What is a Layer in Crypto?

**Examples of Coins Based on Layer**

**Layer 0**: DOT $DOT (Polkadot), ATOM$ATOM (Cosmos)

Layer 1**: BTC$BTC (Bitcoin), ETH (Ethereum), SOL (Solana). - **

Layer 2**: MATIC (Polygon), OP (Optimism), ARB (Arbitrum). - **

Layer 3**: DeFi tokens such as UNI (Uniswap) or AAVE (Aave).

**Coin Layer Function**

- **Transaction**: As a means of payment or transaction fees.

- **Governance**: Provides voting rights in network decision making.

- **Staking**: Used to secure the network and earn rewards.

- **Utility**: Used in certain applications, such as DeFi or NFT.

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