Evidence row 123267

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://twin.unykorn.org/research/paper-search"
    ]
  ],
  "name": "twin.unykorn.org/research/paper-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": "Scholarly paper search across 150M+ Crossref records — Genesis402 / UnyKorn Operator Network",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "params": {
                "from_year": 2022,
                "q": "tokenization of real world assets"
              }
            },
            "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": "crossref-search"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "params": {
                      "properties": {
                        "from_year": {
                          "description": "optional",
                          "maximum": 2100,
                          "minimum": 1800,
                          "type": "integer"
                        },
                        "limit": {
                          "description": "optional: max rows (default 10, max 40)",
                          "maximum": 40,
                          "minimum": 1,
                          "type": "integer"
                        },
                        "q": {
                          "description": "required",
                          "type": "string"
                        }
                      },
                      "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": "2026-10-01T21:10:24.448Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-01T21:10:24.312Z"
    },
    "resource": "https://twin.unykorn.org/research/paper-search",
    "tags": [
      "research",
      "academic search",
      "papers",
      "citations",
      "infra"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Scholarly paper search across 150M+ Crossref records — Genesis402 / UnyKorn Operator Network"
}

What the leaf hashes

{"body":"846f60ee647e45bcae31e2d0c1f3e5e5d874eea8866325a854e22142991ff8f2","id":123267,"kind":"listing","method":"baseline/1","observed_us":1793025622951500,"prev":null,"subject":"x402_bazaar:https://twin.unykorn.org/research/paper-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).

1. 0x3ccce35f3b054b19dd590c9ba5833092b110e254508f0de675072f828959f87a
2. 0xac062edd62bb49bd0b09d497ee03aa105ea0a48f0e891c8df317d5c455d9e1aa
3. 0x352838e46433fe17bab57149d8f8b15d1720b2575c54a0545ca518bf6c0174d1
4. 0x9cd286c948583513638d875c7461d4fb2949c4eedf38f79b024a87ab6ef7d5e6
5. 0xac121b377a4729746c70d81213a3247d3d2bb857dab5a12f3ffdd4e5307e8b86
6. 0xf601e7a9170bb0ac29d39c784418768f120559737ccd673e253f446b04b85c1a
7. 0x059556689442b52147dc7cb25a94a01dce0078dd6efb9b85874cebfb132725e2
8. 0x0c284845ab69debd69c8241dc0773eaed394187b0945788bbef28cfc8c4fa144
9. 0x1c592f2665e7b81579da157f1d44a1e38ac2b0cdb7ad29c373d89d63f325fbb8
10. 0xae66718d5a1d562c4f24366c92ce0f9cda65031931b8a838a2d71f1f81f474ea
11. 0xd7dd18a37a5bb07e81a8083d8d1469e052ceebb2814b00f5a8d4f4cd181a5108
12. 0xd04df0f7f3be4d014b4cea8172ada286fbcf5bcb32ae1b281704fd75627b661b
13. 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae