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Overview

The /send command executes a complete private transfer: it deposits SOL from your wallet into Privacy Cash, generates a zero-knowledge proof, and withdraws to your recipient—all in one flow.

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How it works

1

Choose amount

You can select from preset buttons (0.1, 0.25, 1 SOL), enter a custom amount, or use the MAX button to send your entire withdrawable balance (minus fees).
2

Enter recipient

Provide the recipient’s Solana wallet address. The bot validates the format and checks against the blocklist if configured.
3

Confirm transfer

Review the details and confirm. The bot will:
  1. Deposit from your active Privy wallet to Privacy Cash
  2. Generate the zero-knowledge proof and note hash
  3. Submit the withdrawal to the recipient
  4. Log the transaction in Supabase

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Amount options

OptionDescription
Preset buttonsQuick-select common amounts (0.1, 0.25, 1 SOL)
Custom amountType any amount up to your available balance
MAXAutomatically calculates max sendable (balance - fees)
Privacy Cash charges fees for deposits and withdrawals. The MAX option accounts for these fees automatically.

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Recipient validation

The bot validates recipient addresses by:
  • Checking the Solana address format (base58, 32-44 characters)
  • Optionally checking against the blocked_addresses table in Supabase
  • Rejecting invalid or blocked addresses with a clear error message

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Transfer lifecycle

  1. Deposit: SOL moves from your Privy wallet to Privacy Cash
  2. Proof generation: Privacy Cash SDK creates the zero-knowledge proof
  3. Withdrawal: Funds are withdrawn to the recipient address
  4. Logging: Transaction details saved to private_transfers table
If any stage fails, the bot will:
  • Surface a clear error message
  • Persist the error to transfer_errors for debugging
  • Provide a “Retry” button to replay from the failed stage

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Fees

Privacy Cash charges fees for:
  • Depositing into the privacy pool
  • Generating zero-knowledge proofs
  • Withdrawing to recipients
These fees are automatically deducted from your balance. The exact fee structure depends on Privacy Cash’s current pricing.

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Troubleshooting

Check your balance with /balance. Remember that fees are deducted, so you need slightly more than the send amount.
Use the “Retry” button if provided, or contact support with the transaction ID.
Double-check the address format. Solana addresses are base58-encoded and typically 32-44 characters long.