vex-anchor

Public anchoring layer for VEX audit logs.

Features

• AnchorBackend trait — Pluggable anchoring backends
• FileAnchor — JSON Lines append-only log for development
• GitAnchor — Orphan branch commits for tamper-evident timestamping

Usage

use vex_anchor::{FileAnchor, AnchorBackend, AnchorMetadata};
use vex_core::Hash;

#[tokio::main]
async fn main() {
    let anchor = FileAnchor::new("anchors.jsonl");
    
    let metadata = AnchorMetadata::new("tenant-123", 42);
    let root = Hash::digest(b"merkle root");
    
    let receipt = anchor.anchor(&root, metadata).await.unwrap();
    println!("Anchored: {}", receipt.anchor_id);
}

Supported Backends

• Ethereum (EIP-4844 Calldata)
• Celestia (Blobstream/DA)
• OpenTimestamps (Bitcoin-backed)
• FileAnchor (JSON Lines for local dev)
• GitAnchor (Tamper-evident Git commits)

License

Apache-2.0 License - see LICENSE for details.