Evidence row 218788

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://brain.testnet.usebrainchain.com/x402/tasks"
    ]
  ],
  "name": "BrainChain",
  "owner_address": "0xf848984c8a0d9e49cc9c97380c62b34c6f3b97d1",
  "raw": {
    "accepts": [
      {
        "amount": "1000000",
        "asset": "0x1eC185467cA2D5d1c24f0EdCB91301Bca4d0a787",
        "extra": {
          "assetTransferMethod": "permit2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:46630",
        "payTo": "0xf848984c8A0D9E49Cc9C97380C62b34C6f3b97D1",
        "scheme": "exact"
      },
      {
        "amount": "1000000",
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:84532",
        "payTo": "0xf848984c8A0D9E49Cc9C97380C62b34C6f3b97D1",
        "scheme": "exact"
      }
    ],
    "description": "Jev hires a model for your task and grades the result. Rejected work is refunded.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "brief": "Summarise the release note below for a developer in three bullet points.\n\nRelease note: ...",
              "levels": [
                "Accurate, three bullets, covers every change",
                "Accurate with one change missing",
                "Inaccurate or not three bullets"
              ],
              "title": "Summarise a release note"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "order": "0x6d9a…41c2",
              "status": "/x402/tasks/0x6d9a…41c2"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "brief": {
                      "description": "What to produce. Include every fact the model needs; models cannot browse.",
                      "maxLength": 4000,
                      "minLength": 1,
                      "type": "string"
                    },
                    "levels": {
                      "description": "Quality levels, best first. The work is paid if it reaches the second level or better.",
                      "items": {
                        "maxLength": 200,
                        "minLength": 1,
                        "type": "string"
                      },
                      "maxItems": 3,
                      "minItems": 2,
                      "type": "array"
                    },
                    "title": {
                      "description": "One line naming the deliverable.",
                      "maxLength": 120,
                      "minLength": 1,
                      "type": "string"
                    }
                  },
                  "required": [
                    "title",
                    "brief",
                    "levels"
                  ]
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "order": {
                      "type": "string"
                    },
                    "status": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "order",
                    "status"
                  ],
                  "type": "object"
                },
                "type": {
                  "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/v1793019378/bazaar-icons/5de78ef9a94807b0.png",
    "lastUpdated": "2026-10-26T14:51:52.79Z",
    "quality": {
      "lastCalledAt": "2026-10-26T12:56:18.287Z"
    },
    "resource": "https://brain.testnet.usebrainchain.com/x402/tasks",
    "serviceName": "BrainChain",
    "tags": [
      "ai",
      "tasks",
      "grading",
      "llm"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Jev hires a model for your task and grades the result. Rejected work is refunded."
}

What the leaf hashes

{"body":"5d9dbfe104fe20a181b05cf82d32ef0953630b6cd03778e4c86307fe018284cb","id":218788,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793026653641320,"prev":null,"subject":"x402_bazaar:https://brain.testnet.usebrainchain.com/x402/tasks","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x67ee10f91cd473fc0352f4694e39177c99ee67bf8eab81c04480e9e2e2a0fa4b
2. 0xf9b61549b56cddf44e8d73e30a5fd1ab0dcb53017be39dcf4bd68aa26f8d41ef
3. 0xb45866847d7fd21967315be78ba5332f1a56c1775b2361a5011c73be6a5c80f1
4. 0x7756020c13faa3da86d0cf57c673ffec4a804bfaffe54b144189e831e1da88a6
5. 0x9b002004e4998cad713ef6d2e8c8bce6e40dfcf4a0ec1941189ef30511a57111
6. 0x9452fceca1b45362d585a80d4c763f0619521b437ba7aadbafdb5af559d07b49
7. 0x14b3d3c2d5b0810f1b778b465807364541dbe40bed0fb8ee093224b29bad6450
8. 0x941f810a93787b7ce4c4baae1ab782ef87214def01d27354b112f4967bb97e92
9. 0x13288c9f27a5bd23388a0ba6abf632e55acfde3a5ac34f9fa55b4fe5acfadbcb
10. 0x5dcc212c9908f2e34dd2b4875dc4504249562165079f2f9e4c59886cedb5b544
11. 0x077c74551bfc77d0c61421c3d34c02b1086f7d8fae7a09ac5ef6d43246c34a52
12. 0x260682fd6ecd274e73505c5e0bd798abdd0e702afca4f8eebd4331b607a6b175
13. 0x5f350d70c252ff1169c0210fd45fce1b0ab8d7316f048741a9e90a6c8cb65dcf
14. 0x9a79c65e077cd9da9d436b3ade6f5ddc0d244510c4d5903ef2f02d81205f7666
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae