Does this tool send my seed phrase or shares over the internet?

No. All checksum calculations, Shamir secret sharing recombinations, and key derivations execute entirely in-process within your local browser runtime.

What is the difference between BIP-39 and SLIP-39?

BIP-39 encodes entropy into a single sequence of 12 to 24 words, while SLIP-39 splits master entropy into a threshold set of shares (e.g., 2-of-3) using Shamir's Secret Sharing and RS1024 checksums.

Can I convert between 20-word and 33-word SLIP-39 shares and BIP-39?

Yes. 20-word SLIP-39 shares encode 128 bits of entropy (equivalent to 12-word BIP-39 phrases), while 33-word shares encode 256 bits of entropy (equivalent to 24-word BIP-39 phrases).

How are Electrum v1 and v2 seeds handled?

Electrum v2 seeds are validated using HMAC-SHA512 version prefixes, while legacy Electrum v1 seeds are detected against the historical 1626-word dictionary to derive direct SHA-256 private keys.

Which derivation path is used for the generated addresses?

The bridge derives the master BIP-32 extended key (xprv/xpub) and calculates the first five legacy Bitcoin P2PKH receiving addresses using the standard m/44'/0'/0'/0/0 through m/44'/0'/0'/0/4 path.

Elysia Tools

Navigation

Converter

SLIP-39 / BIP-39 / Electrum Seed Bridge

Detects, validates and bridges crypto wallet seeds offline: BIP-39 checksum and entropy recovery, SLIP-39 Shamir share parsing with RS1024 checksum and single-group recombination, Electrum v2 version-tag validation and legacy v1 detection — then derives the BIP-32 master xprv/xpub and the first five m/44′/0′/0′/0 addresses, and converts entropy both ways between BIP-39 mnemonics and single-group SLIP-39 share sets.

Details

What this tool helps you do

Paste one seed: a BIP-39 mnemonic (12/15/18/21/24 words), SLIP-39 shares (one per line; 20 or 33 words each), an Electrum v2 seed, or a legacy Electrum v1 seed from the old 1626-word list — or hex entropy in entropy mode. The engine validates the checksum (BIP-39 SHA-256, SLIP-39 RS1024 Reed-Solomon, Electrum HMAC-SHA512 version tag), recovers the entropy (128/160/192/224/256 bits), derives the BIP-32 master key and 5 receiving addresses (m/44′/0′/0′/0/0..4, P2PKH), and bridges: BIP-39 entropy → a fresh single-group T-of-N SLIP-39 share set, SLIP-39 master secret → equivalent BIP-39 mnemonic. Electrum v1 seeds derive their SHA-256 WIF directly. Everything is computed in-process with no network, disk or logging — but never paste a funded seed into any web tool; use offline copies for real migrations.

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Samples

Examples that match this tool

Continue with connected tools and hubs

mnemonicInput: "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about" passphrase: "TREZOR" mode: "bip39" slip39Threshold: 2 slip39Shares: 3 slip39IterationExponent: "0"

SLIP-39 / BIP-39 / Electrum Seed Bridge

What this tool helps you do

Run this tool

Examples that match this tool

Continue with connected tools and hubs

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Converting a 12-word BIP-39 seed to a 2-of-3 SLIP-39 Shamir backup

2. Recombining SLIP-39 shares to recover a BIP-39 mnemonic

FAQ

Web Image Processing Python Samples

Android Image Processing Java Samples

Android Image Processing Kotlin Samples

Web Image Processing Rust Samples

Crontab Converter

Human Size Converter

AI Domain Name Idea Generator

APNG IDAT/fdAT Chunk, Streaming Deflate Replay and Disposal Method Frame-Timing Analyzer