From The Simplest Bitcoin Book by nostr:npub1dpna3xwwddnhhzg9ycpvlcz2ze0jdwm2rf3eqd2lf9leaewtq7tqhw0ef2

A mnemonic on #Bitcoin mechanics - level39's Satoshi #numbers (369 Clock)

- Bitcoin is designed to mine 6 blocks per hour (one block on average every ~10 mins)

24 hrs .. 2+4=6

144 blocks/day .. 1+4+4=9

52560 blocks/year .. 5+2+5+6+0=18 .. 1+8=9

52704 blocks per leap year .. 5+2+7+0+4=18 .. 1+8=9

21 Million coins .. 2+1+0+0+0+0+0+0=3

33 Halvings .. 3+3=6

Difficulty adjusts every 2016 blocks .. 2+0+1+6=9

Block reward halving every 210000th block (~ four years) .. 2+1+0+0+0+0=3

#simple #math