Evidence row 124270

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws/v1/gas"
    ]
  ],
  "name": "x402 Base Tools",
  "owner_address": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
        "scheme": "exact"
      }
    ],
    "description": "Current Base gas: base fee, priority fee percentiles over the last 10 blocks, the L1 data fee of a typical transaction, and what an ETH transfer, an ERC-20 transfer, a USDC transferWithAuthorization (an x402 payment), a swap and an NFT mint cost now in ETH and USD (ETH/USD from Chainlink).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "base_fee_gwei": 0.005,
              "block": "37000000",
              "costs": {
                "eth_transfer": {
                  "eth": 7e-7,
                  "gas": 21000,
                  "usd": 0.0017
                }
              },
              "eth_usd": 2356.9,
              "priority_fee_gwei": {
                "high": 0.01,
                "low": 0.0006,
                "medium": 0.002
              }
            },
            "type": "json"
          }
        },
        "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"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "base_fee_gwei": {},
                    "block": {},
                    "costs": {},
                    "eth_usd": {},
                    "priority_fee_gwei": {}
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T00:56:34.442Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T00:56:34.285Z"
    },
    "resource": "https://wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws/v1/gas",
    "serviceName": "x402 Base Tools",
    "tags": [
      "base",
      "gas",
      "fees",
      "onchain"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Current Base gas: base fee, priority fee percentiles over the last 10 blocks, the L1 data fee of a typical transaction, and what an ETH transfer, an ERC-20 transfer, a USDC transferWithAuthorization (an x402 payment), a swap and an NFT mint cost now in ETH and USD (ETH/USD from Chainlink)."
}

What the leaf hashes

{"body":"ef60e0bf851dce8d14142156b92e57e30d168679c686c1f672c7b5dcc344ba0e","id":124270,"kind":"listing","method":"baseline/1","observed_us":1793025624408744,"prev":null,"subject":"x402_bazaar:https://wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws/v1/gas","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x9c12e2685b07171f4533b82f171887dcf077ad936014d1959d47ebc3098638c3
2. 0x4b81961597c390b3a771b031272e6c66e6846fcf36bc6990243e12a9fa0d97d5
3. 0x84fba19ff29ef1d8277da91346bcf0e65d61bc0f4ce38de5e93dc39630eb5c40
4. 0x5d639080436e913702c4f275d06ca92d54eccb548516d64c871480c02db32a5b
5. 0x9e1512684723503978fc369d745dc2d9d70a23ac45ff60992caf343605f0edc8
6. 0x6299a18b3575cbdbff4382bdb7ea43e54e8857cda387568a585c2a27e85beb7f
7. 0xa9f3a38641a37a40ab1767e31429625d74502fc70460226eaa9ba13c6c6e6dbc
8. 0xb683b2c023faf72d4a816d59b6892f3ea1a0e3cf2fa8ee4435e8084493228556
9. 0xbfed5f7a44eb558747fbfdc20f94e1a7cff07de6cc68db75747fe31c4e150ec8
10. 0x5a1f256cf13b45bc022bfed6d7f60b9340951c3cdb79185c1910586f812c10f2
11. 0xb79ffe067e46a7abdcd59167d8556c652ce9f0f297fbf7808095f49485591c09
12. 0xd253212b3d5f7245423cc951067880bc2069b90eeee521363fcee13ebbd606ae
13. 0x99a4e0f8b23989f58b564c1b6e419578b4388f6e0dbf6e50177c1bd476302d0e
14. 0x6713795704ddd9c528d421fadd9cc96b0200a4ddbba84f88e718d4968dde888b
15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae