Evidence row 2201309

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://bitcoin-network.x402tookit.com/btc-mining-pools"
    ]
  ],
  "name": "Bitcoin Network",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Mining pool share of recent Bitcoin blocks with concentration (top-3 share, HHI) and the 51 percent check.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "window": "1w"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T05:14:44.368Z",
              "blocks": 1073,
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "hhi": 1620,
              "notChecked": [
                "hash power behind a pool (blocks found is a proxy and is noisy over short windows)",
                "unattributed blocks",
                "…1 more"
              ],
              "pools": [
                {
                  "blocks": 292,
                  "emptyBlocks": 0,
                  "pool": "Foundry USA",
                  "sharePct": 27.2
                },
                {
                  "blocks": 210,
                  "emptyBlocks": 1,
                  "pool": "AntPool",
                  "sharePct": 19.6
                }
              ],
              "reasons": [
                "No pool above a third.",
                "Pools are coordination points; individual miners can switch pools."
              ],
              "source": "mempool.space",
              "sourceUrl": "https://mempool.space",
              "summary": "1w: 1073 blocks from 16 pools; top pool Foundry USA 27.2%, top three 64% (HHI 1620).",
              "top1SharePct": 27.2,
              "top3SharePct": 64,
              "verdict": "DISTRIBUTED",
              "window": "1w"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "window": {
                      "description": "24h, 3d, 1w (default), 1m or 3m",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "blocks": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "hhi": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "pools": {
                      "items": {
                        "properties": {
                          "blocks": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "emptyBlocks": {
                            "type": [
                              "null",
                              "number"
                            ]
                          },
                          "pool": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "sharePct": {
                            "type": [
                              "null",
                              "number"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "sourceUrl": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "top1SharePct": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "top3SharePct": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "window": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T04:05:59.918Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T04:05:59.754Z"
    },
    "resource": "https://bitcoin-network.x402tookit.com/btc-mining-pools",
    "serviceName": "Bitcoin Network",
    "tags": [
      "bitcoin",
      "mining",
      "pools",
      "decentralization"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Mining pool share of recent Bitcoin blocks with concentration (top-3 share, HHI) and the 51 percent check."
}

What the leaf hashes

{"body":"33a66f9de329abe7a6ac8451b86df39db786e4f23d9a84326b4e55a0e7fdda95","id":2201309,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646803264675,"prev":null,"subject":"x402_bazaar:https://bitcoin-network.x402tookit.com/btc-mining-pools","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x97944b9f07805a65fc8bf0daeece7ef3a5d6983a9dc4a8dceea6242faeddd9fd
2. 0x76d9264768d06a4d31ebed57d15d312ce3490aae5db79891de61de79763b236a
3. 0x1a30a3327983a99416dec2ecf97e7a357bd0e0ff930a449e795285a37826dc78
4. 0xf18d0e4a74995e2d181e9e50cc4c5247040044f87798869c3adb01e43faf5456
5. 0x55f82e738a11cf1d11b1134a3f7d6b9b4074b66c8adceecad09d15a357f6dcaa
6. 0x72b223929603da09f74501d2b03864653bb956b9b77110890757028741d6339e
7. 0xc0de11d8d57284a5ba66779edae6be0e526dcfffdc2ba30491eb41d689559483
8. 0x71e822e2a6d7d4784b512f37dee5c1c9ac63676e482c5169340886751eda3521
9. 0x065a6a84adaee78a42d5b2ca5fd0d526ed66be41288a99bb183f91f08dac64c4
10. 0xea7325c2b7eafe81a84fcd10a3312383cfad4cfb4cf9a638866e4ce768f6375b
11. 0x962146faef816638fd3d22248461b5a38069af335a4949c571e21c2f49655125
12. 0xb4746c9c6a01a5463121fb30690562293e068b5358ab464ea070f4414595db5f
13. 0x161ab8dfe29d5443837514b3760b34879b8201d43912571c314e4142639b07a3
14. 0xc5de092f33d9a5a2d3076d47423feb11b0630cdc080163babf6390bb04568ce5
15. 0x9c91ecb84461aa4cb2a891252746755d862a88fe9bad822700cdb99eaab2edca
16. 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af