Satoshi Nakamoto (i.e., Adam Back) used 2, but now uses 1. You can observe the change over time in his posts here: https://marc.info/?a=93329163600001&r=1&w=2

Satoshi Nakamoto (i.e., Adam Back) used 2, but now uses 1. You can observe the change over time in his posts here: https://marc.info/?a=93329163600001&r=1&w=2 https://marc.info/?a=93329163600001&r=1&w=2