CAKE 跨链

PancakeSwap uses LayerZero OFT for Cross Chain CAKE Bridging

Contract info

CAKE Bridging Contract

Contract name: CakeProxyOFT Contract address: 0xb274202daBA6AE180c665B4fbE59857b7c3a8091

View on BscScan

Example of CAKE bridging to Aptos

sendFrom

    function sendFrom(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, uint _minAmount, LzCallParams calldata _callParams) external payable;

Name

Type

Description

_from

address

From address. This should be the address calling the CakeProxyOFT

_dstChainId

uint16

108 for Aptos mainnet

_toAddress

bytes32

The destination address on Aptos

_amount

uint256

Amount of CAKE in WEI. Please note that amounts less than 1e-8 will get dusted

_minAmount

uint256

Minimum receiving amount. We do not charge any fee in CAKE. But this should not be larger than _amount after being rounded down to 8 decimals.

_callParams

tuple

A set of call parameters used to define bridging behaviours. Continue reading for more detail.

sendFrom is a payable function. You will need to pay around 0.005-0.01 in BNB for destination airdrop gas fees. This value will vary based on the price of BNB/APT.

Please note that if you define extra gas being airdropped to your destination address, you will need to increase this number or tx will revert with not enough natives for fees

How to form `_callParams`

{
    refundAddress,
    zroPaymentAddress,
    adapterParams
}

Name

Type

Description

refundAddress

address

Excess fee (BNB) will be returned to this address

zroPaymentAddress

address

0x0000000000000000000000000000000000000000

adapterParams

bytes

A set of parameters to define destination gas airdropping. Continue reading for more detail.

How to form `adapterParams`

{
    version,
    dstGasLimit,
    dstNativeGasTransferAmount,
    dstNativeGasTransferAddress
}

Name

Type

Description

version

uint16

Default is 2

dstGasLimit

uint

Default is 200000

dstNativeGasTransferAmount

uint

Amount destination native gas token to airdrop. Use 0 if you don't need the bridge to convert BNB and airdrop you APT

dstNativeGasTransferAddress

bytes

The destination address that receives native gas tokens on destination chain

const adapterParams = utils.solidityPack(
    ["uint16", "uint", "uint", "bytes"],
    [2, 200000, 0, "0xYourAptosAddress"]
)

Utilities

Audits

OtterSec's PancakeSwap CAKE OFT (Bridging) security audit

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