Feat: Realities Ledger Rework

This PR adds the following features:

- solidification
- multithreading
- pluggable VMs

packages/utxo/input.go

@@ -0,0 +1,4 @@
+package utxo
+
+type Input interface {
+}

packages/utxo/output.go

@@ -0,0 +1,5 @@
+package utxo
+
+type Output interface {
+	ID() OutputID
+}

packages/utxo/outputid.go

@@ -0,0 +1,3 @@
+package utxo
+
+type OutputID [32]byte

packages/utxo/transaction.go

@@ -0,0 +1,9 @@
+package utxo
+
+type Transaction interface {
+	ID() TransactionID
+
+	Inputs() []Input
+
+	Bytes() []byte
+}

packages/utxo/transactionid.go

@@ -0,0 +1,18 @@
+package utxo
+
+import (
+	"github.com/mr-tron/base58"
+)
+
+// TransactionID is the type that represents the identifier of a Transaction.
+type TransactionID [32]byte
+
+// Bytes returns a marshaled version of the TransactionID.
+func (t TransactionID) Bytes() (serializedTransaction []byte) {
+	return t[:]
+}
+
+// String creates a human-readable version of the TransactionID.
+func (t TransactionID) String() (humanReadableTransactionID string) {
+	return "TransactionID(" + base58.Encode(t[:]) + ")"
+}

packages/utxo/vm.go

@@ -0,0 +1 @@
+package utxo