Official MCP RegistryListed
Akashi Notari
Proof of existence for files: anchor a SHA-256 hash on Base, look up proofs. Paid with x402.
First seen 6 Oct 2026. Evidence as of 6 Oct 2026.
2
Tools
From an anonymous probe
1
Source listings
Each with its own history
1
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| anchor_hash | Paid with x402 (USDC on Base). Writes the SHA-256 hash of a file on-chain; the block time becomes the proof of existence. Compute the hash locally and never send the file. The hash, the filename and the payer address become public and permanent. Without a payment in _meta["x402/payment"] the result is the payment requirement. | Changes data |
| find_proof | Free. Look up whether a file hash is anchored on Base and when, or read the proof written by a transaction. Pass `hash` or `tx`. Call it before anchor_hash to avoid paying for a hash that is already anchored. | Read-only |
Change history
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | io.github.self-reality/akashi-notari | 6 Oct 2026 | 6 Oct 2026 | 1 |