Will it be possible to increase the supply or even make it infinite if someone was able to crack the code?
If there's someone who will be broke the code protocol of Bitcoin, it might change the fundamental principle of what Bitcoin had.
Like:
- Pseudonymous
- Irreversible Transactions
- Open-Source
- Decentralization
- No censorship
- Max supply 21 Million
However, it's theoretically that it could be changed as what said most above but there's a consensus, through hard fork everything will change that should be adopted by the co-developers, users, and the miners the new Bitcoin code. We have now so many Bitcoin forked coins with infinite supply, since Bitcoin is open source and you can modify the code, they can create new coins and copy cat from Bitcoin code but it now a different name.