Evidence row 451521

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://exchange.use.x402atlas.com/currency-exchange-rate"
    ]
  ],
  "name": "exchange.use.x402atlas.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:137",
      "eip155:42161",
      "eip155:8453",
      "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"
    ],
    "category": "",
    "description": "",
    "domain": "exchange.use.x402atlas.com",
    "endpoints": [
      {
        "description": "Get current exchange rate between two currencies using ECB data. Supports all major currencies. Returns rate, inverse rate, and date.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "USD",
            "group": "query",
            "name": "from",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "EUR",
            "group": "query",
            "name": "to",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "5",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "Currency Exchange Rate",
        "tags": [
          "currency",
          "exchange-rate",
          "forex",
          "fx",
          "ecb"
        ],
        "url": "https://exchange.use.x402atlas.com/currency-exchange-rate"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "exchange-use-x402atlas-com",
    "integrationType": "",
    "isNew": false,
    "name": "exchange.use.x402atlas.com",
    "networks": [
      "Base",
      "eip155:137",
      "eip155:42161",
      "solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.01",
      "currency": "USDC",
      "maxAmount": "0.01",
      "minAmount": "0.01"
    },
    "provider": "exchange.use.x402atlas.com",
    "providerUrl": "",
    "serviceName": "Currency Exchange Rate",
    "tags": [
      "currency",
      "exchange-rate",
      "forex",
      "fx",
      "ecb"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"50bdfc91bd925e97f38772456b2ced3f1b83109a624f2140080a642dc721fcfc","id":451521,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793100504367845,"prev":426026,"subject":"agentic_market:exchange-use-x402atlas-com","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x4bc90b42f53afcc752721c6224f33141e4dba2aa825f215888ef226d4eb5e82b
2. 0xe02de6415d2255280d8cd10c46d4c55ea55bff35211cb00efcda822c36652559
3. 0xe29a8485b24d8f6d04883cf4d48318ea42802c9db08c7b808185ce4529aa9c3b
4. 0xc619a6c42d56f40ed4e425045fec99149394c612df4454686e205565a3c46720
5. 0x9c31cbbe0018517f98adfeddc0203215139358c63c776a4634c48cd35bc3b55a
6. 0x48f9b8ce01c57dbe05a8ed83430788dbc01533f136a99ed933a026a62958f9d3
7. 0x0de0ce2ab0f9f5b853d60ef0bb9d75ff3f1fe263cb9465a6a27880443ddb4ba2
8. 0xbbc51c0c71fdfd2906d30ec179076a335dfc7478245a45ccb33f490faaaf77ae
9. 0x4cde6f0a82d51fa93b887c446d0b5dad4b690115ace2407a581b69e190cd2a42
10. 0xc5c8c1cab44dcac92464fe5056ed0cd782b104eaed78c431f44ecca1467a48a1
11. 0x5b15539a9e45c30d985cffa0f43853909d4e3a207bff9b6e3e35303e52a3c2d2
12. 0xf5ad7dee20c9ad48ff75cc443e6c6ae3a718321f07b826d581afdb243e59305f
13. 0x150dc531eedad3837a4be47dd0bf1a84bf98feb63216c125982425fda525a3fd
14. 0x80ede9e5d428e39db26928b1d08254ff1241f1d7e091fd2e57130fbb4423162b
15. 0x2c117b27721eea45f6590fbccb471d21a7b0b079a53f089ecb300c63bdb3aebf
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4