bitcoin-libraries-nbitcoin
NBitcoin: comprehensive .NET / C# Bitcoin library. Used by BTCPay Server, NBXplorer, many .NET tools. Tx, Script, PSBT, BIP32, HW wallet integration. USE WHEN: building .NET Bitcoin apps, integrating with BTCPay ecosystem.
What this skill does
# NBitcoin The .NET / C# Bitcoin library by Nicolas Dorier. Powers BTCPay Server, NBXplorer, and many enterprise .NET integrations. Repo: `github.com/MetacoSA/NBitcoin`. ## Install ```bash dotnet add package NBitcoin ``` ## Quick example ```csharp using NBitcoin; var network = Network.Main; var key = new Key(); // random var addr = key.PubKey.GetAddress(ScriptPubKeyType.Segwit, network); Console.WriteLine(addr); // bc1q... // Tx var tx = network.CreateTransaction(); tx.Inputs.Add(new TxIn(new OutPoint(...), null)); tx.Outputs.Add(new TxOut(Money.Coins(0.001m), addr)); // PSBT var psbt = PSBT.FromTransaction(tx, network); psbt.AddCoins(prevOuts); psbt.SignAll(ScriptPubKeyType.Segwit, key); var finalTx = psbt.Finalize().ExtractTransaction(); ``` ## Features - Full tx + script support, all output types. - BIP32/39 HD wallets. - PSBT (BIP174). - Taproot, miniscript, descriptors. - HW wallet integration via HWI subprocess. - Lightning (BOLT11) decode. - RPC client. - Custom networks (Bitcoin Cash, Liquid, etc.). ## Companion projects - **NBXplorer** — wallet management on top of NBitcoin. - **BTCPay Server** — uses NBitcoin extensively. ## Use cases - .NET enterprise Bitcoin integration. - BTCPay plugin development. - Windows-native Bitcoin tools. ## Common pitfalls - API surface large; some patterns vary across versions. - Cross-platform: .NET Core for Linux/Mac; otherwise Windows. ## See also - [../../infrastructure/btcpay/SKILL.md](../../infrastructure/btcpay/SKILL.md) - [../../protocol/psbt/SKILL.md](../../protocol/psbt/SKILL.md)
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