Server data from the Official MCP Registry
Timestamp files in Bitcoin (OpenTimestamps): send a hash, pay per hash with x402, get a proof.
About
Timestamp files in Bitcoin (OpenTimestamps): send a hash, pay per hash with x402, get a proof.
Remote endpoints: streamable-http: https://stampthisfile.com/mcp
Security Report
Valid MCP server (1 strong, 1 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.
4 tools verified · Open access · No issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Found in Source Code
Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"io-github-stampthisfile-mcp": {
"url": "https://stampthisfile.com/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
stampthisfile MCP server
A hosted MCP server that lets AI agents
timestamp files in Bitcoin with stampthisfile:
send the SHA-256 hash of a file (never the file), pay per hash in USDC with
x402, and get a standard OpenTimestamps
.ots proof that anyone can verify without us. No account or API key.
- Endpoint:
https://stampthisfile.com/mcp(Streamable HTTP, stateless) - Auth: none. Stamping is paid per call with x402; everything else is free.
There is nothing to install or run: this repository describes the hosted server. The server itself is not open source.
Connect
Claude Code:
claude mcp add --transport http stampthisfile https://stampthisfile.com/mcp
Cursor, VS Code and other clients (.mcp.json style):
{
"mcpServers": {
"stampthisfile": {
"type": "http",
"url": "https://stampthisfile.com/mcp"
}
}
}
Tools
| Tool | What it does |
|---|---|
stamp_hashes | Timestamp 1-100 SHA-256 hashes in Bitcoin. Paid per hash with x402; returns a pending .ots proof per hash and a signed receipt |
get_stamp | A stamp's status: pending, complete (with the Bitcoin block and time) or failed |
get_proof | The current .ots proof, base64. Fetch it again once complete to get the Bitcoin attestation |
verify_proof | Check any OpenTimestamps proof against a file's SHA-256 |
A proof is pending at first and completes once Bitcoin confirms it, usually within 1-6 hours. A complete proof shows the file existed no later than the time of its Bitcoin block. It is not a signature and does not show who made the file: read stampthisfile.com/evidence.md before stamping something meant as evidence.
Pricing
Stamping costs a fixed price per hash, in USDC on Base, paid with x402 using
the MCP transport: without a payment,
stamp_hashes returns a tool error whose structuredContent is the x402
PaymentRequired. Retry with the signed PaymentPayload in
_meta["x402/payment"], or in the payment argument if your client cannot set
_meta. The settlement comes back in _meta["x402/payment-response"]. Invalid
input is never charged. Reading, downloading and verifying proofs are free.
More
- stampthisfile.com/llms.txt: the API for agents
- stampthisfile.com/openapi.json: REST API
- stampthisfile/skills: the same, as agent skills
(
npx skills add stampthisfile/skills)
License
MIT, for the contents of this repository.
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