protected virtual Transaction CreateOutputTransaction()
{
rewardToPool = new Money(BlockTemplate.CoinbaseValue * blockRewardMultiplier, MoneyUnit.Satoshi);
var tx = new Transaction();
tx.Outputs.Insert(0, new TxOut(rewardToPool, poolAddressDestination)
{
Value = rewardToPool
});
return(tx);
}
protected virtual byte[] SerializeOutputTransaction(Transaction tx)
{
var withDefaultWitnessCommitment = !string.IsNullOrEmpty(BlockTemplate.DefaultWitnessCommitment);
var outputCount = (uint)tx.Outputs.Count;
if (withDefaultWitnessCommitment)
{
outputCount++;
}
using (var stream = new MemoryStream())
{
var bs = new SonoStream(stream, true);
// write output count
bs.ReadWriteAsVarInt(ref outputCount);
long amount;
byte[] raw;
uint rawLength;
// serialize witness (segwit)
if (withDefaultWitnessCommitment)
{
amount = 0;
raw = BlockTemplate.DefaultWitnessCommitment.HexToByteArray();
rawLength = (uint)raw.Length;
bs.ReadWrite(ref amount);
bs.ReadWriteAsVarInt(ref rawLength);
bs.ReadWrite(ref raw);
}
// serialize outputs
foreach (var output in tx.Outputs)
{
amount = output.Value.Satoshi;
var outScript = output.ScriptPubKey;
raw = outScript.ToBytes(true);
rawLength = (uint)raw.Length;
bs.ReadWrite(ref amount);
bs.ReadWriteAsVarInt(ref rawLength);
bs.ReadWrite(ref raw);
}
return(stream.ToArray());
}
}
protected virtual void BuildCoinbase()
{
// generate script parts
var sigScriptInitial = GenerateScriptSigInitial();
var sigScriptInitialBytes = sigScriptInitial.ToBytes();
var sigScriptLength = (uint)(
sigScriptInitial.Length +
extraNoncePlaceHolderLength +
scriptSigFinalBytes.Length);
// output transaction
txOut = CreateOutputTransaction();
// build coinbase initial
using (var stream = new MemoryStream())
{
var bs = new SonoStream(stream, true);
// version
bs.ReadWrite(ref txVersion);
// timestamp for POS coins
if (isPoS)
{
var timestamp = BlockTemplate.CurTime;
bs.ReadWrite(ref timestamp);
}
// serialize (simulated) input transaction
bs.ReadWriteAsVarInt(ref txInputCount);
bs.ReadWrite(ref sha256Empty);
bs.ReadWrite(ref txInPrevOutIndex);
// signature script initial part
bs.ReadWriteAsVarInt(ref sigScriptLength);
bs.ReadWrite(ref sigScriptInitialBytes);
// done
coinbaseInitial = stream.ToArray();
coinbaseInitialHex = coinbaseInitial.ToHexString();
}
// build coinbase final
using (var stream = new MemoryStream())
{
var bs = new SonoStream(stream, true);
// signature script final part
bs.ReadWrite(ref scriptSigFinalBytes);
// tx in sequence
bs.ReadWrite(ref txInSequence);
// serialize output transaction
var txOutBytes = SerializeOutputTransaction(txOut);
bs.ReadWrite(ref txOutBytes);
// misc
bs.ReadWrite(ref txLockTime);
// done
coinbaseFinal = stream.ToArray();
coinbaseFinalHex = coinbaseFinal.ToHexString();
}
}
