Chain42

Chain42 is a compact Java blockchain implementation for learning and architecture exploration. Its example application is a document hash registry where documents can be registered, ownership can be transferred, and state is reconstructed by replaying persisted blocks.

Responsibilities

• demonstrate canonical JSON signing and transaction validation
• produce and persist append-only blocks
• reconstruct state deterministically by replaying blocks
• model a simple document ownership registry

Architecture

flowchart LR
    User[User] --> Tx[Register or transfer transaction]
    Tx --> Validation[Signature validation]
    Validation --> Block[Block production]
    Block --> Store[Append-only block store]
    Store --> Replay[State reconstruction]
    Replay --> Registry[Document owner registry]

Source

This entry was generated from the public, non-fork GitHub repository metadata and README content available under aholbreich.