Posts tagged #Seed
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The numbers of the Coldcard incident, verified at home
Between July 30 and August 1, 2026, thousands of addresses created with Coldcard Mk2 and Mk3 wallets, whose seeds came from a faulty generator, were drained. The incident's numbers recomputed at home with a Bitcoin node and nodsig's open artifacts: 1,366 BTC from 4,560 addresses, the rules that isolate the groups, the comparison with Perera and Galaxy, where the funds are.
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How big is «practically impossible»?
«It is practically impossible for someone else to generate your own seed» sounds like a way out, and anyone who does not buy it deserves an answer rather than reassurance. How big the space a Bitcoin wallet's seed comes from really is, why the right question is not whether someone guesses yours but whether two identical seeds will ever turn up among all the seeds ever generated, what it would cost a perfect machine just to count them, what difference twelve words instead of twenty-four actually makes, and what a passphrase adds. The fragile point is not the coincidence but the birth, which is to say the generator: the Android episode of 2013 and the Coldcard defect of July 2026.