Security & Testing

stampthisfile.com

Provides Bitcoin-anchored timestamping and OpenTimestamps proof verification for SHA-256 file hashes.

x402 supported1 endpoint4 known toolsFirst detected October 21, 2026Last detected October 21, 2026

ENDPOINT 1

https://stampthisfile.com/mcp

No auth detected

MCP server metadata

Name: stampthisfile
Version: 0.1.0

Capabilities

tools.listChanged

Server instructions

Timestamp files in Bitcoin with OpenTimestamps. Hash the file yourself (SHA-256) and send only the hash: the file never leaves your device. stamp_hashes costs 0.05 USDC per hash on Base, paid with x402 (no account or API key). It returns a standard .ots proof per hash, pending at first; it completes once Bitcoin confirms it, usually within 1-6 hours (get_stamp, then get_proof for the complete proof). 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. verify_proof checks any .ots proof for free, and any OpenTimestamps tool can verify it without us. Read https://stampthisfile.com/evidence.md before stamping something meant as evidence.

Known tools 4

stamp_hashes

Timestamp 1-100 SHA-256 hashes in Bitcoin.

Inferred read-only

get_stamp

Status of one stamp: pending, complete (with the Bitcoin block height and time, and a statement of what it proves) or failed (not confirmed within 7 days).

Inferred read-only

get_proof

The current .

Inferred read-only

verify_proof

Check an OpenTimestamps proof (from us or anyone) against the SHA-256 of a file.

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.stampthisfile]
url = "https://stampthisfile.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "stampthisfile": {
      "type": "http",
      "url": "https://stampthisfile.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: stampthisfile
Remote MCP URL: https://stampthisfile.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "stampthisfile": {
      "url": "https://stampthisfile.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "stampthisfile": {
      "type": "http",
      "url": "https://stampthisfile.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "stampthisfile",
  "transport": "streamable-http",
  "url": "https://stampthisfile.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Loading Trust v2 evidence…

Checking the associated registrable domain. The BuiltWith key remains server-side.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.