区块链钱包—BTC Java版离线签名交易_bitcoinj p2wpkh 离线交易

对于离线交易不做过多解释~，说白了就是拿上一笔未发出交易记录进行私钥的签名然后广播到链上。

主要是对区块链离线交易进行utxo上链。

代码参考： https://gitee.com/DHing/signature-transaction

UnspentUtxo交易查询参考：https://blog.csdn.net/u011663149/article/details/91855077

 离线签名(非隔离见证地址):

import java.util.ArrayList;
import java.util.List;
 
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.configuration2.Configuration;
import org.bitcoinj.core.Address;
import org.bitcoinj.core.Coin;
import org.bitcoinj.core.Context;
import org.bitcoinj.core.DumpedPrivateKey;
import org.bitcoinj.core.ECKey;
import org.bitcoinj.core.NetworkParameters;
import org.bitcoinj.core.Sha256Hash;
import org.bitcoinj.core.Transaction;
import org.bitcoinj.core.TransactionOutPoint;
import org.bitcoinj.core.UTXO;
import org.bitcoinj.core.Utils;
import org.bitcoinj.params.MainNetParams;
import org.bitcoinj.params.TestNet3Params;
import org.bitcoinj.script.Script;
import org.omg.CORBA.UNKNOWN;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
import com.alibaba.fastjson.JSON;
import com.bscoin.coldwallet.cointype.common.ConfigUtil;
import com.bscoin.coldwallet.cointype.common.Un