There could soon be many more Bitcoins than today

If there is one thing that does not seem likely to change in Bitcoin, it is the limit of 21 million units, set by Satoshi Nakamoto right from the launch of the blockchain in 2009, a rule that all users and nodes of the network accept and enforce.

For now, it seems difficult to imagine this figure evolving, even if some argue that a future lack of transaction fees would pose a security problem, pushing users to consider removing this limit to reintroduce a fixed reward in BTC per block.

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Although the security issue remains to be demonstrated, Nakamoto's genius lies precisely in a consensus capable of adapting to mining power to secure the blockchain, some already wish to modify the terminologies established by Satoshi and those adopted over time.

BIP 177 proposes to change the base unit: to change the display from 21 million Bitcoins to 2.1 quadrillion, by renaming each fraction of 0.00000001 BTC to "Bitcoin".