Evidence row 547796

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": "2026-10-27T14:38:01.922Z",
    "quality": {
      "l30DaysTotalCalls": 13,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-27T14:38:01.466Z"
    },
    "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":"9e772051168cda5e7bd9047690d549def77575792832cc7a0342b79bb77c80f4","id":547796,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133215534780,"prev":526647,"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 2026-10-27 (273461 rows).

1. 0x6a74f9e0708600a989bd13d2e3227b5f71d9e9e71a338ee6cddac10042355cc5
2. 0x705394b126eeceb91dc7fc6bb9b2eb05c76db7e87e1be5bf23f628c95189dd10
3. 0xa4d82f3e8b8fc9d58ce9c1011c4b75e8b3a267315c107d753968906462d3aa0f
4. 0x4846abf35bd3484407ddd39c5026418782e79c6cd55c8ec96dadba23f6c37a07
5. 0x8ae1265bcb113899fb1a13ceae6a15e7447159afc95f5a6ab10c395a488205c7
6. 0x34cd9fe74872be59b5a0d4732ab80b71a574da0a2a1fd671cccacec8348c8558
7. 0x7e32164c0a3bb83c9e514d9c3fd9f82e6513c77427da693a4f52bf67cf11c707
8. 0x6465a802f7cb4f04ef5994dee00f9539198c0f0292e7ba4d568c1e2de06087e3
9. 0xc1a4db7cb7a8b258681375082079227e1bd2a3b860107bacffad8332c8f4bbc3
10. 0x03efc24a2af188805ea4821f44beb9452361f76d1f0bd75006861e3c6e2c7eec
11. 0xf948df558d360ef6260367a5acb11bce86c964cb5608d9fbd474976a57db8d7b
12. 0x1907258a29a881c6f59707e890e9f73f7aff1ace32101f20e208f76e9fac9a60
13. 0x927616fada4e04588c09f6e02e8f6e3a1351bac8355e394da3bd0bf249a5c503
14. 0x3c5462812bd2f841e3d7deefc01555f18262fe5e0d5a7eb155330b7a7cb0388e
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4