> NOTICE — Pre-launch build. Every record here is a dated observation of a real MCP endpoint operated by a third party, rendered from the published archive. Coverage is partial — the figures cover the snapshots in the export this build was made from, not the whole chain and not the whole ecosystem. Claims and badges are not open.

# returncheck.m-angelmartinez-fer.workers.dev/mcp

Last observed: 2026-08-30T09:19:24.429Z
Recorded as: OK
Transport: streamable-http
Observations held: 7
Published: yes

## Observations

| Observed | Snapshot | Recorded as | Detail | Latency ms | Tools | Tool schema fingerprint |
|---|---|---|---|---|---|---|
| 2026-08-24T09:12:23.018Z | REL-SNAP-020 | OK | - | 49 | 1 | 584df150591e15f181258890dd56b01f4cdcad80dc1ff144fcb62a009645740c |
| 2026-08-25T09:14:23.452Z | REL-SNAP-021 | OK | - | 45 | 1 | 584df150591e15f181258890dd56b01f4cdcad80dc1ff144fcb62a009645740c |
| 2026-08-26T09:10:38.536Z | REL-SNAP-022 | OK | - | 46 | 1 | 584df150591e15f181258890dd56b01f4cdcad80dc1ff144fcb62a009645740c |
| 2026-08-27T09:24:25.578Z | REL-SNAP-023 | OK | - | 44 | 1 | 584df150591e15f181258890dd56b01f4cdcad80dc1ff144fcb62a009645740c |
| 2026-08-28T09:21:15.004Z | REL-SNAP-024 | OK | - | 77 | 1 | 584df150591e15f181258890dd56b01f4cdcad80dc1ff144fcb62a009645740c |
| 2026-08-29T09:17:09.158Z | REL-SNAP-025 | OK | - | 63 | 1 | a1cb61bb2aecb2475c2745018d240697f301b5fdb748280085201616e2eab7d3 |
| 2026-08-30T09:19:24.429Z | REL-SNAP-026 | OK | - | 45 | 1 | a1cb61bb2aecb2475c2745018d240697f301b5fdb748280085201616e2eab7d3 |

## Identity

Record key: returncheck.m-angelmartinez-fer.workers.dev/mcp (the normalised endpoint observed)
Registry names (not anchored — no inclusion proof reaches this field): io.github.mangelmartinezfer-hue/returncheck (what the registry said when we swept it, as observed by us — not evidence that the registry was correct, that the name belongs to whoever registered it, or that it still resolves)
Name reported by the server: ReturnCheck (self-reported, unverified, never used as identity)

Each observation carries a merkle leaf in the snapshot it belongs to. The chain
establishes that a root existed by a given time; it does not establish that any
measurement is true.