Saylor Innovations Agent Bazaar by Saylor Innovations
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mirrored listing x402 eip155:8453eip155:137eip155:42161eip155:480solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpalgorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=stellar:pubnet

Deep per-block Bitcoin extract

Deep per-block Bitcoin extract. Returns miner-pool attribution, witness/taproot adoption %, Ordinals inscription count, OP_RETURN byte volume, fee percentiles (10/25/50/75/90), UTXO delta, segwit %, total output BTC, block weight.

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20000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-09
updated

Provider

api.carbon-cashmere.de · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "20000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "20000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:480",
    "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
    "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
    "amount": "20000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "GgS891nMiEETjBEFw1QQxVcAqsRV34mDYpxh24TrpCiD",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "20000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
    "payTo": "5GRGZVUNRF2S4BY2TNRBCUCKUOT3H6BP56ACPCZVGR3ISTTRRSSB2RGJGI",
    "asset": "31566704",
    "amount": "20000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "stellar:pubnet",
    "payTo": "GDYFWCUFLG7MZAITOOVITYDNCLVJXWJ7OASYJAJPPOTONUQRNBCRO2VP",
    "asset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN",
    "amount": "200000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "method": "GET",
        "pathParams": {
          "height": "950000"
        },
        "type": "http"
      },
      "output": {
        "example": {},
        "type": "json"
      }
    },
    "routeTemplate": "/v1/btc-derivatives/blocks/:height",
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object"
            },
            "queryParams": {
              "properties": {},
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  },
  "eip2612GasSponsoring": {
    "info": {
      "description": "The facilitator accepts EIP-2612 gasless Permit to Permit2 canonical contract.",
      "version": "1"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "amount": {
          "description": "The amount to approve (uint256).",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "asset": {
          "description": "The address of the ERC-20 token contract.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "deadline": {
          "description": "The timestamp at which the signature expires.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "from": {
          "description": "The address of the sender.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "nonce": {
          "description": "The current EIP-2612 nonce of the sender.",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "signature": {
          "description": "The 65-byte concatenated signature (r, s, v) as a hex string.",
          "pattern": "^0x[a-fA-F0-9]+$",
          "type": "string"
        },
        "spender": {
          "description": "The address of the spender (Canonical Permit2).",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "version": {
          "description": "Schema version identifier.",
          "pattern": "^[0-9]+(\\.[0-9]+)*$",
          "type": "string"
        }
      },
      "required": [
        "from",
        "asset",
        "spender",
        "amount",
        "nonce",
        "deadline",
        "signature",
        "version"
      ],
      "type": "object"
    }
  },
  "erc20ApprovalGasSponsoring": {
    "info": {
      "description": "The facilitator accepts a raw signed approval transaction and will sponsor the gas fees.",
      "version": "1"
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "amount": {
          "description": "Approval amount (uint256).",
          "pattern": "^[0-9]+$",
          "type": "string"
        },
        "asset": {
          "description": "The ERC-20 token contract address to approve.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "from": {
          "description": "The address of the sender.",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "signedTransaction": {
          "description": "RLP-encoded signed transaction calling ERC20.approve().",
          "pattern": "^0x[a-fA-F0-9]+$",
          "type": "string"
        },
        "spender": {
          "description": "The address of the spender (Canonical Permit2).",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "type": "string"
        },
        "version": {
          "description": "Schema version identifier.",
          "pattern": "^[0-9]+(\\.[0-9]+)*$",
          "type": "string"
        }
      },
      "required": [
        "from",
        "asset",
        "spender",
        "amount",
        "signedTransaction",
        "version"
      ],
      "type": "object"
    }
  },
  "offer-receipt": {
    "info": {
      "offers": [
        {
          "acceptIndex": 0,
          "format": "eip712",
          "payload": {
            "amount": "20000",
            "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
            "network": "eip155:8453",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/950000",
            "scheme": "exact",
            "validUntil": 1788946239,
            "version": 1
          },
          "signature": "0x20c4abc65bc5a960036bcb05c76f3557962dfa89a8f16fd1e907d8c31207c45272a451d4a904933e0934009a668cfb314dd7d531ba65ad855db973b28deb02d11c"
        },
        {
          "acceptIndex": 1,
          "format": "eip712",
          "payload": {
            "amount": "20000",
            "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
            "network": "eip155:137",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/950000",
            "scheme": "exact",
            "validUntil": 1788946239,
            "version": 1
          },
          "signature": "0xfd221e05bf8a177d123a4d07d2e2c184e34887f4ab3a0e4cc074b47af82b1d3c0d25755dcd069e3b91477b4ae9b82bb67b5aba66992a0828b4d3943a92fea2a51b"
        },
        {
          "acceptIndex": 2,
          "format": "eip712",
          "payload": {
            "amount": "20000",
            "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
            "network": "eip155:42161",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/950000",
            "scheme": "exact",
            "validUntil": 1788946239,
            "version": 1
          },
          "signature": "0x8755603343cd46d8e34d8263a95081894a34e2577aebde17b51f7d55199046c15b50a64d6386391a8114a3cdb3803302cb169fc8d58a40a4774fee1aa3da68231b"
        },
        {
          "acceptIndex": 3,
          "format": "eip712",
          "payload": {
            "amount": "20000",
            "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
            "network": "eip155:480",
            "payTo": "0xf8b2dD46542175AD46e14e6133340E652665F2Ee",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/950000",
            "scheme": "exact",
            "validUntil": 1788946239,
            "version": 1
          },
          "signature": "0xbbc044c6d0bdad1f08d971803648bc3b0aff8afbc16cb315bb96816656d9c3b34c73f889775b36b6ef6ca6ad35dd541ef347104d3544c40527bb97cce498690d1b"
        },
        {
          "acceptIndex": 4,
          "format": "eip712",
          "payload": {
            "amount": "20000",
            "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
            "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
            "payTo": "GgS891nMiEETjBEFw1QQxVcAqsRV34mDYpxh24TrpCiD",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/950000",
            "scheme": "exact",
            "validUntil": 1788946239,
            "version": 1
          },
          "signature": "0x4144c4735a4de69731b62bc2d0651454455db6dc3703fc4d201614ad1e566a4d6737a7a79b3926e19f39ab61a3b7d2fd69c62edce9de365bb8be4d9969b418fe1c"
        },
        {
          "acceptIndex": 5,
          "format": "eip712",
          "payload": {
            "amount": "20000",
            "asset": "31566704",
            "network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
            "payTo": "5GRGZVUNRF2S4BY2TNRBCUCKUOT3H6BP56ACPCZVGR3ISTTRRSSB2RGJGI",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/950000",
            "scheme": "exact",
            "validUntil": 1788946239,
            "version": 1
          },
          "signature": "0x60b224bbf332f0067383fb013ce97273344206f121a5a4572061f7a236fdd5ce0aa49d846852909b40ac3d1578a34b9711b0db4bf260417a09cf201dd5f7c4061c"
        },
        {
          "acceptIndex": 6,
          "format": "eip712",
          "payload": {
            "amount": "200000",
            "asset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN",
            "network": "stellar:pubnet",
            "payTo": "GDYFWCUFLG7MZAITOOVITYDNCLVJXWJ7OASYJAJPPOTONUQRNBCRO2VP",
            "resourceUrl": "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/950000",
            "scheme": "exact",
            "validUntil": 1788946239,
            "version": 1
          },
          "signature": "0x68d3e10a374f356b460fa75d87a66006ed6b84bbf1675aac336beddc786c3e265b5a3e9fe7e7580ba20a5487d51399b23d9c3d11f02de2a00044ef5effd731631c"
        }
      ]
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "format": {
          "enum": [
            "eip712",
            "jws"
          ],
          "type": "string"
        },
        "payload": {
          "type": "object"
        },
        "signature": {
          "type": "string"
        }
      },
      "required": [
        "format",
        "payload",
        "signature"
      ],
      "type": "object"
    }
  },
  "payment-identifier": {
    "info": {
      "required": false
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "id": {
          "maxLength": 128,
          "minLength": 16,
          "pattern": "^[a-zA-Z0-9_-]+$",
          "type": "string"
        },
        "required": {
          "type": "boolean"
        }
      },
      "required": [
        "required"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/12572.json, and this resource appears in /discovery/resources and /discovery/search.