ConsolidateSmallUTXOs consolidate small utxos Parameters: utxos - all unspent utxos networkFee - network fee threshold - threshold for small utxos maxVin - maximum vin count trigerNum - minimum small utxo Returns: selectedUtxos - selected utxos for consolidation totalAmount - total amount of selected utxos finalAmount - final amount after consolidation, after deducting the network fee error - error if any.

ConsolidateUTXOsByCount consolidate utxos by count.

CreateRawTransaction create raw transaction Parameters: utxos - all unspent utxos withdrawals - all withdrawals changeAddress - change address changeAmount - change amount net - bitcoin network Returns: tx - raw transaction dustWithdraw - value lower than dust limit withdraw id error - error if any.

GenerateRawMeessageToFireblocks generate the raw message to fireblocks.

SelectOptimalUTXOs select optimal utxos for withdrawal Parameters: utxos - all unspent utxos withdrawAmount - total amount to withdraw networkFee - network fee withdrawTotal - total number of withdrawals Returns: selectedUtxos - selected utxos for withdrawal totalSelectedAmount - total amount of selected utxos withdrawAmount - total amount to withdraw (not minus tx fee yet) changeAmount - change amount after withdrawal estimatedFee - estimate fee error - error if any.

SelectWithdrawals select optimal withdrawals for withdrawal Parameters: withdrawals - all withdrawals can start networkFee - network fee maxVout - maximum vout count immediateCount - immediate count to start withdrawals net - bitcoin network Returns: selectedWithdrawals - selected withdrawals minTxPrice - minimum transaction price error - error if any.

SignTransactionByPrivKey, use PrivKey to sign the transaction, and select the corresponding signature method according to the UTXO type Parameters: privKey - private key tx - transaction utxos - all unspent utxos net - bitcoin network Returns: error - error if any.