Evidence row 1790981

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts/:artifact_id"
    ]
  ],
  "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 one artifact: title, description, tags, metadata, status, expiry and latest version. 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": {
              "created_at": "2026-10-31T09:30:00Z",
              "created_by": "wallet:0x857b06519e91e3a54538791bdbb0e22373e36b66",
              "description": "Quarterly revenue by region",
              "expires_at": "2026-11-30T09:30:00Z",
              "external_key": "reports/2026-q3",
              "id": "019a3a12-5b7d-7f21-8e3a-6c4b2d9f0a18",
              "latest_version": {
                "content_type": "application/pdf",
                "created_at": "2026-10-31T09:30:00Z",
                "etag": "9b2cf535f27731c974343645a3985328",
                "id": "019a3a12-5b7e-7a90-b1c2-3d4e5f6a7b8c",
                "original_filename": "q3-report.pdf",
                "sha256": "4f8b42c22dd3729b519ba6f68d2da7cc5b2d606d05daed5ad5128cc03e6c6358",
                "size_bytes": 482133,
                "status": "ready",
                "version_number": 1
              },
              "metadata": {
                "source": "agent"
              },
              "project_id": "019a3a10-0c3e-7c4e-9a51-2f6d8e1b4c70",
              "semantic_ready": true,
              "stale_upstream": false,
              "status": "ready",
              "superseded": false,
              "superseded_by": null,
              "tags": [
                "finance",
                "q3"
              ],
              "title": "Q3 revenue report",
              "updated_at": "2026-10-31T09:30:00Z"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/v1/artifacts/:artifact_id",
        "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"
                },
                "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": "2026-10-31T22:57:33.924Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:57:53.386Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts/:artifact_id",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Get one artifact: title, description, tags, metadata, status, expiry and latest version. 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":"c819596d58554572383036296d05422abb66b853258e4990277e61628dd19826","id":1790981,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939349724,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts/:artifact_id","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. 0xd344a6df327138fec3c7a0150d6337fe358485dafe9fb608188857009f94f417
2. 0xeff307d5c73c1f519f9e3f57028be3c65d6d1d839e8f52a7e1e19c5b65c04857
3. 0x9af193f0fa0634f6eb061f30ec9b774b00654afe30841d34e173998ff97067f1
4. 0xdd6bb5bb3ac8662f1fc210e50ad5b81ca835f16a6d455a309dbfc71942c8715a
5. 0xfbc1c49729aebc97f0814f4ea626a3da0fb8ce3d7565743d62262af47ee9ad00
6. 0x84c0e217fa3dc2125eb495be6c424d883f8405be98627669e44d0b089b0921be
7. 0xedeed01140e0c7c8f85e6a439be72746bbcc9a459338e91647e4a32b7c0d6cc6
8. 0x13ab0d0ed0b369d24023b1f37c9cfb7f09b724f6867fb2953a4a8b52718c6342
9. 0xc2a1c39d0d799669911b9b20732787d6e31a1da6333b8a5fd39eb90a5d9ecd51
10. 0x46cb12737e461700277bd1d82d2f695a9211412c33b50bca6051f3b1609de298
11. 0xbcefb9cbe6895a99eee9698e696978fcfe883aad498aa5a6e30edf6c55385bcf
12. 0xe6703a6bad3b63bbf676a161df4fe9a1ce4bd9fb605915a55da4e8dc27021ec7
13. 0x3050daa45d874dca785f324e89aca8fa3ef2f8a889ac7ef7a4ed23bd6db53a62
14. 0x57b5e8b79f831258fde2efa4c7b70cd486ce34b32e7d612a6965c086ed7a75e8
15. 0xd3f5c237675f14686b3a3c2715c6735a96952155107d7b2cb9a44c56420170bd
16. 0xfc183bee85dc11a067fb710c6eb88824b94a516ddbdf2717b839e672a2206a7e
17. 0xb5916fb7a3e87dc0702e46eeadcd22652e2e1e755f8d429cc7a14a67a350b51b
18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90