Evidence row 257513

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agents.crowdspark.me/v1/chain/token"
    ]
  ],
  "name": "Agent Tools",
  "owner_address": "0x0dea0030a17bf886543a757c55924710258c2eec",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x0dEA0030A17BF886543a757c55924710258c2eec",
        "scheme": "exact"
      }
    ],
    "description": "Token contract inspector for Base, Ethereum, Optimism, Arbitrum and Polygon: is it a contract, ERC20/ERC721/ERC1155 detection, name, symbol, decimals, total supply (raw and formatted), owner, and upgradeable-proxy check (EIP-1967, beacon, EIP-1167 clone, legacy zeppelinos) with implementation and admin addresses. Read live from public RPC. Use before quoting, swapping, listing or paying with a token.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "chain": "base"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
              "chain": "base",
              "chain_id": 8453,
              "decimals": 6,
              "is_contract": true,
              "name": "USD Coin",
              "owner": "0x3ABd6f64A422225E61E435baE41db12096106df7",
              "proxy": {
                "admin": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44",
                "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779",
                "is_proxy": true,
                "type": "zeppelinos (legacy unstructured storage)"
              },
              "standard": "ERC20",
              "symbol": "USDC",
              "total_supply": "4299464528.64453"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "address": {
                      "description": "Token contract address (0x...)",
                      "type": "string"
                    },
                    "chain": {
                      "description": "Chain, default base",
                      "enum": [
                        "base",
                        "ethereum",
                        "optimism",
                        "arbitrum",
                        "polygon"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "address"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T15:42:23.482Z",
    "quality": {
      "lastCalledAt": "2026-10-26T13:25:39.187Z"
    },
    "resource": "https://agents.crowdspark.me/v1/chain/token",
    "serviceName": "Agent Tools",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Token contract inspector for Base, Ethereum, Optimism, Arbitrum and Polygon: is it a contract, ERC20/ERC721/ERC1155 detection, name, symbol, decimals, total supply (raw and formatted), owner, and upgradeable-proxy check (EIP-1967, beacon, EIP-1167 clone, legacy zeppelinos) with implementation and admin addresses. Read live from public RPC. Use before quoting, swapping, listing or paying with a token."
}

What the leaf hashes

{"body":"fffabcd81fccf9f345d6ecf397983835dec8cedf6f609d6dd4399f4f6176fa00","id":257513,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793029766349052,"prev":219295,"subject":"x402_bazaar:https://agents.crowdspark.me/v1/chain/token","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. 0x40683dc8fac52c6f9e53fb56ba46152793ba43a96b13bdbc3126b97dff0359a7
2. 0x8eeb0aacb4943aa1a7111b40d8e06daa2ad61413e1e179065f5890f00840ea4f
3. 0xf26814b0362a2411c81a82049c25fc05cba9a433718e7098b1c146fdc05c977a
4. 0x81fc3a8bb0effd475ba366a0a24f09cf5cfc079f8cdc8c2db60abcec64347d5d
5. 0x6a280f62fa42c08940ccceb67bc645559c47c4627e11efe84d0e4b8a52a1d7f2
6. 0x12acb0cd12c2aaccf7f1e45209e8f9291261984ab98c9ad59832ead33a94ca0d
7. 0x3462533eb23b8ca527551b98b963f00852037fc3ae1f2afbbfc37ea6040a6c10
8. 0x6c0933e2d6c5db9c48d456cc4e7dcc724b81f2a22dddc90fdb280c409c867fec
9. 0x4546316647c2da2f40bbf65e58c217cf4da807fa8db1a8102842d3d68f88a336
10. 0xa22eb09d48f0af576480334a704954e6e8556d9981bdf6546be78cf11ad8843d
11. 0x6ec69a305a23b604ab679d75c3502d235953d73d9c2a74b16fb74b49af695fa0
12. 0xe2bb2a30c74e0bf16b8b75c332bdd45334d0338bef3f3022b7ea7b55718e1369
13. 0xd406739acce2ba016f8d49081b15f266a4ea4a0b0fc5ef171c89c8fd2dda4d80
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae