Evidence row 279593

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": "2026-10-26T15:16:15.597Z",
    "quality": {
      "l30DaysTotalCalls": 8,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-26T15:16:15.376Z"
    },
    "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":"9c78a55dc8df5f1a14f075ecfcb268854811ee6a4a67107cf7de471879d9f14b","id":279593,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793042341739124,"prev":236559,"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 2026-10-26 (296695 rows).

1. 0xe8f5cd0769d60b64d7a13b014a0c024d022a3f1719ba080fb73014db513ac403
2. 0x5b291f1a9f6ab1c619529a958327e76a6349e71adfc5fcf9c4b6da136c9e9d5c
3. 0xabe3d3afda531e77af6795e49b75eb529df0b8da8f5b8a9a7e56e7fc65eb7514
4. 0xc7e554f6d241b21d09086596ac27f3aa1937b20d29ca7bd113a9c2463ffa1f02
5. 0x0b4ea5a4cce9bf71e4507de3740bdf13f018678f2eec4b88dbbcf633dced0932
6. 0x0a920a4c5dec698fa4232c0a341d6464078c6c76bf5c816e3882d38b93707cae
7. 0xfecb9780e632f9f12b7c1af7170c7e25a44c0c7dcc00f1d4fff234933530e50a
8. 0xefb705853f3d7309227825ec60b35651f6ca2eed0f4fc5098463caae2b8a4a3f
9. 0x19721d0a168d76f762a49b84adc1235746ffaea2a65d35def50d5ccb4982cfd5
10. 0x35130b879dd64c383ed4810a48a0a89a89658ed812c5177a30ce52551f474534
11. 0x11f999a56e0d8cc7daa64e4903eb41d6078ed2b930cfcc1858070d91536f22ed
12. 0x3d0b5282d5282c30fc9f86662367cab01d0dba65f13d2968391a7d087b79dfb3
13. 0xafcc1fe54cfe00a3a1de33df127340075f22433bb89848bbc81499cd7aca5b2b
14. 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae