Evidence row 548389

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://chain.openverbs.com/v1/nft-metadata"
    ]
  ],
  "name": "NFT metadata",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "6000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Resolve one NFT (contract + tokenId) into normalized metadata: name, description, image, attributes and token standard (ERC-721 or ERC-1155). Reads the on-chain tokenURI/uri, then fetches and normalizes the metadata document (ipfs/ar/http/data), rewriting ipfs image links to a gateway URL. Returns `found:false` for non-NFT contracts. Live reads with automatic endpoint fallback.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "chain": "ethereum",
              "contract": "0xb47e3cd837dDF8e4c57F05d70Ab865de6e193BBB",
              "tokenId": "1"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "chain": {
                      "description": "EVM chain to query. One of: ethereum, base, arbitrum, optimism, polygon. Default \"ethereum\".",
                      "enum": [
                        "ethereum",
                        "base",
                        "arbitrum",
                        "optimism",
                        "polygon"
                      ],
                      "type": "string"
                    },
                    "contract": {
                      "description": "NFT contract address.",
                      "pattern": "^0x[0-9a-fA-F]{40}$",
                      "type": "string"
                    },
                    "tokenId": {
                      "description": "Token id (decimal or 0x-hex integer).",
                      "type": [
                        "string",
                        "integer"
                      ]
                    }
                  },
                  "required": [
                    "contract",
                    "tokenId"
                  ],
                  "type": "object"
                },
                "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"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:09:12.895Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:09:12.761Z"
    },
    "resource": "https://chain.openverbs.com/v1/nft-metadata",
    "serviceName": "NFT metadata",
    "tags": [
      "nft metadata",
      "nft token uri",
      "erc721 metadata",
      "erc1155 metadata",
      "nft image"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Resolve one NFT (contract + tokenId) into normalized metadata: name, description, image, attributes and token standard (ERC-721 or ERC-1155). Reads the on-chain tokenURI/uri, then fetches and normalizes the metadata document (ipfs/ar/http/data), rewriting ipfs image links to a gateway URL. Returns `found:false` for non-NFT contracts. Live reads with automatic endpoint fallback."
}

What the leaf hashes

{"body":"7bf34dae3a98d1abd1f2c6e7598aa03d35c92df673901c5038c0b1abba1692fc","id":548389,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133298167989,"prev":72245,"subject":"x402_bazaar:https://chain.openverbs.com/v1/nft-metadata","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. 0x475f1a5a05e981e7e6500f95b98229078dd7c76714829ea111e469afb300c8d1
2. 0xa24cf8c7e11f750d9e3f6d9d8f729df4cf62464308a0410d1c51f014a9cc2cf5
3. 0xc97aa0c179f01f8451902523af0c1def93bdaa2c9784dc14e5e93001dc910994
4. 0x415492a4a7ce0362dc48656f1416eb885a26db237f4af431510b2e9fb645fee6
5. 0xf7d0fef9aae5c9551af2effb43d96be8ac95da0a202eaf32584b595a9ad9e8de
6. 0x36dd5a1e4e921f202807943629e4f6040c4a02e04fa599040848e60dbc2d5134
7. 0x6bcc6198b513be60f8aa15762080790898464dc1e4d862eb91d50cf7aadb5da8
8. 0x22fc7944e9ae16b7ce0e3117f7affddae90727d66dc4bdc68b12c5c25c005e23
9. 0xa8c682bd4a72a78e3c63c306f372833945cd13cf159c39ae0b0ac246e26a0f23
10. 0x214018c1177b8b367c164a836343d12f1ae7fd92ba57804e70ab729aca032031
11. 0x7273dde82b66d8a1ea8a7f26c98eebfd82f7fd2b4a39eea2752f1b3a00587c00
12. 0x84a7deb20d980d7ddf0eb089162b3d962c18f6c0ca46af19476c3066a5b827f3
13. 0x836e1796750a28d286ffaa8d273d250fe348c563336bf2d30cfaf1001d95f677
14. 0x80ede9e5d428e39db26928b1d08254ff1241f1d7e091fd2e57130fbb4423162b
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4