rich1.0dr.fred wrotedr.fred (npub1he…ymce6)https://yabu.me/npub1heysg4r5mq354k7n3hlk0wae4c4x6p5kh7qfu38fe5f24s82vvvqxymce6njumphttps://yabu.mecan anyone tell me how to count the number of btc in circulation?