# TrustNotch – Tamper-evident audit logs for AI agents, verifiable offline

> Source: <https://trustnotch.com/>
> Published: 2026-09-08 06:21:59+00:00

# 
Tamper-evident audit logs

for AI agents.

 Cryptographically signed, Bitcoin-anchored, and verifiable offline — even if TrustNotch is gone.

## Three steps from action to proof

1.   ### Signed receipt on submissionAn agent submits an action over HTTP. TrustNotch returns an Ed25519-signed receipt immediately — a cryptographic commitment to the exact content logged.
2.   ### Merkle-batched & Bitcoin-anchoredEntries are batched into an RFC 6962 Merkle tree. Each batch root is anchored to Bitcoin via OpenTimestamps, giving every entry a tamper-evident timestamp rooted in the world's most audited ledger.
3.   ### Verify offline, independentlyAnyone can verify any entry with the open-source [`trustnotch` verifier](/how-verification-works/) —
              no trust in TrustNotch required.
              The receipt, Merkle inclusion, and Bitcoin anchor are all checked
              locally. A proof keeps verifying even if TrustNotch disappears.

## Get started

[Quickstart Get a key, record an entry, fetch its proof, and verify it yourself.](/docs/)

[MCP Server Connect Claude Desktop and other MCP clients to TrustNotch.](/trustnotch-mcp/)

[PyPI: trustnotch-mcp The MCP server package. Install with](https://pypi.org/project/trustnotch-mcp/)

`pip` or run with `uvx`. [PyPI: trustnotch The standalone offline verifier.](https://pypi.org/project/trustnotch/)

`pip install trustnotch`.