Evidence row 1791812

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts/by-external-key/smoke%2F20261031225256"
    ]
  ],
  "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": "Look up an artifact by the external_key it was stored under (your own name for it, slashes allowed), in one of the wallet's projects. max_age_seconds turns an artifact older than that into a 404, for caching. Returns the artifact. 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": {
              "external_key": "smoke/20261031225256"
            },
            "queryParams": {
              "project_id": "019a3a10-0c3e-7c4e-9a51-2f6d8e1b4c70"
            },
            "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/by-external-key/:external_key",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "additionalProperties": false,
                  "properties": {
                    "external_key": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "external_key"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {
                    "max_age_seconds": {
                      "type": "string"
                    },
                    "project_id": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "project_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": "2026-10-31T22:53:07.215Z",
    "quality": {
      "l30DaysTotalCalls": 0,
      "l30DaysUniquePayers": 0,
      "lastCalledAt": "2026-10-31T22:53:07.215Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts/by-external-key/smoke%2F20261031225256",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Look up an artifact by the external_key it was stored under (your own name for it, slashes allowed), in one of the wallet's projects. max_age_seconds turns an artifact older than that into a 404, for caching. Returns the artifact. 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":"743557935708d1d6066346d570b86a37cf6a8e99d80d221168e72d8846f3c09d","id":1791812,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559993811252,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts/by-external-key/smoke%2F20261031225256","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. 0xaaeb03faff3ee013a694b1d92f2c78cf3fe99739cdb132170348f95a0089fcdc
2. 0x98df3d816ee2c19f6fc5e3ac6efbfe672ab480c6fed270e5c0db02ed4c0d01af
3. 0x9e6e64746452476e2222b55463ff9e0b663966e1a9e1020091cfed3e306dfbd9
4. 0xf7cd96b1aa795497fa9b5014653a07d0cd0a1fe3a6d049b9a653fd408974442e
5. 0xe7ec0a00674098cd6fff1dc9a0bf70ed4f3e41ef3294f4f3db09ccbd96dde7e5
6. 0x00624662d9571f5add8889ffa714285c42e77c157f82109fedbbf28cb9de7fed
7. 0xbf51a5d46e699e6e5f3314a195a8b23a790b4b7744d76cb8cf2476dcd7a19614
8. 0xe742eb820bcd6390016fc89e0eb3c779dda224896831591ce37eb7c5ddcd85c8
9. 0x119393c6a76ae032891063da36d9417055b59fedb582b749bbb5be71d0e0245c
10. 0xfa25e16707797d79dc822cbe58a70b02bd67daa088d19dabab0568ad2a03e2a1
11. 0x933843bcd92c78ddbe422a56184cbf6f57453fd6b53fa894232820f8ba9e73eb
12. 0x476530ffc19aae7cf4d942d712ef43a9c0941400d05806b52102561540ace3b4
13. 0xfd5f1d6a59b2aba0ae7d4cc49eabef2c135da7aea5815cd4367f515be1396c24
14. 0x110c6c21e77668de1becd70345e909cedabda185c5eca2a47425fab10ef478be
15. 0xc88d127644e311620e3bcad9c976ab2c79963799278768230b1762de9b7cd724
16. 0x8339aa87501c4d4f8b38a13e480a7c563957e09fb5711bed7cf189d6787f960d
17. 0xb5916fb7a3e87dc0702e46eeadcd22652e2e1e755f8d429cc7a14a67a350b51b
18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90