"Ethan Heilman, Avihu Levy, Victor Kobolov and I have developed a scheme which proves this suspicion was well founded. Our scheme, ColliderScript, enables covenants on Bitcoin today, under fairly reasonable cryptographic assumptions and at a probable cost around 50 million dollars per transaction (plus some hardware R&D)."
"Despite the outlandish costs to use ColliderScript, setting it up is very cheap, and doing so (alongside an ordinary spending mechanism, using Taproot to separate the two) just might save your coins in case a quantum computer shows up out of nowhere and blows up the system."
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