# Messages Users can submit various messages to the evmutil module which trigger state changes detailed below. ## MsgConvertERC20ToCoin `MsgConvertCoinToERC20` converts a Kava ERC20 coin to sdk.Coin. ```protobuf service Msg { // ConvertERC20ToCoin defines a method for converting Kava ERC20 to sdk.Coin. rpc ConvertERC20ToCoin(MsgConvertERC20ToCoin) returns (MsgConvertERC20ToCoinResponse); } // MsgConvertERC20ToCoin defines a conversion from Kava ERC20 to sdk.Coin. message MsgConvertERC20ToCoin { // EVM 0x hex address initiating the conversion. string initiator = 1; // Kava bech32 address that will receive the converted sdk.Coin. string receiver = 2; // EVM 0x hex address of the ERC20 contract. string kava_erc20_address = 3; // ERC20 token amount to convert. string amount = 4 [ (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Int", ]; } ``` ### State Changes - The `EnabledConversionPairs` param from `x/evmutil` is checked to ensure the conversion pair is enabled. - The initiator's ERC20 token from `kava_erc20_address` is locked by transferring it from the initiator's 0x address to the `x/evmutil` module account's 0x address. - The same amount of sdk.Coin are minted for the corresponding denom of the `kava_erc20_address` in the `EnabledConversionPairs` param. The coins are then transferred to the receiver's Kava address. ## MsgConvertCoinToERC20 `MsgConvertCoinToERC20` converts sdk.Coin to Kava ERC20. ```protobuf service Msg { // ConvertCoinToERC20 defines a method for converting sdk.Coin to Kava ERC20. rpc ConvertCoinToERC20(MsgConvertCoinToERC20) returns (MsgConvertCoinToERC20Response); } // MsgConvertCoinToERC20 defines a conversion from sdk.Coin to Kava ERC20. message MsgConvertCoinToERC20 { // Kava bech32 address initiating the conversion. string initiator = 1; // EVM 0x hex address that will receive the converted Kava ERC20 tokens. string receiver = 2; // Amount is the sdk.Coin amount to convert. cosmos.base.v1beta1.Coin amount = 3; } ``` ### State Changes - The `EnabledConversionPairs` param from `x/evmutil` is checked to ensure the conversion pair is enabled. - The specified sdk.Coin is moved from the initiator's address to the module account and burned. - The same amount of ERC20 coins are sent from the `x/evmutil` module account to the 0x receiver address.