Evidence row 118421

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": "2026-10-23T22:45:27.716Z",
    "quality": {
      "l30DaysTotalCalls": 7,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-23T22:45:27.477Z"
    },
    "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":"c18dc9b70e081c633e346bb978addad931c000ec87a7c646bc2534e08bf80269","id":118421,"kind":"listing","method":"baseline/1","observed_us":1793025613016929,"prev":null,"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. 0x418b873e3ba8abf43fa57bd58189694b33563099b42b401aacf78e191f3c461e
2. 0xe3206b71422c15f26fb9506f9fdbc07cad8dfd3b2cbd3e9dd646aecaa4df83e6
3. 0xbe544538179187db286361bdfe16b7c2214afd491c11f7b9497c613b2041f1f4
4. 0xe7533eb847545e62f787f8dce8584e8589867abda24bd7de7e7cdc51750019a8
5. 0x08c4aee388eee474d7e9cccc09b12f2489373f4496c54478d3877287c40e789f
6. 0xf45b480d0d4a0a2dfdf4610950167e1c0c605e003055337984504f3b0e986298
7. 0x8bc6623af62b1c1a73c9ad5bd09b7c2de2fcb16d0b4a67de1a86c88c54754130
8. 0x997fd8e5918753195eb2a7baf4b1ba0d216b4b5a82c71dca8f17e8824bb333b5
9. 0x71dd45313484c769e1abadc01adf06b3ce7d999ae76f876972a3fdc32239d5ed
10. 0x5abcabf96a8e684fe6e262d534520acf62828f31c0a7a0f29ffa7346f72de9b1
11. 0x475d2fbee38b77be440946f3f083a3953187376db2f7f57a3a3db41905aa12b6
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