Evidence row 1790974

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.artefaktum.dev/v1/artifacts/:artifact_id/extend"
    ]
  ],
  "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": "Keep an artifact the wallet owns for another 30 days, counted from its current expiry or from now, whichever is later. No body. Costs the upload price of everything the artifact holds ($0.01 up to 10 MiB, $0.05 up to 100 MiB, $0.50 up to 1 GiB). Returns the artifact with its new expires_at. 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": {},
            "bodyType": "json",
            "method": "POST",
            "pathParams": {
              "artifact_id": "01a1942e-a000-74e0-9a52-2eae26c666cd"
            },
            "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/:artifact_id/extend",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {},
                  "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": "2026-10-31T22:57:50.518Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-31T22:57:50.231Z"
    },
    "resource": "https://api.artefaktum.dev/v1/artifacts/:artifact_id/extend",
    "serviceName": "Artefaktum",
    "tags": [
      "storage",
      "artifacts",
      "files",
      "search",
      "agents"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Keep an artifact the wallet owns for another 30 days, counted from its current expiry or from now, whichever is later. No body. Costs the upload price of everything the artifact holds ($0.01 up to 10 MiB, $0.05 up to 100 MiB, $0.50 up to 1 GiB). Returns the artifact with its new expires_at. 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":"132fa9b1e5e3d5ad4e87b9b5a96f82a906b8529771ea95c893ceb168d0b20ae9","id":1790974,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559939310490,"prev":null,"subject":"x402_bazaar:https://api.artefaktum.dev/v1/artifacts/:artifact_id/extend","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. 0x27ff61130fdcf45f223983ab5ffde1b38598c390757f73951b32897666ac885c
2. 0xd53d9ce92f95ee8bc85f97fdbb03d0e857a7f930ce6772a267f8b0cc584bd39e
3. 0x593ddac34becdd90276825d0310b4ec05b83b8906641306b4b31b9d2630c8dda
4. 0x3b4830a7748b25b81bf2fa0c32941064ef5b50ad2c257bb6fa83990c8433ea65
5. 0x1a1f78e711cbe76c0015bc4be9dae75301b5ab11243e8ad82911000eaff75b3c
6. 0xcd75940382309bd19825632f4e206e6a4b83f1674e5957d4b777229358644753
7. 0xf3bb10c4adbf206855cef9f717b28594efdbc37b6b1e8fe69918af0988863543
8. 0xeac9aaabc0d4341f93ca33f0181dc21cb946cc01fe5b4bfca6e3db4b2200e1aa
9. 0x582c2efb92031f3d10ffe115098fd9d2e2dcb316813525041480143dbbdf492b
10. 0xbe27b4a56b71a13b4e38353c43a2aea4c4c7df2438421893080b5c104c7db1f4
11. 0xc40a6b60588a1aceccd51912d0d1ebcf1a3504cd8713ff2e78468664400e58f4
12. 0xa1c64378b1becf0e37cf951b6857a7439217a9f21c3185f98f67b4c5244d25bf
13. 0x840f2ddc4be75904057731976db961e3f445b17d64d6af4c9dc2c387705007bf
14. 0x3a1fd02b7b783283e5af93120711d3c5437e55d0f3e68e16f18cfe19e54cafd1
15. 0xb9d6fdc8e6fb3f4feffa2c18849d74fc34d8708b574a778ae149241a90aaf20b
16. 0xa856ad79e6f29a2b5516257f0d4817172cca11251fe2e7e8f3911b105fe2b622
17. 0x02b3554752e71a19b12d7a76dbff436e85387226ceec89fdebdcdaf0122c2932
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90