1
Various cryptocurrencies exist beyond Bitcoin and Ethereum, each serving different purposes and utilizing different mechanisms (e.g., EOS, Stellar, Litecoin, Tether, Cardano, Monero).
2
Bitcoin serves as a successful replacement for gold, offering easier storage (a 32-byte secret signing key), transport, and exchange.
3
Cryptocurrencies provide vital financial alternatives in developing economies where local financial systems may not be trusted.
4
Key limitations of current blockchain systems include slow scaling (Bitcoin handles roughly 3 transactions per second compared to Visa or PayPal) and high price volatility.
5
Solutions to these challenges include stablecoins to mitigate volatility and various upcoming scaling proposals.