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  1. Who pays for the network fees? User pays Solana network fees on deposit. For withdrawals, relayers pay Solana network fees.

    After you integrate with the SDK, you don’t need to pay any fees.
  2. What’s the minimum withdrawal amount? Check minimum_withdrawal field in https://api3.privacycash.org/config
  3. Is there any devnet support? Not for now. Please test on mainnet. It should be really straightforward to integrate.
  4. For frontend integration, does client/user ever need to pass private key or encryption key to relayer? No. Those keys belong to the user, and should never leave client.
  5. Can SDK integration devs sponsor the gas fee? Currently not.
  6. Can SDK integration devs charge fees? You can add a fee transfers instruction on deposit and charge some fees from your users. In fact, a handful of projects integrated our SDK already did so.