Bitcoin vs. altcoins
First, some basics: Cryptocurrency is a digital form of money that relies on a decentralized ledger—called blockchain—to record transactions. Blockchain is important to cryptocurrencies and decentralized finance because it allows participants to purchase goods and services without the need for an authoritative intermediary, like a bank, since the blockchain keeps track of how much money users have. The upside of this is that individuals retain far greater control of their money than they would if they stashed their cash in a traditional bank.
Cryptocurrencies are made up of coins and tokens. The two terms are not synonymous, despite them sometimes being used interchangeably. A coin refers to a native cryptocurrency built on its own blockchain. Examples of coins include Bitcoin, Ether and Litecoin. A token, on the other hand, is created on top of an existing blockchain. Most altcoins available today are tokens, built on top of existing blockchains, like Ethereum. It is important to note that when you purchase a coin or token, you are investing in the underlying blockchain. Often, prices of cryptocurrencies will change based on whether or not investors feel the underlying blockchain has value.
The concept of cryptocurrency was popularized by the pseudonymous and mysterious creator(s) of Bitcoin, Satoshi Nakamoto, in a 2008 whitepaper, in which he/they/it described a blockchain-based monetary system. This whitepaper and the introduction of Bitcoin the same year, inspired scores of companies to develop their own unique ledgers and create alternative cryptocurrencies. Nowadays, any coin or token that’s not Bitcoin is referred to as an altcoin. Some altcoins, like Ether, have become hugely popular in their own right. Ether is now the second largest cryptocurrency, after Bitcoin, in terms of market cap.
A principal component of the Bitcoin protocol deals with its supply. Bitcoin only allows for a total of 21 million coins to ever be created. This cap on the supply keeps Bitcoin’s scarcity in check. Nearly 19 million bitcoins have been created at the time of writing. The low number of circulating coins help bolster Bitcoin’s value.
Aside from total supply, altcoins can differ from Bitcoin in a number of ways. Ether, the native coin of the Ethereum blockchain, for example, was the first altcoin used to fuel transactions on a smart contract platform. Smart contracts, which are programs that execute automatically when specific conditions are met, allow for the creation of decentralized applications (dApps) on the Ethereum network. dApps can be used for a variety of purposes like gaming, finance, and social media.
One example of a popular dApp built on top of Ethereum is Uniswap. Uniswap is a decentralized exchange, allowing participants to quickly swap between the myriad of altcoins using Ethereum’s ERC-20 token standard. Uniswap’s token, UNI, is now listed in the top 20 cryptocurrencies by market cap.
Today, there are thousands of altcoins competing for the attention of consumers. And as blockchain technologies improve upon earlier iterations, new concepts, like decentralized finance (DeFi), are introduced to the masses.