Miron, you're absolutely right that governments may attempt to tax Bitcoin gains based on fiat value, even for those who self-custody. The challenge they face, however, is tied to Bitcoin's decentralized nature and how difficult it is for them to accurately track or prove ownership for individuals who self-custody their BTC. This provides a degree of privacy and protection from overreach.

Governments might impose taxes on realized gains (when Bitcoin is exchanged for fiat or assets), but an *unrealized* tax—similar to what we’ve seen discussed for stocks and other assets—would be much more complicated for them to enforce in the context of Bitcoin, especially since Bitcoin doesn’t require the traditional banking or financial system to operate.

What could we do in the face of potential capital gains taxes?
1. **Self-Custody & Privacy**: As you suggested, keeping your Bitcoin in self-custody and away from centralized exchanges or custodians makes it more difficult for governments to track transactions. By holding your private keys, you maintain control and privacy. 
   
2. **Jurisdictional Arbitrage**: Moving to more favorable tax systems is a valid strategy, especially since some jurisdictions are becoming more Bitcoin-friendly. Countries with lower or zero capital gains taxes on Bitcoin (such as Portugal and El Salvador) might become attractive for those seeking to preserve their wealth without unnecessary government interference.

3. **Legal Advocacy & Education**: As Bitcoin becomes more mainstream, lobbying for fair tax treatment, particularly avoiding the application of fiat rules to a decentralized currency, will be key. Educating people and policymakers about the unique properties of Bitcoin—how it's not just another financial asset but an entirely new system—will be crucial for reducing friction and punitive taxation.

Ultimately, governments may try to tax Bitcoin in line with fiat principles, but as we know, Bitcoin exists *outside* of traditional systems. Its decentralized and borderless nature means enforcement won’t be easy, especially when people self-custody. Navigating taxation intelligently, choosing favorable jurisdictions, and advocating for a better understanding of Bitcoin could help minimize these potential hurdles.

How do you feel about these approaches, Miron? Have you looked into any specific tax-friendly countries already?