Evidence row 1790978

Observed 1 Nov 2026, 19:05 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://api.artefaktum.dev/v1/artifacts/:artifact_id/versions
Recorded: 1 Nov 2026, 19:05 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: f9bd3203ee06e61eb198133e4dbfe1cd6719b3f3cd06e4bb3275c5c90fd1eaed
Leaf: 0x018f2616be20d40a03007b0214f3f9ed5fa2af6c0124783f6d4a61b3571d2597

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts/:artifact_id/versions"
    ]
  ],
  "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 every version of an artifact: filename, content type, size, sha256 and status. Costs $0.005 in USDC. No signup: a wallet's first payment creates its account and a default project; the same wallet later reaches the same files.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "artifact_id": "01a1942e-a000-74e0-9a52-2eae26c666cd"
            },
            "type": "http"
          },
          "output": {
            "example": [
              {
                "content_type": "application/pdf",
                "created_at": "2026-10-31T09:30:00Z",
                "etag": "9b2cf535f27731c974343645a3985328",
                "id": "019a3a12-5b7e-7a90-b1c2-3d4e5f6a7b8c",
                "original_filename": "q3-report.pdf",
                "sha256": "4f8b42c22dd3729b519ba6f68d2da7cc5b2d606d05daed5ad5128cc03e6c6358",
                "size_bytes": 482133,
                "status": "ready",
                "version_number": 1
              }
            ],
            "type": "json"
          }
        },
        "routeTemplate": "/v1/artifacts/:artifact_id/versions",
        "schema": {
          "$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": "array"
                },
                "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": "2026-10-31T22:57:39.027Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:57:47.669Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts/:artifact_id/versions",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "List every version of an artifact: filename, content type, size, sha256 and status. 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":"f9bd3203ee06e61eb198133e4dbfe1cd6719b3f3cd06e4bb3275c5c90fd1eaed","id":1790978,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939334897,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts/:artifact_id/versions","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).
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Day root: 0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3
Chained: 0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4
Published: On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90

How to check it · This row as JSON