Evidence row 1792130

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://unit.openverbs.com/v1/list"
    ]
  ],
  "name": "List units",
  "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": "List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "measure": "length"
            },
            "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": {
                    "measure": {
                      "description": "Restrict to one measure, one of length, area, mass, volume, each, temperature, time, digital, partsPer, speed, pace, pressure, current, voltage, power, reactivePower, apparentPower, energy, reactiveEnergy, volumeFlowRate, illuminance, frequency, angle.",
                      "enum": [
                        "length",
                        "area",
                        "mass",
                        "volume",
                        "each",
                        "temperature",
                        "time",
                        "digital",
                        "partsPer",
                        "speed",
                        "pace",
                        "pressure",
                        "current",
                        "voltage",
                        "power",
                        "reactivePower",
                        "apparentPower",
                        "energy",
                        "reactiveEnergy",
                        "volumeFlowRate",
                        "illuminance",
                        "frequency",
                        "angle"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [],
                  "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": "2026-10-08T05:37:20.223Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T05:37:19.952Z"
    },
    "resource": "https://unit.openverbs.com/v1/list",
    "serviceName": "List units",
    "tags": [
      "list supported units",
      "unit metadata lookup",
      "valid unit abbreviations",
      "measurement units api",
      "discover conversion units"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values."
}

What the leaf hashes

{"body":"d1e7e44ab2b9240c127a20fec6d62df28dd6a35432655ce7f60c510e2cdfb7eb","id":1792130,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793560008958505,"prev":123560,"subject":"x402_bazaar:https://unit.openverbs.com/v1/list","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x119df34f177c03fe3d8e86592b127eba75b5161d1cfee6ac27033efed6d374c2
2. 0x8338bc47cbc3ee50eb709b8542b00be8a9fadf6f5db7e5f11e403c4b01d2f1f7
3. 0x58458bf19e9ea9acba74667613b7a5101ed553a5f513dda4509791c5efc73d95
4. 0x0e76df6a7f5bf0f6335f5058009d2dac64d0c4841421a54e92939bf82a7350b3
5. 0x3b2b0b7a5f150370cff38c5d18dc08631abbffb912d84c2d16d092f03a9b54a1
6. 0xa0aa3247a36c75fa643917c5b6410bb828f64dbfa21fec8d305c3ef98ebf70c3
7. 0xe17a26152db786bc67671bdf666fd1b3a679b0396270dfa0eb6c0c2af40f2b50
8. 0x33e64a14c2a858060ac1e178cfc7e18c1696ff2457ce2963462ca0f2f3d85f13
9. 0x09a14e8b9d86c16ae539d763401ba592b3bb482a25b8f2d86a106858565d8f29
10. 0xef5c07aa3242e3b893d8119387a84e8ed63b260e35a0682ffea31d93384a43fe
11. 0x69ca5bb948032e891f5b01346edc6dfdedff73cf2ff521fe080dfcffd3164f6d
12. 0x2120c3201c20458c29fca57fb6de30c3d33101e8d02d08b2101bf2be12fcb11d
13. 0xf1747d321f72e3e44bd30dc10c794e13858576ce0204d89dd555f1effa06ee29
14. 0xb44b8d5019b9204aa2c2f558cdc381e6729b1aeca3e674741fa07287022b1f0f
15. 0xf1aed005f71411c0df252d9623f284bcac7de199e24c4d4cd5df3e8d3348d3aa
16. 0x5cf5a0a57795246f996e480f05ed085c19d02f7d6e8fc3ddc392412466554f0f
17. 0x02b3554752e71a19b12d7a76dbff436e85387226ceec89fdebdcdaf0122c2932
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90