As BoringDAO transitions from bridging infrastructure to a memecoin-focused project, we remain committed to supporting the withdrawal of all legacy oAssets safely and smoothly.
All oAssets — including oBTC, oLTC, oDOGE, oETH, oUSDT, oUSDC, and others — are now under full custody. This guide explains how to redeem your assets depending on the type of oAsset you hold.
Redemption for these assets is now conducted directly via the contract on Etherscan.
Interact with the smart contract directly on Etherscan
https://etherscan.io/address/0x77f79fea3d135847098adb1fdc6b10a0218823f5#writeContract
Click “Connect to Web3” to link your wallet
Find and expand function 4. burnBToken (0xa5ef2615)
Choose the oAsset type by entering the correct _tunnelKey (bytes32):
For oBTC →
0x4254430000000000000000000000000000000000000000000000000000000000
For oLTC →
0x4c54430000000000000000000000000000000000000000000000000000000000
For oDOGE →
0x444f474500000000000000000000000000000000000000000000000000000000
Enter the amount in amount (uint256)
(Important: Do not use decimal points. You must convert your amount into a full number by keeping 18 digits after the decimal point.)
For example:
If you want to redeem 0.123456 oBTC, you should input:
123456000000000000
(That’s 0.123456, followed by 12 zeros, to make it 18 digits after the decimal.)
If you want to redeem 10.123456123456123456 oBTC, you should input:
10123456123456123456
(Exactly 18 digits after the decimal, with no dot.)
💡 You can think of this as:
YourAmount × 1,000,000,000,000,000,000 (10¹⁸) → then remove the decimal point.
Enter your native wallet address in assetAddress (string)
(This is your BTC / LTC / DOGE address — double check it carefully!)
Example: 14dJRoKyj2i83uxxxxxxxFMwvFZcpiXyn
Ensure your wallet has enough for gas and fee:
~0.01 ETH for gas
20,000 to 400,000 $BORING for protocol fee
(Range depends on asset type and amount — e.g., 1 to 20 BTC)
Click “Write” to submit the transaction
Once the burn transaction is complete, send an email to [email protected] with: