What Is Solana? A Beginner's Guide to the Blockchain

Solana is a Layer 1 blockchain launched in 2020, designed to process a very high volume of transactions per second at low cost by combining a standard proof-of-stake consensus mechanism with a novel timestamping technique called Proof of History.

Solana is widely used for decentralized exchanges, NFT marketplaces, payments, and meme token trading, and it consistently ranks among the largest blockchains by total value locked and daily active addresses.

Proof of History: the core innovation

The core problem Solana set out to solve is that in most blockchains, validators spend significant time and communication just agreeing on the order and timing of events before they can even start validating transactions. Solana's Proof of History (PoH) is a way of cryptographically proving that time has passed between events, using a verifiable delay function that produces a continuous, sequential hash chain.

Practically, PoH acts as a built-in clock the whole network can trust without needing to constantly communicate to synchronize timestamps. Combined with Solana's proof-of-stake validator set, this lets the network order and process transactions much faster than chains where validators must directly negotiate ordering and timing for every batch of transactions.

What Solana is actually used for

• Decentralized exchanges — Solana hosts some of the largest DEX trading volumes of any chain, with automated market makers and order-book style exchanges both represented.
• NFT marketplaces — Solana's low fees made it a popular home for NFT minting and trading, especially during periods when Ethereum gas fees were high.
• Payments — Sub-cent fees and sub-second confirmation times have made Solana a target for payments-focused apps, including some stablecoin-based point-of-sale experiments.
• Meme tokens — Solana's cheap, fast token creation tools have made it a hub for meme coin launches, for better and worse — it's a genuine use case, but also a magnet for the scams covered in our guide to common DeFi scams.

Tradeoffs and honest risks

Speed and low fees aren't free. Solana has experienced multiple network outages over its history, some lasting hours, where the network stopped producing blocks entirely — usually triggered by resource exhaustion from transaction spam or bugs in specific software versions. These outages have been less frequent as the client software has matured, but they're a real part of Solana's track record and worth weighing against its throughput advantages.

Solana's validator hardware requirements are also relatively demanding compared to some chains, which affects how many people can realistically run a full validator and is a relevant consideration under the scalability trilemma framing — Solana leans harder toward throughput, which has historically come with the tradeoff of higher validator requirements and past stability issues.

Solana vs a typical Layer 1: quick comparison

Feature	Solana	Typical account-based L1 (e.g., Ethereum)
Consensus	Proof of Stake + Proof of History	Proof of Stake
Typical fees	Fractions of a cent	Varies, often higher on base layer
Confirmation speed	Sub-second to a few seconds	Seconds (base layer), faster on L2
Scaling approach	High-throughput single chain	Base layer + Layer 2 rollups
Notable historical risk	Past network outages	Higher base-layer fees during congestion

Getting started safely

If you're going to hold or transact with SOL or Solana-based tokens, the same fundamentals apply as on any chain: use a reputable non-custodial wallet, never share your seed phrase, and be especially cautious with newly launched tokens given how cheap and fast token creation is on Solana. Our general DeFi wallet security guide covers the habits that matter regardless of which chain you're using.

Bottom line

Solana is a genuinely fast, low-fee Layer 1 that has found real product-market fit in trading, NFTs, and payments, built on a distinctive timestamping innovation rather than just bigger blocks. Its tradeoffs — a history of network outages and comparatively demanding validator requirements — are real and documented, not hypothetical. Whether that tradeoff is worth it depends on what you're using the chain for, and it's worth comparing directly against alternatives like Ethereum or BNB Chain before committing capital to any one ecosystem.