"Altcoin" is a colloquial term used for cryptocurrencies other than bitcoin. The term refers to these cryptocurrencies being considered "alternative coins," as they are not as well-established as bitcoin. They may also have features or benefits that bitcoin does not.
- Goldman-backed startup Circle buys major crypto exchange Poloniex. Reuters.
- Altcoin News. Cointelegraph.
- Ripple Fever? Other Crypto Assets Are Outpacing Its 2018 Gains. Coindesk.