Evidence row 786159

Observed 28 Oct 2026, 18:15 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://x402-datashop-production.up.railway.app/v1/btc/fees
Recorded: 28 Oct 2026, 18:15 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: c26f9837d225112effcb29af64ffd2646e398506a915210b96144c71e5ba8acc
Leaf: 0x46a22c014cc5742f830d55fbc7996267c188457ec4280669db6b12d1a89253e6

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-datashop-production.up.railway.app/v1/btc/fees"
    ]
  ],
  "name": "eu-verify",
  "owner_address": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x6ab8efe305cce67daa48c97bde29c04402822dff",
        "scheme": "exact"
      }
    ],
    "description": "Recommended Bitcoin transaction fee rates in sat/vB (fastest, half-hour, hour, economy, minimum) from mempool.space, computed from the live mempool. Optional ?include=difficulty adds the current difficulty retarget estimate (change %, remaining blocks/time). No required params; served with a 60s cache.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "include": "difficulty"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "difficulty_adjustment": {
                "difficulty_change_percent": -2.74,
                "estimated_retarget_date_ms": 1753728000000,
                "progress_percent": 11.06,
                "remaining_blocks": 1793,
                "remaining_time_ms": 1093000000
              },
              "fees_sat_per_vb": {
                "economy": 1,
                "fastest": 2,
                "half_hour": 1,
                "hour": 1,
                "minimum": 1
              },
              "source": "mempool.space (live mempool snapshot)"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "include": {
                      "description": "Add difficulty retarget estimate (optional)",
                      "enum": [
                        "difficulty"
                      ],
                      "type": "string"
                    }
                  },
                  "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": "2026-10-28T10:06:51.839Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-28T10:06:51.633Z"
    },
    "resource": "https://x402-datashop-production.up.railway.app/v1/btc/fees",
    "serviceName": "eu-verify",
    "tags": [
      "bitcoin",
      "btc",
      "fees",
      "mempool",
      "onchain"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Recommended Bitcoin transaction fee rates in sat/vB (fastest, half-hour, hour, economy, minimum) from mempool.space, computed from the live mempool. Optional ?include=difficulty adds the current difficulty retarget estimate (change %, remaining blocks/time). No required params; served with a 60s cache."
}

What the leaf hashes

{"body":"c26f9837d225112effcb29af64ffd2646e398506a915210b96144c71e5ba8acc","id":786159,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793211328576750,"prev":null,"subject":"x402_bazaar:https://x402-datashop-production.up.railway.app/v1/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 2026-10-28 (231336 rows).
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Day root: 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
Chained: 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
Published: On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae

How to check it · This row as JSON