Module hash 

Content-addressed event hashing for the Merkle-DAG.

This module provides hash verification and parent chain validation on top of the core hash computation in crate::event::writer::compute_event_hash.

Merkle-DAG Properties

• Each event’s hash covers its content AND its parent hashes.
• Modifying any event invalidates the hashes of all its descendants.
• Parent hashes are sorted lexicographically before hashing.
• Hash format is text-prefixed (blake3:<payload>) with canonical base64url writes and legacy hex accepted for validation.

Enums

HashError

Errors from DAG hash verification.

HashErrorCode

Machine-readable codes for HashError.

Functions

verify_chain

Verify the Merkle-DAG integrity of a collection of events.

verify_event_hash

Verify that an event’s stored hash matches the hash of its content.