Evidence row 453297

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": 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":"db052cd34c247839596ef831b19a8c1662ade6ee178d2d446b3be24ee452c90d","id":453297,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100619895329,"prev":279593,"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. 0x3a01644a6b3f98faada327b86932885a038f49177d01fc54341a7560cc9594dd
2. 0x5f20d3d2dcbe2172d242318006ac7e88bbdff2de1c433b3e9b70e1872df4549c
3. 0xd49d39ea122de458356dcb516bbfaeecbbcab8700e0429b2fafebecb084d8a03
4. 0x64619bd98246a8fe55db77b5782f57b01cdccd5cc30ecb18b0e4cd1afe19e342
5. 0x811f2363ed3138b668702f4f5cb774a36393f474ffc012665acbdce535f3a524
6. 0x5f5d6ad8f3d0001a847658f12337865abcc08fb452b833b82f411966bce335a1
7. 0x38831e07671a7ae4e9fcf388bd49425c695a3e2ebe4fd879839a49c677d565f1
8. 0x9c7cdc6c78763a8ba43a5008dbe8e7078234544c5855922b1f6cd7f192e71b21
9. 0x4a6e335ddc533fcc2624df247a47c8f07765a512d8321d7c754dea8dc1e37dbc
10. 0x20dbe8a978b71c865495b5eca97e15fce3a6b41f17facc85d1be13c3383515ec
11. 0x3689959f22248b99aac42058fcdd09cd65a6236ef340ba1b624c29d4313a37d4
12. 0x4add9ebe2bbf86a7a32e3cec38874af82baf38b21fde64a6952bf3d4124e2c7f
13. 0x9e70d944564843a0f0d88b623d628ff2e2ac17c172d4ebe0ed141fe8b9f9dae4
14. 0x42784d9809d120654630ee1b254a1dd90a2bbd3024aa180f1a59bbf53e9316e4
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4