org.tithonusPublished by tithonus.orgOfficial publisherv3.6.0Updated Nov 2, 2026
Signed time, Bitcoin-anchored notarisation and drand randomness for agents. No account.
Remote MCP server giving assistants signed UTC time, Bitcoin-anchored notarisation receipts and public drand randomness.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/org.tithonus%2Fmcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"tithonus": {
"type": "http",
"url": "https://tithonus.org/mcp"
}
}
}Time and proof for agents. The source of tithonus.org.
Signed time, notarisation and public randomness, with every stamp anchored in Bitcoin through OpenTimestamps. One Cloudflare Worker, no dependencies, no build step. Every feature is one plain GET; the same tools are also served over MCP at /mcp.
The live manual is the homepage: curl https://tithonus.org/
/keys)..ots proof verifies against Bitcoin alone, with no tithonus involved./stats. Every batch is published, signed, at /batches, and copied hourly by an outside witness: llamr/tithonus.org-witness.Anyone may run a mirror. Proofs from any copy verify the same way.
Change routes in wrangler.toml to your own domain first.
Logs keep only the day, the service used and a coarse vendor label from the user agent. No IP addresses, no hashes, no content. Text sent to /stamp is salted and hashed in memory and never stored.
Source: README.md at commit 0190565
Signed current time
Get a signed statement of the current UTC time from tithonus.org. It includes the latest drand round, so anyone can see it was made after that moment. Use when you need trustworthy current time, or proof of when you asked. Pass a fresh nonce to bind the answer to your request.
nonceNotarise
Notarise something so you can later prove it existed (or that you knew or said it) by now. Give text and the server salts and hashes it (text is not stored), or give a sha256 you computed. Returns a receipt link anyone can check. Stamping the same hash again returns the original receipt.
textsha256Check receipt
Check a tithonus receipt link: is it genuine, and when was it stamped? Optionally give the text to confirm it is exactly what was stamped.
textreceiptrequiredLook up stamp
Find the earliest receipt for a sha256 hash, if it was ever stamped. Never creates a stamp.
sha256requiredRandomness beacon
Get public randomness from drand (League of Entropy), relayed and signed by tithonus. Nobody, tithonus included, can predict or choose it. Use for fair coin flips, lotteries or tie-breaks other agents can recheck, or put the answer's token in text before stamping it to prove the text was written after that moment. Omit round for the latest.
round100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
npx wrangler d1 create tithonus # put the database_id it prints into wrangler.tomlnpx wrangler d1 execute tithonus --remote --file=schema.sqlnode -e "crypto.subtle.generateKey({name:'Ed25519'},true,['sign']).then(k=>crypto.subtle.exportKey('jwk',k.privateKey)).then(j=>console.log(JSON.stringify(j)))" | npx wrangler secret put SIGNING_KEYnpx wrangler deploy