Evidence row 125571

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

Kind: listing
About: source_record x402_bazaar:https://x402.agentindex.world/base/nft-owner
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 5b134e439f757b0289bb66b5df4c282a7deee6583c6df425bf8bbc0b74b835ca
Leaf: 0xfc1b6141381c49f81320bef6181b11782dd706ac1133a30667718aa087f62ad0

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.agentindex.world/base/nft-owner"
    ]
  ],
  "name": "base-nft-owner",
  "owner_address": "0xb3f32bdfe8d07825bc0d7387295ab1d7559ba69d",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d",
        "scheme": "exact"
      }
    ],
    "description": "Who owns this NFT? ERC721 owner lookup on Base mainnet via ownerOf(tokenId).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "token": "0xdcfeb48770c42a20428f025a69c093155829a11c",
              "token_id": 129
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "owner": "0xf70da97812cb96acdf810712aa562db8dfa3dbef",
              "token": "0xdcfeb48770c42a20428f025a69c093155829a11c",
              "token_id": 129
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "token": {
                      "title": "Token",
                      "type": "string"
                    },
                    "token_id": {
                      "minimum": 0,
                      "title": "Token Id",
                      "type": "integer"
                    }
                  },
                  "required": [
                    "token",
                    "token_id"
                  ],
                  "title": "NftTokenInput",
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "owner": {
                      "title": "Owner",
                      "type": "string"
                    },
                    "token": {
                      "title": "Token",
                      "type": "string"
                    },
                    "token_id": {
                      "title": "Token Id",
                      "type": "integer"
                    }
                  },
                  "required": [
                    "token",
                    "token_id",
                    "owner"
                  ],
                  "title": "NftOwnerOutput",
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-10T23:15:57.777Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-10T23:15:57.575Z"
    },
    "resource": "https://x402.agentindex.world/base/nft-owner",
    "serviceName": "base-nft-owner",
    "tags": [
      "nft owner base",
      "ownerOf",
      "base rpc",
      "erc721 owner",
      "base mainnet"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Who owns this NFT? ERC721 owner lookup on Base mainnet via ownerOf(tokenId)."
}

What the leaf hashes

{"body":"5b134e439f757b0289bb66b5df4c282a7deee6583c6df425bf8bbc0b74b835ca","id":125571,"kind":"listing","method":"baseline/1","observed_us":1793025626484899,"prev":null,"subject":"x402_bazaar:https://x402.agentindex.world/base/nft-owner","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).

0xfc1b785ae22a32c928a3ad1c24ffb337431fc83f1501fdb998353c4fb74403c2
0xeb502424acfa910d6b213cf8a9a83a04802cdffa4306e19018533db5f970bd5f
0x95c32d8de5bfaba854f0041e9f629233a5802008f6febc947928b61529d1a130
0xb50359a9a8b443c64a802dc0de02232ce7252a81838c7e1c48bd0ba815a8a800
0x3277eda47932369f6b5b649803821341c9965d64b821154ef4feafc562d94182
0x8669c36a88cb6a61365c3fa8d8e4c7a9c42e41a0c7f08ec0528ca27b65835348
0x4b974dc47208b65b5e5f0c0b51b4bc17332e9a19c3ddd3e35471d11ea0c9f433
0x4693de4ca7fd82d62e518ab16deb20f9ae6837395e814b30a0c047b43d682fdc
0x63e81cfd75312fe70586e362f887cff6fba0b3aa8a0751f1cd2f423e11b6fd30
0x0d9c6b15190d9e13a7cb74876b1fd47b5bba1e548abecd756ff8fd16658a6713
0x51bc8fcd224b36d2c60fa49f46f383ee8328191b9e73209ce8018f2612c3d42f
0xf8173f36b7a27e1bb0f6961a49501bba1d99349c5e11449d0d557fbaa910be0a
0xbee644d57738676bfb20eb90d6021f364bf883a8d54f8d17e9dc4749b4074c3d
0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON