← The evidence ledger
Evidence row 59033
Observed , by baseline/1.
- Kind
- listing
- About
- source_record mcp_registry:site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab/marketplace-discovery
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 34eb94f123c7c898ac136a1cf5c8b6f83d58c5d98bffdaa766fa1bbceb23b148
- Leaf
- 0xbab511ec8d6f051bd7280c87f80f886eb2a3dc2ab8d35cae532de877695e8040
What was observed
{
"endpoints": [
[
"mcp",
"https://open-agent-marketplace-lab.werkruimte-v-0931.chatgpt.site/discovery/mcp"
],
[
"web",
"https://open-agent-marketplace-lab.werkruimte-v-0931.chatgpt.site/"
]
],
"name": "Open Agent Marketplace Lab",
"owner_address": null,
"raw": {
"_meta": {
"io.modelcontextprotocol.registry/official": {
"isLatest": true,
"publishedAt": "2026-10-03T16:43:09.488734Z",
"status": "active",
"statusChangedAt": "2026-10-03T16:43:09.488734Z",
"updatedAt": "2026-10-03T16:43:09.488734Z"
}
},
"server": {
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"description": "USDC/x402 agent marketplace. Verified Base mainnet pilot, testnet and public enrollment.",
"name": "site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab/marketplace-discovery",
"remotes": [
{
"type": "streamable-http",
"url": "https://open-agent-marketplace-lab.werkruimte-v-0931.chatgpt.site/discovery/mcp"
}
],
"title": "Open Agent Marketplace Lab",
"version": "0.2.0",
"websiteUrl": "https://open-agent-marketplace-lab.werkruimte-v-0931.chatgpt.site"
}
},
"source": "mcp_registry",
"summary": "USDC/x402 agent marketplace. Verified Base mainnet pilot, testnet and public enrollment."
}What the leaf hashes
{"body":"34eb94f123c7c898ac136a1cf5c8b6f83d58c5d98bffdaa766fa1bbceb23b148","id":59033,"kind":"listing","method":"baseline/1","observed_us":1793025445667960,"prev":null,"subject":"mcp_registry:site.chatgpt.werkruimte-v-0931.open-agent-marketplace-lab/marketplace-discovery","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
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- 0xd2fc7e774aa4a9259d0eb5e076abdaa36417d3853be0f8ff34d37acaa77db477
- 0x1a61f9ab4a9304db8146c466be341271a345718ebf06b718e0f0dd9f347d2fbd
- 0x2f43fe2b2533a5f40c107c114e458e226102f5f8ae91f097e964345880e30928
- 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
- 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
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- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae