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Advanced Wallets - Accelerate Transaction

post/api/v1/{coin}/advancedwallet/{walletId}/accelerate

Send a new transaction to accelerate the targeted unconfirmed transaction either by using Child-Pays-For-Parent (CPFP) or Replace-By-Fee (RBF).

Retrieves the private key from KMS using the provided public key, then signs and broadcasts the transaction.

Use this endpoint only with advanced wallets. For other wallet types, use Accelerate Transaction.

Path Parameters

  • walletIdstringRequired
  • coinstringRequired

Request Body

pubkey string required
Public key used for signing the acceleration transaction.
Example: xpub661MyMwAqRbcGCNnmzqt3u5KhxmXBHiC78cwAyUMaKJXpFDfHpJwNap6qpG1Kz2SPexKXy3akhPQz7GDYWpHNWkLxRLj6bDxQSf74aTAP9y
source string required
The key to use for signing the transaction.
Allowed values: user backup
Example: user
cpfpTxIds array[string]
Transaction IDs to accelerate using Child-Pays-For-Parent (CPFP). CPFP creates a new transaction that spends an output from the original transaction.
Example: ["abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234"]
cpfpFeeRate number
Fee rate in satoshis per byte for the CPFP transaction. Higher fee rates result in faster confirmations but higher transaction costs.
Example: null
maxFee number
Maximum fee in satoshis for the acceleration transaction. Helps prevent overpaying for transaction acceleration.
Example: null
rbfTxIds array[string]
Transaction IDs to accelerate using Replace-By-Fee (RBF). RBF creates a new transaction that replaces the original transaction. The original transaction must have been created with RBF enabled.
Example: ["abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234"]
feeMultiplier number
Fee multiplier for RBF transactions. The new fee will be the original fee multiplied by this value.
Example: null

200 Response

txid string required
The transaction ID (hash) of the acceleration transaction. This can be used to track the transaction on a block explorer.
Example: abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234abcd1234
tx string required
The full signed transaction in hexadecimal format. This transaction can be broadcast to the network.
Example: 01000000000101edd7a5d948a6c79f273ce686a6a8f2e96ed8c2583b5e77b866aa2a1b3426fbed0100000000ffffffff02102700000000000017a914192f23283c2a9e6c5d11562db0eb5d4eb47f460287b9bc2c000000000017a9145c139b242ab3701f321d2399d3a11b028b3b361e870247304402206ac9477fece38d96688c6c3719cb27396c0563ead0567457e7e884b406b6da8802201992d1cfa1b55a67ce8acb482e9957812487d2555f5f54fb0286ecd3095d78e4012103c92564575197c4d6e3d9792280e7548b3ba52a432101c62de2186c4e2fa7fc580000000000

400 Response

error string required
The error name
details string required
Error details

404 Response

error string required
The error name
details string required
Error details

409 Response

error string required
The error name
details string required
Error details

422 Response

error string required
The error name
details string required
Error details

500 Response

error string required
The error name
details string required
Error details

501 Response

error string required
The error name
details string required
Error details