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tithonus

org.tithonus/mcp · v3.5.0

New (7 days)

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Can write (some tools are not declared read-only)
Capabilities declared	tools
Tool definitions	5 tools · with description 100% · input schema is an object 100% · read/destructive hints 100%

Signed time, Bitcoin-anchored notarisation and drand randomness for agents. No account.

streamable-http · https://tithonus.org/mcp

claude mcp add --transport http mcp https://tithonus.org/mcp

{
  "mcpServers": {
    "mcp": {
      "url": "https://tithonus.org/mcp"
    }
  }
}

tithonus_now
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.
tithonus_stamp
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.
tithonus_check
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.
tithonus_lookup
Find the earliest receipt for a sha256 hash, if it was ever stamped. Never creates a stamp.
tithonus_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 aft

Repository · Website · JSON · Text for agents · Registry updated 2026-10-22