0\
             779c724d11dc4a768dbec1bd22054886f1fdf2e7347e4c247b829159d1375f88\
             1c6ce0a5c4da8534000e7fec3a980afb1edc99b725c29de80f260dcf144c873b\
             f589ae1812ef6cb05f2234f9c66c23e874a0d5d0dc52f2209e015bbcf74ee449\
             a397f6b0318c915b7e58dea5904abbe35285e90ccf548ad1f3f52f60c3b19b3c\
             d67644d633e68aef42d8ef1782f22a8edd0620f55f29070720ca7a078ac83e87\
             b9ebd2783ecad17dd854ef1bbd319f1a6d3a1e4931f9097422f5a3c4af037b99\
             e06c7610ee61102c6eea763af108e9a16b93b2dc0891658d5c6a197df6aae9b3\
             06b2c895d21c79cb6cb6dd85b4018b0a9fe7468336e3907eb4adcaf930cacc97\
             e8e951d2d6b25744a4143679bad1f31b210c9a2ed54b80d8f5d7dc1f1c985681\
             534c1926920cd683d95dca7e8ea285f9906d2e89cd8bfa76a98e38ee4b515252\
             2d55f79610fe8d5278fe6ed5866b5da4dcf330ea84307c34f30e1a66eb1934da\
             febb0074fc27c2ff73d8c0bae8416cc87bf611f81119aba9e2a911beaf3ac950\
             7e621fc1ed1cf15dfb31408cf55e2bfdd2880db2d3489a336d6f8348347648d8\
             82f9f376331e469e809115c6cc82468f363c910673e9ded172ded90a369e1cdd\
             135676f623e11a1531ed221177812b1ef0c65e5ca92c0df8de7fe664710f3228\
             a226e019c99607fe1395ecd5643e1c7ad8a132bf5131737cb970a7f0dabc0002\
             9755bf71b3f47bd69ba39b3ab104c74f04239f4919dca1dfce7c9c41cba9d449\
             073e106ebabe3c313b598ee8b11702ec46e9ee53fb9422f0326371898b8fa4c2\
             1a951684c687398e0bebd6f6fd91b829e8666b9a19a4273cfda0f34b8ecb902f\
             7adc6539fb9a0cba6f87a63a957acfb2dfa18973f4a3063668767b2be7803115\
             13c63f1814f082176f6a953f2ffaa49ec9b39fecc2eab603be7a969bb4c1dbeb\
             f8d39fa90f802d5ea52378b5025a19b64a8c2c2dd6a6133bd8d29730bd5724b5\
             bf50c158b238d1137082937ad91a176aaf91577868db7581b457c917e612b242\
             ce0065ad47e11dcdc1fc6158687142249bcf312497a547b6f43e795af7d4ae8c\
             d022e44e417987e35e83de21e39dcdf86b97bd421e6e61881a432fa2284f20be\
             80e32459443736b875d9036468ceb881589394441e2d10aa10b6c93332951e8b\
             a56f89fac70baf415b4511873c0f3e418ca4fe8954a28f1f7b5f590d34470119\
             f694e2712f184882d90396c8e6aa850eaa3c2ae51990543638c46c59512167a2\
             c5ad593532dc2142ffb6560476e4159213b9ef017ec75310d2e4624a405bb26f\
             7192a485a94890674928c9caa4a5819ca4ddcba8fa71afc1a6baf63f039452c8\
             fe994f8b63d58c876dfddd61a476345eaed4f66bdc0fcfc38d485c6a5b0e27d0\
             fbc50427ff591ba38d63445c01642cfbd7d4c032f2546a6fe80bc3b598362502\
             c552049523fe360c3bcf1cc572feb04386f97d55871dd8cea0393cdd964e7240\
             82adc98126e6f2fe1d576be4bf911e9aca70e35538175f8382bbcd614bbecc97\
             c9607ef25da2ff08a6e5b6f76cbe9ccb0e0fdc3528e3e2c3675a5c897d295bb7\
             6524ec8a73a70b97909368f44d92f9aceaef0b03f3dafa1faa89fc663a92da3c\
             19b4952463fac0e825e78cf046e266cfb9975af72e9d50d2c2cafee88fe2ceca\
             e2b1465fc07b280d83b66062dc9e7a372f81aec8e0bb9e97877814a5a6813c67\
             746e35cd068d45d8664528bd00d5a306a5319e1bea7f38345da92d3a10d91476\
             a26aed6b8441f0f72fbbad5d5e0f8ae5cabc9f4f08e6be7902b5c53632db5264\
             afee7422c87b3237a32d5213ad0eb807b61977d9d90666cbb0c70500526b0eb7\
             62c99351796db41166b0aa2f221b5607e0d629fac4e938488245c11557381a4f\
             8addcc49913b11d42481cf8668e37bacbad4a20509e4fe4ccbcee7aea2909a2a\
             be59052f7f28b9340cd92f69729d615b8d3b530941c0b30506498cd4e561a9c8\
             2d915266bb7115967bc76c5593c06d094bdf4294b868afc5fa52742d3bdbd593\
             2df599f0e1187c49f0dba8679c771a514cc9da75e03506957800bf470d4a07c4\
             bb8918d6085499bb8ceeaba23c0b465863327e9ab8b6b8cf8b3ca530ca7b02cf\
             adf85437b750f305e8fbc8855c95bee8595a7e9e1f0993a03adbadc68665a189\
             36cc99b6530b4518c0754990d7bfdfdac76f88cfcbcb7b3d9a71ee10cbd3a1bd\
             bc2e50b642c1fef56511962f845bbec6eab727b1d4add335db8d80c4c07e8356\
             ad05adad68b012489fa5bb5d9019a667778ddf7f5edd80f1d3c4abd64397a89e\
             554c8007809336ddc2b2e7d5219c39fdf39aad33b9350f6b18fe3b98c690b906\
             8f36d4b7669530fd216373842fbf70fe9bbe80854b31eed4bd515d6caeb065d6\
             c609846c9bfae1b3fce3db70b5bfb448ec69512e7f25019c789301b77a75f2a0\
             f81c65ec29f41bf96d597a00c310e8ba4b48ac82b5a735c1e83f22394eb2fc9b\
             35d42a35533c938f26290a5860175637982f1733c99be39c44ac4a0918740630\
             6bde2fd3d28e4e7bda73719912c338804dea03987757dac4d73def665e11da12\
             6f9414f71624a3b753797eb0472bd334094515c4f9fe57fdd8d185f22b4bf82e\
             4b5f6b800870cce19a0c8174dc11ee9f1cb9ffe0ac6f6fff1ebf7c915c7ae201\
             72bb70390e3759912e0e0a4e83a0a2d2318f4386314a89f6438ccb331f89377f\
             f7947fe4b24f788aef85c1656ca87ee41c959f1b09bde09f20c2a51ac481646b\
             28e9b0fc2ff49cfe8cf28577bf5bf6f261f54f97fcd2875da4210c6dfe685450\
             280b68e378d9a486243cc682ed4ec747c37de1fde848e4a8f70498d22e40c462\
             c469c884cd67330e77b694e759232313f31a1624e0e1960f23ddae47b68ff553\
             d0de0910c8abe2e8e5fb063aa744ff77465fc731c7af79a84dcaa9b3f741a46d\
             d3c932877d49242c6d883e14392b8c4530986605812b636a73590ef437f27e40\
             d1af37ed1cbd68fb4e9ca5b0b41e5daee0142c1bf59c9d71f6c19b25e6148dfb\
             b9fb142107aabe3701e36611a7e0b13ea32d3c5f8a51f63c5f34415baa15f6ca\
             77300eb323241ffe73c5acd97fcb682c21dc8911392979e9cb81be5218acf452\
             b5b93f6681d323b7989fdd10efe6fe9e2ac88d0d76a4cf3ee45e3b5c43010001\
             4142c1fc7e8a658eff437594a25cf34d269556d8511918f27fdc7e9d6dd73f0e\
             4790b91f225e9d131e6abb3dbfb66549a9aa57948fbd2f183fcd951b1d2305bf\
             fd6c0a602000000000000000016f5cdf9fb6c1b5e98a36befdc2c55bd4fd8793\
             d554b2506f51c909362495e1216ee83cd270ddb0a00785600ba23bd3363f0798\
             e3a7a117990415adec88e61be65170bd587ab4d2ee38edb22a91e5c29afa397d\
             d5a73465c51c6263f5fbde47fa801ce84464acc32589acaafadfe44d6558774b\
             7085612a88f3424b6dca3c6f07217d1cbd5c41bda46a6a492a0119c1de4d25b5\
             8c94250bee3fba6b8223777535673a2f4da6af27598030f88144f408120f07ca\
             9c98d5d9edcdf6cdc9073f118fce55e6c9d0be80b5e87992ddaa9c22053b3a00\
             d42bdedc9768de25c0b37a5c4fb4e86710b33cebed5588d88adde607f6bca14f\
             0279ce35126d403ffa50f288c87f528c19749ed43bd846c513fcd92c173fe76d\
             8f2e69770439d3d075cb19b1094a42ee07ae1de197e8c136e2bc688a75a74db2\
             4adb0fbb73872dc80074f61c9cce9bd33861bdd921ee3edacab1d6e7cec325c1\
             72b6b6e82ada11687e4fc931225074dd1f20a0f9342dbce1fc3fdbf5bb6cb74a\
             b6475e574e9f5f247a2f7e4fcfcc354d4da8c8066e574642c7fccbbb9ef0aa59\
             2ecab5366fe87eb8e14cd64aee34578aa48f68f8f4c5372df2c3fc429f5a3e39\
             ef6c034c87f9c52b2ea35e28c7bf3be737c3817efd6569466dc859e8ff8965c5\
             249b6f045934d3d08b0ffd388aec58df8194ac2c4fec2152942d2626595e6566\
             4b1fa33b5dae8ee796a840a56d885cbf7ae6483fad05e507ada3f075ebce0d79\
             1b626c6dfe93f8492c4dd3b34aafc33d7644c5c8e38bfd8c19194f65be88fcb4\
             538778632e489a626896372fdd2498b16e64daa7d3c5cfac688d6f9cdf371726\
             1b0a1f25be1bdd6be6558ddb826fa04b5f668810a291aea51a6f05ff7c34dcf8\
             1c74849a8015bad5e4e416989b10ef01de304775db725fa0b665f4330dc9c540\
             dc29aab144837362a97d6bb0165cb3272338c2d32386cd95ee3e66d876b591a2\
             5a6907237523cf908f736d2fdc8e54ea8d9c7562697161d1f72fc4d7b7750524\
             15cd0e5ae5bdf6edfab5776b6ff75ce5e1f8f2beea6ec74252b63966cca58abd\
             638279dc5c998a1068079f3e5dcc8a69165c304c3d8c362ccfadab05ad12208a\
             5655ab389eb727e8ed5f86b300331a13be26e2fbabf89fbfd2b98481dd5edb52\
             ed456a0e03a84b6f89761f91ff251412f5cfa286e35fb9f48ef0e044c4742b6e\
             860a08767ecb80548c2f3df3b371cdb40e86dbe118f64e84faf45ecb78d73364\
             e9e31e3412ca2a3fad0a35983370ea9e6264a222edd1fd4aca30e3c169d7ca2d\
             07609262e786ecd019c1417a06b7dfa32a54e0897afdc6492f26611555cbff47\
             dba3b76381f239d597a8f687669333e0b47b53d5bcc4fea1919490bad3c6f0b6\
             a58a50aca7ddeb9745ead454e0a38d9486fb52aefe0dbb92bf7fd6c215078aba\
             3482b11274ec8cddff92c359bbc6d20bd823ad0bbf859cfaadf8e775b3d37b30\
             78319f46c6d2a112cf60a673fee467538c70f1687d97fbe9d9f8a0856061592a\
             4e00b6d10e979e674dd2cd0ba8b853f733877cd508062d5f723d58d215ad69c2\
             be6be742496aef54eb87338622eb36a9bbc5a7a602d280a45e095b1e078dab54\
             479e783a513c722066acaae44ccc15f9560da91ed053ec05c36d82f680976687\
             6c45c4fbeb2321d50f48f7995437d0c5fc365974a571fb0352d28cb1cdbd21d6\
             9fab576a2e68d6b881776027bcdb7f01be22b1c847d91f26e680ef6ab2c128a8\
             9b59432383d9bd661b0b01432cf8a25319426d38ac2e2114825f59b4250569c7\
             98b1094920bb31130728313ff56a6eef2e6c4b275215dce3786d0f9024952b5f\
             572566c53597e7ef4ab1f75743e605a564054d667f48906b5481d924769ef657\
             51e349891d725a2c1bf8b102fea4c25c874d2fc2ce1bfec4b39bea76fbf7a288\
             55725d52b595a4fc96892c3f1f961d46310ebd5221df729c02060035c559baf0\
             fd7efa73a2213ca29642857aeb8ebf7efdf9d2f5c84746b6fc35ab355a8dca56\
             e7dde4831e47ca1be6b62af30cfcf807c384e56ab84ff03bbe786251e6c4b932\
             c9217bf671046217bd0511fdc06aa69050c1480281e4843eb73d80095a2fb8e6\
             8a2c0c98c9aea637b99d87ad847a3a76d59ea308c751f9cb4a4fce2989822bd6\
             ba2f901f09df647536dc30730ea3160dd35b8c6dcc9aa815b79ed492a8a299a2\
             98ccdf784b9b0211ca877ec1723817c98529acaa4d3727162b5740b0fc9b498d\
             fb2212a3cbf0c63dc4f7663fafad7905643a792862b651e8497b0f0da632b897\
             ecf9ee63f2b20b54fa5eb2f2e424dcce5a075f50b856af266655be3a815fc83e\
             d8027508b2536976982196b160e2219ffdb5c7a56dd3e6b700860c711f4439db\
             f72973f4f26fe3260ec43a3446fe14444b9787d877e107be610147eec4a35747\
             45e95a1f424aff062f84c559d13b1e6b59e8dc2221515c229f07db8eb39c515a\
             321d8bd07b1bd6c9a79dac6d951c04415553c7a2ce1eb77495c7f89c4d5b4cff\
             d289435b69bc53585095083cc5a1b191781342266e204e1566aca8175e2ae84a\
             8bd711d188b666dfb65a6442776d3e23c1b5192af09ec712537f2157d0ccbc1b\
             b3b3a1969d9705671f16bdc266e615ad2e50a8cbd666f3ee7465cc430c6cd69d\
             30c91e717b12f7094b6f0ef89134d6c1620d28d8f238c181146448b348e4ca2e\
             93c737210350f18fb878fb91b70ecc5689e5b6101ecfc545f6a1c903115b0c64\
             19c91a50fb2dbe2edd362f2815f0c75070974507c34130ac9b29747ff7efbe6e\
             37ee4c62be3ecfedfa817fdf3309163aaff677775b77f0d288c9858cfe59cb0f\
             a18afa591e7d574eaef43c82e79d71542c4177de4e5bd724b18cfd33c6853066\
             5728a9d5ef192772094acbf3d885d5146c1634e74754e3fbcb94fa349eac8280\
             cfd7d1f46a0813b57a83bd078b1f7cb5a60a59b59380fe04e1c600c33b33d1ad\
             d69a9ff1be546f0ec5c0083979fce940b23711f382ac0d011c1103f02cb6082c\
             18e39cf7a9c3bf4c081f905ae7b87951a7880b57e934465ccd634e5a17fd8d88\
             66abfdfebd33b2c3d2c5be58144900c04e9c18de0c80270660e62a3c18527755\
             5f89da4c41bd33cec1359f4ed21abdb586e1d97f720a92d16014d7f1822f1836\
             f74c97cb7f7b38e073477c6ab064fde835916c1e624de81f2ad90f6260073c5e\
             1848582860f033630bde225821b39c2572b30c36adf8fdb8317c33df05f64134\
             47f4985d12e9012629df09dc8f43373a6d0db4b0048453a6f1ec662472c77a30\
             d5cf4ac7084f736d0d598c251f2aefc986052fbf12a657885d7140ad36b07c63\
             ab86388a2be12d943747f3f29ef9f2e11e1444cc873df0ed7826eef675389a0d\
             5a0388a8504fe89c4791ea4a572bfd406d5f01418b4f888c9a7a566e32811936\
             bf6950bbf786b86c41c28f2045d31953fcd15f179e7bc00c72870890537921f7\
             deff82270b0e44b88720aa738f60a85567deb7c90b0c2444467621e53e1c0794\
             36d31d3d0b34dd237fc281eb9d87175237a9a433142db4bb7f8c4cb6a34e2dc7\
             3f074045d216695ce88ef68e18564c935c9cbd902e939655c258de2ab78def87\
             46bffd972083afce3b6881b7147262e1a44e0224689fafa1a3cb823c8da6eb7d\
             f091bec0638bf728b7b10aa95f2bce512ec8d3252938d2eb77b44ace7a2f9765\
             88032cac5af670f9e5ca25cb0721bc1baec26f9c3a9f41b02fb62997d6cb0a01\
             314845e9d0e78139ea49f2ead8736e0000"
        );

        assert_eq!(
            tx.wtxid().to_string(),
            "7ac6c1400003162ab667406221656f06dad902c70f96ee703f3f5f9f09df4bb9"
        );
        assert_eq!(
            tx.txid().to_string(),
            "d606b563122409191e3b114a41d5611332dc58237ad5d2dccded302664fd56c4"
        );
        assert_eq!(tx.get_size(), serialize(&tx).len());
        assert_eq!(tx.get_weight(), 7296);
        assert_eq!(tx.input.len(), 1);
        assert_eq!(tx.input[0].is_coinbase(), false);
        assert_eq!(tx.is_coinbase(), false);

        assert_eq!(tx.output.len(), 3);
        assert_eq!(tx.output[0].is_fee(), false);
        assert_eq!(tx.output[1].is_fee(), false);
        assert_eq!(tx.output[2].is_fee(), true);

        assert_eq!(tx.output[0].minimum_value(), 1);
        assert_eq!(tx.output[1].minimum_value(), 1);
        assert_eq!(tx.output[2].minimum_value(), 36480);

        assert_eq!(tx.output[0].is_null_data(), false);
        assert_eq!(tx.output[1].is_null_data(), false);
        assert_eq!(tx.output[2].is_null_data(), false);

        let fee_asset = "b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 36480);
        assert_eq!(tx.all_fees()[&fee_asset], 36480);

        // Coinbase tx
        let tx: Transaction = hex_deserialize!(
            "0200000001010000000000000000000000000000000000000000000000000000\
             000000000000ffffffff03520101ffffffff0201230f4f5d4b7c6fa845806ee4\
             f67713459e1b69e8e60fcee2e4940c7a0d5de1b201000000000000000000016a\
             01230f4f5d4b7c6fa845806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1\
             b201000000000000000000266a24aa21a9ed94f15ed3a62165e4a0b99699cc28\
             b48e19cb5bc1b1f47155db62d63f1e047d450000000000000120000000000000\
             00000000000000000000000000000000000000000000000000000000000000"
        );

        assert_eq!(
            tx.wtxid().to_string(),
            "69e214ecad13b954208084572a6dedc264a016b953d71901f5aa1706d5f4916a"
        );
        assert_eq!(
            tx.txid().to_string(),
            "cc1f895908af2509e55719e662acf4a50ca4dcf0454edd718459241745e2b0aa"
        );
        assert_eq!(tx.input.len(), 1);
        assert_eq!(tx.get_size(), serialize(&tx).len());
        assert_eq!(tx.get_weight(), 769);
        assert_eq!(tx.input[0].is_coinbase(), true);
        assert_eq!(!tx.input[0].is_pegin(), true);
        assert_eq!(tx.input[0].pegin_data(), None);
        assert_eq!(tx.is_coinbase(), true);

        assert_eq!(tx.output.len(), 2);
        assert_eq!(tx.output[0].is_null_data(), true);
        assert_eq!(tx.output[1].is_null_data(), true);
        assert_eq!(tx.output[0].is_pegout(), false);
        assert_eq!(tx.output[1].is_pegout(), false);
        assert_eq!(tx.output[0].pegout_data(), None);
        assert_eq!(tx.output[1].pegout_data(), None);
        let fee_asset = "b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 0);
        assert!(tx.all_fees().is_empty());

        // Transaction with commitmentnonce for in explicit output
        let tx_hex = "0000000000016329025e4a59fe9feeec5d374cea378bf7e60ca859e097759160\
             991a4adf7b720100000000fdffffff0301230f4f5d4b7c6fa845806ee4f67713\
             459e1b69e8e60fcee2e4940c7a0d5de1b2010000000005f5e1000017a9141e4a\
             294de1be82aa3377669f24f5e370f8f3f5c18701230f4f5d4b7c6fa845806ee4\
             f67713459e1b69e8e60fcee2e4940c7a0d5de1b201000775f0482544e002afe1\
             96a0209b9b4e284f05cb02fe05dc170acde48f341b94b59234b767bc923417a9\
             14ecb0fc5a9c86781876b3af7fa5bd566158ee143c8701230f4f5d4b7c6fa845\
             806ee4f67713459e1b69e8e60fcee2e4940c7a0d5de1b2010000000000000aee\
             000000000000";
        let tx: Transaction = hex_deserialize!(tx_hex);

        let tx_hex_serialized = serialize_hex(&tx);
        assert_eq!(tx_hex, tx_hex_serialized);
    }

    #[test]
    fn pegin() {
        // Pegin tx from Liquid integration tests
        let tx: Transaction = hex_deserialize!(
            "0200000001013fe9fcf1d5eae66a152efa45ad32baa5eed3cf11ab5e04edde65\
             0313b58ed8c90000004000ffffffff0201f80bb0038f482243202f0b2dcf88d9\
             b4e7f930a48a3fcdc003af76b1f9d60e63010000000005f5c88c001976a914d7\
             cc0ea6d5e53af78c7802101519cc100692668e88ac01f80bb0038f482243202f\
             0b2dcf88d9b4e7f930a48a3fcdc003af76b1f9d60e6301000000000000187400\
             0000000000000002473044022048cf10f12a31cb0ec36ba3a6f79fad7e0dea3f\
             1aa790a5aed02f8e8455c8cb1502201a2624089ce70c893dfd07a156ba91223e\
             dd5680cbd93d3336285ceefcb3dc1401210205914becd15ac5d2f72ad0aa42e8\
             4349c825a544d8c16e78ecc21534ef561fd4060800e1f5050000000020f80bb0\
             038f482243202f0b2dcf88d9b4e7f930a48a3fcdc003af76b1f9d60e63200622\
             6e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f1600\
             141ab7f5995cf0dfcb90cbb02b63397e5326eae6febe020000000113244fa59f\
             cb407124038ff9121ed546f6dc217571cb366a50d3193f2c80298c0000000049\
             483045022100d1e212715d2dcbc1c66d76f43d9f326f54ff339b565c68f046ed\
             74040730433b02201d9ccbad57566100a06b4be47a4c777cbd7c99e0a08e17f7\
             bf10458117426cd801feffffff0200e1f5050000000017a914774b87be1ef871\
             d82a01edbb89a70bf4bb59310387a88c8b44000000001976a914b14b73956239\
             21dbbce438f4fc1fc8f1a495affa88acf4010000b700000020a060086af92ac3\
             4dbbc8bd89bbbe03ef7e0016930f7fdc806ff15d163b5fda5e32105949c74822\
             2d3e1c5b6e0a4d47f8de45b25d63f145c4056682a7b15cc3da56a2815bffff7f\
             20000000000300000003946c969d81a3b0ca473ab54c11fa665234d6ce1ad09e\
             87a1dbc56eb6de4002b83fe9fcf1d5eae66a152efa45ad32baa5eed3cf11ab5e\
             04edde650313b58ed8c9fccdc0d07eaf48f928fecfc07707b95769704d25f855\
             529711ed6450cc9b3c95010b00000000"
        );

        assert_eq!(
            tx.txid().to_string(),
            "d1402017060761d77ee516f388134660d31ce9a72e546676303ac2fc3400656f"
        );
        assert_eq!(tx.input.len(), 1);
        assert_eq!(tx.input[0].is_coinbase(), false);
        assert_eq!(tx.input[0].is_pegin(), true);
        assert_eq!(tx.input[0].witness.pegin_witness.len(), 6);
        assert_eq!(
            tx.input[0].pegin_data(),
            Some(super::PeginData {
                outpoint: bitcoin::OutPoint {
                    txid: bitcoin::Txid::from_hex(
                        "c9d88eb5130365deed045eab11cfd3eea5ba32ad45fa2e156ae6ead5f1fce93f",
                    )
                    .unwrap(),
                    vout: 0,
                },
                value: 100000000,
                asset: tx.output[0].as_explicit().unwrap().asset.0,
                genesis_hash: bitcoin::BlockHash::from_hex(
                    "0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"
                )
                .unwrap(),
                claim_script: &[
                    0x00, 0x14, 0x1a, 0xb7, 0xf5, 0x99, 0x5c, 0xf0, 0xdf, 0xcb, 0x90, 0xcb, 0xb0,
                    0x2b, 0x63, 0x39, 0x7e, 0x53, 0x26, 0xea, 0xe6, 0xfe,
                ],
                tx: &[
                    0x02, 0x00, 0x00, 0x00, 0x01, 0x13, 0x24, 0x4f, 0xa5, 0x9f, 0xcb, 0x40, 0x71,
                    0x24, 0x03, 0x8f, 0xf9, 0x12, 0x1e, 0xd5, 0x46, 0xf6, 0xdc, 0x21, 0x75, 0x71,
                    0xcb, 0x36, 0x6a, 0x50, 0xd3, 0x19, 0x3f, 0x2c, 0x80, 0x29, 0x8c, 0x00, 0x00,
                    0x00, 0x00, 0x49, 0x48, 0x30, 0x45, 0x02, 0x21, 0x00, 0xd1, 0xe2, 0x12, 0x71,
                    0x5d, 0x2d, 0xcb, 0xc1, 0xc6, 0x6d, 0x76, 0xf4, 0x3d, 0x9f, 0x32, 0x6f, 0x54,
                    0xff, 0x33, 0x9b, 0x56, 0x5c, 0x68, 0xf0, 0x46, 0xed, 0x74, 0x04, 0x07, 0x30,
                    0x43, 0x3b, 0x02, 0x20, 0x1d, 0x9c, 0xcb, 0xad, 0x57, 0x56, 0x61, 0x00, 0xa0,
                    0x6b, 0x4b, 0xe4, 0x7a, 0x4c, 0x77, 0x7c, 0xbd, 0x7c, 0x99, 0xe0, 0xa0, 0x8e,
                    0x17, 0xf7, 0xbf, 0x10, 0x45, 0x81, 0x17, 0x42, 0x6c, 0xd8, 0x01, 0xfe, 0xff,
                    0xff, 0xff, 0x02, 0x00, 0xe1, 0xf5, 0x05, 0x00, 0x00, 0x00, 0x00, 0x17, 0xa9,
                    0x14, 0x77, 0x4b, 0x87, 0xbe, 0x1e, 0xf8, 0x71, 0xd8, 0x2a, 0x01, 0xed, 0xbb,
                    0x89, 0xa7, 0x0b, 0xf4, 0xbb, 0x59, 0x31, 0x03, 0x87, 0xa8, 0x8c, 0x8b, 0x44,
                    0x00, 0x00, 0x00, 0x00, 0x19, 0x76, 0xa9, 0x14, 0xb1, 0x4b, 0x73, 0x95, 0x62,
                    0x39, 0x21, 0xdb, 0xbc, 0xe4, 0x38, 0xf4, 0xfc, 0x1f, 0xc8, 0xf1, 0xa4, 0x95,
                    0xaf, 0xfa, 0x88, 0xac, 0xf4, 0x01, 0x00, 0x00,
                ],
                merkle_proof: &[
                    0x00, 0x00, 0x00, 0x20, 0xa0, 0x60, 0x08, 0x6a, 0xf9, 0x2a, 0xc3, 0x4d, 0xbb,
                    0xc8, 0xbd, 0x89, 0xbb, 0xbe, 0x03, 0xef, 0x7e, 0x00, 0x16, 0x93, 0x0f, 0x7f,
                    0xdc, 0x80, 0x6f, 0xf1, 0x5d, 0x16, 0x3b, 0x5f, 0xda, 0x5e, 0x32, 0x10, 0x59,
                    0x49, 0xc7, 0x48, 0x22, 0x2d, 0x3e, 0x1c, 0x5b, 0x6e, 0x0a, 0x4d, 0x47, 0xf8,
                    0xde, 0x45, 0xb2, 0x5d, 0x63, 0xf1, 0x45, 0xc4, 0x05, 0x66, 0x82, 0xa7, 0xb1,
                    0x5c, 0xc3, 0xda, 0x56, 0xa2, 0x81, 0x5b, 0xff, 0xff, 0x7f, 0x20, 0x00, 0x00,
                    0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x03, 0x94, 0x6c, 0x96, 0x9d, 0x81, 0xa3,
                    0xb0, 0xca, 0x47, 0x3a, 0xb5, 0x4c, 0x11, 0xfa, 0x66, 0x52, 0x34, 0xd6, 0xce,
                    0x1a, 0xd0, 0x9e, 0x87, 0xa1, 0xdb, 0xc5, 0x6e, 0xb6, 0xde, 0x40, 0x02, 0xb8,
                    0x3f, 0xe9, 0xfc, 0xf1, 0xd5, 0xea, 0xe6, 0x6a, 0x15, 0x2e, 0xfa, 0x45, 0xad,
                    0x32, 0xba, 0xa5, 0xee, 0xd3, 0xcf, 0x11, 0xab, 0x5e, 0x04, 0xed, 0xde, 0x65,
                    0x03, 0x13, 0xb5, 0x8e, 0xd8, 0xc9, 0xfc, 0xcd, 0xc0, 0xd0, 0x7e, 0xaf, 0x48,
                    0xf9, 0x28, 0xfe, 0xcf, 0xc0, 0x77, 0x07, 0xb9, 0x57, 0x69, 0x70, 0x4d, 0x25,
                    0xf8, 0x55, 0x52, 0x97, 0x11, 0xed, 0x64, 0x50, 0xcc, 0x9b, 0x3c, 0x95, 0x01,
                    0x0b,
                ],
                referenced_block: bitcoin::BlockHash::from_hex(
                    "297852caf43464d8f13a3847bd602184c21474cd06760dbf9fc5e87bade234f1"
                )
                .unwrap(),
            })
        );

        assert_eq!(tx.output.len(), 2);
        assert!(!tx.output[0].is_null_data());
        assert!(!tx.output[1].is_null_data());
        assert_eq!(tx.output[0].is_pegout(), false);
        assert_eq!(tx.output[1].is_pegout(), false);
        assert_eq!(tx.output[0].pegout_data(), None);
        assert_eq!(tx.output[1].pegout_data(), None);
        let fee_asset = "630ed6f9b176af03c0cd3f8aa430f9e7b4d988cf2d0b2f204322488f03b00bf8"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 6260);
        assert_eq!(tx.all_fees()[&fee_asset], 6260);
    }

    #[test]
    fn pegout() {
        let tx: Transaction = hex_deserialize!(
            "020000000001f6d59ba2e098a2a2eaecf06b02aa0773773449caf62bd4e9f17c\
             db9b0d679954000000006b483045022100c74ee0dd8f3f6c909635f7a2bb8dd2\
             052e3547f94a520cdba2aa12668059dae302204306e11033f18f65560a52a860\
             b098e7df0fa7d35350d16f1c5a86e2da2ae37e012102b672f428ad984563c0de\
             c80b3912fcad871338545df1538fe26c390826fbb4b2000000000101f80bb003\
             8f482243202f0b2dcf88d9b4e7f930a48a3fcdc003af76b1f9d60e6301000000\
             0005f5c92c00a06a2006226e46111a0b59caaf126043eb5bbf28c34f3a5e332a\
             1fc7b2b73cf188910f1976a914bedb324be05d1a1254afeb3e7ef40fea0368bc\
             1e88ac2102e25e582ac1adc69f168aa7dbf0a97341421e10b22c659927de24fd\
             ac6e9f1fae4101a48fe52775701556a4a2dbf3d95c0c13845bbf87271e745b1c\
             454f8ebcb5cd4792a4139f419f192ca6e389531d46fa5857f2c109dfe4003ad8\
             b2ce504b488bed00000000"
        );

        assert_eq!(
            tx.txid().to_string(),
            "aeb921c251c466d36f58677e0ade3b7229c525bc2859f683f33c4428d1b5d83f"
        );
        assert_eq!(tx.input.len(), 1);
        assert_eq!(tx.output.len(), 1);
        assert_eq!(tx.output[0].is_null_data(), true);
        assert_eq!(tx.output[0].is_pegout(), true);
        let fee_asset = "b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 0);
        assert!(tx.all_fees().is_empty());
        assert_eq!(
            tx.output[0].pegout_data(),
            Some(super::PegoutData {
                asset: tx.output[0].as_explicit().unwrap().asset,
                value: 99993900,
                genesis_hash: bitcoin::BlockHash::from_hex(
                    "0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"
                )
                .unwrap(),
                script_pubkey: hex_deserialize!(
                    "1976a914bedb324be05d1a1254afeb3e7ef40fea0368bc1e88ac"
                ),
                extra_data: vec![
                    &[
                        0x02, 0xe2, 0x5e, 0x58, 0x2a, 0xc1, 0xad, 0xc6, 0x9f, 0x16, 0x8a, 0xa7,
                        0xdb, 0xf0, 0xa9, 0x73, 0x41, 0x42, 0x1e, 0x10, 0xb2, 0x2c, 0x65, 0x99,
                        0x27, 0xde, 0x24, 0xfd, 0xac, 0x6e, 0x9f, 0x1f, 0xae,
                    ],
                    &[
                        0x01, 0xa4, 0x8f, 0xe5, 0x27, 0x75, 0x70, 0x15, 0x56, 0xa4, 0xa2, 0xdb,
                        0xf3, 0xd9, 0x5c, 0x0c, 0x13, 0x84, 0x5b, 0xbf, 0x87, 0x27, 0x1e, 0x74,
                        0x5b, 0x1c, 0x45, 0x4f, 0x8e, 0xbc, 0xb5, 0xcd, 0x47, 0x92, 0xa4, 0x13,
                        0x9f, 0x41, 0x9f, 0x19, 0x2c, 0xa6, 0xe3, 0x89, 0x53, 0x1d, 0x46, 0xfa,
                        0x58, 0x57, 0xf2, 0xc1, 0x09, 0xdf, 0xe4, 0x00, 0x3a, 0xd8, 0xb2, 0xce,
                        0x50, 0x4b, 0x48, 0x8b, 0xed,
                    ]
                ],
            })
        );

        let expected_asset_id =
            AssetId::from_hex("630ed6f9b176af03c0cd3f8aa430f9e7b4d988cf2d0b2f204322488f03b00bf8")
                .unwrap();

        let got_asset = tx.output[0].as_explicit().unwrap().asset.0;

        assert_eq!(got_asset, expected_asset_id);
    }

    #[test]
    fn issuance() {
        let tx: Transaction = hex_deserialize!(
            "\
            02000000010173828cbc65fd68ab78dc86992b76ae50ae2bf8ceedbe8de048317\
            2f0886219f7000000806b483045022100a21a578a7f2f98ca65115488facb62d7\
            c196d2df14213aed986cfdbdfd05647402204197c1fd1d9e94a14535e0918cd3c\
            a5932f6c086ac49136f255fd72ba7651d4801210211dd65ff387faf9bd658527c\
            b79d2b91cc7b691b0b5273b1a50d43104ea50f0dfeffffff00000000000000000\
            00000000000000000000000000000000000000000000000000000000000000000\
            00000000000000000000000000000000000000000000000981654eb5ccd9927b8\
            bea94997dce4ae85b3d95a20700384f0b8c1fe99518063800030a1f491e09f485\
            e018ec05dfa75239207546d19339b23e074dad183d788f81e7a708ce96a4dbcf0\
            9acde1fee82af501c9846ee59c51e77813feb3dff8d199195ee6303ed14decec9\
            a849df2449da03ab2d9ee717e03878226220612d790e7dec08f1e81976a914d7f\
            8ae92f7a073586c318b10db200db2ce831a1e88ac0a6c90cc7e0028e021801e68\
            d3a6db206598985e4cb954d09bcdbb64312a4024d308c2740f3fe59958d51bcf8\
            ccc863a2212c07313effa4a887814fb217b511ea27802759443a36a675dc6671e\
            d02fefecc127a8dafb9894d2ff44a74c5e8aae3dc2e91976a914904d0f751d7aa\
            301c724899be86224034758cc7988ac01230f4f5d4b7c6fa845806ee4f6771345\
            9e1b69e8e60fcee2e4940c7a0d5de1b201000000000000dc50000097010000fd4\
            50c40264c7003daed6754f258faa19bf81c8d94532cd8ec023420ed4e7e102259\
            93508c96f319d07b8cd89b4d1818c446e3599347482a767c7dd3b2fb5030b7eaf\
            62bc439875f020a6b400a29deedc363f9daed32a081a5ef6295b7c4e2a9db31a6\
            ed1a6d290d5a354f71aae49db8a34fbff22ca1e897a73984805705a0787c23d5d\
            c8973aeaf4f431febe5e1feec2c4eb31a1ad74ff01a0536e2fffe081b554f8b44\
            88e152fa98b2cb06a2ed6e793352e76b81896db6911416b458d42f2e6cdc6a67d\
            7e522cd51af9a1004ad7329ed86811adafde53caa97d4100ef5e2dcd63e956999\
            2716691eab34e7adc87bcb94c9fd983d265079bb0f9179cd089de335cf6da676e\
            822f81e46cfcb2271390efa383944b99682927fec879380c23f6484939d7320ea\
            d9690d90855ea2f27c8dbac965e64ab5e004c96a4a09e590cb012a2297231fc52\
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            ddd39d78d59fa8b44247153d486e8b8ddf2a3e730603c14690cb871afd3e3d13e\
            d4b36ce7a4b88b14f2be96caae4296f810ef269d8c02ed691cb5895a06716e160\
            1a9bf87ebcf8b5bda02343f2eac3dfa5fc6fc4c8c855fbf70af37da99231f160b\
            b99717a32f4cd17a213aac1cfc39fa80badc7a9125477374c441468c594c1e751\
            104e01f65a47e6039d804fa8550a8800a52f3b087e714acff868b62ceb123319a\
            fb65020309116dcea3742157dce1d0b85b8f7c0a3ca0c54147c9a17bd15c06630\
            f55666012d7b29ab5147c3b2c7aefb821562516ad902785983e1330c489929ccc\
            f806810327538ff30fb3a690f9751200e67be85d6220e8b01dae3efc86b7b4340\
            68873583c4c0ca1744575be08dcef90211bd26b812858d077ca4dda520080b8cd\
            001d9ef9d8d5085e33911de7e3c4bb2580ee9ac5c3833a0c3ea0a1ec473f417fa\
            4b85f6e66d0ff4182c528b711b505f320a5d42cbc39b08808137cbb9290b7549a\
            e61465c9dac0d0be6d6eefffffacc8e4d527d346209bd14911453e397d9a5e414\
            d32ce5be5895ca737712281d39f94a7e67c2243f95b07ea257d3df7fffa71e0bc\
            169ea6b8e1981c2ac6b3ea14458dfc9166ce57db3fa1a99c6fd1c9973965637a9\
            e7a31e4c6c27486e3667bd69049ff3040aff40c560f3c15e3df870dfb0596e262\
            3495e08dccc003113983bf8f2dca02ea7af5b2de2f093aac789a5582026eda1d4\
            038d32947016b21bea05d1276100c7a3262654bc48b6187ee4d2bae5bb5383d67\
            1c59f41981c3d966cd9eb12ac107f3f14e8920f0f25113d92203cae3734e9f704\
            22e5e833b9011073bc691f79419b720470b9b895353a005c4356cb8c950fe5a83\
            e2efb461eb7d5887977638b40937b73f5e67861aaf0741506c24cf33c8ce68a63\
            350c90e69e022e09efe5d6cfe15e4bbe0674c1f4608e0396c281b3453efbba5c4\
            0d03962abd55dc9e63532255754a263db4e7e1d4984496c7c0048d54442698585\
            a276ddb1bbafa17390f143717fba16b5705b71127c6d615f9a4302c0b67ae633d\
            21c38a31c7e68a702a55163ed926093c0857e1902e336dffafc108711b1ac0cc4\
            50a774006680c2569a42e5d20f8172bde00bfdea57097c7a377442d47354bf44e\
            eec6320013ef954ca79bfd714f61aca47826990c91d607257d4f69986a0a6750b\
            00c0dad72e665584059f589c428e09c4f71cc8148ae8c739f89ea848aeda489c8\
            00316154cc338a0c6ec82a317cc09c880d6dbe093f579aa56826249359edd6555\
            4ece318eee4211cf6ab34e2f4fd690352863abfab7d4db199bed131ba14206b57\
            7b890178fbe7126ab9bf0af0fd959526c1ccb4808b37a9db4c2312c3b2f7292f3\
            5c4d7ad150e997cb93b39176af7da6a4540e37efb0a4540f536ee3bb96b68ac57\
            f43755b02f0e1e5ed4bcb5063c97efead2457405b0b578663a12b8a5623168638\
            a8a76c1eae249f6716aea4b1259e2e4023ba8d23eb4ece7961400bf962dcbcb03\
            858a92b56731f482d83baa715de969f82ae22bc7647fa17cae7ca9113977b3f1a\
            f766eedb5e96e481ba319eb12044af64b971aeb054bde5e0440e6c9c5f5eb1aa5\
            bdfe702fef1f983aaab12cb666a2ba87f9d7d7a00f1bed5f455d3748600ec7f28\
            a781868e1896617cf0bbdb81a33dadca46df29554db003ded2c228c660e97d265\
            46e58dba32fb48e1a8091c1442e6291c915a412074af0b5bb28e9a00eda57bfa6\
            c1974f7f41a8680a31ebfa34ae7f98bf39d657fd80776f03b5bf1ecff9edaeb66\
            e938987056d2a47c246d47d91b74616345c827792311be6524e285b1db60a7fc2\
            7bf3d5c5c31d34f072595b61f1c35fb26312ce337598376b81b93c3a1d6095922\
            4bb32807f9c37c3227c23c0120e07e15f46d87ea017175f2f7105e08325054eb1\
            3efe3330fbef7eec8d0c9a598ce327046372e37a6871abd2bb164441dad8e9d31\
            fc3009a3cbc87b0a43abb1ddbfbe311028e747bc8caa9ea8d45d37a6c2a0a9ba9\
            5190e0399b9449d06fa78c455c1c5ee47c0b7f3e01d1d4d1370a7377757e3e02d\
            d6e495996fbcefab719939490279f0847102c0a697b65bd420512fb9af201a796\
            a0164b798dac45c8752078dc20b7123e033d01eb6f089d78627ac54271f1f7de9\
            8564d2860da314ce69b882e7f03db8f1b3f630c808c2fa047eb3a1b39c48154bd\
            54e6be5259364ad7cb82178fccd42fd8819370d1c93d29eaad58d0398de41e55d\
            3394fc444a9f8b6a923e70caea1a77fbe4e1560a7bf5d4b953ba6175faa13eee9\
            a92a9e6d7148c1198ffadaf72db1e64a066bc0d82e77a067b66eea0f4f4f9f75f\
            cd27fe5038942054b85325f2f6e003aa6b1c27580d95d030b63f706dfdd2b8e89\
            c5ce80f2c54cfebe8433469fd90ce9bff1462571af7c2eef3a266f5c8f875e3bc\
            197c09d5476de7214a004673857d6080d57e31b19954a3ca8f45601bfe30c54dd\
            51cc22a5b17517868c95b868e96a9c14520dfbeb926030a9b213e9087973328b7\
            2d16035cb22e9835d74a9e8107f883d45f303b6e8d50721888c325b857f041c7f\
            2fe9260b64d04440bcbc2757504c1539c31632e65bb06f386aad9c65cd33c893c\
            95d9470b9d7474d5582a29a0146d35ce27b534f29eb161d73e3baa18638d7077b\
            e55251b3c321f0987ce59c53ac25eff5fb16df2009bd33a01cca1f16af5b78eb6\
            3ae751c89f42b7b411b3d4787b7c7090f8f069f90b1b492926f4813e2a9e1c073\
            9c073bea3ec2983ef713a880e33f5fa0b2f203f03fc6d9670bd44f6a27168fcdb\
            9c538b2d8800b2f5d8f50b1b282d139a24f49d17942d1305042e2fc26116d6808\
            16721cb2a6ecf0c7e68f85464766e832a0ac65601da66f00ca270b8db5d7f1d78\
            9b518a5d2d27027be5d685b6df86c8e2ac7ec2f1b191c75bdfc0dc2b4b22c14bc\
            3d828809adead46542c90cc3a0febd4391fd12cba8625de98d0b709b5d56efbd5\
            80a0442687d0e677b8515fe7a47e2c002d1ee16c157c0d3f09b9ed14b948413d1\
            b88056874395c24c9694781c108ce8aa6b0ac7889c977f030270985fa68be1d27\
            74f4c7b9c06f1aab326301a56d424f5300c2c60c8220150f85192cde412823660\
            66e87fe26d6ee5b7d284537d62dc698b5913f57c72b95c6ec43291274acb2c8f3\
            109b82fad4b8a135b12163102f317b409a04f57e93ebe311d89a31cb17d338171\
            45548c92a6339c988d1eee7d9d57475709c29f829ebb8ad5fe6113498b9ce6eb3\
            91aa806d45fdcfac594b93b12c1e1635a6469248af357891c6bb24fee7cb38b65\
            35af8462f90405e0f21ce4db4b20cb8c033c039c4e3561c3de87cc1687e0a6944\
            ce9475179956392cbf2aa5c0ca9d487fbbb77d9a0856e1cc5b131b37f2e337a97\
            e18b761c1fa5cb1a40845b5e2a12a7240ba050762e79aa754992218b092dfb22d\
            a3fdaf9573589e767f12fdbe567593c581e9482209ee8c25258ee540b55e90c89\
            8e7c834676db7b9b8e11b74049a4447d4267adddcaa85926a9ff56c128b29b895\
            6423fc994355e90fb48caa17d4156b80bfe668cda0a0ec108a487f4a7193e25cb\
            78fea170dc6956487744de0c263bd0c1847c5df09fad541b2be2d557896b566ae\
            50186f922528705e5d8e7785f8ef9568f5edbb36e2d46ffc89b1b83439ff07ba4\
            5c3d8f741d0000\
        "
        );

        assert_eq!(
            tx.txid().to_string(),
            "eda1d7c0f47fe209c3b5e98ec4bf48fc03f78ce8dcb9742683751fac42f7e4ed"
        );
        assert_eq!(tx.input.len(), 1);
        assert_eq!(tx.output.len(), 3);
        assert_eq!(tx.input[0].has_issuance, true);
        let fee_asset = "b2e15d0d7a0c94e4e2ce0fe6e8691b9e451377f6e46e8045a86f7c4b5d4f0f23"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 56400);
        assert_eq!(tx.all_fees()[&fee_asset], 56400);
        assert_eq!(
            tx.input[0].asset_issuance,
            AssetIssuance::Confidential(ConfidentialAssetIssuance {
                asset_blinding_nonce: [0; 32],
                asset_entropy: [0; 32],
                amount: ValueCommitment::from_commitment(
                    9,
                    &[
                        0x81, 0x65, 0x4e, 0xb5, 0xcc, 0xd9, 0x92, 0x7b, 0x8b, 0xea, 0x94, 0x99,
                        0x7d, 0xce, 0x4a, 0xe8, 0x5b, 0x3d, 0x95, 0xa2, 0x07, 0x00, 0x38, 0x4f,
                        0x0b, 0x8c, 0x1f, 0xe9, 0x95, 0x18, 0x06, 0x38
                    ],
                )
                .unwrap(),
                inflation_keys: None,
            })
        );
    }

    #[test]
    fn txout_null_data() {
        // Output with high opcodes should not be considered nulldata
        let output: TxOut = hex_deserialize!(
            "\
            01319c0000000000d3d3d3d3d3d3d3d3d3d3d3d3fdfdfd01010101010101010101\
            010101010101010101\
            00\
            fdfd006a209f6a6a6a6a6a6a806a6afdfdfdfd17fdfdf\
            dfdfdfdfdfdfdfdddfdfdfdfdfdfdfdfdfddedededededededededededededede\
            dedededededededededededededededededededededededededededededededed\
            edededededededededededededededededededededededededededededededede\
            dededededea7dedededededededededededededededededfdedededededededed\
            edededededededede9edededede00000000000001000000000000050000ff0000\
            000000000000000000ff000000000000000000000000200000000000011c00000\
            000d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3d3f3d3d3d3d3d3d3d3d3d3d3d3d3\
            d3d3d3d3d3d3\
        "
        );

        assert!(!output.is_null_data());
        assert!(!output.is_pegout());

        // Output with pushes that are e.g. OP_1 are nulldata but not pegouts
        let output: TxOut = hex_deserialize!(
            "\
            012d3634393536d9a2d0aaba3823f442fb24363831fdfd01010101010101010101\
            010101010101010101\
            00\
            fb6a2000002323232323232323232323232323232323232323232323232123232301015123232323232323232323232323232323232323232323232323233323232323332323232323232323232323232323232323232323232323232324232323232323232323232323232323232323232323232323232323232323232323232323232323232323232321230d000000232323232323232323a2232323232323222303233323232323332323232323232323232323232323242321232323232323232324232323232323232323232323232323232323232323232323232323232323232323232323232323232323232321230d0000002323232323d3"
        );

        assert!(output.is_null_data());
        assert!(!output.is_pegout());

        // Output with just one push and nothing else should be nulldata but not pegout
        let output: TxOut = hex_deserialize!(
            "\
            012d3634393536d9a2d0aaba3823f442fb24363831fdfd01010101010101010101\
            010101010101010101\
            00\
            226a200000000000000000000000000000000000000000000000000000000000000000\
        "
        );

        assert!(output.is_null_data());
        assert!(!output.is_pegout());
    }

    #[test]
    fn pegout_tx_vector_1() {
        let tx: Transaction = hex_deserialize!(
            "\
            0200000000021c39a226160dd8962eb273772950f0b603c319a8e4aa9912c9e8e\
            36b5bdf71a2000000006a473044022071212fcde89d1055d5b74f17a162b3dbe5\
            348ac8527a131dab5dcf8a97d67d2f02202edf12f3c69fed1fa0c23da608e6ade\
            d86dd5c7b09da42f61b453c3a838e8cab012103557f25ff40f976670ddf59c719\
            38bade91684b76ad69dfed27049de2afec59e5feffffff853db31f986dd89c81f\
            e87a84f385d7099c5ea841d762b26b03166e5e798dfbe000000006a4730440220\
            42c70729fb50930179a9d76f5febbda5b0ee50e62febf92de4dd10b9393554d80\
            2203140b107519243e4110c065017c8ae1ac04843f94b3f20a1e5faf7343dd761\
            59012102797ffcf7ccc8e2012a90e71962901a1ad740f2a28f2f563c76f9eb42a\
            8100f5efeffffff03016d521c38ec1ea15734ae22b7c46064412829c0d0579f0a\
            713d1c04ede979026f0100000000000f7869001976a914216d878ebff0c623909\
            889265d8dc1ab26e2ff4388ac016d521c38ec1ea15734ae22b7c46064412829c0\
            d0579f0a713d1c04ede979026f0100000000000186a000fd02026a206fe28c0ab\
            6f1b372c1a6a246ae63f74f931e8365e15a089c68d61900000000001976a914df\
            662e2dd70fd82acba2d252cc897cb6e618093288ac21025f756509f5dbac47d54\
            c9ef5ccf49895a4dbac4759005a74375f66c480e6c0864da1010ce552be292c37\
            e7242d7e58e678a19349021d22f2712ea68de397b66167d141b09f98e3294e05b\
            51c1469bab3ddb7096f5aa2817e218d137879fb54dbe1659353e6e64add9cb2d6\
            f9e8647bd1ca94d9a6a80d193d76f115596f7bcc8a07eaf85c738f31f4fb192b7\
            85aa2934bcb5e4f6a7b444da2bc64da3527a33cc7f0792630f57b92ba07dd0e47\
            2d5e2e08b2bca8f1c06e18a07f226dac8acbcc1dfafe8be893d9c5092808b1dec\
            fbb955c5f82968bed609b0b2e2c55abe4b0c12bc0c7ea3976e0af2c6aadab3c90\
            ed862a9846fc1a1c20ef220a050538d3c9ff12669653f9b055606dd45fe66f18a\
            a819c8cda5c1b224dc19c0fbf028133d1256588834ea14cb44a84da3af8344365\
            7f9ff3eaa14216dc4ed06a92c0ce19be4fe066c9d830ee3acdd3062b9336ace12\
            cc5935953284946bf6bc5c89f9a13d37dddd63e85173174a164f4b68cbc94d347\
            b3d4a7e4ec79044b049375cc7b43b7657123b80f5834afca696b6bc7bf47fa677\
            42e1caa609424cba3ec9d9d156b5909debd0475d91d31134acce50420c2ea694e\
            2c2ea477a0bd14e670bccb42a0fb7009b41ee86a016d521c38ec1ea15734ae22b\
            7c46064412829c0d0579f0a713d1c04ede979026f0100000000000006fc000054\
            840300\
        "
        );

        assert_eq!(tx.input.len(), 2);
        assert_eq!(tx.output.len(), 3);
        assert!(!tx.output[0].is_null_data());
        assert!(!tx.output[0].is_pegout());
        assert!(!tx.output[0].is_fee());

        assert!(tx.output[1].is_null_data());
        assert!(tx.output[1].is_pegout());
        assert!(tx.output[1].pegout_data().is_some());
        assert!(!tx.output[1].is_fee());

        assert!(!tx.output[2].is_null_data());
        assert!(!tx.output[2].is_pegout());
        assert!(tx.output[2].is_fee());

        assert_eq!(
            tx.output[0].as_explicit().unwrap().asset,
            tx.output[1].as_explicit().unwrap().asset
        );
        assert_eq!(
            tx.output[2].as_explicit().unwrap().asset,
            tx.output[1].as_explicit().unwrap().asset
        );
        let fee_asset = "6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 1788);
        assert_eq!(tx.all_fees()[&fee_asset], 1788);
    }

    #[test]
    fn pegout_with_numeric_pak() {
        let tx: Transaction = hex_deserialize!(
            "\
            0200000000021c39a226160dd8962eb273772950f0b603c319a8e4aa9912c9e8\
            e36b5bdf71a2000000006a473044022071212fcde89d1055d5b74f17a162b3db\
            e5348ac8527a131dab5dcf8a97d67d2f02202edf12f3c69fed1fa0c23da608e6\
            aded86dd5c7b09da42f61b453c3a838e8cab012103557f25ff40f976670ddf59\
            c71938bade91684b76ad69dfed27049de2afec59e5feffffff853db31f986dd8\
            9c81fe87a84f385d7099c5ea841d762b26b03166e5e798dfbe000000006a4730\
            44022042c70729fb50930179a9d76f5febbda5b0ee50e62febf92de4dd10b939\
            3554d802203140b107519243e4110c065017c8ae1ac04843f94b3f20a1e5faf7\
            343dd76159012102797ffcf7ccc8e2012a90e71962901a1ad740f2a28f2f563c\
            76f9eb42a8100f5efeffffff03016d521c38ec1ea15734ae22b7c46064412829\
            c0d0579f0a713d1c04ede979026f0100000000000f7869001976a914216d878e\
            bff0c623909889265d8dc1ab26e2ff4388ac016d521c38ec1ea15734ae22b7c4\
            6064412829c0d0579f0a713d1c04ede979026f0100000000000186a0005f6a20\
            6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000\
            1976a914df662e2dd70fd82acba2d252cc897cb6e618093288ac21025f756509\
            f5dbac47d54c9ef5ccf49895a4dbac4759005a74375f66c480e6c08651016d52\
            1c38ec1ea15734ae22b7c46064412829c0d0579f0a713d1c04ede979026f0100\
            000000000006fc000054840300\
        "
        );

        assert_eq!(tx.input.len(), 2);
        assert_eq!(tx.output.len(), 3);
        assert!(!tx.output[0].is_null_data());
        assert!(!tx.output[0].is_pegout());
        assert!(!tx.output[0].is_fee());

        assert!(tx.output[1].is_null_data());
        assert!(!tx.output[1].is_pegout());
        assert!(!tx.output[1].is_fee());

        assert!(!tx.output[2].is_null_data());
        assert!(!tx.output[2].is_pegout());
        assert!(tx.output[2].is_fee());

        assert_eq!(
            tx.output[0].as_explicit().unwrap().asset,
            tx.output[1].as_explicit().unwrap().asset
        );
        assert_eq!(
            tx.output[2].as_explicit().unwrap().asset,
            tx.output[1].as_explicit().unwrap().asset
        );
        let fee_asset = "6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 1788);
        assert_eq!(tx.all_fees()[&fee_asset], 1788);
    }

    #[test]
    fn pegout_with_null_scriptpubkey() {
        let tx: Transaction = hex_deserialize!(
            "\
            0200000000021c39a226160dd8962eb273772950f0b603c319a8e4aa9912c9e8\
            e36b5bdf71a2000000006a473044022071212fcde89d1055d5b74f17a162b3db\
            e5348ac8527a131dab5dcf8a97d67d2f02202edf12f3c69fed1fa0c23da608e6\
            aded86dd5c7b09da42f61b453c3a838e8cab012103557f25ff40f976670ddf59\
            c71938bade91684b76ad69dfed27049de2afec59e5feffffff853db31f986dd8\
            9c81fe87a84f385d7099c5ea841d762b26b03166e5e798dfbe000000006a4730\
            44022042c70729fb50930179a9d76f5febbda5b0ee50e62febf92de4dd10b939\
            3554d802203140b107519243e4110c065017c8ae1ac04843f94b3f20a1e5faf7\
            343dd76159012102797ffcf7ccc8e2012a90e71962901a1ad740f2a28f2f563c\
            76f9eb42a8100f5efeffffff03016d521c38ec1ea15734ae22b7c46064412829\
            c0d0579f0a713d1c04ede979026f0100000000000f7869001976a914216d878e\
            bff0c623909889265d8dc1ab26e2ff4388ac016d521c38ec1ea15734ae22b7c4\
            6064412829c0d0579f0a713d1c04ede979026f0100000000000186a000466a20\
            6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000\
            0021025f756509f5dbac47d54c9ef5ccf49895a4dbac4759005a74375f66c480\
            e6c08600016d521c38ec1ea15734ae22b7c46064412829c0d0579f0a713d1c04\
            ede979026f0100000000000006fc000054840300\
        "
        );

        assert_eq!(tx.input.len(), 2);
        assert_eq!(tx.output.len(), 3);
        assert!(!tx.output[0].is_null_data());
        assert!(!tx.output[0].is_pegout());
        assert!(!tx.output[0].is_fee());

        assert!(tx.output[1].is_null_data());
        assert!(!tx.output[1].is_pegout());
        assert!(!tx.output[1].is_fee());

        assert!(!tx.output[2].is_null_data());
        assert!(!tx.output[2].is_pegout());
        assert!(tx.output[2].is_fee());

        assert_eq!(
            tx.output[0].as_explicit().unwrap().asset,
            tx.output[1].as_explicit().unwrap().asset
        );
        assert_eq!(
            tx.output[2].as_explicit().unwrap().asset,
            tx.output[1].as_explicit().unwrap().asset
        );
        let fee_asset = "6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d"
            .parse()
            .unwrap();
        assert_eq!(tx.fee_in(fee_asset), 1788);
        assert_eq!(tx.all_fees()[&fee_asset], 1788);
    }
}