By Isaac • October 15, 2026 7:11 pm •
Bitcoin’s quantum-computing debate is moving beyond a simple question of whether the network can adopt stronger signatures. The harder question is what happens to coins that do not move before older spending rules are restricted.
A new CryptoSlate analysis puts that conflict in unusually concrete terms. It models a hypothetical future attacker recovering keys for 50,000 early outputs holding 2.5 million BTC, calculates their approximate transaction weight against Bitcoin’s block limits, and distinguishes that hypothetical capacity from the separate questions of miner inclusion, fees, public-key exposure, actual ownership and whether any of those coins are truly lost.
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Under the article’s assumptions, that sweep could fit inside ten Bitcoin blocks. The calculation does not claim that such
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