Evidence row 548425

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://payments-intel-production.up.railway.app/v1/chain"
    ]
  ],
  "name": "payments-intel-production.up.railway.app/v1/chain",
  "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 basic facts of this chain (CAIP-2 id, gas token, explorer, x402/MPP settlement, stablecoins)? Cited chain facts from a prepared dataset: CAIP-2 chain id, gas token, finality class, block explorer, whether x402 and MPP settle there, and stablecoins. Fields not established from a source are the string \"unknown\". Unknown chains and malformed input return 404/400 and are never charged.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chain": "base"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "as_of": "2026-10-12",
              "chain": {
                "as_of": "2026-10-12",
                "block_explorer": "https://basescan.org",
                "chain_id": "eip155:8453",
                "finality_class": "unknown",
                "gas_token": "ETH",
                "mpp_settles": "unknown",
                "name": "Base",
                "notes": [
                  "..."
                ],
                "slug": "base",
                "source": [
                  {
                    "fact": "chain_id",
                    "url": "https://docs.base.org"
                  }
                ],
                "stablecoins": [
                  "USDC"
                ],
                "x402_settles": true
              },
              "note": "..."
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "chain": {
                      "description": "Chain slug, name or CAIP-2 id, e.g. base, solana, eip155:8453",
                      "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": "2026-10-27T10:11:10.586Z",
    "quality": {
      "l30DaysTotalCalls": 9,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-27T10:11:10.402Z"
    },
    "resource": "https://payments-intel-production.up.railway.app/v1/chain",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "What are the basic facts of this chain (CAIP-2 id, gas token, explorer, x402/MPP settlement, stablecoins)? Cited chain facts from a prepared dataset: CAIP-2 chain id, gas token, finality class, block explorer, whether x402 and MPP settle there, and stablecoins. Fields not established from a source are the string \"unknown\". Unknown chains and malformed input return 404/400 and are never charged."
}

What the leaf hashes

{"body":"9fc8e617eaa56c170058244afecd599ca094f599d3559ff9fb4106d493dec647","id":548425,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133304510769,"prev":453297,"subject":"x402_bazaar:https://payments-intel-production.up.railway.app/v1/chain","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. 0x30723e2735fb8b5602291a5d9488dbd82db0f59e13d673926b8bbdeaa7ed76cf
2. 0x8741f53c7775166f8f7bc14d9cfb67908a4aef752b56ebf12586daf7a97a7b47
3. 0x7f567855bb9f59b409f2e9faff5255716abe2507f979fb1e568b27acb0f8f8a0
4. 0x6175f7df62f361a4d59a05e8ea854aef91d6b59bc8d3bfa2876cb7e5d775e61a
5. 0x4714494c8c2186040e43ab2bd6b9f07c19a864855508b1334c2a3698d9f0def0
6. 0xbf63f10ef482ff674967fcbd0e3118788a829b0f1031aba92305762a82112295
7. 0x5c1a89101b0929c0a4acfa4f86198c5d086b6a5c0c267f65eb782c642c6e77a2
8. 0x57edf6f1097a7a3750f9d80d5acd392689b8fa164e7e2df63e867b76a17bc695
9. 0x66fd24e5c29bd65ba7fbfafd397634513e37ebdd1386412ba8148bceb46328dc
10. 0x8b2a0c1569541e012096343578c3ab28498772d40e87d5b55d304a5ec608ce08
11. 0xa332aeedb5946e98183c6766ade34702b2bc8d9c73c47322780a8efc2e2a00bf
12. 0xc1b7c34b53a9fe9ca442a6957dc84259e1950987b7271aef733cbdcf0322901e
13. 0x2a25cd9926d8f2ef4726fd2a80f77b1ca202b6c3ca56aeb2f520555c93efd434
14. 0x595de2dea3b8fa56dbd6142dd78ae79f3e7169c631e41a844b100613abb3e430
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4