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Types of Cryptocurrencies

Bitcoin was the first cryptocurrency and remains the largest by market capitalisation. But the ecosystem that grew from Nakamoto's whitepaper has expanded into thousands of distinct digital assets, each with different technical architectures, use cases, and investment profiles. Understanding the…

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Types of Cryptocurrencies

Beyond Bitcoin

Bitcoin was the first cryptocurrency and remains the largest by market capitalisation. But the ecosystem that grew from Nakamoto's whitepaper has expanded into thousands of distinct digital assets, each with different technical architectures, use cases, and investment profiles. Understanding the major categories is essential to navigating the crypto landscape with any rigour.

Bitcoin: The Original Store of Value

Bitcoin (BTC) is the reference asset of the crypto world — the most liquid, most widely held, most institutionally recognised cryptocurrency. It is distinguished by its fixed supply cap of 21 million coins, its decentralised governance (no company or individual can alter the protocol), and its 15+ year operational history.

Bitcoin's primary investment thesis is as a digital store of value: an asset with provable scarcity, uncensorable transfer, and no dependence on any counterparty. Critics argue this thesis depends on speculative consensus rather than fundamental value generation.

Ethereum: Programmable Blockchain

Ethereum (ETH) introduced the concept of smart contracts — self-executing code that lives on the blockchain and runs automatically when predefined conditions are met. This made Ethereum not just a currency but a programmable platform.

Ethereum is the foundation of DeFi (Decentralised Finance) — financial applications including lending, borrowing, and trading built on-chain without intermediaries — and NFTs (Non-Fungible Tokens). Ether (ETH) is used to pay transaction fees ("gas") on the network, giving it utility demand beyond pure speculation.

Stablecoins

Stablecoins are cryptocurrencies designed to maintain a fixed value, typically pegged to the US dollar. Major examples include USDC (issued by Circle, fully backed by cash and short-term Treasuries), Tether (USDT) (the most traded, though its reserve backing has been questioned), and DAI (algorithmic, collateralised by other crypto assets).

Stablecoins provide a dollar-denominated medium of exchange within crypto ecosystems — useful for trading, DeFi, and cross-border transfers — without the volatility of other cryptocurrencies.

Altcoins

The term "altcoin" (alternative coin) refers to all cryptocurrencies other than Bitcoin. This is an enormous and heterogeneous category — from credible layer-1 blockchains (Solana, Cardano, Avalanche) to payment-focused coins (Litecoin, XRP) to meme coins (Dogecoin, Shiba Inu) with no serious technical foundation beyond community speculation.

The altcoin category carries substantially higher risk than Bitcoin: most altcoins have limited liquidity, high concentration of supply in developer wallets, opaque governance, and no track record through extended bear markets.

Educational content only. Not financial, investment, tax or legal advice. Learn more

Quiz me on this
What distinguishes Ethereum from Bitcoin in its primary design purpose?
  1. Ethereum was designed to be faster than Bitcoin, processing transactions in seconds rather than minutes
  2. ✓ While Bitcoin is primarily designed as a decentralised store of value and payment system, Ethereum is a programmable blockchain platform — its smart contract functionality enables decentralised applications, DeFi protocols, and NFTs to be built on top of it
  3. Ethereum has an unlimited supply while Bitcoin is capped at 21 million, making Ethereum inflationary by design
  4. Ethereum is controlled by the Ethereum Foundation, making it a centralised organisation unlike Bitcoin's fully decentralised structure
What risk is specific to the altcoin category compared to Bitcoin investment?
  1. Altcoins are subject to higher capital gains tax rates than Bitcoin in most jurisdictions
  2. ✓ Most altcoins have limited liquidity, high developer wallet concentration (few insiders hold large proportions of supply), opaque governance, and no track record through extended bear markets — making them susceptible to collapse, pump-and-dump, or gradual abandonment
  3. Altcoins cannot be held in regulated crypto exchanges, limiting their accessibility
  4. Altcoin transactions are not recorded on public blockchains, reducing transparency compared to Bitcoin
Why do stablecoins have utility demand even among investors who are not interested in crypto speculation?
  1. Stablecoins earn a guaranteed 5% yield through automatic DeFi protocol lending
  2. ✓ Stablecoins provide dollar-denominated digital cash usable within crypto ecosystems for trading, DeFi participation, and cross-border value transfer — their utility is transactional, not speculative
  3. Stablecoins are the only cryptocurrency accepted for tax payments in multiple jurisdictions
  4. Stablecoins maintain their peg through central bank reserve backing in every major country
What is "gas" in the Ethereum context, and why does it exist?
  1. Gas is the computational energy released when Ethereum validates a proof-of-stake block
  2. ✓ Gas is the fee paid in Ether to compensate validators for the computational work of executing transactions and smart contracts on the Ethereum network — it prices computation and prevents spam by making all operations have a real cost
  3. Gas is a measure of Ethereum's environmental impact, introduced after the 2022 Merge to track energy consumption
  4. Gas is the name for the newly created Ether released to validators as a block reward