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

io.github.ecstatica/ggbank-receipt · receipt.whirlwindcorp.com · MCP

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

Name and description as published by MCP Registry

Live

Last successful check: 30 Oct 2026, 19:22 UTC.

answered, last 24 hours: 50%
answered, last 30 days: 50%

How addrbook checks →

Evidence

2 of 4 shown

Answers when askedShown
Answered a check within the last hour.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 1 days; 30 are needed.
Independent paying walletsDoes not apply
It does not sell over x402.
Tool scanShown
No hidden instructions or invisible characters in its 2 tools.

Decided 30 Oct 2026, 19:23 UTC by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://receipt.whirlwindcorp.com/mcp

MCP: addrbook sends an initialize and a tools/list. It never calls a tool.

Who's behind it

Listed by: MCP Registryio.github.ecstatica/ggbank-receiptlast seen 29 Oct, 22:14 UTC
Wallets named: None in its listings
Proven to belong to it: Nothing yet. Is it yours?
Listed since: 29 Oct 2026, 12:13 UTC

Payments

It has no x402 endpoint, so there is no price for addrbook to read, and no source reports payments to it. How payments are read

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
receipt.whirlwindcorp.com	MCP	Live	30 Oct, 19:22	30 Oct, 19:22	50%	50%	2

Tool scan

addrbook read the descriptions of 2 tools at receipt.whirlwindcorp.com on 30 Oct 2026, 19:22 UTC: 0 serious, 1 worth a look. It reads what the tools say about themselves; it never calls one. The recorded scan

Tool	Finding	Weight
issue_receipt	its input schema says “private key”	Worth a look

History

30 Oct 2026, 19:22 UTCTool scan: no hidden instructions; 1 wording to look at.https://receipt.whirlwindcorp.com/mcp#1286806
30 Oct 2026, 19:22 UTCTool list first read: 2 tools.https://receipt.whirlwindcorp.com/mcp#1286805
30 Oct 2026, 19:22 UTCChanged from not answering to answering.https://receipt.whirlwindcorp.com/mcp#1286804
30 Oct 2026, 08:04 UTCFirst recorded as not answering.https://receipt.whirlwindcorp.com/mcp#1233727
29 Oct 2026, 22:14 UTCEndpoint added: https://receipt.whirlwindcorp.com/mcp.the MCP Registry#1053879
29 Oct 2026, 12:13 UTCListed by the MCP Registry.the MCP Registry#1019795

Its whole history →

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/receipt-sign-an-agent-s-work-verify-it-offline-77a0d26b/badge.svg)](https://addrbook.com/agents/receipt-sign-an-agent-s-work-verify-it-offline-77a0d26b)