WERC20

Overview

The WERC20 extension exposes the native CTM bank balance through an ERC-20 interface. It is enabled by the ERC20 keeper for the native token pair rather than by a single fixed precompile address. It holds no separate wrapped balance: balanceOf returns the account’s native CTM balance. Address: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE (mainnet and testnet token pair for the native denom ctm; name c8ntinuum, symbol CTM, 18 decimals)

Methods

Standard ERC-20 methods plus:

Method	Description
`deposit()`	Payable. Sends the attached CTM straight back to the caller and emits `Deposit`; no balance changes
`withdraw(uint256)`	Reverts if the caller’s spendable CTM is below the amount, otherwise emits `Withdrawal`; no tokens move

Plus all standard ERC-20 methods: balanceOf, transfer, approve, transferFrom, allowance. deposit() and withdraw() exist only for WETH interface compatibility. Neither wraps nor unwraps anything.

Usage

IWERC20 constant wctm = IWERC20(payable(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE));

// Read the caller's native CTM balance through the ERC-20 interface
uint256 balance = wctm.balanceOf(msg.sender);

// WETH-compatible calls: deposit() returns the value to this contract,
// withdraw() only checks the balance and emits an event
wctm.deposit{value: 1 ether}();
wctm.withdraw(1 ether);

For most wrapped-CTM application flows, use the pre-deployed WETH9 contract at 0xc8Fb80fCc03f699C70ff0CC08C09106288888888. WETH9 is a fixed genesis contract; WERC20 addresses are dynamic token-pair surfaces.

For exact signatures, events, and dynamic token-pair address behavior, see Precompile ABI Reference.

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Core Concepts

Chain Architecture

Execution and EVM

Interoperability and IBC

Modules & Precompiles

Transaction Lifecycle

Overview

Methods

Usage

​Overview

​Methods

​Usage

Overview

Methods

Usage