A proposal to change the basic unit of Bitcoin has once again sparked the "Sats" vs. "bits" debate.

On April 23, Bitcoin developer John Carvalho proposed Bitcoin Improvement Proposal 177, which aims to eliminate satoshis as the basic unit of Bitcoin and divide the 21 million Bitcoin into 21 quadrillion units.

Previously, in 2017, developer Jimmy Song proposed creating "bits" to represent one millionth of a Bitcoin. Carvalho believes that this solution did not eliminate complexity. Block CEO Jack Dorsey and others support the change. In an X post on May 18, he stated that satoshis or sats are too confusing for beginners. Swan Bitcoin CEO Cory Klippsten and others oppose the change, saying that people can understand satoshis in Bitcoin, just like understanding cents in the dollar.

In addition, Bitcoin founder Satoshi Nakamoto once stated that the unit display method could be changed. Since the Taproot upgrade in November 2021, the Bitcoin network has not implemented any new improvement proposals.