feat(chain): network profiles and consensus constants

This commit is contained in:
2026-06-11 10:46:20 +02:00
parent ca70570242
commit cdd19024ad
3 changed files with 349 additions and 0 deletions
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namespace PalladiumWallet.Core.Chain;
/// <summary>
/// Tipo di rete supportato (selettore unico per tutto il wallet, blueprint §3).
/// </summary>
public enum NetKind
{
Mainnet,
Testnet,
Regtest,
}
/// <summary>
/// Tipo di script/indirizzo supportato (blueprint §4.3).
/// </summary>
public enum ScriptKind
{
/// <summary>P2PKH legacy.</summary>
Legacy,
/// <summary>P2SH-P2WPKH (segwit wrapped).</summary>
WrappedSegwit,
/// <summary>P2WPKH (native segwit) — default consigliato.</summary>
NativeSegwit,
/// <summary>P2SH-P2WSH (multisig wrapped).</summary>
WrappedSegwitMultisig,
/// <summary>P2WSH (multisig native).</summary>
NativeSegwitMultisig,
}
/// <summary>
/// Coppia di header di versione BIP32 (4 byte big-endian) per serializzare
/// xprv/xpub e varianti SLIP-132 (y/z/Y/Z) — blueprint §3.
/// </summary>
public readonly record struct ExtKeyHeaders(uint Private, uint Public)
{
/// <summary>Header privato come 4 byte big-endian (da anteporre al payload BIP32).</summary>
public byte[] PrivateBytes() => ToBytes(Private);
/// <summary>Header pubblico come 4 byte big-endian.</summary>
public byte[] PublicBytes() => ToBytes(Public);
internal static byte[] ToBytes(uint header) =>
[
(byte)(header >> 24),
(byte)(header >> 16),
(byte)(header >> 8),
(byte)header,
];
}
/// <summary>
/// Server di indicizzazione di bootstrap: host + porta TCP + porta SSL (blueprint §3/§9).
/// </summary>
public readonly record struct ServerEndpoint(string Host, int TcpPort, int SslPort);
/// <summary>
/// Checkpoint di catena: ancora la fiducia quando la verifica PoW è disattivata
/// (blueprint §7.3). Target serializzato come "bits" compatti.
/// </summary>
public readonly record struct Checkpoint(int Height, string BlockHash, uint Bits);
/// <summary>
/// Profilo di rete/catena (blueprint §3): tutte le costanti specifiche della catena,
/// centralizzate in un solo punto. Nessun magic number altrove nel codice.
/// </summary>
public sealed record ChainProfile
{
public required NetKind Kind { get; init; }
/// <summary>Nome rete, usato anche come sottocartella dati.</summary>
public required string NetName { get; init; }
/// <summary>Simbolo dell'unità (es. PLM).</summary>
public required string CoinUnit { get; init; }
/// <summary>Prefisso WIF delle chiavi private.</summary>
public required byte WifPrefix { get; init; }
/// <summary>Byte di versione indirizzi P2PKH.</summary>
public required byte AddrP2pkh { get; init; }
/// <summary>Byte di versione indirizzi P2SH.</summary>
public required byte AddrP2sh { get; init; }
/// <summary>Human-readable part bech32/bech32m.</summary>
public required string SegwitHrp { get; init; }
/// <summary>HRP fatture BOLT11 (Lightning, fase successiva — §11).</summary>
public required string Bolt11Hrp { get; init; }
/// <summary>Hash del blocco genesi (hex, byte order da explorer).</summary>
public required string GenesisHash { get; init; }
/// <summary>Porta TCP del server di indicizzazione (non è la porta P2P del nodo).</summary>
public required int DefaultTcpPort { get; init; }
/// <summary>Porta SSL del server di indicizzazione.</summary>
public required int DefaultSslPort { get; init; }
/// <summary>Porta P2P del nodo — solo informativa: il wallet SPV non la usa.</summary>
public required int NodeP2pPort { get; init; }
/// <summary>Coin type SLIP-0044 nei derivation path (convenzione wallet).</summary>
public required int Bip44CoinType { get; init; }
/// <summary>Schema URI pagamenti BIP21 (senza i due punti).</summary>
public required string UriScheme { get; init; }
/// <summary>Block explorer di default.</summary>
public required string ExplorerUrl { get; init; }
/// <summary>
/// La catena usa LWMA (retargeting per-blocco, 2 minuti): un client SPV non può
/// ricalcolarla, quindi la verifica bits/target va saltata e la fiducia ancorata
/// ai checkpoint (§3/§7). Per la catena di riferimento è sempre true.
/// </summary>
public required bool SkipPowValidation { get; init; }
/// <summary>Tempo di blocco target in secondi (LWMA v2: 120s).</summary>
public required int BlockTimeSeconds { get; init; }
/// <summary>Header BIP32/SLIP-132 per ciascun tipo di script.</summary>
public required IReadOnlyDictionary<ScriptKind, ExtKeyHeaders> ExtKeyHeaders { get; init; }
/// <summary>Server di indicizzazione per il primo contatto (bootstrap).</summary>
public required IReadOnlyList<ServerEndpoint> BootstrapServers { get; init; }
/// <summary>Checkpoint hardcoded, aggiornati a ogni release (§7.3).</summary>
public required IReadOnlyList<Checkpoint> Checkpoints { get; init; }
}
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namespace PalladiumWallet.Core.Chain;
/// <summary>
/// I tre profili di rete del wallet (blueprint §3). Valori mainnet verificati
/// contro il sorgente del nodo (chainparams.cpp / pow.cpp) secondo il blueprint.
/// </summary>
public static class ChainProfiles
{
public static ChainProfile Mainnet { get; } = new()
{
Kind = NetKind.Mainnet,
NetName = "mainnet",
CoinUnit = "PLM",
WifPrefix = 0x80,
AddrP2pkh = 55, // indirizzi che iniziano con 'P'
AddrP2sh = 5, // indirizzi che iniziano con '3'
SegwitHrp = "plm",
Bolt11Hrp = "plm",
// La mainnet riusa la genesi di Bitcoin (blueprint §3).
GenesisHash = "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
DefaultTcpPort = 50001,
DefaultSslPort = 50002,
NodeP2pPort = 2333,
Bip44CoinType = 746,
UriScheme = "palladium",
ExplorerUrl = "https://explorer.palladium-coin.com/",
SkipPowValidation = true,
BlockTimeSeconds = 120,
ExtKeyHeaders = new Dictionary<ScriptKind, ExtKeyHeaders>
{
[ScriptKind.Legacy] = new(0x0488ade4, 0x0488b21e), // xprv / xpub
[ScriptKind.WrappedSegwit] = new(0x049d7878, 0x049d7cb2), // yprv / ypub
[ScriptKind.WrappedSegwitMultisig] = new(0x0295b005, 0x0295b43f), // Yprv / Ypub
[ScriptKind.NativeSegwit] = new(0x04b2430c, 0x04b24746), // zprv / zpub
[ScriptKind.NativeSegwitMultisig] = new(0x02aa7a99, 0x02aa7ed3), // Zprv / Zpub
},
// TODO: popolare con i server reali prima della release (host:tcp:ssl).
BootstrapServers = [],
// TODO: popolare con [hash, bits] reali della catena (§7.3) prima della release.
Checkpoints = [],
};
public static ChainProfile Testnet { get; } = Mainnet with
{
Kind = NetKind.Testnet,
NetName = "testnet",
WifPrefix = 0xff,
AddrP2pkh = 127,
AddrP2sh = 115,
SegwitHrp = "tplm",
Bolt11Hrp = "tplm",
// TODO: verificare contro chainparams.cpp del nodo (il blueprint non la riporta;
// qui si assume la genesi di Bitcoin testnet3, da confermare).
GenesisHash = "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943",
NodeP2pPort = 12333,
Bip44CoinType = 1,
ExtKeyHeaders = new Dictionary<ScriptKind, ExtKeyHeaders>
{
// tprv/tpub dal blueprint; le varianti SLIP-132 testnet (u/v/U/V) sono
// i valori standard Electrum.
[ScriptKind.Legacy] = new(0x04358394, 0x043587cf), // tprv / tpub
[ScriptKind.WrappedSegwit] = new(0x044a4e28, 0x044a5262), // uprv / upub
[ScriptKind.WrappedSegwitMultisig] = new(0x024285b5, 0x024289ef), // Uprv / Upub
[ScriptKind.NativeSegwit] = new(0x045f18bc, 0x045f1cf6), // vprv / vpub
[ScriptKind.NativeSegwitMultisig] = new(0x02575048, 0x02575483), // Vprv / Vpub
},
BootstrapServers = [],
Checkpoints = [],
};
public static ChainProfile Regtest { get; } = Testnet with
{
Kind = NetKind.Regtest,
NetName = "regtest",
SegwitHrp = "rplm",
Bolt11Hrp = "rplm",
// TODO: verificare contro chainparams.cpp del nodo (assunta genesi regtest Bitcoin).
GenesisHash = "0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206",
NodeP2pPort = 28444,
Checkpoints = [],
};
public static ChainProfile For(NetKind kind) => kind switch
{
NetKind.Mainnet => Mainnet,
NetKind.Testnet => Testnet,
NetKind.Regtest => Regtest,
_ => throw new ArgumentOutOfRangeException(nameof(kind)),
};
}
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using NBitcoin;
using NBitcoin.DataEncoders;
namespace PalladiumWallet.Core.Chain;
/// <summary>
/// Costruisce e registra le <see cref="Network"/> NBitcoin di Palladium a partire dai
/// <see cref="ChainProfiles"/> (blueprint §19.3). Tutto il resto del codice ottiene la
/// rete da qui, mai da costanti sparse.
/// </summary>
/// <summary>
/// Identità della moneta per NBitcoin: raggruppa le tre reti sotto il codice PLM.
/// I getter sono lazy, quindi nessuna ricorsione durante la costruzione.
/// </summary>
public sealed class PalladiumNetworkSet : INetworkSet
{
public static readonly PalladiumNetworkSet Instance = new();
private PalladiumNetworkSet() { }
public string CryptoCode => "PLM";
public Network Mainnet => PalladiumNetworks.Mainnet;
public Network Testnet => PalladiumNetworks.Testnet;
public Network Regtest => PalladiumNetworks.Regtest;
public Network GetNetwork(ChainName chainName)
{
if (chainName == ChainName.Mainnet) return Mainnet;
if (chainName == ChainName.Testnet) return Testnet;
if (chainName == ChainName.Regtest) return Regtest;
throw new ArgumentOutOfRangeException(nameof(chainName));
}
}
public static class PalladiumNetworks
{
// Blocco genesi di Bitcoin (la mainnet Palladium lo riusa, blueprint §3).
private const string MainGenesisHex =
"0100000000000000000000000000000000000000000000000000000000000000000000003ba3edfd7a7b12b27ac72c3e67768f617fc81bc3888a51323a9fb8aa4b1e5e4a29ab5f49ffff001d1dac2b7c" +
Coinbase;
// Genesi testnet3/regtest di Bitcoin: stessa coinbase, cambiano time/bits/nonce.
// TODO: confermare contro chainparams.cpp del nodo (vedi ChainProfiles).
private const string TestGenesisHex =
"0100000000000000000000000000000000000000000000000000000000000000000000003ba3edfd7a7b12b27ac72c3e67768f617fc81bc3888a51323a9fb8aa4b1e5e4adae5494dffff001d1aa4ae18" +
Coinbase;
private const string RegtestGenesisHex =
"0100000000000000000000000000000000000000000000000000000000000000000000003ba3edfd7a7b12b27ac72c3e67768f617fc81bc3888a51323a9fb8aa4b1e5e4adae5494dffff7f2002000000" +
Coinbase;
private const string Coinbase =
"0101000000010000000000000000000000000000000000000000000000000000000000000000ffffffff4d04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73ffffffff0100f2052a01000000434104678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5fac00000000";
private static readonly Lazy<Network> _mainnet = new(() => Build(ChainProfiles.Mainnet, MainGenesisHex, 0x504c4d4du));
private static readonly Lazy<Network> _testnet = new(() => Build(ChainProfiles.Testnet, TestGenesisHex, 0x504c4d54u));
private static readonly Lazy<Network> _regtest = new(() => Build(ChainProfiles.Regtest, RegtestGenesisHex, 0x504c4d52u));
public static Network Mainnet => _mainnet.Value;
public static Network Testnet => _testnet.Value;
public static Network Regtest => _regtest.Value;
public static Network For(NetKind kind) => kind switch
{
NetKind.Mainnet => Mainnet,
NetKind.Testnet => Testnet,
NetKind.Regtest => Regtest,
_ => throw new ArgumentOutOfRangeException(nameof(kind)),
};
private static Network Build(ChainProfile p, string genesisHex, uint magic)
{
var legacy = p.ExtKeyHeaders[ScriptKind.Legacy];
var builder = new NetworkBuilder()
.SetName($"plm-{p.NetName}")
.SetNetworkSet(PalladiumNetworkSet.Instance)
.SetChainName(p.Kind switch
{
NetKind.Mainnet => ChainName.Mainnet,
NetKind.Testnet => ChainName.Testnet,
_ => ChainName.Regtest,
})
// Magic P2P solo segnaposto: il wallet SPV non apre mai connessioni P2P
// (parla solo col server di indicizzazione, §3). Serve a NBitcoin per
// distinguere le reti registrate.
.SetMagic(magic)
.SetPort(p.NodeP2pPort)
.SetRPCPort(p.NodeP2pPort + 1)
.SetGenesis(genesisHex)
.SetBase58Bytes(Base58Type.PUBKEY_ADDRESS, [p.AddrP2pkh])
.SetBase58Bytes(Base58Type.SCRIPT_ADDRESS, [p.AddrP2sh])
.SetBase58Bytes(Base58Type.SECRET_KEY, [p.WifPrefix])
// NBitcoin gestisce una sola coppia di header BIP32 per rete: quella
// standard xprv/xpub. Le varianti SLIP-132 (y/z/Y/Z) si serializzano
// a mano con ChainProfile.ExtKeyHeaders quando servono.
.SetBase58Bytes(Base58Type.EXT_SECRET_KEY, legacy.PrivateBytes())
.SetBase58Bytes(Base58Type.EXT_PUBLIC_KEY, legacy.PublicBytes())
.SetBech32(Bech32Type.WITNESS_PUBKEY_ADDRESS, Encoders.Bech32(p.SegwitHrp))
.SetBech32(Bech32Type.WITNESS_SCRIPT_ADDRESS, Encoders.Bech32(p.SegwitHrp))
.SetBech32(Bech32Type.TAPROOT_ADDRESS, Encoders.Bech32(p.SegwitHrp))
.SetUriScheme(p.UriScheme)
.SetConsensus(new Consensus
{
// Valori usati solo dalle API NBitcoin che li richiedono: la validazione
// header reale è custom (Core/Spv) con skip PoW + checkpoint (§7).
PowLimit = new Target(new uint256("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff")),
PowTargetSpacing = TimeSpan.FromSeconds(p.BlockTimeSeconds),
PowTargetTimespan = TimeSpan.FromDays(14),
PowAllowMinDifficultyBlocks = p.Kind != NetKind.Mainnet,
PowNoRetargeting = p.Kind == NetKind.Regtest,
SubsidyHalvingInterval = 210000,
MajorityEnforceBlockUpgrade = 750,
MajorityRejectBlockOutdated = 950,
MajorityWindow = 1000,
MinimumChainWork = uint256.Zero,
CoinbaseMaturity = 100,
SupportSegwit = true,
SupportTaproot = true,
ConsensusFactory = new ConsensusFactory(),
});
return builder.BuildAndRegister();
}
}