stampthisfile for Claude Code

io.github.stampthisfile/mcp

Timestamp files in Bitcoin (OpenTimestamps): send a hash, pay per hash with x402, get a proof.

client:Claude Code transport:streamable-http tools:4

Install stampthisfile in Claude Code

run in your project directory

claude mcp add --transport http mcp https://stampthisfile.com/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs