Evidence row 123259

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://twin.unykorn.org/research/book-search
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: b76e9d4bf22de1dc28777bd6f76918727cdb972074bd155c3ce80d4f318a9e66
Leaf: 0x16cc1d61972577d7941a0612b74b4713e52ab3901270940dc2693281bf3ea287

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://twin.unykorn.org/research/book-search"
    ]
  ],
  "name": "twin.unykorn.org/research/book-search",
  "owner_address": "0x7d9a65d06dcc435a52d5880c6310bd6e96c156db",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
        "scheme": "exact"
      },
      {
        "amount": "3000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "maxAmountRequired": "3000",
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "52EqTZigRAnBphuYAuREjQJx5H5ryyc1RETpDR2dZFQp",
        "scheme": "exact"
      }
    ],
    "description": "Book search (Open Library): titles, authors, first published, ISBNs — Genesis402 / UnyKorn Operator Network",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "params": {
                "q": "the bitcoin standard"
              }
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "evidence_hash": "sha256:<64hex>",
              "generated_at": "<iso time>",
              "limitations": "<text>",
              "ok": true,
              "receipt": {
                "amount_usd": 0.003,
                "receipt_id": "g402-<16hex>",
                "tx_hash": "0x<64hex>"
              },
              "sources": [
                {
                  "name": "<source>",
                  "ok": true
                }
              ],
              "type": "book-search"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "params": {
                      "properties": {
                        "limit": {
                          "description": "max rows (default 10, max 30)",
                          "maximum": 30,
                          "minimum": 1,
                          "type": "integer"
                        },
                        "q": {
                          "description": "required",
                          "type": "string"
                        }
                      },
                      "required": [
                        "q"
                      ],
                      "type": "object"
                    }
                  },
                  "required": [
                    "params"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-06T05:51:13.485Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-06T05:51:13.334Z"
    },
    "resource": "https://twin.unykorn.org/research/book-search",
    "tags": [
      "books",
      "library",
      "research",
      "infra",
      "ai"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Book search (Open Library): titles, authors, first published, ISBNs — Genesis402 / UnyKorn Operator Network"
}

What the leaf hashes

{"body":"b76e9d4bf22de1dc28777bd6f76918727cdb972074bd155c3ce80d4f318a9e66","id":123259,"kind":"listing","method":"baseline/1","observed_us":1793025622936277,"prev":null,"subject":"x402_bazaar:https://twin.unykorn.org/research/book-search","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON