Registration Using Remix

Bridge KIP-7 (fungible token, original token on KLAYTN) to another chain (Ethereum, Polygon, etc...)

This guide is based on the contract address and amount supplied. Take this guide as a reference and type in the exact numbers and address as told.

MetaMask

• Networks

KLAYTN : https://public-node-api.klaytnapi.com/v1/cypress

• Add Network from the networks dropdown if needed

• Open Networks again and select the network you added

Remix IDE

Remix IDE - an online IDE to develop smart contracts.

• Docs

• Download abi files

801B

layer1.abi

Layer 1 means original token platforms (ex. KSP's Layer 1 => KLAYTN)

222B

ft.abi

ft means Fungible Token (ERC-20, KIP-7)

• Load abi files into Remix IDE

• Select ft.abi

• Approve Token

  • Select Deploy & Run Transaction on left bar

  • Select Injected Web3 for Environment

    • For Metamask

    • Check chainID (ex. KLAYTN : 8217)

  • Put your token address and Load Contract (ex. KSP : 0xc6a2ad8cc6e4a7e08fc37cc5954be07d499e7654)

  • Put spender and the amount to be bridged

    • In this case KLAYTN Layer 1 contract : 0x9Abc3F6c11dBd83234D6E6b2c373Dfc1893F648D

    • If your original token is on a chain other than KLAYTN, please refer to the Layer 1 contract addresses

  • Click transact button

• Send Transaction using Metamask

choose edit

edit gas fee

make sure priority fee and fee to 750

• Bridge Token

  • Load the Layer 1 contract referring to the Approve Token step

  • KLAYTN Layer 1 contract : 0x9Abc3F6c11dBd83234D6E6b2c373Dfc1893F648D

  • Get ChainId for toChain (Use MATIC for POLYGON due to predefined bridge rules)

  • Put chainId to check if toChain is a supported chain

  • Put chainId to check the bridge fee to toChain

    • If chainFee is zero, then value set 0

    • if not, you must put chainFee in VALUE. (ether = 10 ** 18 wei)

  • Dropdown depositToken, fill params and click transact

    • token : your token address (ex. KSP : 0xc6a2ad8cc6e4a7e08fc37cc5954be07d499e7654)

    • toAddr : address for receive bridged token

    • amount : amount for bridging (ex. 0.04 KSP = 40000000000000000, decimal = 18)

  • Send Transaction referring to the Send Transaction using Metamask step

  • You can check the bridged token by searching for toAddr in toChain's explorer