Evidence row 526647

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": 8,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-26T14:51:52.511Z"
    },
    "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":"7ad8dc487bfb59b07b9abb3addad66b747af4740b427f4783e225884cfbb6730","id":526647,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124789934592,"prev":278689,"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. 0x27f9a088c5e41f8a17dff14e9fd8e78676d957c31232bc374cd23d01371919ac
2. 0x2ab9b78105f7dd79f5f45ba3dbbe1e824f8349da5448315549c56483211e7b5d
3. 0x3546203f94166e7d343afc7ad63c1ccd58d30ea86ed035bac91518ba9c40cb8e
4. 0xfe5092c5de4bdd110aeec17420064f824c706281f7a37ce3675cdfd808723ef5
5. 0xdff6f846d04922e90f187bae3c42ba5d40ae9fb3558a899dfbb83b4fd5a131ab
6. 0x9c445bc3ea39cb26db33a05f055e45815cc416021ffb3ca51066c3fbb3a25b18
7. 0x240aa3c166a70dccc04f820aaaaf4c6f09d9f9a4f3e66cab1855f8c920b49b86
8. 0xcb305a41e28e065c1d8c9b204f37d94d417540126378ed078b05204219bf9543
9. 0x252d1ee1967388b27981d5820fa515b9e52efa26da38ec686c1e8553a8759fc7
10. 0x58a55125c2389f16bd21647419b9fa69b354f91d8dd589440e8095b1281b3947
11. 0xbae4a65d8ae80540633da98a42bc7238b1aae389589d7285d2f85046a743e3a5
12. 0xf5aa0adf486bca586314afc4935e732d521d3d8275e51eb4c8d2de46b00ea2c1
13. 0x28be2f2303fcac4decdb6323b0f4ee8f8a31038beb758eaafc604a98626292e4
14. 0x8ff18b1523f9fbdd16a5796cbe184b46854c06256508af8de5509b598370c725
15. 0xa383a1cfe9b3f6af67eb4c7642564b9424d46d7fca90e7ba175d549f8b67dd0c
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4