/// <summary>
/// 验证该区块是否合法
/// </summary>
/// <param name="completely">是否同时验证区块中的每一笔交易</param>
/// <returns>返回该区块的合法性，返回true即为合法，否则，非法。</returns>
public bool Verify(bool completely)
{
if (!Verify())
{
return(false);
}
if (completely)
{
if (NextMiner != Blockchain.GetMinerAddress(Blockchain.Default.GetMiners(Transactions).ToArray()))
{
return(false);
}
foreach (Transaction tx in Transactions)
{
if (!tx.Verify())
{
return(false);
}
}
Transaction tx_gen = Transactions.FirstOrDefault(p => p.Type == TransactionType.MinerTransaction);
if (tx_gen?.Outputs.Sum(p => p.Value) != CalculateNetFee(Transactions))
{
return(false);
}
}
return(true);
}
/// <summary>
/// 验证该区块是否合法
/// </summary>
/// <param name="completely">是否同时验证区块中的每一笔交易</param>
/// <returns>返回该区块的合法性，返回true即为合法，否则，非法。</returns>
public bool Verify(bool completely)
{
if (!Verify())
{
return(false);
}
if (Transactions[0].Type != TransactionType.MinerTransaction || Transactions.Skip(1).Any(p => p.Type == TransactionType.MinerTransaction))
{
return(false);
}
if (completely)
{
if (NextConsensus != Blockchain.GetMinerAddress(Blockchain.Default.GetMiners(Transactions).ToArray()))
{
return(false);
}
foreach (Transaction tx in Transactions)
{
if (!tx.Verify(Transactions.Where(p => !p.Hash.Equals(tx.Hash))))
{
return(false);
}
}
Transaction tx_gen = Transactions.FirstOrDefault(p => p.Type == TransactionType.MinerTransaction);
if (tx_gen?.Outputs.Sum(p => p.Value) != CalculateNetFee(Transactions))
{
return(false);
}
}
return(true);
}
public bool Verify(bool completely)
{
if (Hash == Blockchain.GenesisBlock.Hash)
{
return(true);
}
if (Blockchain.Default.ContainsBlock(Hash))
{
return(true);
}
if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.TransactionIndexes) || !Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes))
{
return(false);
}
Block prev_header = Blockchain.Default.GetHeader(PrevBlock);
if (prev_header == null)
{
return(false);
}
if (prev_header.Height + 1 != Height)
{
return(false);
}
if (prev_header.Timestamp >= Timestamp)
{
return(false);
}
if (!this.VerifySignature())
{
return(false);
}
if (NextMiner != Blockchain.GetMinerAddress(Blockchain.Default.GetMiners(Transactions).ToArray()))
{
return(false);
}
if (completely)
{
foreach (Transaction tx in Transactions)
{
if (!tx.Verify())
{
return(false);
}
}
Transaction[] transactions = Transactions.Where(p => p.Type != TransactionType.MinerTransaction).ToArray();
Fixed8 amount_in = transactions.SelectMany(p => p.References.Values.Where(o => o.AssetId == Blockchain.AntCoin.Hash)).Sum(p => p.Value);
Fixed8 amount_out = transactions.SelectMany(p => p.Outputs.Where(o => o.AssetId == Blockchain.AntCoin.Hash)).Sum(p => p.Value);
Fixed8 amount_sysfee = transactions.Sum(p => p.SystemFee);
Fixed8 amount_netfee = amount_in - amount_out - amount_sysfee;
MinerTransaction tx_gen = Transactions.OfType <MinerTransaction>().FirstOrDefault();
if (tx_gen?.Outputs.Sum(p => p.Value) != amount_netfee)
{
return(false);
}
}
return(true);
}
/// <summary>
/// 验证该区块头是否合法
/// </summary>
/// <param name="completely">是否同时验证区块中的每一笔交易</param>
/// <returns>返回该区块头的合法性，返回true即为合法，否则，非法。</returns>
public bool Verify(bool completely)
{
if (Hash == Blockchain.GenesisBlock.Hash)
{
return(true);
}
if (Blockchain.Default.ContainsBlock(Hash))
{
return(true);
}
if (completely && IsHeader)
{
return(false);
}
if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.TransactionIndexes) || !Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes))
{
return(false);
}
Block prev_header = Blockchain.Default.GetHeader(PrevBlock);
if (prev_header == null)
{
return(false);
}
if (prev_header.Height + 1 != Height)
{
return(false);
}
if (prev_header.Timestamp >= Timestamp)
{
return(false);
}
if (!this.VerifySignature())
{
return(false);
}
if (completely)
{
if (NextMiner != Blockchain.GetMinerAddress(Blockchain.Default.GetMiners(Transactions).ToArray()))
{
return(false);
}
foreach (Transaction tx in Transactions)
{
if (!tx.Verify())
{
return(false);
}
}
Transaction tx_gen = Transactions.FirstOrDefault(p => p.Type == TransactionType.MinerTransaction);
if (tx_gen?.Outputs.Sum(p => p.Value) != CalculateNetFee(Transactions))
{
return(false);
}
}
return(true);
}
public bool Verify(bool completely)
{
if (Hash == Blockchain.GenesisBlock.Hash)
{
return(true);
}
if (Blockchain.Default.ContainsBlock(Hash))
{
return(true);
}
if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.TransactionIndexes) || !Blockchain.Default.Ability.HasFlag(BlockchainAbility.UnspentIndexes))
{
return(false);
}
Block prev_header = Blockchain.Default.GetHeader(PrevBlock);
if (prev_header == null)
{
return(false);
}
if (prev_header.Height + 1 != Height)
{
return(false);
}
if (prev_header.Timestamp >= Timestamp)
{
return(false);
}
if (!this.VerifySignature())
{
return(false);
}
if (NextMiner != Blockchain.GetMinerAddress(Blockchain.Default.GetMiners(Transactions).ToArray()))
{
return(false);
}
if (completely)
{
if (!Blockchain.Default.Ability.HasFlag(BlockchainAbility.Statistics))
{
return(false);
}
foreach (Transaction tx in Transactions)
{
if (!tx.Verify())
{
return(false);
}
}
var antshares = Blockchain.Default.GetUnspentAntShares().GroupBy(p => p.ScriptHash, (k, g) => new
{
ScriptHash = k,
Amount = g.Sum(p => p.Value)
}).OrderBy(p => p.Amount).ThenBy(p => p.ScriptHash).ToArray();
Transaction[] transactions = Transactions.Where(p => p.Type != TransactionType.GenerationTransaction).ToArray();
Fixed8 amount_in = transactions.SelectMany(p => p.References.Values.Where(o => o.AssetId == Blockchain.AntCoin.Hash)).Sum(p => p.Value);
Fixed8 amount_out = transactions.SelectMany(p => p.Outputs.Where(o => o.AssetId == Blockchain.AntCoin.Hash)).Sum(p => p.Value);
Fixed8 amount_sysfee = transactions.Sum(p => p.SystemFee);
Fixed8 amount_netfee = amount_in - amount_out - amount_sysfee;
Fixed8 quantity = Blockchain.Default.GetQuantityIssued(Blockchain.AntCoin.Hash);
Fixed8 gen = Fixed8.Zero;
if (Height % Blockchain.MintingInterval == 0 && antshares.Length > 0)
{
gen = Fixed8.FromDecimal((Blockchain.AntCoin.Amount - (quantity - amount_sysfee)).ToDecimal() * Blockchain.GenerationFactor);
}
GenerationTransaction tx_gen = Transactions.OfType <GenerationTransaction>().First();
if (tx_gen.Outputs.Sum(p => p.Value) != amount_netfee + gen)
{
return(false);
}
if (antshares.Length > 0)
{
ulong n = Nonce % (ulong)antshares.Sum(p => p.Amount).value;
ulong line = 0;
int i = -1;
do
{
line += (ulong)antshares[++i].Amount.value;
} while (line <= n);
if (tx_gen.Outputs.Where(p => p.ScriptHash == antshares[i].ScriptHash).Sum(p => p.Value) < gen)
{
return(false);
}
}
}
return(true);
}
