Evidence row 1790982

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts/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 file for 30 days: returns a presigned PUT URL for its bytes. Body: project_id (from GET /v1/projects), filename, content_type, size_bytes, title; optional tags, metadata, external_key. Price by size_bytes: $0.01 up to 10 MiB, $0.05 up to 100 MiB, $0.50 up to 1 GiB. After the PUT, POST /v1/artifacts/{id}/versions/{version_id}/complete (free, sign-in-with-x). No signup: a wallet's first payment creates its account and a default project; the same wallet later reaches the same files.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "content_type": "application/pdf",
              "filename": "q3-report.pdf",
              "project_id": "019a3a10-0c3e-7c4e-9a51-2f6d8e1b4c70",
              "size_bytes": 482133,
              "tags": [
                "finance",
                "q3"
              ],
              "title": "Q3 revenue report"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "artifact": {
                "id": "019a3a12-5b7d-7f21-8e3a-6c4b2d9f0a18",
                "status": "pending",
                "version_id": "019a3a12-5b7e-7a90-b1c2-3d4e5f6a7b8c"
              },
              "upload": {
                "expires_at": "2026-10-31T10:30:00Z",
                "headers": {
                  "Content-Type": "application/pdf"
                },
                "method": "PUT",
                "url": "https://storage.artefaktum.dev/presigned-put-url"
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "content_type": {
                      "type": "string"
                    },
                    "description": {
                      "type": "string"
                    },
                    "expires_at": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "external_key": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "filename": {
                      "type": "string"
                    },
                    "infer_lineage": {
                      "type": "boolean"
                    },
                    "metadata": {
                      "type": "object"
                    },
                    "project_id": {
                      "type": "string"
                    },
                    "run_id": {
                      "type": [
                        "string",
                        "null"
                      ]
                    },
                    "size_bytes": {
                      "type": "integer"
                    },
                    "tags": {
                      "type": "array"
                    },
                    "title": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "project_id",
                    "filename",
                    "content_type",
                    "size_bytes",
                    "title"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "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": {
                  "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": "2026-10-31T22:57:27.14Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:57:26.889Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts/uploads",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Store a file for 30 days: returns a presigned PUT URL for its bytes. Body: project_id (from GET /v1/projects), filename, content_type, size_bytes, title; optional tags, metadata, external_key. 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":"4b13f58adc9059e146978c81f2cd10eef4796fa38903f504afb70c9a9b6b6df8","id":1790982,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939358158,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts/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. 0x6a64daed8871c85e2fb91eb9b47712a8c8062af9e4a9fba54f68f2815744ed71
2. 0x8f8229fcc1cc33116628441b08330a1b177624647ff58b0b97baa28d71900ddc
3. 0x98a63450123b78bcf21f5c4829d61a44fa0611a19d388aef60e636ac4da30ec6
4. 0xc1a998084774d5c68a55593b7d690869f08f540e20852d7f302bc82b842d09f5
5. 0xfeadae106387ef2c5a23d1ea6358a860598e435571febb85423d2585cab6923b
6. 0x3c4cc8f37e0b1cbaa4a2dbdce013b1a8c398efb79637aebd42ce1f4e3d56f387
7. 0xd90a094d5682220ce82e9d4722536fc32e5b20e5679e895709ac34b8b7a1858c
8. 0x235be1eb314bb939674694442d3f623fd4f09078ebab8648fec7765c271f2cfe
9. 0xac45c3137c2107dd6d8276c45f5fd1ca0ce339d539ef45f91a73917935fcfc4c
10. 0x4ce23bf7f815c1fca9ed97c9ed2767c84e28431fb8afbd3a9980433ebb0bdda8
11. 0x5087a1201006905e631e836f4e5b577e73f1e52421623bc7e8da04bf8566adcc
12. 0xb9e769552a4ec5c6497a5a5cdde2664f3c8dce153f8c781eff808dd6b24658fd
13. 0x2083851c78484f99ed7086ac61a83081da68bd1ce3b2dfd9a06ce2a7a13fdb11
14. 0x6e52ec74954b02fa6342c949413ce6ced87071b172b1bcf0f6191252f67257fa
15. 0x7c66173839ef153f08dfd346f7ea956e9226e1b7ff05bf4c6cf27436953f336b
16. 0xc1f6e8dd182b37cbb6e04d0e69486bd40d440934f8e373b9bae8cb78de508bba
17. 0x97f6f39e601b6ef0e47b730aa0488b718c0d7882ad840342bbd7d3a705a1b3a2
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90