README.md

token-bind-tool

Tool to bind BEP2 tokens and BEP20 tokens

Compile

Compile token bind tool:

make build

Preparation for binding tokens

1. Prepare a MacOS computer.

2. Connect ledger to your computer and open Binance Chain App

3. Import bep2 token owner key:

   3.1 From ledger

   bnbcli keys add bep2TokenOwner --ledger --index 0

   3.2 From mnemonic

   bnbcli keys add bep2TokenOwner --recover

4. Generate temp account:

   ./build/token-bind-tool initKey --network-type mainnet

   Example response:

   Temp account: 0xde9Aa1d632b48d881B50528FC524C88474Ec8809, Explorer url: :  https://bscscan.com/address/0xde9Aa1d632b48d881B50528FC524C88474Ec8809
   

5. Transfer 1 BNB to the temp account.

   5.1 Cross chain transfer

    bnbcli bridge transfer-out --expire-time `expr $(date +%s) + 3600` \
    --chain-id Binance-Chain-Tigris --from {keyName} --node http://dataseed4.binance.org:80 \
    --to {temp account address} --amount 100000000:BNB

   Example command:

   bnbcli bridge transfer-out --expire-time `expr $(date +%s) + 3600` \
   --chain-id Binance-Chain-Tigris --from bep2TokenOwner --node http://dataseed4.binance.org:80 \
   --to 0xde9Aa1d632b48d881B50528FC524C88474Ec8809 --amount 200000000:BNB

   5.2 You can also transfer BNB from other Binance Smart Chain account.

6. Prepare BEP20 contract code

   You can refer to BEP20 Template and modify it according to your own requirements. Compile your contract with Remix and get contract byte code:

7. Edit script/config.json

   {
     "contract_data": "",
     "bep20_symbol": "",
     "bep2_symbol": "",
     "final_bep20_owner": ""
   }

   Fill contract byte code to contract_data, fill BEP20 contract symbol to bep20_symbol, fill BEP2 token symbol to bep2_symbol and fill your owner account to final_bep20_owner. Once the bind is success, the BEP20 token ownership will be transfer to your owner account.

Bind BEP2 token with BEP20 token

```shell script
./bind {network type} {bep2TokenOwnerKeyName} {peggyAmount} {bep2 token symbol} {final token owner} {path to bnbcli or tbnbcli}
```

Example command:
```shell script
./bind.sh mainnet bep2TokenOwner 0 ETH-2C2 0xaa25Aa7a19f9c426E07dee59b12f944f4d9f1DD3 $HOME/go/bin/bnbcli
```