Evidence row 1790979

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts"
    ]
  ],
  "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": "List the artifacts (stored files with title, tags, metadata and latest version) in one of the wallet's projects, newest first, filterable by status, content_type, tag, external_key and dates. Returns {items, next_cursor}. 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",
            "queryParams": {
              "project_id": "019a3a10-0c3e-7c4e-9a51-2f6d8e1b4c70",
              "tag": "finance"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "items": [
                {
                  "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"
                }
              ],
              "next_cursor": null
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "content_type": {
                      "type": "string"
                    },
                    "created_after": {
                      "type": "string"
                    },
                    "created_before": {
                      "type": "string"
                    },
                    "cursor": {
                      "type": "string"
                    },
                    "expires_before": {
                      "type": "string"
                    },
                    "external_key": {
                      "type": "string"
                    },
                    "limit": {
                      "type": "string"
                    },
                    "project_id": {
                      "type": "string"
                    },
                    "status": {
                      "type": "string"
                    },
                    "tag": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "project_id"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "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": "2026-10-31T22:57:37.359Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:57:36.984Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "List the artifacts (stored files with title, tags, metadata and latest version) in one of the wallet's projects, newest first, filterable by status, content_type, tag, external_key and dates. Returns {items, next_cursor}. 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":"9bb6110174d05124e2b3f434f968b135256c2f6392cbad3c29d82ef7b84132f1","id":1790979,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939342992,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts","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. 0xc9b4ee6995e2ca87015ee7d0e95ee0a30fbf1c6d5f9e5179394fef4758b2524d
2. 0xaed5a36a05b5a726346af2fbfbbb44cb550b5de54b3356421dfbd6e76b6a7cd9
3. 0x44ee847dc925b519316fd6e02eab1de4994881e2926bbe40a5cc26162d72b839
4. 0x34e2a224408cbc411402943912cb0dc4bc66b60656a1b9d168435c584426c93d
5. 0x956e3bef88ae76a2c0f02d7da306aac4bf371f808024154bdf4d8c058d20e2e4
6. 0x043a9b7711b85d38e6b73c295b87f0e7ba36cc35a6d93b9492ec73f1b1a0020e
7. 0x2dfd5e195245f9043bd359a3adc5c34bb0e0f14d2b13c5738ceb76b08437507e
8. 0xf720fe6d3e1135cab97a5a3383acae161d7311a2fe80dcc018bf01c5b9440ba6
9. 0x1dd9e261eb4d34e7f2dfcde795f255b50479bc2fd0a14d00c8da317acc42a5a1
10. 0xca3367412c7636badca4386a6e28f30ab27593a82340d0eb1df9f49b828fc098
11. 0xf9e66ad82c99863bac58b8de555aa54db7d87d48053b517aa31e45b13c80299c
12. 0xbda213f244467a05027904a8f73b83cb22b4e670fdccc5bdc0e1acff8d5dc5ac
13. 0x24635ce9cb998a7f0315d48529c53cf1d5cad881b86cddade3f316f35faa0416
14. 0xc837737eae003d6217621fce98752787bb2b4be80aad499398bcd6fa49bd6996
15. 0x537331ef190eaefb4419f2a4558b952aaf9435d759df0b0c118b7df609ec1687
16. 0xfc183bee85dc11a067fb710c6eb88824b94a516ddbdf2717b839e672a2206a7e
17. 0xb5916fb7a3e87dc0702e46eeadcd22652e2e1e755f8d429cc7a14a67a350b51b
18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90