Evidence row 1790976

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts/:artifact_id/uploads"
    ]
  ],
  "name": "Artefaktum",
  "owner_address": "0xeccc9f03eb79c6a5b0fbd919f95656557e6a6173",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0xeccc9f03eb79c6a5b0fbd919f95656557e6a6173",
        "scheme": "exact"
      }
    ],
    "description": "Store a new version of an artifact the wallet owns, kept for 30 days: returns a presigned PUT URL for its bytes. Body: filename, content_type, size_bytes. Price by size_bytes: $0.01 up to 10 MiB, $0.05 up to 100 MiB, $0.50 up to 1 GiB. After the PUT, POST /v1/artifacts/{id}/versions/{version_id}/complete (free, sign-in-with-x). No signup: a wallet's first payment creates its account and a default project; the same wallet later reaches the same files.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "content_type": "application/pdf",
              "filename": "q3-report-v2.pdf",
              "size_bytes": 501877
            },
            "bodyType": "json",
            "method": "POST",
            "pathParams": {
              "artifact_id": "01a1942e-a000-74e0-9a52-2eae26c666cd"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "artifact": {
                "id": "019a3a12-5b7d-7f21-8e3a-6c4b2d9f0a18",
                "status": "pending",
                "version_id": "019a3a12-5b7e-7a90-b1c2-3d4e5f6a7b8c"
              },
              "upload": {
                "expires_at": "2026-10-31T10:30:00Z",
                "headers": {
                  "Content-Type": "application/pdf"
                },
                "method": "PUT",
                "url": "https://storage.artefaktum.dev/presigned-put-url"
              }
            },
            "type": "json"
          }
        },
        "routeTemplate": "/v1/artifacts/:artifact_id/uploads",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "content_type": {
                      "type": "string"
                    },
                    "filename": {
                      "type": "string"
                    },
                    "infer_lineage": {
                      "type": "boolean"
                    },
                    "run_id": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "size_bytes": {
                      "type": "integer"
                    }
                  },
                  "required": [
                    "filename",
                    "content_type",
                    "size_bytes"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "additionalProperties": false,
                  "properties": {
                    "artifact_id": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "artifact_id"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body",
                "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": "2026-10-31T22:57:42.236Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:57:41.957Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts/:artifact_id/uploads",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Store a new version of an artifact the wallet owns, kept for 30 days: returns a presigned PUT URL for its bytes. Body: filename, content_type, size_bytes. Price by size_bytes: $0.01 up to 10 MiB, $0.05 up to 100 MiB, $0.50 up to 1 GiB. After the PUT, POST /v1/artifacts/{id}/versions/{version_id}/complete (free, sign-in-with-x). 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":"b55b6b9c78dc8197b34b243630c18f3bb2d1bb8090c90bce1f48fd0ee30f3752","id":1790976,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939316117,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts/:artifact_id/uploads","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. 0x4b4f984e8c46c038667b1949876f131e2d33fe32b1fd98b67d04bddd81fb234d
2. 0x81aa5bae7a8f281dacbfeda29bccdda0cdfe50d367cb3e2a0158961d3801703e
3. 0x238911205e0b7e667e398020db457d5faef83672eeb22eedbb9a3d535e2348ff
4. 0x35f14ba9528e0f4212fe7663cadbdabedce77e95ff5838268578cc212bb773db
5. 0x4647f6adac618cf78f88a86943ac0422119e7363f50ec68e8255b6c54bf3d7e6
6. 0x61dece65ef8f5dc513cfb15eda6f874ad98e271612db5f0e6dad63f26ac54739
7. 0xcb77fb21d2bbfc7c82d9fc9a5d36c20a6158db6e7e1587a15092c2b1f64be9b9
8. 0xaa9a4c3a2d4575711e8640e0f109575bd541a22308293a2aa41f40109510b6c9
9. 0x9095c93ca491de8a9c4a7cef60a055175c63a7e92348fa64ac700beb71c1660a
10. 0x7e2ac32c1b865970d959cf66f578cf05632ea50f546a8fe93e7d398ee9d7eb63
11. 0x66a9bc181d9e56c53d489ee2cb7942cdb5ded4b6814ed9127333e4a5d02acfe7
12. 0x216487fdb5812387ef5bd703d60ea8f043773d5db562b3ff2e11dba79509bf1b
13. 0x8aa214258cf763ac22ad2503df59c82b987a34bdb8f8ffe282ed4454b90f50bb
14. 0x6c979ceed347ae2f49a398afce74e46416fbc8bf2d649ac7be77ccbc81b2ba03
15. 0x0e3f78943343406ddd3828dd4ca4b5a188e80ffe3ac87d64d979448ee11c1cc5
16. 0x00ec7149eb024693951d82cb635dfa183f4f34dae011e77ba0420a38a378e0aa
17. 0x97f6f39e601b6ef0e47b730aa0488b718c0d7882ad840342bbd7d3a705a1b3a2
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90