> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stablenet.network/llms.txt
> Use this file to discover all available pages before exploring further.

# WKRC — KRW-Pegged Gas Token

> WKRC is StableNet's native coin — a KRW-backed stablecoin that functions as both the gas token and primary currency, with predictable fees by design.

> WKRC is pegged 1:1 to the Korean Won and is the only token you need on StableNet — for gas, transfers, and contract interactions.

On most EVM chains, gas fees fluctuate with the price of a volatile native token. StableNet removes this variable: gas is denominated in WKRC, which tracks KRW. If you know the current KRW/gas price, you can predict transaction costs without tracking a token price.

## What WKRC is

WKRC (KRW-pegged) is StableNet's native coin, exposed as a standard ERC-20 token through the **NativeCoinAdapter** system contract.

| Property       | Value                                        |
| -------------- | -------------------------------------------- |
| Symbol         | `WKRC`                                       |
| Decimals       | 18                                           |
| Peg            | Korean Won (KRW), 1:1                        |
| ERC-20 address | `0x0000000000000000000000000000000000001000` |
| Standard       | ERC-20, FiatTokenV2\_2 compatible            |

`balanceOf(address)` reads the account's native balance directly — there is no separate token storage. The same balance used for gas is the balance returned by the ERC-20 interface.

## How gas fees work

Every transaction pays two components, both in WKRC:

| Component              | How it's set                    | Stability                             |
| ---------------------- | ------------------------------- | ------------------------------------- |
| Base fee               | Protocol, adjusts ±2% per block | High — changes slowly                 |
| Priority fee (gas tip) | GovValidator governance         | Fixed — same for all general accounts |

The governance-enforced tip means all general accounts pay the same priority fee. There is no gas price competition — you cannot outbid other users by raising your tip.

**Base fee adjustment thresholds:**

| Gas utilization | Change        |
| --------------- | ------------- |
| > 20%           | +2% per block |
| 6%–20%          | unchanged     |
| \< 6%           | −2% per block |

Compared to Ethereum's ±12.5% swing, this keeps the base fee predictable across blocks. The base fee has a minimum of 20,000 gwei and a maximum of 20,000,000 gwei.

## Fee calculation

```text theme={null}
effectiveGasPrice = baseFee + min(governanceTip, maxFeePerGas − baseFee)
totalCost = gasUsed × effectiveGasPrice
```

To avoid rejection, set `maxPriorityFeePerGas` to at least the governance tip. Query the current value with `eth_maxPriorityFeePerGas`.

```typescript theme={null}
const tip = await provider.send("eth_maxPriorityFeePerGas", []);
// Use this as maxPriorityFeePerGas in your transaction
```

## Supply model

WKRC supply is not pre-minted at genesis and has no block rewards. Supply changes only through governance-approved mint/burn operations:

* **Mint** — when a licensed institution deposits KRW fiat
* **Burn** — when a holder redeems KRW fiat

The base fee collected from transactions is **distributed to validators**, not burned. Burning only happens at fiat redemption, preserving the 1:1 peg.

## Developer benefits

* Fee estimates are stable in fiat terms — no token price volatility to account for
* Same token for gas and transfers — no separate wrapped token or bridging step
* Standard ERC-20 `approve` / `transferFrom` / `balanceOf` interface works as expected
* FiatTokenV2\_2 compatible — existing Circle USDC tooling works without modification

## Related

* [Gas and Fees](/en/v0.3/learn/gas-and-fees) — detailed fee calculation and priority fee mechanics
* [Contract Addresses](/en/v0.3/reference/contract-addresses) — NativeCoinAdapter address and interface
* [Governance Overview](/en/v0.3/learn/governance-overview) — how the gas tip and supply are governed