BitSharp.Core.Domain.BlockHeader.With C# (CSharp) Method

        public BlockHeader With(UInt32? Version = null, UInt256 PreviousBlock = null, UInt256 MerkleRoot = null, DateTimeOffset? Time = null, UInt32? Bits = null, UInt32? Nonce = null)
        {
            return BlockHeader.Create
            (
                Version ?? this.Version,
                PreviousBlock ?? this.PreviousBlock,
                MerkleRoot ?? this.MerkleRoot,
                Time ?? this.Time,
                Bits ?? this.Bits,
                Nonce ?? this.Nonce
            );
        }

        public BlockHeader MineBlockHeader(BlockHeader blockHeader, UInt256 hashTarget)
        {
            var blockHeaderBytes = DataEncoder.EncodeBlockHeader(blockHeader);

            var hashTargetBytes = hashTarget.ToByteArray();

            var start = 0;
            var finish = UInt32.MaxValue;
            var total = 0L;
            var nonceIndex = 76;
            var minedNonce = (UInt32?)null;

            logger.Debug($"Starting mining: {DateTime.Now:hh':'mm':'ss}");

            var stopwatch = Stopwatch.StartNew();

            Parallel.For(
                start, finish,
                () => new LocalMinerState(blockHeaderBytes),
                (nonceLong, loopState, localState) =>
                {
                    localState.total++;

                    var nonce = (UInt32)nonceLong;
                    var nonceBytes = Bits.GetBytes(nonce);
                    Buffer.BlockCopy(nonceBytes, 0, localState.headerBytes, nonceIndex, 4);

                    var headerBytes = localState.headerBytes;
                    var hashBytes = SHA256Static.ComputeDoubleHash(headerBytes);

                    if (BytesCompareLE(hashBytes, hashTargetBytes) < 0)
                    {
                        minedNonce = nonce;
                        loopState.Stop();
                    }

                    return localState;
                },
                localState => { Interlocked.Add(ref total, localState.total); });

            stopwatch.Stop();

            var hashRate = ((float)total / 1000 / 1000) / ((float)stopwatch.ElapsedMilliseconds / 1000);

            if (minedNonce != null)
            {
                logger.Debug($"Found block in {stopwatch.Elapsed:hh':'mm':'ss} hh:mm:ss at Nonce {minedNonce}, Hash Rate: {hashRate} mHash/s, Total Hash Attempts: {total:N0}, Found Hash: {blockHeader.With(Nonce: minedNonce).Hash}");
                return blockHeader.With(Nonce: minedNonce);
            }
            else
            {
                logger.Debug($"No block found in {stopwatch.Elapsed:hh':'mm':'ss} hh:mm:ss, Hash Rate: {hashRate} mHash/s, Total Hash Attempts: {total:N0}, Found Hash: {blockHeader.With(Nonce: minedNonce).Hash}");
                return null;
            }
        }