Evidence row 1790977

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts/:artifact_id/download"
    ]
  ],
  "name": "Artefaktum",
  "owner_address": "0xeccc9f03eb79c6a5b0fbd919f95656557e6a6173",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0xeccc9f03eb79c6a5b0fbd919f95656557e6a6173",
        "scheme": "exact"
      }
    ],
    "description": "Get a short-lived presigned URL to download an artifact's bytes (the latest version, or version_id). Returns {url, method, expires_at, version_id}. Costs $0.005 in USDC. No signup: a wallet's first payment creates its account and a default project; the same wallet later reaches the same files.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "artifact_id": "01a1942e-a000-74e0-9a52-2eae26c666cd"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "expires_at": "2026-10-31T09:45:00Z",
              "method": "GET",
              "url": "https://storage.artefaktum.dev/presigned-get-url",
              "version_id": "019a3a12-5b7e-7a90-b1c2-3d4e5f6a7b8c"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/v1/artifacts/:artifact_id/download",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "additionalProperties": false,
                  "properties": {
                    "artifact_id": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "artifact_id"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {
                    "run_id": {
                      "type": "string"
                    },
                    "version_id": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "pathParams"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793456363/bazaar-icons/804f62358cb25a27.png",
    "lastUpdated": "2026-10-31T22:57:40.587Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:57:40.294Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts/:artifact_id/download",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Get a short-lived presigned URL to download an artifact's bytes (the latest version, or version_id). Returns {url, method, expires_at, version_id}. Costs $0.005 in USDC. No signup: a wallet's first payment creates its account and a default project; the same wallet later reaches the same files."
}

What the leaf hashes

{"body":"0d0ed42b9a4dca336933c23808a8cb4b583716cbd701a0249ac348c55ec7f0bc","id":1790977,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939318854,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts/:artifact_id/download","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x372d495e56f5e951fc3fc630fefdb9f2de537a6bf53633f9991c312364da8997
2. 0xf09dc2ff2a3c332c0bdc62267e42dd5b13fca4f6c118dc51cd1c4cb2921fbbe3
3. 0xe5e785699b97eef0731d0f082620ba6bca404796a2d09fa1b3ca6256b9737e21
4. 0x353095e5f02991cca0a3529ed99464868692c699aeabea9ffafc35c45941320e
5. 0xb0bc8a26675dfca9f1dee91ecb3b321b9d0617b73e8082a76502d096f9bc88b8
6. 0xd19eb799af54fa2a55df558ce8a4c2f4b09d8a4afd3a503b7026bcbbea1023e9
7. 0x0161f80ae736b2984120006ff20d9ab63d3ee6abfb64ceb398e5f63c6cf2edb9
8. 0x6943648cd37086ac6ad52b476fad63615eebfd843e1da35d5cd03474f4785cb2
9. 0xc6779a30202aa3330fa5038d021823d7811a343e4bc38d81188c54a0d012e227
10. 0x0ae6e4982c303baa4eec6998c1e086929065c2ba6741e362ba92bc64dd0d6624
11. 0x78be4ca333c48c8b6091180a6970c2dbc0d854845f242ce303f9e6aa114e25c9
12. 0x430f2c8ba8ad43480fc5cafec26ef91c193fc91fac5d078625365e3b2ce1ff21
13. 0xdba48e0b270dc35a114639ac6d3ae9323f73a176da0f2cc0715e5a5b8f1d8059
14. 0x770f20a6b76206ceacb50b86f521e555bd27a1f27e7156c64591601c5b119595
15. 0x80b1e578d986f759ca01ea02c7a922e757a26a65318f9844ac72c5c1d4fe339e
16. 0xa856ad79e6f29a2b5516257f0d4817172cca11251fe2e7e8f3911b105fe2b622
17. 0x02b3554752e71a19b12d7a76dbff436e85387226ceec89fdebdcdaf0122c2932
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90