Evidence row 117910

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://pay.brianbooms.com/api/v1/data/fx"
    ]
  ],
  "name": "Steward",
  "owner_address": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
        "scheme": "exact"
      },
      {
        "amount": "12090",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
        "scheme": "exact"
      },
      {
        "amount": "12090",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
        "scheme": "exact"
      },
      {
        "amount": "12090",
        "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:43114",
        "payTo": "0xa98e8c6cbc64b7bb30fd0d2015ab24814c661839",
        "scheme": "exact"
      }
    ],
    "description": "Use when an agent needs a fiat currency conversion at current reference rates — pricing, payouts, or multi-currency accounting. Pass amount plus from/to currency codes. Use permitted: build it into your products and services, paid or free. Raw redistribution of the feed itself is prohibited.",
    "extensions": {
      "bazaar": {
        "discoverable": true,
        "iconUrl": "https://brianbooms.com/favicon.ico",
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "amount": "Amount to convert. Example: 100",
              "from": "3-letter code. Example: USD",
              "to": "3-letter code. Example: EUR"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "amount": 100,
              "from": "USD",
              "product": "FX conversion",
              "rate": 0.924,
              "result": 92.4,
              "to": "EUR"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": true,
          "properties": {
            "amount": {
              "description": "Amount to convert. Example: 100",
              "type": "string"
            },
            "from": {
              "description": "3-letter code. Example: USD",
              "type": "string"
            },
            "to": {
              "description": "3-letter code. Example: EUR",
              "type": "string"
            }
          },
          "type": "object"
        },
        "serviceName": "Steward",
        "tags": [
          "fx",
          "forex",
          "data-api",
          "steward",
          "x402"
        ]
      }
    },
    "lastUpdated": "2026-10-20T16:24:18.818Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-20T16:24:17.473Z"
    },
    "resource": "https://pay.brianbooms.com/api/v1/data/fx",
    "serviceName": "Steward",
    "tags": [
      "fx",
      "forex",
      "data-api",
      "steward",
      "x402"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Use when an agent needs a fiat currency conversion at current reference rates — pricing, payouts, or multi-currency accounting. Pass amount plus from/to currency codes. Use permitted: build it into your products and services, paid or free. Raw redistribution of the feed itself is prohibited."
}

What the leaf hashes

{"body":"9713c0c39d5e7fb6688708feeff0ba154baa0eda88885e23d55f6f11f0f30f0c","id":117910,"kind":"listing","method":"baseline/1","observed_us":1793025612041834,"prev":null,"subject":"x402_bazaar:https://pay.brianbooms.com/api/v1/data/fx","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. 0x99c4bd45aa9acac04545a85209d54f793ed1edcda759282fbf412e7be2b0a782
2. 0x77f3eba5d2006f5cf245945272d7768625269b2bae1d87aaed15ce5598cc10c1
3. 0x50e24b1df3ee9f7414ccf7400afd99c91b74ff51b74791ecd783e42ed1fb19c2
4. 0x8f0656ddf7488673448da9c3bc1a9033341f4bb50e40366d700099bc71d84db6
5. 0x9c4bf314de38c66383abf6a2bb772573c44182309ee51812b1acedd04a27e576
6. 0x63432715645a05ff20617df7d1484e286fb661bba5eb94476f5113a8da89c162
7. 0x5439a652f4101520db43c45855708603c8ed922b86c6551da7c1f3e9ec4914e7
8. 0xfc94a5edc99c53adf5c05289af83f6fee1bc8a38966afc3ce4a6b25fbafe546b
9. 0x0ee07e6cc060db401b72ca3aad3ddb8f20b92e617fa48be759c318386896a54d
10. 0x5f0ab04037f02b99972d6b76445e37cd5ba1ec6ac47f36a9b265411ab683344b
11. 0xee5ef8d84c329a24d375330252426182463aa2a536127b218e61007c87101323
12. 0xfee33ee0189dc82c649bd0324796a297b897507b2fddbbe2eff331c40c960ce2
13. 0x239fd39716710e7412bd120c373072b4c0d8b11bb9ee431dad62a2ce57b3d6f4
14. 0x49062da782c4f73855ddd5fdd51840749f928b5f17d1ce75ac50f2d829104e72
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae