Evidence row 236559

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": 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":"fcd553ba4dfaa5bef0ac65ce16f22c0ee82ff8106adaac7738d08689d37fd8e6","id":236559,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793028847788009,"prev":118421,"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. 0xd4fc1f0c0289347ef5a289e18d3b1cc93dd88fc0ce53209a0ef1416914623f1f
2. 0xfc551622d66df6b825aee0d1d021a6b4091b16e9aae179b52bc863d823737c17
3. 0xc4a9d556cd64c234adada35d146383596057946c895eefa090939a0e096ebc71
4. 0xb6d4b4113ca88e102f4b23d4a378d114742ceb7b018493722fabf8a7dd47b276
5. 0x7e80bb227e70f6a8c0034c780af37917501d9d75d4e75a02f813e567ac6c93d4
6. 0x26e819ac696a94cd0b8df75da74dcc2c298d872559579a5987f1599de0e9de3c
7. 0x652f173e02d750402411d50b2d861a27f90a6f5cc00d4701c5c18e8f3409cbe3
8. 0x3f7eebcd82f7b1196cb9ad77b058bc6456a2ac81d63612ace4315eaa67d22812
9. 0xd574190c8f34f0f722f5ae9a12e7d965573611bd86afd47858cff27cb0537b74
10. 0x692eeb197968cd5781b6a621b2983348b30fee6c6aea503398abf2207d9af77b
11. 0x13af2618b202e3256bff92107d30a646eb897d2992ea1f3e08e75bf4bef84c31
12. 0x7026808261896a203198354548e5e8cabce4a06e89d077c172084841b47ae119
13. 0x3199db04c2c73c3483386a86bf503eafde5af103465608156e2e5f42e72a6fbe
14. 0x6b927d53caa5125cdba9255612d524976c691f8672796c3f0885ba2c5b3af1ad
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae