Lite version of the Blockchain. C# Data integrity.
A light-weight framework that reads/writes to a blockchain file.
This lite version of Blockchain reads and writes to a local blockchain. With SharpChain, it's easy to check for inconsistencies and tampering of data
| type | size | description |
|---|---|---|
| uint32 | 4 | Magic |
| uint8 | 1 | Block format |
| int | 4 | Timestamp (in seconds) |
| uint32 | 4 | Data length |
| data | Data.Length? | Arbitrary data |
| byte[] | 64 | Previous hash |
| byte[] | 64 | Block hash |
| uint32 | 4 | Owner length |
| byte[] | Owner.Length? | Owner Text |
| uint8 | 1 | Terminator / End of block |
The sha256 hash is created by concatenating the following:
MasterKey+(Timestamp (in seconds(string)) + Previous Hash(string) + Data.Length(string) + Data(string) + Owner.Length(string) + Owner(string))
Providing a format other than that will create inconsistencies with the data.
SharpChain checks for two types of data inconsistencies.
- Tampering with data
- Altering hashes.
Either will cause all future blocks to be inconsistent.
The initial Block Hash should always equal 64 '0's .
After running your applciation (which will build a database), do some hex-editing then run the application again :).
You can set the Blockchain file path by setting SharpChain.basedir = ("c:\path-to-file\", "/var/usr/blockchains/")
Indexing allows you to more quickly obtain a block in the Blockchain file. The index file is located in the same folder as the Blockchain appended with an ".idx" extension.
You can search a block by it's Hash.
public static BlockchainIndex IndexOf(string Hash)
BlockchainIndex.IndexOf("5e01a7626e4dfb9f47eaf3ffe3c417170afae9c330a2b8f6b9658759a9a63943") would return a SharpChain Block.
It's best practice with this utility to track hashes which you'll need to reference to avoid reading the index as much as possible. Especially for extremely large databases. I plan to implement an splitting feature soon. 👍