{
  "generated_at": "2026-04-24T15:01:35.625676+00:00",
  "slug": "hash-jack-x402-onrender-com-guess",
  "title": "Hash Jack \u00b7 Predict BTC Hash Last 3 Hex Digits",
  "url": "https://hash-jack-x402.onrender.com/guess",
  "category": "data",
  "summary": "Submit a 3-character hex guess and check if you predicted the last 3 digits of the next Bitcoin block hash.",
  "seo": {
    "title": "Hash Jack x402 API: BTC Hash Prediction Game",
    "description": "Pay 1 USDC to guess the last 3 hex digits of the next Bitcoin block hash. On-chain gambling game via x402 protocol on Base."
  },
  "use_cases": [
    "Place bets on Bitcoin block hash outcomes",
    "Build provably fair gambling interfaces",
    "Integrate on-chain prediction markets"
  ],
  "ideal_buyer": "Gambling dApp developers and crypto-native betting agents seeking provably fair on-chain games.",
  "example_prompt": "I want to bet on the next Bitcoin block hash ending in 'a3f'. Check if I win.",
  "example_request_body": {
    "guess": "a3f"
  },
  "risk_notes": [],
  "pricing_sanity": {
    "flag": "expensive_outlier",
    "ratio": 33.333,
    "median_category_atomic": 30000
  },
  "pricing_review_required": false,
  "pricing_decimal_suspect": false,
  "trust_tier": "indexed_external",
  "accepts": [
    {
      "scheme": "exact",
      "network": "base",
      "pay_to": "0xa858c8aa8c545d62551f0082407ca2cffad42ab0",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "max_amount_required_atomic": "1000000",
      "max_timeout_seconds": 60,
      "verified": false,
      "hints": {
        "input": {
          "type": "http",
          "method": "GET"
        },
        "output": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "guess": {
                "type": "string",
                "required": true,
                "maxLength": 3,
                "minLength": 3,
                "description": "3 caract\u00e8res hexad\u00e9cimaux (ex: abc) pour pr\u00e9dire les 3 derniers du hash BTC"
              }
            }
          },
          "output": {
            "type": "object",
            "properties": {
              "message": {
                "type": "string"
              },
              "success": {
                "type": "boolean"
              },
              "roundHeight": {
                "type": "number"
              }
            }
          }
        }
      }
    }
  ],
  "origin": {
    "slug": "hash-jack-x402-onrender-com",
    "host": "hash-jack-x402.onrender.com",
    "url": "https://hash-jack-x402.onrender.com"
  },
  "json_ld": {
    "@id": "https://x402all.com/resource/hash-jack-x402-onrender-com-guess",
    "url": "https://x402all.com/resource/hash-jack-x402-onrender-com-guess",
    "name": "Hash Jack \u00b7 Predict BTC Hash Last 3 Hex Digits",
    "@type": "WebAPI",
    "offers": {
      "url": "https://x402all.com/resource/hash-jack-x402-onrender-com-guess",
      "@type": "Offer",
      "price": "1",
      "availability": "https://schema.org/InStock",
      "priceCurrency": "USDC",
      "priceSpecification": {
        "@type": "UnitPriceSpecification",
        "price": "1.000000",
        "unitText": "call",
        "priceCurrency": "USDC"
      },
      "eligibleCustomerType": "Agent",
      "additionalProperty": [
        {
          "@type": "PropertyValue",
          "name": "paymentNetwork",
          "value": "base"
        },
        {
          "@type": "PropertyValue",
          "name": "paymentAsset",
          "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        }
      ]
    },
    "sameAs": "https://hash-jack-x402.onrender.com/guess",
    "@context": "https://schema.org",
    "provider": {
      "@id": "https://x402all.com/server/hash-jack-x402-onrender-com",
      "url": "https://hash-jack-x402.onrender.com",
      "name": "hash-jack-x402.onrender.com",
      "@type": "Organization"
    },
    "identifier": "hash-jack-x402-onrender-com-guess",
    "description": "Pay 1 USDC to guess the last 3 hex digits of the next Bitcoin block hash. On-chain gambling game via x402 protocol on Base.",
    "potentialAction": {
      "@type": "BuyAction",
      "target": "https://axon402.com/test-buy?resource=hash-jack-x402-onrender-com-guess",
      "description": "Test-buy this endpoint on AXON"
    },
    "applicationCategory": "data"
  },
  "axon_deep_link": "https://axon402.com/test-buy?resource=hash-jack-x402-onrender-com-guess"
}