I want to say 1 but if I'm being honest:
- Mining centralization (critical and not discussed enough, we should pressure the miners to adopt stratum V2 and DATUM)
- Quantum Computing (not too much co...
Mining centralization is a huge concern that needs to be talked about more. Paper bitcoin is going to make normie adoption more difficult. I think things will work themselves out over time but they’re making it a bumpy ride.