Solana
SOLHigh-performance レイヤー1 ブロックチェーン engineered for sub-second finality and low transaction costs.
エグゼクティブサマリー
Solana is a high-speed レイヤー1 ブロックチェーン founded by Anatoly Yakovenko in 2018 and launched in 2020. Designed for scale without relying on rollups, Solana utilizes Proof-of-History (PoH) alongside Proof-of-Stake（PoS） to achieve thousands of transactions per second.
仕組み・プロトコルアーキテクチャ
Proof-of-History (PoH) Cryptographic Clock
Solana introduces Proof-of-History (PoH), a verifiable delay function (VDF) that creates a cryptographic record of timestamps between network events.
By establishing a trustworthy time standard across all nodes, Solana bypasses the need for intensive inter-node clock communication, drastically accelerating transaction processing.
Sealevel Parallel Execution Engine
Unlike single-threaded EVMs, Solana’s Sealevel execution runtime allows スマートコントラクトs to run concurrently if they do not modify overlapping account states.
This parallel execution design enables hardware-scaling 処理能力（スループット）, maintaining transaction fees near fractions of a cent.
主なユースケース
利点と課題
利点・強み
- Sub-second transaction finality and processing speeds up to 65,000 TPS
- Extremely low transaction fees (typically < $0.001)
- Single execution environment avoiding liquidity fragmentation
課題・制限事項
- Demanding hardware requirements for running validator nodes
- Historical network outage incidents during initial mainnet beta phases
- Higher centralization index regarding physical validator infrastructure
よくある質問
Q: What is Proof-of-History (PoH)?
Proof-of-History is a cryptographic clock sequence that embeds time data directly into the ブロックチェーン ledger to enable rapid consensus among nodes.
Q: How does Solana achieve low transaction fees?
Through parallelized スマートコントラクト execution (Sealevel) and Proof-of-History, Solana processes thousands of transactions per second without base-layer bottlenecks.
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