Block Book (legacy)

BlockBook (legacy) operations.

Legacy get block hash by height.

get

Bitcore Insight-compatible V1 route for Bitcoin-type coins.

Load estimate: Low; indexed height-to-hash lookup.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Path parameters

heightintegerRequired

Block height on the backend main chain.

Example: 860730

Responses

200

Block hash at the requested height.

application/json

Object containing schema details.

blockHashstringRequired

Block hash.

Example: 0000000000000000000b7b8574bc6fd285825ec2dbcbeca149121fc05b0c828c

400

Bad Request

application/json

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

503

Service Unavailable

application/json

default

Public API error.

application/json

get/api/v1/block-index/{height}

GET /api/v1/block-index/{height} HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Accept: */*

{
  "blockHash": "0000000000000000000b7b8574bc6fd285825ec2dbcbeca149121fc05b0c828c"
}

Legacy get transaction.

get

Bitcore Insight-compatible V1 transaction shape for Bitcoin-type coins.

Load estimate: Medium; grows with inputs, outputs, scripts, and raw transaction size.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Path parameters

txidstringRequired

Transaction id/hash.

Example: 8c1e3dec662d1f2a5e322ccef5eca263f98eb16723c6f990be0c88c1db113fb1

Responses

200

Legacy transaction payload.

application/json

Legacy Bitcore Insight-compatible payload.

Other propertiesanyOptional

400

Bad Request

application/json

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

503

Service Unavailable

application/json

default

Public API error.

application/json

get/api/v1/tx/{txid}

GET /api/v1/tx/{txid} HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Accept: */*

{}

Legacy get address.

get

Bitcore Insight-compatible V1 address shape for Bitcoin-type coins.

Load estimate: Variable; grows with address transaction count and legacy response expansion.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Path parameters

addressstringRequired

Chain address.

Example: tb1qwntjdqmxlvt5uay6s06mjmwmsjmx6xkercxzp4

Responses

200

Legacy address payload.

application/json

Legacy Bitcore Insight-compatible payload.

Other propertiesanyOptional

400

Bad Request

application/json

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

503

Service Unavailable

application/json

default

Public API error.

application/json

get/api/v1/address/{address}

GET /api/v1/address/{address} HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Accept: */*

{}

Legacy get address UTXOs.

get

Bitcore Insight-compatible V1 UTXO list for Bitcoin-type coins.

Load estimate: Medium; grows with the number of unspent outputs.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Path parameters

addressstringRequired

Chain address.

Example: tb1qwntjdqmxlvt5uay6s06mjmwmsjmx6xkercxzp4

Responses

200

Legacy UTXO list.

application/json

Legacy UTXO list.

Other propertiesanyOptional

400

Bad Request

application/json

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

503

Service Unavailable

application/json

default

Public API error.

application/json

get/api/v1/utxo/{address}

GET /api/v1/utxo/{address} HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Accept: */*

[
  {}
]

Legacy get block by height or hash.

get

Bitcore Insight-compatible V1 block shape for Bitcoin-type coins.

Load estimate: Medium to high; grows with block transaction count and legacy payload size.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Path parameters

blockIdstringRequired

Block height or block hash.

Example: 760f8ed32894ccce9c1ea11c8a019cadaa82bcb434b25c30102dd7e43f326217

Responses

200

Legacy block payload.

application/json

Legacy block object.

Other propertiesanyOptional

400

Bad Request

application/json

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

503

Service Unavailable

application/json

default

Public API error.

application/json

get/api/v1/block/{blockId}

GET /api/v1/block/{blockId} HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Accept: */*

{}

Legacy estimate fee target.

get

Bitcore Insight-compatible V1 fee estimate for Bitcoin-type coins.

Load estimate: Low; a small backend fee estimate lookup.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Path parameters

blocksinteger · min: 1Required

Confirmation target in blocks.

Example: 2

Responses

200

Decimal fee estimate in chain base currency.

application/json

Object containing schema details.

resultstringRequired

Fee estimate string.

Example: 0.00002460

400

Bad Request

application/json

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

503

Service Unavailable

application/json

default

Public API error.

application/json

get/api/v1/estimatefee/{blocks}

GET /api/v1/estimatefee/{blocks} HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Accept: */*

{
  "result": "0.00002460"
}

Legacy broadcast transaction using the path.

get

Bitcore Insight-compatible V1 broadcast route for Bitcoin-type coins.

Load estimate: High; validates and forwards to the backend, with cost growing with transaction size and backend mempool policy checks.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Path parameters

hexstringRequired

Raw transaction.

Example: 02000000000101662a...Pattern: ^[0-9a-fA-F]+$

Responses

200

Broadcast result.

application/json

Object containing schema details.

resultstringRequired

Transaction id.

Example: 7c3be24063f268aaa1ed81b64776798f56088757641a34fb156c4f51ed2e9d25

400

Bad Request

application/json

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

503

Service Unavailable

application/json

default

Public API error.

application/json

get/api/v1/sendtx/{hex}

GET /api/v1/sendtx/{hex} HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Accept: */*

{
  "result": "7c3be24063f268aaa1ed81b64776798f56088757641a34fb156c4f51ed2e9d25"
}

Legacy broadcast transaction using the request body.

post

Bitcore Insight-compatible V1 broadcast route for Bitcoin-type coins.

Load estimate: High; validates and forwards to the backend, with cost growing with transaction size and backend mempool policy checks.

Authorizations

api-keystringRequired

NOWNodes API key passed in the api-key header.

Body

stringOptional

Alternative schema variant for this parameter or payload.

Example: 0x00Pattern: ^[0-9a-fA-F]+$

Responses

200

Broadcast result.

application/json

Object containing schema details.

resultstringRequired

Transaction id.

Example: 7c3be24063f268aaa1ed81b64776798f56088757641a34fb156c4f51ed2e9d25

401

Unauthorized: API key is present but rejected by the NOWNodes gateway.

text/plain

405

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

text/plain

422

Missing API key. The NOWNodes gateway returns plain text for this error.

text/plain

500

Internal Server Error

application/json

default

Public API error.

application/json

post/api/v1/sendtx/

POST /api/v1/sendtx/ HTTP/1.1
Host: btcbook-testnet.nownodes.io
api-key: YOUR_API_KEY
Content-Type: text/plain
Accept: */*
Content-Length: 6

"0x00"

{
  "result": "7c3be24063f268aaa1ed81b64776798f56088757641a34fb156c4f51ed2e9d25"
}

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Last updated 25 days ago