Solana (SOL) is a Layer 1 blockchain built for speed and low cost — a rival to Ethereum that tries to run everything on one very fast base chain instead of relying on Layer 2s. It can handle thousands of transactions per second that settle in under a second for tiny fractions of a cent, using a design (proof-of-stake plus a time-ordering trick called 'proof of history') tuned for raw performance. That makes it popular for high-volume uses: trading, payments, meme coins and consumer apps. SOL is used to pay fees and to stake (lock tokens to help secure the network in exchange for rewards).
Where it stands today: Solana has turned its biggest weakness into a talking point. After several embarrassing network outages in 2022–2023, it has run without a major outage since early 2024 — it even survived a huge week-long denial-of-service attack in late 2025 without going down. Its new 'Firedancer' validator software (a from-scratch rebuild for speed and reliability, by Jump Crypto) is rolling out gradually across the network. Spot SOL ETFs now trade in the US, daily active users have held in the millions, the amount of stablecoins on Solana has grown into the billions, and payment integrations (Visa, Shopify) push real volume. So today it's the strongest performance-focused challenger to Ethereum, with adoption and reliability that finally back up the speed claims.