Multi-Chain Key Generator
Generate keys and addresses for multiple blockchains from a single recovery phrase. Your keys never leave your browser.
How Multi-Chain Wallets Work
A multi-chain wallet generates keys and addresses for different blockchains from a single recovery phrase (mnemonic). This is possible because of BIP-39, BIP-32, and BIP-44 standards that define hierarchical deterministic (HD) key derivation.
The BIP-39 Mnemonic Standard
BIP-39 generates a human-readable 12 or 24-word phrase from entropy. This phrase is the root of all keys — every blockchain address is deterministically derived from it. Lose this phrase and you lose access to all your wallets across every chain.
Derivation Paths (BIP-44)
Each blockchain uses a specific derivation path to generate keys from the master seed. The path format is m/purpose'/coin_type'/account'/change/address_index:
- Ethereum: m/44'/60'/0'/0/0
- Bitcoin: m/84'/0'/0'/0/0 (Native SegWit)
- Solana: m/44'/501'/0'/0'
- Cosmos: m/44'/118'/0'/0/0
Different Curves for Different Chains
Not all blockchains use the same cryptography. Ethereum, Bitcoin, and Cosmos use secp256k1 (ECDSA). Solana uses Ed25519 (EdDSA). Polkadot uses Sr25519 (Schnorr signatures). This is why some chains can share the same private key but others require different derivation methods.
Frequently Asked Questions
▶ Is it safe to use this tool?
Yes — all key generation happens 100% in your browser using the Web Crypto API. Your mnemonic and private keys never leave your device. However, never paste a mnemonic from a wallet that holds real funds into any online tool.
▶ Can I use one mnemonic for all blockchains?
Yes. BIP-44 defines standard derivation paths for each blockchain. A single mnemonic can generate keys for Ethereum, Bitcoin, Solana, Cosmos, and many other chains. Each chain uses its own derivation path, so the addresses are different but all recoverable from the same phrase.
▶ What is a derivation path?
A derivation path (e.g., m/44'/60'/0'/0/0) tells the HD wallet algorithm which branch of the key tree to use. Think of it like a file path — different paths lead to different keys, but all originate from the same root (your mnemonic seed).
▶ How is the Solana address derived?
Solana uses Ed25519 signatures with SLIP-0010 hardened-only derivation at m/44'/501'/0'/0'. This tool performs that derivation directly in your browser, so the address matches what Phantom, Solflare and the Solana CLI show for the same phrase.
About the Multi Chain Keys
Generate keys and addresses for Ethereum, Bitcoin, Solana, and Polkadot from a single BIP39 mnemonic phrase.
Enter a seed phrase to derive addresses across multiple blockchains. Uses proper BIP32/BIP44 derivation paths for each chain.
How to use
- Enter or generate a BIP39 mnemonic.
- Select the blockchains you need.
- Copy the derived keys and addresses.
Frequently Asked Questions
Is it safe to enter a real mnemonic? ▾
This tool runs entirely in your browser and never transmits data. However, best practice for real funds is a hardware wallet. Use test mnemonics for development.