public static Block Load(byte[] bytes, ConsensusFactory consensusFactory)
{
if (bytes == null)
{
throw new ArgumentNullException(nameof(bytes));
}
if (consensusFactory == null)
{
throw new ArgumentNullException(nameof(consensusFactory));
}
Block block = consensusFactory.CreateBlock();
block.ReadWrite(bytes, consensusFactory);
return(block);
}
public static Block Parse(string hex, ConsensusFactory consensusFactory)
{
if (string.IsNullOrEmpty(hex))
{
throw new ArgumentNullException(nameof(hex));
}
if (consensusFactory == null)
{
throw new ArgumentNullException(nameof(consensusFactory));
}
Block block = consensusFactory.CreateBlock();
block.ReadWrite(Encoders.Hex.DecodeData(hex), consensusFactory);
return(block);
}
public static NBitcoin.Block CreateGenesis(ConsensusFactory consensusFactory, uint genesisTime, uint nonce, uint bits, int version, Money reward)
{
string timeStamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
var genesisOutputScript = new Script(Op.GetPushOp(Encoders.Hex.DecodeData("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f")), OpcodeType.OP_CHECKSIG);
NBitcoin.Transaction genesisTransaction = consensusFactory.CreateTransaction();
// TODO: Similar potential problem to Cirrus genesis definition
if (genesisTransaction is IPosTransactionWithTime posTx)
{
posTx.Time = genesisTime;
}
genesisTransaction.Version = 1;
genesisTransaction.AddInput(new TxIn()
{
ScriptSig = new Script(Op.GetPushOp(486604799), new Op()
{
Code = (OpcodeType)0x1,
PushData = new[] { (byte)4 }
}, Op.GetPushOp(Encoders.ASCII.DecodeData(timeStamp)))
});
genesisTransaction.AddOutput(new TxOut()
{
Value = reward,
ScriptPubKey = genesisOutputScript
});
NBitcoin.Block genesis = consensusFactory.CreateBlock();
genesis.Header.BlockTime = Utils.UnixTimeToDateTime(genesisTime);
genesis.Header.Bits = bits;
genesis.Header.Nonce = nonce;
genesis.Header.Version = version;
genesis.Transactions.Add(genesisTransaction);
genesis.Header.HashPrevBlock = uint256.Zero;
genesis.UpdateMerkleRoot();
((SmartContractBlockHeader)genesis.Header).HashStateRoot = new uint256("21B463E3B52F6201C0AD6C991BE0485B6EF8C092E64583FFA655CC1B171FE856");
return(genesis);
}
private static Block CreateBiblepayGenesisBlock(ConsensusFactory consensusFactory, string pszTimestamp, uint nTime,
uint nNonce, uint nBits, int nVersion, Money genesisReward)
{
Transaction txNew = new Transaction();
txNew.Version = 1;
txNew.AddInput(new TxIn()
{
ScriptSig = new Script(Op.GetPushOp(486604799), new Op()
{
Code = (OpcodeType)0x1,
PushData = new[] { (byte)4 }
}, Op.GetPushOp(Encoders.ASCII.DecodeData(pszTimestamp)))
});
Script genesisOutputScript = new Script(Op.GetPushOp(Encoders.Hex.DecodeData("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9")), OpcodeType.OP_CHECKSIG);
txNew.AddOutput(new TxOut()
{
Value = genesisReward,
ScriptPubKey = genesisOutputScript
});
byte[] b = new byte[1];
b[0] = 0;
txNew.Outputs[0].sTxOutMessage = b;
Block genesis = consensusFactory.CreateBlock();
genesis.Header.BlockTime = Utils.UnixTimeToDateTime(nTime);
genesis.Header.Bits = nBits;
genesis.Header.Nonce = nNonce;
genesis.Header.Version = 1;
genesis.Transactions.Add(txNew);
genesis.Header.HashPrevBlock = uint256.Zero;
genesis.UpdateMerkleRoot();
BiblePayTestBed();
return(genesis);
}
public Block GetBlock(uint256 blockId)
{
var ms = new MemoryStream();
var container = Configuration.GetBlocksContainer();
try
{
container.GetPageBlobReference(blockId.ToString()).DownloadToStreamAsync(ms).GetAwaiter().GetResult();
ms.Position = 0;
Block b = ConsensusFactory.CreateBlock();
b.ReadWrite(ms, false, Configuration.Network);
return(b);
}
catch (StorageException ex)
{
if (ex.RequestInformation != null && ex.RequestInformation.HttpStatusCode == 404)
{
return(null);
}
throw;
}
}
protected static Block CreateBitcoinGenesisBlock(ConsensusFactory consensusFactory, uint nTime, uint nNonce, uint nBits, int nVersion, Money genesisReward)
{
string pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
var genesisOutputScript = new Script(Op.GetPushOp(Encoders.Hex.DecodeData("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f")), OpcodeType.OP_CHECKSIG);
Transaction txNew = consensusFactory.CreateTransaction();
txNew.Version = 1;
txNew.AddInput(new TxIn()
{
ScriptSig = new Script(Op.GetPushOp(486604799), new Op()
{
Code = (OpcodeType)0x1,
PushData = new[] { (byte)4 }
}, Op.GetPushOp(Encoders.ASCII.DecodeData(pszTimestamp)))
});
txNew.AddOutput(new TxOut()
{
Value = genesisReward,
ScriptPubKey = genesisOutputScript
});
// txNew.Outputs[0].ScriptPubKey = const CScript genesisOutputScript = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
byte[] b = new byte[1];
b[0] = 0;
txNew.Outputs[0].sTxOutMessage = b;
Block genesis = consensusFactory.CreateBlock();
genesis.Header.BlockTime = Utils.UnixTimeToDateTime(nTime);
genesis.Header.Bits = nBits;
genesis.Header.Nonce = nNonce;
genesis.Header.Version = nVersion;
genesis.Transactions.Add(txNew);
genesis.Header.HashPrevBlock = uint256.Zero;
genesis.UpdateMerkleRoot();
return(genesis);
}
/// <summary>
/// Create a block with the specified option only. (useful for stripping data from a block).
/// </summary>
/// <param name="consensusFactory">The network consensus factory.</param>
/// <param name="options">Options to keep.</param>
/// <returns>A new block with only the options wanted.</returns>
public Block WithOptions(ConsensusFactory consensusFactory, TransactionOptions options)
{
if (this.Transactions.Count == 0)
{
return(this);
}
if ((options == TransactionOptions.Witness) && this.Transactions[0].HasWitness)
{
return(this);
}
if ((options == TransactionOptions.None) && !this.Transactions[0].HasWitness)
{
return(this);
}
Block instance = consensusFactory.CreateBlock();
using (var ms = new MemoryStream())
{
var bms = new BitcoinStream(ms, true, consensusFactory)
{
TransactionOptions = options,
};
this.ReadWrite(bms);
ms.Position = 0;
bms = new BitcoinStream(ms, false, consensusFactory)
{
TransactionOptions = options,
};
instance.ReadWrite(bms);
}
return(instance);
}
private static Block CreateXRCGenesisBlock(ConsensusFactory consensusFactory, string message, uint nTime, uint nNonce, uint nBits, int nVersion, string pubKey)
{
//nTime = 1512043200 => Thursday, November 30, 2017 12:00:00 PM (born XRC)
//nTime = 1527811200 => Friday, Jun 1, 2017 12:00:00 PM (born TestXRC)
//nBits = 0x1d00ffff (it is exactly 0x1b = 27 bytes long) => 0x00ffff0000000000000000000000000000000000000000000000000000 => 1
//nNonce = XTimes to trying to find a genesis block
Transaction txNew = consensusFactory.CreateTransaction();
txNew.Version = 2;
if (txNew is IPosTransactionWithTime posTx)
{
posTx.Time = nTime;
}
txNew.AddInput(new TxIn()
{
ScriptSig = new Script(Op.GetPushOp(nBits), new Op()
{
Code = (OpcodeType)0x1,
PushData = new[] { (byte)4 }
}, Op.GetPushOp(Encoders.ASCII.DecodeData(message)))
});
txNew.AddOutput(new TxOut()
{
Value = Money.Zero,
ScriptPubKey = Script.FromBytesUnsafe(Encoders.Hex.DecodeData(pubKey))
});
Block genesis = consensusFactory.CreateBlock();
genesis.Header.BlockTime = Utils.UnixTimeToDateTime(nTime);
genesis.Header.Bits = nBits;
genesis.Header.Nonce = nNonce;
genesis.Header.Version = nVersion;
genesis.Transactions.Add(txNew);
genesis.Header.HashPrevBlock = uint256.Zero;
genesis.UpdateMerkleRoot();
return(genesis);
}
protected static Block CreateGenesisBlock(ConsensusFactory consensusFactory, uint nTime, uint nNonce, uint nBits, int nVersion, Money genesisReward, string genesisText)
{
Transaction txNew = consensusFactory.CreateTransaction();
txNew.Version = 1;
if (txNew is IPosTransactionWithTime posTx)
{
posTx.Time = nTime;
}
txNew.AddInput(new TxIn()
{
ScriptSig = new Script(Op.GetPushOp(0), new Op()
{
Code = (OpcodeType)0x1,
PushData = new[] { (byte)42 }
}, Op.GetPushOp(Encoders.ASCII.DecodeData(genesisText)))
});
txNew.AddOutput(new TxOut()
{
Value = genesisReward,
});
Block genesis = consensusFactory.CreateBlock();
genesis.Header.BlockTime = Utils.UnixTimeToDateTime(nTime);
genesis.Header.Bits = nBits;
genesis.Header.Nonce = nNonce;
genesis.Header.Version = nVersion;
genesis.Transactions.Add(txNew);
genesis.Header.HashPrevBlock = uint256.Zero;
genesis.UpdateMerkleRoot();
return(genesis);
}
/// <summary>
/// Mines a new genesis block, to use with a new network.
/// Typically, 3 such genesis blocks need to be created when bootstrapping a new coin: for Main, Test and Reg networks.
/// </summary>
/// <param name="consensusFactory">
/// The consensus factory used to create transactions and blocks.
/// Use <see cref="PosConsensusFactory"/> for proof-of-stake based networks.
/// </param>
/// <param name="coinbaseText">
/// Traditionally a news headline from the day of the launch, but could be any string or link.
/// This will be inserted in the input coinbase transaction script.
/// It should be shorter than 92 characters.
/// </param>
/// <param name="target">
/// The difficulty target under which the hash of the block need to be.
/// Some more details: As an example, the target for the Stratis Main network is 00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff.
/// To make it harder to mine the genesis block, have more zeros at the beginning (keeping the length the same). This will make the target smaller, so finding a number under it will be more difficult.
/// To make it easier to mine the genesis block ,do the opposite. Example of an easy one: 00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff.
/// Make the Test and Reg targets ones easier to find than the Main one so that you don't wait too long to mine the genesis block.
/// </param>
/// <param name="genesisReward">
/// Specify how many coins to put in the genesis transaction's output. These coins are unspendable.
/// </param>
/// <param name="version">
/// The version of the transaction and the block header set in the genesis block.
/// </param>
/// <example>
/// The following example shows the creation of a genesis block.
/// <code>
/// Block genesis = MineGenesisBlock(new PosConsensusFactory(), "Some topical headline.", new Target(new uint256("000fffff00000000000000000000000000000000000000000000000000000000")), Money.Coins(50m));
/// BlockHeader header = genesis.Header;
/// Console.WriteLine("Make a note of the following values:");
/// Console.WriteLine("bits: " + header.Bits);
/// Console.WriteLine("nonce: " + header.Nonce);
/// Console.WriteLine("time: " + header.Time);
/// Console.WriteLine("version: " + header.Version);
/// Console.WriteLine("hash: " + header.GetHash());
/// Console.WriteLine("merkleroot: " + header.HashMerkleRoot);
/// </code>
/// </example>
/// <returns>A genesis block.</returns>
public static Block MineGenesisBlock(ConsensusFactory consensusFactory, string coinbaseText, Target target, Money genesisReward, int version = 1)
{
if (consensusFactory == null)
{
throw new ArgumentException($"Parameter '{nameof(consensusFactory)}' cannot be null. Use 'new ConsensusFactory()' for Bitcoin-like proof-of-work blockchains and 'new PosConsensusFactory()' for Stratis-like proof-of-stake blockchains.");
}
if (string.IsNullOrEmpty(coinbaseText))
{
throw new ArgumentException($"Parameter '{nameof(coinbaseText)}' cannot be null. Use a news headline or any other appropriate string.");
}
if (target == null)
{
throw new ArgumentException($"Parameter '{nameof(target)}' cannot be null. Example use: new Target(new uint256(\"0000ffff00000000000000000000000000000000000000000000000000000000\"))");
}
if (coinbaseText.Length >= 92)
{
throw new ArgumentException($"Parameter '{nameof(coinbaseText)}' should be shorter than 92 characters.");
}
if (genesisReward == null)
{
throw new ArgumentException($"Parameter '{nameof(genesisReward)}' cannot be null. Example use: 'Money.Coins(50m)'.");
}
DateTimeOffset time = DateTimeOffset.Now;
uint unixTime = Utils.DateTimeToUnixTime(time);
Transaction txNew = consensusFactory.CreateTransaction();
txNew.Version = (uint)version;
if (txNew is IPosTransactionWithTime posTx)
{
posTx.Time = unixTime;
}
txNew.AddInput(new TxIn()
{
ScriptSig = new Script(
Op.GetPushOp(0),
new Op()
{
Code = (OpcodeType)0x1,
PushData = new[] { (byte)42 }
},
Op.GetPushOp(Encoders.ASCII.DecodeData(coinbaseText)))
});
txNew.AddOutput(new TxOut()
{
Value = genesisReward,
});
Block genesis = consensusFactory.CreateBlock();
genesis.Header.BlockTime = time;
genesis.Header.Bits = target;
genesis.Header.Nonce = 0;
genesis.Header.Version = version;
genesis.Transactions.Add(txNew);
genesis.Header.HashPrevBlock = uint256.Zero;
genesis.UpdateMerkleRoot();
// Iterate over the nonce until the proof-of-work is valid.
// This will mean the block header hash is under the target.
while (!genesis.CheckProofOfWork())
{
genesis.Header.Nonce++;
if (genesis.Header.Nonce == 0)
{
genesis.Header.Time++;
}
}
return(genesis);
}
