Attest by DataHubz (verify only) — Claude Code MCP server
Check Attest signatures, records and SHA-256 fingerprints without signing in. Use it to verify an agreement or receipt without sending the file to the server.
claude mcp add --transport http attest-verify https://attest.datahubz.com/mcp/verifyWhat Attest by DataHubz (verify only) does
The server accepts a signature-stamp code, an agreement, receipt or Share proof ID, or a SHA-256 fingerprint. It reports whether the signature checks out and whether the record is anchored on the Horizen blockchain. Anyone can run a check without an account.
This is the verification-only connector: it exposes verify_record. It cannot read or sign documents, and the file stays on your device while its fingerprint is checked. Add the HTTP server to Claude Code with the command below. Agreement management and signer reminders require a different Attest connector.
What it helps with
- check a signature using its stamp code
- compare a file fingerprint with an Attest record
- verify an agreement, receipt or Share proof ID
- check whether a record is anchored on Horizen
Example prompts for the agent
- Check the signature linked to stamp code
ATT-1234-5678and report the result. - Compare this file's SHA-256 fingerprint with its Attest record.
- Verify receipt ID
...and tell me whether it is anchored on Horizen.
How to install Attest by DataHubz (verify only)
Platform CLI: remote server
claude mcp add --transport http attest-verify https://attest.datahubz.com/mcp/verifyPlatform CLI: remote server
codex mcp add attest-by-datahubz-verify-only --url https://attest.datahubz.com/mcp/verifyConfig file
{
"mcpServers": {
"attest-by-datahubz-verify-only": {
"url": "https://attest.datahubz.com/mcp/verify"
}
}
}Config file
{
"servers": {
"attest-by-datahubz-verify-only": {
"type": "http",
"url": "https://attest.datahubz.com/mcp/verify"
}
}
}Platform CLI: remote server
gemini mcp add -t http attest-by-datahubz-verify-only https://attest.datahubz.com/mcp/verifyStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about Attest by DataHubz (verify only)
How do I install Attest by DataHubz (verify only) in Claude Code?
Run claude mcp add --transport http attest-verify https://attest.datahubz.com/mcp/verify. This connects the verification-only server without requiring sign-in.
What does Attest by DataHubz (verify only) do?
It checks Attest records using an ID, stamp code or SHA-256 fingerprint. The result covers signature validity and the record's Horizen anchor.
Do I need to upload a file to verify it?
No. The server checks the file's SHA-256 fingerprint; the file itself stays on your device.
