A simple approach would be:
Take a snapshot of holders from a SOL meme coin, then let eligible users claim a BTC ecosystem token through a website.
Basic flow:
Snapshot SOL holdersUse Helius / Birdeye / Solscan APIs
Record wallets and balances
Build a claim websiteUsers connect their SOL wallet
System checks if they qualify
Users bind a BTC walletPrefer Taproot wallets like Xverse or Unisat
User signs with their SOL walletThis proves wallet ownership