Seed Tool

v2.1.0

This page offers a space for bitcoiners to experiment and learn how bitcoin wallets are generated using different sources of entropy (randomness). The page also offers many other seed related functionalites, some of which are outlined below. Just like the tools and libraries used in its creation, this tool is also completely free and open source. If you find this page useful, consider donating some sats to the lead developer SuperPhatArrow.

Warning

NEVER use the online version of this tool to create or interact with seeds used to manage real bitcoin. While there is nothing in this tool that collects private information or sends it anywhere, there may be other software on your device that does. If the tool detects a network connection, it will display a network symbol in the top corner of the screen. To use this tool offline, use the link below to download the page HTML file and open in any web browser on an offline device or an amnesic operating system like Tails.

Usage

Some common use cases for this tool include:-

Learning how entropy is used to derive wallet components
Generating seeds via dice rolls, coin flips or playing cards
Verifying entropy inputs (dice rolls etc) applied to external wallets or signers
Generating BIP85 child seeds (or check those generated by a signing device)
Generating BIP47 payment codes and their corresponding PayNym avatars
Generating BIP47 addresses between any two payment codes
Verifying wallet address generation from a given seed/passphrase combination
Testing for a forgotten/incorrect passphrase (if you know a receive address)

🤖 Generate a cryptographically strong random mnemonic
📥 Enter your own (previously generated) mnemonic
🎲 Enter in your own entropy

Generate a Cryptographically Random Mnemonic of words.

Warning! Do not try to make up your own mnemonic, you are not as random as you think!

Mnemonic Length

NOTE: You can enter your BIP39 Passphrase below.

Warning! Entropy is an advanced feature. Your mnemonic may be insecure if this feature is used incorrectly.

Click on the orange button above to learn more.

Enter your own entropy:

Time to crack (zxcvbn using Filtered Entropy):

Event count:

Entropy type:

Avg Bits Per Event:

Raw Entropy Words:

Total Bits:

Filtered Entropy:

Raw Binary:

Binary Checksum:

Word Indexes:

Mnemonic Length:

Entropy method:

BIP32 Root Key

BIP32 Root Fingerprint

BIP32 Root Wallet Import Format (WIF)

BIP39: Mnemonic code for generating deterministic keys

BIP39 Mnemonic (English)

Compact SeedQR ⓘ

Seed QR is a QR code used to scan your seed words into a hardware signer. It does not include your passphrase so that if someone finds the qr code, they don't have access to your funds.

The fingerprint allows you to check the QR code matches your seed. Once you have added a passphrase, the seed changes and so does the fingerprint so it is correct that the seedQR fingerprint will be different to your wallet fingerprint after you enter your passphrase.

BIP39 Passphrase (recommended)

No passphrase entered!

BIP39 Seed

Select a Bitcoin Tool

Seed 2 of 2 ⓘ

Seed QR is a QR code used to scan your seed words into a hardware signer. It does not include your passphrase so that if someone finds the qr code, they don't have access to your funds.

XOR Result ⓘ

Seed QR is a QR code used to scan your seed words into a hardware signer. It does not include your passphrase so that if someone finds the qr code, they don't have access to your funds.

Calculate the last word of a word seed.

Some user entropy is required. It has already been generated randomly, however you can toss a coin for these bits where, for example, "heads" is zero and "tails" is one.

BIP32: Hierarchical Deterministic 'Legacy' Wallets

BIP86: Key Derivation for Single Key P2TR Outputs

BIP32 Derivation Path

m/0'/0'

BIP32 Extended Private Key

BIP32 Extended Public Key

Note these addresses are derived from the BIP32 Extended Key

Display addresses from index to index

Use paynym.is online directory (won't work offline) Network Selection

My Details

Payment Code

Notification Address

Notification Public Key (HEX)

Notification Private Key (WIF)

Counterparty Details

Payment Code

Loaded Seed Master Extended Public Keys Native Segwit

Wrapped Segwit

Input Cosigners and Threshold Paste each Ypub/Zpub of all cosigners onto a new line: Threshold (number of signatures required)

Address Type

Display addresses from index

Warning! This is an advanced feature and should only be used if you understand what it does. Click on the button above to learn more.

BIP85 Application

BIP85 Mnemonic Length

BIP85 Bytes

BIP85 Index

BIP85 Child Key

Compact SeedQR ⓘ

Seed QR is a QR code used to scan your seed words into a hardware signer. It does not include your passphrase so that if someone finds the qr code, they don't have access to your funds.

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Seed Tool

v2.1.0

Warning

Usage

BIP39: Mnemonic code for generating deterministic keys

BIP32: Hierarchical Deterministic 'Legacy' Wallets

BIP44: Multi-Account Hierarchy for Deterministic 'Legacy' Wallets

BIP49: Derivation scheme for P2WPKH-nested-in-P2SH 'Nested Segwit' accounts

BIP84: Derivation scheme for P2WPKH 'Native Segwit' accounts

BIP86: Key Derivation for Single Key P2TR Outputs

BIP141: Segregated Witness (Consensus layer)

My Details

Counterparty Details

Libraries & Tools