Evidence row 8913

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": "10",
          "l30DaysUniquePayers": "6"
        },
        "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":"983cd9064773781d5b73fbffd09b448618af12708e6f829f40be59759fd839c6","id":8913,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793025292738545,"prev":3046,"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. 0xc6227b4483ea3e69700eeebe04706d72e932aef65fd9b87e2ac7a22eb00abf4c
2. 0x5dffa7cb03bf77f976db95b4c1cf7a78c5d52cd84d342ced81cae7ecf0215b2d
3. 0xb3fc541f7c324c75ae02717c24be5dd9ecffbb69c7b93044f8598b9568612757
4. 0xec7f2ebfe4a10d129fbe339f36d4e64c442a87561914ead971bf9c9ff7567fd1
5. 0x860be8508060024d617a09902a1365a0469b5045eafeb54bdd3e4b23abc63f0a
6. 0xd24105c2c4318f7ac9ab5c7a6099ea19d8d1590f8731e00adbc9a0264e1c4093
7. 0x52d0c85d20da0a111d463539e1e4283e85517c9a7a435f4d7235ce7ad708aed2
8. 0x269e88cf6370ac82f752e8fbafc0cf70f3b41f343013ba9b425361136ae5685b
9. 0x4de4177ae63be0235d86453ffaf90a30e05acea386e5b20b282bf0f2216e4aae
10. 0x77833f2057f63ba21890736f404da58878f6b36427cb005b3298dae4d3753b74
11. 0xcf79908a8c2a5f4d274583b3f75e7aa2d8b29ffc384541425852fe761ae31d56
12. 0x9d99c5dad23613921cdfabc849c2dd3c97729992eaa05c4dab5e86e83ed6d220
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae