Solana Deposit

The BTC Deposit action converts native Bitcoin to BTC.b (wrapped Bitcoin) on Solana. Users send BTC to a generated deposit address, and BTC.b gets minted to their Solana wallet after confirmation.

Key Differences from EVM Deposits

No EIP-712 authorization — Solana deposits skip the fee authorization signature step, using wallet signing for address confirmation during generateDepositAddress() instead
Address format — Recipients must provide valid Solana public keys in base58 encoding (32 bytes), not hexadecimal addresses

Basic Usage


import { createLombardSDK, Chain, AssetId } from '@lombard.finance/sdk';
 
const config = createConfig({
  env: Env.testnet,
  providers: {
    solana: () => window.solana,
  },
});
 
const sdk = createLombardSDK(config);
 
const deposit = sdk.chain.btc.deposit({
  destChain: Chain.SOLANA_DEVNET,
  assetOut: AssetId.BTCb,
});
 
await deposit.prepare({
  amount: '0.01',
  recipient: 'SolanaPublicKey...',  // base58 Solana address
});
 
const depositAddress = await deposit.generateDepositAddress();

Current Availability

Currently available on testnet: BITCOIN_SIGNET to SOLANA_DEVNET (stage and dev environments only), producing BTC.b tokens.