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

# Native BINI

> BINI as the native gas token of BiniChain.

<Card title="See the full token spec" icon="coins" href="/bini-token/overview">
  BINI Token → Overview covers allocation, emission, sinks, and where to buy.
</Card>

## BINI as gas

Every BiniChain transaction pays its gas in **native BINI**. This is the same role ETH plays on Ethereum — the native currency that pays validators / gets burned.

|                 | Ethereum             | BiniChain            |
| --------------- | -------------------- | -------------------- |
| Native currency | ETH                  | BINI                 |
| Token contract  | Native (no contract) | Native (no contract) |
| ERC-20 wrapper  | wETH                 | **wBINI**            |

## Acquiring native BINI

Three paths to get BINI on BiniChain:

### 1. Bridge from Ethereum

The [BaiDEX bridge](/baidex/contracts) (when deployed) lets you convert ERC-20 BINI on Ethereum into native BINI on BiniChain at 1:1.

```
ERC-20 BINI on Ethereum  →  Bridge  →  Native BINI on BiniChain (1:1)
```

This is the primary path for users who hold ERC-20 BINI from CEX purchases.

### 2. Buy on Binibit Exchange

[binibit.com/en/exchange?symbol=BINI\_USDT](https://binibit.com/en/exchange?symbol=BINI_USDT) sells BINI as ERC-20. Withdraw to BiniChain (when supported by the exchange UI) — bypasses the explicit bridge for some flows.

### 3. Bridge B (off-chain rewards → native)

If you've earned off-chain BINI in the [Bini App](/bini-app/overview) (quest rewards, lottery wins), use [Bridge B](/bini-app/bini-bridge) at Level 7+ to convert at 1:1.

## Wrapping and unwrapping

To use BINI in BaiDEX pools (V3 LP positions), you wrap it to **wBINI** (ERC-20):

```javascript theme={null}
// Wrap: native BINI → wBINI ERC-20
await wbiniContract.deposit({ value: ethers.parseEther("1.0") });

// Unwrap: wBINI ERC-20 → native BINI
await wbiniContract.withdraw(ethers.parseEther("1.0"));
```

1:1 conversion, no fee.

## Gas cost expectations

Typical transaction gas (subject to BiniChain final settings):

| Transaction              | Gas                   | Cost (at chain gas price × \$0.12 BINI) |
| ------------------------ | --------------------- | --------------------------------------- |
| Native BINI transfer     | \~21,000              | \~\$0.005 (illustrative)                |
| ERC-20 transfer          | \~50,000              | \~\$0.012                               |
| BaiDEX swap (single hop) | \~150,000             | \~\$0.036                               |
| AgentT Launchpad spawn   | \~500,000 + spawn fee | \~\$0.12 + fee                          |
| LP position mint         | \~250,000             | \~\$0.06                                |

Numbers are illustrative — final gas economics depend on chain config + actual gas price.

## Block reward and burn

BiniChain validators earn block rewards in BINI:

```
Block reward = priority fees + (optional) emission
```

Per the [BINI emission schedule](/bini-token/emission), the Rewards pool (60% / 600M BINI) is allocated over 4 years. Some portion of that may flow to validators as block rewards (final policy TBD).

The base fee (EIP-1559 style) is partially **burned** — sink #1 in [BINI Sinks](/tokenomics/bini-sinks).

## Native BINI vs ERC-20 BINI

|                            | ERC-20 BINI (Ethereum)                       | Native BINI (BiniChain)   |
| -------------------------- | -------------------------------------------- | ------------------------- |
| Address                    | `0x445d03f499f1c150615957bb87588fb465fc91cc` | No contract — native      |
| Used as gas?               | No (ETH is gas on Ethereum)                  | **Yes**                   |
| Tradable on CEX?           | Yes (Binibit, Azbit, Blynex)                 | Indirectly (via bridge)   |
| Stake on Binibit Exchange? | Yes (160% APR)                               | No                        |
| Used in BaiDEX pools?      | Bridge to wBINI first                        | Wrap to wBINI             |
| Total supply ceiling       | 1B (combined with native)                    | 1B (combined with ERC-20) |

The 1B supply is **shared across both representations**. The bridge maintains the 1:1 peg — at any time, total ERC-20 + total native = 1,000,000,000 BINI.

## Related

<CardGroup cols={2}>
  <Card title="Bridges" icon="bridge" href="/binichain/bridges">
    How to move BINI on/off chain
  </Card>

  <Card title="BINI Token" icon="coins" href="/bini-token/overview">
    Full token spec
  </Card>

  <Card title="Contracts" icon="file-code" href="/baidex/contracts">
    wBINI contract address
  </Card>

  <Card title="Tokenomics: BINI Sinks" icon="fire" href="/tokenomics/bini-sinks">
    Gas burn mechanic
  </Card>
</CardGroup>