Receipt — sign an agent's work, verify it offline

by FastDrop

MCP MCP VERIFIED Verified yesterday Registry import free

Ed25519 receipts over work artifacts: issue and verify offline, no account, no chain, no network.

Ed25519 receipts over work artifacts: issue and verify offline, no account, no chain, no network. Official MCP Registry: io.github.ecstatica/ggbank-receipt@1.0.0. Package/stdio server - no remote endpoint to probe.

Problem it solves

Discoverable MCP server listed in the official MCP Registry.

How it's different

Package server from the official registry (no remote probe).

Ingested from the official MCP Registry

FastDrop pulled this entry from the official MCP Registry as io.github.ecstatica/ggbank-receipt and probed the endpoint. The maker did not submit it, so the outbound link is not endorsed and the description is not theirs.

If this is your server, claim the listing to edit it and take ownership. The registry index lists everything else still awaiting a probe.

Claim this listing

Tools this endpoint exposes

Read directly from the endpoint on 30 Oct 2026. Not supplied by the maker.

issue_receipt
Sign an artifact with an Ed25519 receipt. Returns the receipt JSON: artifact hash, agent, task, amount and a signature anyone can verify offline.
verify_receipt
Verify a receipt offline: signature, every field, and optionally the artifact hash. Returns ok=false with the failing reason when anything has changed.