MOST BRIDGE

This project consists of 4 repos:

• most-bridge-backend - canister for minting and withdrawing ckSUI tokens
• most-bridge-helper - generating sui address from base64 public key
• most-ck-sui-helper - sui smart contract for depositing SUI tokens to minter
• most-bridge-api - check here https://github.com/4-point-0/most-bridge-api

Setup

• follow https://internetcomputer.org/docs/current/developer-docs/getting-started/install/ instructions to install necesarry tools
• for local testing deploy most-ck-sui-helper to local, devnet or testnet
• update constants SUI_PACKAGE_ID and SUI_MODULE_ID deploy canister from most-bridge-backend locally, get public key and convert it to SUI_ADDRESS using most-bridge-helper
• set minter address with setMinterAddress method on ckSuiHelper.move smart contract

Bridge functionalities

1. Deposit

Use SUI cli script:

sui client call --package <CONTRACT_ID> --module ckSuiHelper --function deposit --args <AMOUNT> <COIN_ID> <PRINCIPAL_ADDRESS_STRING> <MINTER_ID>

2. Withdrawal

Export identity in cli:

dfx identity use default
export DEFAULT=$(dfx identity get-principal)

Approve amount for withdrawal:

dfx canister call --identity default ck_sui_ledger_canister  icrc2_approve "(record {spender= record {owner = principal \"${CANISTER_MINTER_ID}\";};amount = ${AMOUNT}: nat;})" --network ic

Withdraw

dfx canister call minter withdraw "(record {
  amount = \"${AMOUNT}\";
  recipient = \"${RECIPIENT_SUI _ADDRESS}\"
})"