Evidence row 456371

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.x402node.dev/chain/btc-fees"
    ]
  ],
  "name": "api.x402node.dev/chain/btc-fees",
  "owner_address": "0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125e",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e",
        "scheme": "exact"
      },
      {
        "amount": "5000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up",
        "scheme": "exact"
      }
    ],
    "description": "Bitcoin recommended fee rates (sat/vB) for fast/half-hour/hour/economy/minimum via mempool.space. Use no params. Built for AI agents constructing BTC transactions, fee estimation UIs. Accepts payment on Base or Solana — either network works.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T10:04:27.634Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-26T05:52:16.752Z"
    },
    "resource": "https://api.x402node.dev/chain/btc-fees",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Bitcoin recommended fee rates (sat/vB) for fast/half-hour/hour/economy/minimum via mempool.space. Use no params. Built for AI agents constructing BTC transactions, fee estimation UIs. Accepts payment on Base or Solana — either network works."
}

What the leaf hashes

{"body":"95018a601ccadb4ea7c9271e40bd25f450ac3e27580d84788d8f107dd9c96b68","id":456371,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100953659177,"prev":218705,"subject":"x402_bazaar:https://api.x402node.dev/chain/btc-fees","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. 0xef658f4df80ce1d31edf29bb97025c18bc74d840ad96c1cfe92fba1e36f8122f
2. 0xc39e41db8e0e00e8018b0cac6f2bc4230de4969c4153f30a9426ad1310065766
3. 0x7cc296b41d28613058cb407313a586999723347a6bc68991c33af7ea831807fe
4. 0x4877df9f48fcc0fdb73ad32ec2c1aefaa50965a20caee62e9a320ad682b0d39f
5. 0x5beec3eade8076b2f1b5abe34b5fa30e4366bf89001b33dd0a6459ed46677bcd
6. 0xdb0d920f26390b32f496d4d5d25436f96971ec7c948eb8a4cd8636b5df04058a
7. 0xf2f901d07f72703718f95b11c760d855460e5e86ca38b7ae2c5831450278d331
8. 0xc480e77bed9a492d146c23e72ecfe954d0ae1ad973a3d9b550a2b281cd5e5202
9. 0x930b1fcfbe4599560c2ba785ea038c4ecb71dbfac328de203327705d7df6ca65
10. 0xa2f7ee67cd3d18eb6a574f673a6de5baa7d1c805f36fc95b0d45b03af8e8f907
11. 0x1b4399bae757271424da8a4da03b907adf56af6574a865598cf68ad834ce7e01
12. 0xc0448a83784154aec794ac7a249e46b6f618529dfd246ef492240c5d9b62d921
13. 0xe0ddf3e1c8349b7fe55d4b2a6864486a77de3e3c0e371df44d69aeb837cfd79c
14. 0xce1471491ffb52101d7cd9884cca0fb37a9496f6e8250375054907d24a35d04f
15. 0x56f7109d4cde42492651beb1237c13cdcbf95e6fee2b2482391a2388e04c4629
16. 0x8745bd887f5ce9f7a49558fd2b04cdcd97a05ea9f8a23f62d0e80cb13d328b0f
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4