Clearly the BIP that established the 21M coin limit, BIP42 ;)
Wait, what? Satoshi originally programmed for unlimited coins?
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Yeah, the halving was implemented as a bitshift that would happen every 210,000 blocks, but after 64 shifts, it would start over and issue a whole ’nother 21M coins—every ~256 years. Now it stops after one issuance. ;)
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TIL about that. Nice to know, good BIP too.
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