Evidence row 548591

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://payments-intel-production.up.railway.app/v1/token"
    ]
  ],
  "name": "payments-intel-production.up.railway.app/v1/token",
  "owner_address": "0x4421dea0f91e67608b52bce35d9fb2a3574e4453",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x4421dea0F91E67608B52BCE35D9fb2a3574e4453",
        "scheme": "exact"
      }
    ],
    "description": "What are the symbol, name, decimals, contract address and issuer of this stablecoin on this chain? Cited stablecoin token facts from a prepared dataset (USDC, EURC, USDT, PYUSD, DAI on the chains /v1/chain covers, where a permissively licensed source lists them): symbol, name, decimals, contract address, chain, issuer, each with a source citation and license. Fields not established from a source are the string \"unknown\". Malformed input and tokens not in the dataset return 400/404 and are never ",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chain": "base",
              "symbol": "USDC"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-13",
              "note": "...",
              "sources": [
                {
                  "id": "trustwallet-assets",
                  "license": "MIT",
                  "url": "https://github.com/trustwallet/assets"
                }
              ],
              "token": {
                "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "as_of": "2026-10-13",
                "chain": "base",
                "chain_id": "eip155:8453",
                "decimals": 6,
                "issuer": "unknown",
                "name": "USDC",
                "source": [
                  {
                    "fact": "decimals",
                    "source_id": "trustwallet-assets",
                    "url": "https://github.com/trustwallet/assets/blob/master/blockchains/base/assets/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913/info.json"
                  }
                ],
                "symbol": "USDC",
                "website_listed": "https://centre.io/usdc"
              }
            },
            "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 / mint address (give address or symbol)",
                      "type": "string"
                    },
                    "chain": {
                      "description": "Chain slug, name or CAIP-2 id, e.g. base, solana, eip155:8453",
                      "type": "string"
                    },
                    "symbol": {
                      "description": "Stablecoin ticker, e.g. USDC (give symbol or address)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "chain"
                  ],
                  "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": "2026-10-27T10:11:10.372Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-27T10:11:10.151Z"
    },
    "resource": "https://payments-intel-production.up.railway.app/v1/token",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "What are the symbol, name, decimals, contract address and issuer of this stablecoin on this chain? Cited stablecoin token facts from a prepared dataset (USDC, EURC, USDT, PYUSD, DAI on the chains /v1/chain covers, where a permissively licensed source lists them): symbol, name, decimals, contract address, chain, issuer, each with a source citation and license. Fields not established from a source are the string \"unknown\". Malformed input and tokens not in the dataset return 400/404 and are never"
}

What the leaf hashes

{"body":"1d996b0bd4f7889f6c8498a35ebe460efe17125e089ed50c6e8481139804ca42","id":548591,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133316539330,"prev":453424,"subject":"x402_bazaar:https://payments-intel-production.up.railway.app/v1/token","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x4041bf581a5fe846d4d9e82ee8535071f7bdbc55e031c76935e607d2d37f8c4c
2. 0x80813c50e8d76148e757d3a3b77b51bade2cb20f8ee5ea4d9193779b8e174fa9
3. 0x0a191dc023aac7ba95c3686f6483352fa2ef9450b56b800ad589b7b365ecbd8c
4. 0xe38d38f681c32cb4c61f880c420ae54cc88ca58619b4630c7472d16f35ff369d
5. 0xe02698ff141144f2ca3a97f5fcab63db0293177d1efa1b957836595bafefbfad
6. 0xf2ece2a6c9e88756d65ff9d0f5d3797fd9384a9ae0d69d102d2ae7f562fe0c3c
7. 0x1024383a336432b28bf110f3efbe653e69a3fc2af6180ad2bdac4a7567b1ddd9
8. 0x55c90091d260b15ea6117c41effc9cb02f220a8e38977be82e955cdaafa7296f
9. 0x35901615dc9f453212a6fc7dbd91defba8a283279761c59b585f1297691272b6
10. 0xeba79c58e4a3ef2db94e833d53b12f55c84bc102535f34caedc4d30bf3550827
11. 0x4f137633fff61e4e593fd379320dee6ab066de0db156d01c93cb3888d4cd2051
12. 0xbac4a74052976278393cfcc6a341f6cfd372f2fd8909eeffcc72872579289c40
13. 0xe097a5c0640b3c074fef1c9f5fe91898965687ad755f1c27c31462a60e313f0a
14. 0x1de9caca1fa6dbbe090ee48dad5f962bbfd09856fd897edc8c3c110272d35c56
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4