$ALT Altcoin!

Altcoin is an umbrella term for alternative cryptocurrencies beyond Bitcoin, the first and most well-known cryptocurrency. Altcoins are digital currencies that operate independently of Bitcoin, with their own unique features, uses, and blockchain technologies.

*Characteristics:*

1. Separate blockchain or forked from existing blockchain

2. Distinct consensus algorithms (e.g., Proof of Stake, Delegated Proof of Stake)

3. Varied transaction processing speeds and fees

4. Different mining or validation mechanisms

5. Unique use cases or applications (e.g., smart contracts, DeFi, gaming)

*Examples of popular Altcoins:*

1. Ethereum (ETH)

2. Ripple (XRP)

3. Litecoin (LTC)

4. Bitcoin Cash (BCH)

5. Cardano (ADA)

6. Stellar (XLM)

7. Dogecoin (DOGE)

8. Monero (XMR)