Evidence row 525991

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://cc0.company/api/store/agent-services/cc0pedia/invoke"
    ]
  ],
  "name": "cc0.company/api/store/agent-services/cc0pedia/invoke",
  "owner_address": "0xba816f0708a91a2cde866f70e931d93e83dd6ef5",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 30,
        "network": "eip155:8453",
        "payTo": "0xBA816F0708a91A2CDe866F70e931D93e83Dd6eF5",
        "scheme": "exact"
      }
    ],
    "description": "cc0.company — x402 agent-services marketplace on Base (USDC): CC0 image generation, market-data digests, and third-party agent tools. This endpoint: cc0pedia — look up any CC0 creator, collection, or work by name/slug and get provenance, creator, license, on-chain pointers + full CC0 body. Synchronous JSON, $0.01/lookup.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "query": "sartoshi"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "creator": null,
              "entry": {
                "body": "## About\nsartoshi is the pseudonymous artist who created mfers…",
                "canonical_url": "https://cc0.company/cc0pedia/sartoshi",
                "collections": [
                  {
                    "chain": "ethereum",
                    "contract_address": "0x79fcdef22feed20eddacbb2587640e45491b757f",
                    "name": "mfers",
                    "opensea_url": "https://opensea.io/collection/mfers",
                    "year": "2021"
                  }
                ],
                "content_license": "CC0-1.0",
                "excerpt": "Pseudonymous creator of mfers — 10,000 hand-drawn CC0 PFPs minted on Ethereum on 30 Nov 2021, a cornerstone of the CC0 movement.",
                "id": "01KVXK6AQP7YCGRGA3WPQABQT3",
                "kind": "artist",
                "links": {
                  "twitter": "sartoshi_rip"
                },
                "profile_image": "https://cc0.company/…/sartoshi.png",
                "quality": "featured",
                "slug": "sartoshi",
                "tags": [
                  "mfers",
                  "cc0",
                  "pfp",
                  "ethereum"
                ],
                "title": "sartoshi"
              },
              "matched_by": "slug",
              "meta": {
                "canonical_url": "https://cc0.company/cc0pedia/sartoshi",
                "content_license": "CC0-1.0",
                "database": "cc0pedia"
              },
              "price_usdc": "0.01",
              "query": "sartoshi",
              "related_works": [
                {
                  "slug": "mfers",
                  "title": "mfers",
                  "url": "https://cc0.company/cc0pedia/mfers"
                }
              ],
              "service": "cc0pedia",
              "success": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "query": {
                      "description": "Name or slug of the CC0 creator, collection, or work to look up (e.g. 'sartoshi', 'mfers', 'xcopy'). Resolved by exact slug → id → fuzzy title. Browse the catalog at https://cc0.company/cc0pedia.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "query"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T09:44:57.94Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-27T09:44:57.439Z"
    },
    "resource": "https://cc0.company/api/store/agent-services/cc0pedia/invoke",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "cc0.company — x402 agent-services marketplace on Base (USDC): CC0 image generation, market-data digests, and third-party agent tools. This endpoint: cc0pedia — look up any CC0 creator, collection, or work by name/slug and get provenance, creator, license, on-chain pointers + full CC0 body. Synchronous JSON, $0.01/lookup."
}

What the leaf hashes

{"body":"8baa1ba8407577446a72b3ccfe17adc3978ca23a8b4f22466be57e9bacaa1b75","id":525991,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124778941652,"prev":451613,"subject":"x402_bazaar:https://cc0.company/api/store/agent-services/cc0pedia/invoke","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x917d1add85ee8711b1f706ef37637df74c08e0f3c531b00c53c50ee49daa0bce
2. 0x22188b86daafb990b48150da70008207d5db6f499fd623f78af04d1fa6ab804b
3. 0x30fb1dab19353f8b5c467e9757575169d4d8419dea3a766821884cc2aa5f475f
4. 0xc1c3603ca74e9593d11cdd766ac7247ff369218813b153d3e939e54290c1a6b6
5. 0x8ef01b905c9db400d87e7294cd4485fb58f1784a549f3619d4d39dd50d50b00c
6. 0x111ee265c909d35a835d36e1c8e1d15b0a08327d16afae237fb0a66c2259c588
7. 0x77878bb963cc8853ccd9a526e7d6be36434066ca6d8635cc4911e79566dd0c97
8. 0xa3517abe304202c46ec9e2a90b5a7f43cffcee63387e6a6c3f22b997316163f9
9. 0x9f82606a337d6993f0fc17e83f960f050a98f1049ff4eed99e6a6b0d3e327eab
10. 0x2ab0dbd7210c33af6218b1c006be07fbb68f58c4f020af15b26b474a81e50636
11. 0xe4e0761e46bc22777bc9e4a5791f18fb8244210f2d943234802b8ccdc8d058dc
12. 0xfd2b06953e26e4e360d929209ec04f8c67b7bbdc4861dbc60618fbc5f9b393f0
13. 0x5c9cbca5bb1d6be4d84e301b4e4c1a280536eb16ee98ed4add9057142c132dde
14. 0x06e3b43165f5b3c31d850bc32f20b2e25b844564c4e042c141b9748c26a5a600
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4