Evidence row 77256

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://macaddress.openverbs.com/v1/to-eui64"
    ]
  ],
  "name": "MAC Addresses",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Derive the modified EUI-64 interface identifier from a 48-bit MAC (insert FFFE, flip the U/L bit) and the resulting IPv6 link-local address (fe80::/64).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "address": "00:1A:2B:3C:4D:5E"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "address": {
                      "description": "MAC address in colon, hyphen, dot or bare notation.",
                      "maxLength": 64,
                      "minLength": 1,
                      "type": "string"
                    }
                  },
                  "required": [
                    "address"
                  ],
                  "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"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:12:08.642Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:12:08.378Z"
    },
    "resource": "https://macaddress.openverbs.com/v1/to-eui64",
    "serviceName": "MAC Addresses",
    "tags": [
      "mac to eui64",
      "derive ipv6 interface id",
      "eui-48 to eui-64",
      "ipv6 link local from mac",
      "modified eui64 converter"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Derive the modified EUI-64 interface identifier from a 48-bit MAC (insert FFFE, flip the U/L bit) and the resulting IPv6 link-local address (fe80::/64)."
}

What the leaf hashes

{"body":"cdd9c56fd707ce3f0ba0d00db134054d43a4c31e90bc8bc0ff0e7d83980b38c8","id":77256,"kind":"listing","method":"baseline/1","observed_us":1793025493711034,"prev":null,"subject":"x402_bazaar:https://macaddress.openverbs.com/v1/to-eui64","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. 0x3c1b94c172c6355bd79e0c14d1b2553e0d4364eacb34cb425289c69c294ba0da
2. 0x9c916d3a7297a4bc853450a4b1585fb59910dd652f182e93ebf5319dcfb0093c
3. 0x29c1fcea00d28563def316934cd6a0c8c6c78b0dc830f1d651306a14de9b1d00
4. 0x40c42a30334a2f3d7b311d54caa089d79f017a13823c45fcab8e9a7cc108a504
5. 0x32ced21d1fc41eb84a708590933e529840c164d3922ea10a04ca42f670a2365b
6. 0x96ab2e79bff6080ef840a4711ead12bfe0777c39e0ff27460c24f7d3b9af4b6f
7. 0x08adb2985462dcc44afb7478691ee1e508fab806c7286a41e913657d473928ba
8. 0x0b4207724dccfcba1e5134e1590f8bf69846447ce8391530471168aee4fd5fb2
9. 0x4b4fa2acef7680870af370223689a6c26b72ab969f0456cd4e0b14e50395d4c4
10. 0x0c503c4524f0ed9ea5e3dd08b1e8fbfcbbce2a308fb2360a27a4ed64ec891f2c
11. 0x876d91ae08f3c341c1d9ba4ed92a9c937c054b5c7d6cd935bb21dda6fb029cac
12. 0xdb4b9388e3fe1df4b04e149e559f925fb354066ae1d2537fd6f918162716fadf
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae