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hd-wallets

Derive Ethereum accounts from BIP-39 mnemonic seed phrases in C# and .NET.

2.3k|744|Updated Nov 23, 2015
Search Tags:#csharp#Ethereum#HD wallet#mnemonic#bip-39#nethereum#derivation path
One-click install
npx skills add https://github.com/Nethereum/Nethereum --skill hd-wallets
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: hd-wallets
Source: https://github.com/Nethereum/Nethereum/tree/main/plugins/nethereum-skills/skills/hd-wallets
Command: npx skills add https://github.com/Nethereum/Nethereum --skill hd-wallets

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires Nethereum.HDWallet, Nethereum.Accounts, NBitcoin.

What problem does it solve?

Managing many Ethereum accounts from separate private keys is error-prone and hard to back up. This Skill shows how to generate and restore hierarchical deterministic (HD) wallets in .NET, deriving unlimited accounts from a single mnemonic seed phrase using standard BIP-32/BIP-39/BIP-44 derivation paths.

Core Features & Use Cases

  • Full HD Wallet (Nethereum.HDWallet): NBitcoin-based implementation supporting mnemonic generation, restoration, custom derivation paths (MetaMask, Ledger/Electrum), extended public keys for watch-only wallets, and key caching.
  • Light HD Wallet (MinimalHDWallet): Zero-dependency implementation built into Nethereum.Accounts using only System.Security.Cryptography, targeting net6.0+ for mobile, embedded, and WASM scenarios.
  • Use Case: A wallet application needs to generate a 12-word recovery phrase for a new user, then derive their first 10 Ethereum addresses and sign transactions with account index 0 on mainnet.

Quick Start

Use the hd-wallets skill to generate a new 12-word mnemonic and derive the first five Ethereum addresses in C#.

Frequently Asked Questions about hd-wallets

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I derive Ethereum accounts from a mnemonic seed phrase in C#?▼

Install Nethereum.HDWallet and create a Wallet object from the mnemonic string, then call GetAccount(index, chainId) to get a signing account or GetAddresses(count) to list derived addresses. The default derivation path is m/44'/60'/0'/0/x, matching MetaMask.

How to generate a 12-word BIP-39 mnemonic in .NET?▼

Use new Wallet(Wordlist.English, WordCount.Twelve) from Nethereum.HDWallet and read wallet.Words, or call Bip39.GenerateMnemonic(12) from the MinimalHDWallet API included in Nethereum.Accounts with no extra dependencies.

Nethereum.HDWallet vs MinimalHDWallet: which should I use?▼

Nethereum.HDWallet uses NBitcoin, supports extended public keys and key caching, and targets net452+, suiting full wallet applications. MinimalHDWallet has zero dependencies, targets net6.0+, and fits embedded, mobile, and WASM scenarios.

Does Nethereum support Ledger and Electrum derivation paths?▼

Yes. Pass Wallet.ELECTRUM_LEDGER_PATH (m/44'/60'/0'/x) when constructing the Wallet to match Ledger and Electrum derivation, or supply any custom path string. The default path matches MetaMask, TREZOR, and MEW.

Can I create a watch-only Ethereum wallet from an xPub key?▼

Yes. Call GetMasterExtPubKey() on a full Wallet to export the extended public key, then construct a PublicWallet from that xPub and call GetAddresses(count) to derive addresses without any private keys.

What are the limitations of MinimalHDWallet?▼

MinimalHDWallet does not support extended public keys (xPub) or key caching, and it requires net6.0 or later. For watch-only wallets or older frameworks like .NET Framework 4.5.2, use the NBitcoin-based Nethereum.HDWallet package instead.

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