Evidence row 1532331

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://minty-sprout.onrender.com/v1/base-gas"
    ]
  ],
  "name": "Foundry",
  "owner_address": "0x11dced0487ca3e7d9032029dcb302253ccf4e0de",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x11DCED0487cA3E7d9032029DCb302253ccF4e0DE",
        "scheme": "exact"
      }
    ],
    "description": "Current Base mainnet gas: latest block, base fee and priority fee in gwei, a suggested max fee, and the ETH cost of a typical USDC transfer. Input: any text, e.g. 'base'. Deterministic, no LLM.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "input": "base"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "base_fee_gwei": 0.005,
              "block": 53341001,
              "network": "eip155:8453",
              "priority_fee_gwei": 0.001,
              "suggested_max_fee_gwei": 0.011,
              "timestamp": 1793471349,
              "usdc_transfer_cost_eth": 3.9e-7
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "input": {
                      "maxLength": 8000,
                      "type": "string"
                    }
                  },
                  "required": [
                    "input"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "base_fee_gwei": {
                      "type": "number"
                    },
                    "priority_fee_gwei": {
                      "type": "number"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-31T18:48:37.654Z",
    "quality": {
      "lastCalledAt": "2026-10-31T18:48:37.654Z"
    },
    "resource": "https://minty-sprout.onrender.com/v1/base-gas",
    "serviceName": "Foundry",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current Base mainnet gas: latest block, base fee and priority fee in gwei, a suggested max fee, and the ETH cost of a typical USDC transfer. Input: any text, e.g. 'base'. Deterministic, no LLM."
}

What the leaf hashes

{"body":"ab88b67f57bb6837bf47d085a838341d88d4522c6f14044868a3194b0c837220","id":1532331,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793473476291916,"prev":null,"subject":"x402_bazaar:https://minty-sprout.onrender.com/v1/base-gas","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0x4ebbe9c1bf287822af36e5b655fdb0f53acc6559f3fe0bf23e17f6256c727050
2. 0x6d4e6c3ec90ec74545e56fa7cb8f936abdda7119fcb2229e141e50963caefd72
3. 0x6c4f37aacf16b8dd2046eb79c0756de36ee34ae224241f5158d506fa4ab881c7
4. 0xc251bb4100c571687303f4d07be157585dbe8de98f0840060ddf0bedb6dc72a4
5. 0xa5e51d5338965b0cf37028fda949e69b963b6e82517ce4ec46db39add6f15fb1
6. 0x3f6c00119ca0d996877a5a11cad5ba27c53becc6ad906ece498b29de68f1667e
7. 0x3ae013cd294e258baafc7fb64d97d462cb402c1e7d7b9ae1f824a0e2ad8a0256
8. 0xa7f2af2c42b24c12bd548312afd131c6e98ccf1396537cf7ca673b3d9a348604
9. 0x46a9cb52f6cf7e1713252a98a7fb3db20b2500b731b45020a3ca3aba2d23c972
10. 0x8397ee7040f1b32aec250553c413568ecaf2dd1947afc71907391bed5f478afe
11. 0x3a88088fcd179b7a35347105d76d829dfe47cc77159a4a03fbb72bfea9c7bb27
12. 0x8346ae9b76ea078d18c864debbba102f364e842abbb6c07088f229c84b60d909
13. 0x3b31ad2e230b4adddfd3db6e960243f893810b5bd12d29f0e9a17684e7acb3b6
14. 0xa61ca0b664c5ff2f545d3f92e3125f2b38c2b4e58fd9a71badfd8a85dda4c936
15. 0x37f0ccf90cd9ba8759ef0154382593820880794592760020f095a3628e43fc3f
16. 0xad4540f06e3fdfe46524d8592f8d854d4849e16217bc047eaf024f0abebe34b0
17. 0xa00a931d72706fa2402bfc9b441a12eb7c6a61ff42a542916106e3637177f101
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0