Really cool concept I love the idea of turning the mining race into a betting game, especially since it's built on verifiable Bitcoin data.

Just one suggestion that I think could take BlocksRace to the next level  consider integrating Bitcoin Lightning.

Nowadays, a huge portion of real Bitcoin transactions are happening over Lightning because of its speed and almost zero fees. It would make placing smaller bets (microbets) way more practical
Also, maybe even allow login/registration via Lightning using LNURL-auth.
LNURL-auth is like “Login with Google” or “Sign in with Twitter,” but for Bitcoin without email, passwords, or personal data.
You just click a button, scan a QR code with your Lightning wallet, and boom you’re instantly logged in or registered.

Looking forward to seeing how this evolves  best of luck and I’ll definitely be following the project!