We need more chip makers and to open up these systems more.
How centralized is Bitcoin mining regarding the providers of the hardware? Do people care when buying hardware?
People speculate a lot about how much money it would take to arm a 51% attack but rarely do I see people worry about that money coming from trusting customers.
The currently biggest producer of Bitcoin mining hardware - BitMain - set precedence for a kill switch https://bitcointalk.org/index.php?topic=1888573.0 that if present could be used to "incentivize" miners to follow their policy decisions - honor blacklists for example.
How well are we protected against miners activating such a kill switch after some specific activation date? I assume they are closed source, so it would be hard to detect before a triggering date.
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