// GLOSSARY -- BLOCKCHAIN & CRYPTO FUNDAMENTALS

What is Solana?

1 min read Updated

Solana is a high-performance Layer 1 blockchain designed for speed and low cost, using a unique Proof of History consensus mechanism to achieve thousands of transactions per second.

WHY IT MATTERS

Solana takes a different approach to blockchain design: optimize for speed at the base layer. While Ethereum processes ~15 TPS on L1 and scales through rollups, Solana achieves 400-65,000 TPS natively through parallelized execution and Proof of History timestamping.

This makes Solana attractive for latency-sensitive applications: high-frequency DeFi trading (on-chain order books), consumer applications (compressed NFTs), and payments. Transaction costs are fractions of a cent.

The tradeoff: Solana's validator hardware requirements are significantly higher than Ethereum's, raising decentralization concerns. The network has also experienced several outages, highlighting the challenges of its aggressive performance optimization.

FREQUENTLY ASKED QUESTIONS

How fast is Solana?
Solana targets 400ms block times and has demonstrated thousands of TPS in practice. Theoretical capacity is 65,000 TPS, though real-world throughput depends on transaction complexity.
What is Proof of History?
A cryptographic clock that timestamps transactions before consensus, reducing the communication overhead validators need. It's not a consensus mechanism itself — Solana uses PoS for consensus, with PoH for ordering.
Is Solana a competitor to Ethereum?
They occupy different niches. Solana competes on speed and cost at L1. Ethereum competes on decentralization, security, and ecosystem size. Ethereum's L2s increasingly match Solana's performance.

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