Evidence row 277814

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://offercheck.offercheck.workers.dev/v1/check/url"
    ],
    [
      "x402",
      "https://offercheck.offercheck.workers.dev/v1/fx"
    ],
    [
      "x402",
      "https://offercheck.offercheck.workers.dev/v1/price"
    ],
    [
      "x402",
      "https://offercheck.offercheck.workers.dev/v1/read"
    ],
    [
      "x402",
      "https://offercheck.offercheck.workers.dev/v1/verify/offer"
    ]
  ],
  "name": "offercheck.offercheck.workers.dev",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "offercheck.offercheck.workers.dev",
    "endpoints": [
      {
        "description": "Check a URL before you cite, visit or trust it: liveness, final URL and redirect chain, soft-404 detection, page title, domain registration age (RDAP), robots.txt policy for AI agents, and Wayback Machine snapshot availability. $0.002 per check.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "https://example.com/docs/page",
            "group": "query",
            "name": "url",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "9",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "offercheck",
        "tags": [
          "verification",
          "ecommerce",
          "price",
          "availability",
          "url"
        ],
        "url": "https://offercheck.offercheck.workers.dev/v1/check/url"
      },
      {
        "description": "Convert between 30 major currencies (USD, EUR, GBP, JPY, CHF, CNY, INR, ILS, AUD, CAD, ...) using the European Central Bank's daily reference rates: rate and converted amount for one or many target currencies, optional historical date back to 1999. Returns the ECB rate date and source. $0.002 per call.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "100",
            "group": "query",
            "name": "amount",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "USD",
            "group": "query",
            "name": "from",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "EUR,GBP",
            "group": "query",
            "name": "to",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "11",
          "l30DaysUniquePayers": "7"
        },
        "serviceName": "offercheck",
        "tags": [
          "finance",
          "fx",
          "exchange-rate",
          "currency",
          "crypto"
        ],
        "url": "https://offercheck.offercheck.workers.dev/v1/fx"
      },
      {
        "description": "Current prices for cryptocurrencies and tokens by symbol (btc, eth, sol, usdc, ...), CoinGecko slug, or on-chain token address on Base, Ethereum, Arbitrum, Solana and 100+ chains, using DeFiLlama's aggregated DEX/CEX pricing with a per-asset confidence score. Quote in USD or any ECB fiat currency. Up to 25 assets per call. $0.002 per call.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "btc,eth,base:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "group": "query",
            "name": "ids",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "USD",
            "group": "query",
            "name": "vs",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "9",
          "l30DaysUniquePayers": "5"
        },
        "serviceName": "offercheck",
        "tags": [
          "finance",
          "fx",
          "exchange-rate",
          "currency",
          "crypto"
        ],
        "url": "https://offercheck.offercheck.workers.dev/v1/price"
      },
      {
        "description": "Read any public web page as clean Markdown: main-content extraction (navigation, footers, scripts and hidden elements removed), headings, lists, tables, code blocks, links (absolute, deduplicated), images, plus title, description, canonical URL, language, author and publish date, and a content hash + fetch time as evidence. JSON and plain-text URLs are returned as-is. No JavaScript rendering. $0.001 per page.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "https://example.com/blog/post",
            "group": "query",
            "name": "url",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.001",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "29",
          "l30DaysUniquePayers": "11"
        },
        "serviceName": "offercheck",
        "tags": [
          "web",
          "read",
          "markdown",
          "scrape",
          "extract"
        ],
        "url": "https://offercheck.offercheck.workers.dev/v1/read"
      },
      {
        "description": "Verify the live price and availability of a product at a URL before you buy or quote it. Fetches the page now, extracts price/currency/availability from JSON-LD, Shopify JSON, OpenGraph or microdata, and returns evidence (method, snippet, content hash, fetch time) plus a confidence score. $0.01 per check.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "https://shop.example.com/products/widget",
            "group": "query",
            "name": "url",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "8",
          "l30DaysUniquePayers": "4"
        },
        "serviceName": "offercheck",
        "tags": [
          "verification",
          "ecommerce",
          "price",
          "availability",
          "url"
        ],
        "url": "https://offercheck.offercheck.workers.dev/v1/verify/offer"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "offercheck-offercheck-workers-dev",
    "integrationType": "",
    "isNew": false,
    "name": "offercheck.offercheck.workers.dev",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.0034",
      "currency": "USDC",
      "maxAmount": "0.01",
      "minAmount": "0.001"
    },
    "provider": "offercheck.offercheck.workers.dev",
    "providerUrl": "",
    "serviceName": "offercheck",
    "tags": [
      "verification",
      "ecommerce",
      "price",
      "availability",
      "url",
      "finance",
      "fx",
      "exchange-rate",
      "currency",
      "crypto",
      "web",
      "read",
      "markdown",
      "scrape",
      "extract"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"7445ca4ba95f538a1407de428189c61977712f4923da579351de375d054fc03b","id":277814,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793042042718227,"prev":8913,"subject":"agentic_market:offercheck-offercheck-workers-dev","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. 0x258a909809101457df37bf516672930d1add6d38741400f578a3b0e2e79f1253
2. 0x00de1030b07fcd0116b173a9dadcfbbcd0438ea4fb399ff72b3419c3a8107c99
3. 0xcb30ff34b88aa50330f4bce7dc1db25c6fb67e47aeaf55526422af0e6aad3588
4. 0x003a2d828a092e8357e0f446c2ca233b7d89e5e7038d39ed842b3ed87b92cddc
5. 0xdc8c0c0d3b215f7d54dc6c9fb32962b8c1d091c6e6fd9e3ce5258664570818c4
6. 0x67a16a34e97f49d3480eae671c12ead6c91436e0f5e6e1e60dc19d90375a7a60
7. 0x3a3864627c280b90a075eecb4818f6c6147d66dcc161e0642d49928719b5e6bf
8. 0x2c0ce65eec21f53a8eba6426d179d05477395ce8e9179c9de6af29e5898ff321
9. 0xfa5014751daf7f8365b1bda3c47df415760b3d96f8cf81af85f038c77cc989e8
10. 0x8be58c5857bbc47fce7c17c05d9fabb43ce7fac0302eb1eceb39c699f199154d
11. 0xd59298b1ed461f406932ca0ca85948982d67f90463e31e5b2c45ab2a35eacd3f
12. 0x266d991b0a994042474d2789bd5d3ba2433a122ae3c1027e2ccd7c0f4cf63071
13. 0x830b2c874449c7499489eba2baa67d49f991298225763c0161b471621038d0fb
14. 0xd843afcced75dedd39194ff9bd12326b88099e6112686db2299392d022dc3146
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae