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Feb 1, 2020 at 2:01 comment added Chan-Ho Suh The top three version bits being 001 doesn't have to do with the number 2 in binary. It just means the top byte has a value from 32 to 63, which is why in hex, nVersion starts with 0x2 or 0x3. In fact, the last version before BIP9 was 4. BIP9 actually says the top three bits can be 010 or 011; these are reserved for future upgrades. (the top bit has to be 0 since nVersion is signed).
Aug 17, 2017 at 11:57 comment added inersha I know it has taken a while, but thanks to your help I was able to create a page that breaks the nVersion field down in to bits to show the different signals: learnmeabitcoin.com/browser/block/version/20000002. Hopefully anyone else reading this may find it useful.
Jan 1, 2017 at 20:23 vote accept inersha
Jan 1, 2017 at 13:51 history edited Murch CC BY-SA 3.0
added 71 characters in body
Jan 1, 2017 at 13:42 history edited Murch CC BY-SA 3.0
removed the mention of voting
Jan 1, 2017 at 13:14 comment added Pieter Wuille They're not actually votes though. Any majority of miners can start enforcing a new rule - they don't need to indicate it in blocks, or even tell anyone about it. What version bits does is providing a way to signal readiness, so that a safe and coordinated transition point can be found.
Dec 31, 2016 at 13:36 history answered Murch CC BY-SA 3.0