EVM Redeem

Redeem BTC.b to native BTC.

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Overview

The EVM Redeem action burns BTC.b on an EVM chain and releases native BTC to your Bitcoin wallet. This is the opposite operation to BTC Deposit.

Flow: BTC.b (EVM) → BTC (Bitcoin)

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Basic Usage

import { createLombardSDK, Chain, AssetId } from '@lombard.finance/sdk';
import { config } from './lib/lombard';

const sdk = createLombardSDK(config);

const redeem = sdk.chain.evm.redeem({
  assetIn: AssetId.BTCb,
  assetOut: AssetId.BTC,
  sourceChain: Chain.ETHEREUM,
  destChain: Chain.BITCOIN_MAINNET,
});

await redeem.prepare({
  amount: '0.1',
  recipient: 'bc1q...', // Bitcoin address
});

const result = await redeem.execute();
// result.txHash: '0x...'

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Parameters

Redeem Options

Parameter	Type	Required	Description
assetIn	AssetId	Yes	Input asset (AssetId.BTCb)
assetOut	AssetId	Yes	Output asset (AssetId.BTC)
sourceChain	Chain	Yes	EVM chain where BTC.b is held
destChain	Chain	Yes	Bitcoin network (BITCOIN_MAINNET or BITCOIN_SIGNET)

Prepare Parameters

Parameter	Type	Required	Description
amount	string	Yes	Amount of BTC.b to redeem
recipient	string	Yes	Bitcoin address to receive BTC

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Status Flow

IDLE → READY → COMPLETED
				     ↓
  (burning BTC.b on EVM, releasing BTC on Bitcoin)

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