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();
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();
((ISmartContractBlockHeader)genesis.Header).HashStateRoot = SmartContractBlockDefinition.StateRootEmptyTrie;
return(genesis);
}
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);
}
public bool CompleteTx(Transaction tx, Money fees, Account pool = null)
{
pool = pool ?? Accounts.Available;
var entries = pool.GetEntriesToCover(tx.TotalOut + fees, false);
if(entries == null)
return false;
foreach(var entry in entries)
{
tx.AddInput(new TxIn(entry.OutPoint));
}
var surplus = entries.Sum(i => i.TxOut.Value) - fees - tx.TotalOut;
if(surplus != Money.Zero)
tx.AddOutput(surplus, GetKey().PubKey.ID);
for(int i = 0 ; i < entries.Length ; i++)
{
var entry = entries[i];
var vin = tx.Inputs[i];
var key = GetKey(entry.TxOut.ScriptPubKey.GetDestination());
tx.Inputs[i].ScriptSig = new PayToPubkeyHashTemplate().GenerateScriptPubKey(key.PubKey);
var hash = tx.Inputs[i].ScriptSig.SignatureHash(tx, i, SigHash.All);
var sig = key.Sign(hash);
tx.Inputs[i].ScriptSig = new PayToPubkeyHashTemplate().GenerateScriptSig(new TransactionSignature(sig, SigHash.All), key.PubKey);
}
return true;
}
/// <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;
txNew.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);
}
public void CanSignTransactionStandardMode()
{
var ledger = GetLedger();
var walletPubKey = ledger.GetWalletPubKey(new KeyPath("1'/0"));
var address = (BitcoinAddress)walletPubKey.Address;
Transaction funding = new Transaction();
funding.AddInput(Network.Main.GetGenesis().Transactions[0].Inputs[0]);
funding.Outputs.Add(new TxOut(Money.Coins(1.1m), address));
funding.Outputs.Add(new TxOut(Money.Coins(1.0m), address));
funding.Outputs.Add(new TxOut(Money.Coins(1.2m), address));
var coins = funding.Outputs.AsCoins();
var spending = new Transaction();
spending.LockTime = 1;
spending.Inputs.AddRange(coins.Select(o => new TxIn(o.Outpoint, o.ScriptPubKey)));
spending.Outputs.Add(new TxOut(Money.Coins(0.5m), BitcoinAddress.Create("15sYbVpRh6dyWycZMwPdxJWD4xbfxReeHe")));
spending.Outputs.Add(new TxOut(Money.Coins(0.8m), address));
spending.Outputs.Add(new TxOut(Money.Zero, TxNullDataTemplate.Instance.GenerateScriptPubKey(new byte[] { 1, 2 })));
var signed = ledger.SignTransaction(
new KeyPath("1'/0"),
new Coin[]
{
new Coin(funding, 0),
new Coin(funding, 1),
new Coin(funding, 2),
}, new Transaction[]
{
funding
}, spending);
}
