The terms ‘Ethereum, Solana, Polkadot and Tether’, sometimes mentioned in the news, refer to
[amp_mcq option1=”Cryptocurrencies” option2=”Earth Observation Satellites” option3=”Hypersonic Cruise Missiles” option4=”Virtual Private Network service providers” correct=”option1″]
This question was previously asked in
UPSC CDS-2 – 2022
Cryptocurrencies are digital or virtual currencies that are secured by cryptography, which makes it nearly impossible to counterfeit or double-spend. Many cryptocurrencies are decentralized networks based on blockchain technology—a distributed ledger enforced by a disparate network of computers.