The Entropia method: a bowl of 2048 pills, one per BIP39 word. Draw one at random, write the word,
put it back, repeat — 11 draws for a 12-word seed (23 for 24). Then a SeedSigner calculates the valid
final word (coin flip / word selection / all-zeros). Real BIP39 maths in your browser. Learning demo — never for real funds.
1 · Draw pills from the bowl
Seed length
2048 pills · draw with replacement
0 / 11 drawn
2 · Calculate the final word
Draw all pills, then pick how the SeedSigner computes the checksum word.
BIP39 per bitcoin/bips BIP-0039. Final-word calc mirrors SeedSigner. Entropia is a real product by BTC Hardware Solutions. Runs in your browser. Never reuse a real seed.