Solana (SOL) is one of the fastest and most heavily used smart-contract blockchains. It was designed for mass-market applications: fast payments, trading on decentralized exchanges, stablecoins, NFTs and games — use cases where people expect a transaction to confirm almost instantly and cost a fraction of a cent. That is why Solana attracts so many DEX traders, meme coins and payment services.
Solana also raises questions, though: how decentralized is it, why did the network halt in the past, what is Proof of History, how do fees and SOL inflation work, and how does Solana compare with Ethereum? This Solana review is useful for beginners buying SOL for the first time and for people who already use wallets like Phantom and want to understand the network better.
You will learn the project’s history, how its consensus works, SOL’s economics, the specifics of addresses and fees, what the Firedancer client and the Alpenglow upgrade change, the network’s strengths and weaknesses, who it suits, and how to buy and store SOL safely. There is no investment advice or price forecasting here.
- What is Solana
- Solana history
- How Solana works: Proof of History and Proof of Stake
- The SOL token: issuance, inflation and staking
- Solana compared: table
- Fees, addresses and SPL tokens
- The Solana ecosystem
- Network reliability: outages, Firedancer and Alpenglow
- Solana pros, cons and risks
- Who Solana is for
- How to buy and store SOL
- FAQ
- Conclusion
- Sources
What is Solana
Solana is a Layer 1 smart-contract blockchain that prioritizes high throughput and low latency. Unlike Ethereum, which scales mainly through Layer 2 networks, Solana tries to process as many operations as possible directly on its base layer. This approach is often called a monolithic architecture.
SOL is the network’s native token. It pays transaction fees, is staked to secure the network, and serves as a base asset across Solana’s DeFi applications. The smallest unit of SOL is the lamport: 1 SOL = 1,000,000,000 lamports.
From a user’s perspective, Solana feels simple: fast confirmations, low fees and a wide choice of apps. Behind that simplicity, however, lies fairly complex engineering and demanding hardware requirements for validators, which affect decentralization — a topic we return to below.
Solana history
The project was founded by Anatoly Yakovenko, a former engineer at Qualcomm. In November 2017 he published a white paper describing Proof of History — a cryptographic “clock” for blockchains. Together with co-founder Raj Gokal and other engineers, he set up Solana Labs.
Solana’s mainnet beta launched in March 2020. The non-profit Solana Foundation supports the ecosystem, while validator software is developed by several independent teams, including Anza (the Agave client) and Jump Crypto (the Firedancer client).
Solana’s path has not been smooth. In 2021–2022 the network halted several times, and the collapse of FTX in November 2022 — an exchange closely tied to the ecosystem — was a major blow. Activity nonetheless grew in the following years, and Solana became one of the leading venues for stablecoins, decentralized trading and meme coins. In October 2025, the first US spot exchange-traded products holding SOL began trading.
How Solana works: Proof of History and Proof of Stake
Solana’s security relies on Proof of Stake: validators lock up SOL, and token holders can delegate their coins to them. The larger a validator’s stake, the more often it becomes the leader — the node that collects transactions and produces blocks during its time window.
Proof of History (PoH) is not a consensus mechanism but a way to order events in time. The leader continuously computes a sequential chain of SHA-256 hashes, and each transaction is “woven” into that chain. This creates a verifiable timestamp, so validators do not have to spend time agreeing on the order of events. Time on the network is split into short slots (target length around 400 milliseconds).
Voting and finality have historically used Tower BFT, a Byzantine fault-tolerant algorithm built on PoH. Solana can also execute transactions in parallel (the Sealevel runtime): because each transaction declares in advance which accounts it touches, independent operations run simultaneously on different CPU cores.
Smart contracts on Solana are called programs and are usually written in Rust. The architecture differs from Ethereum’s: program code and data live in separate accounts, which boosts performance but requires developers to think differently.
The SOL token: issuance, inflation and staking
SOL has no fixed supply cap. The network follows a predefined inflation schedule that started at 8% per year in 2021 and declines annually toward a long-term rate of 1.5%. The pace of that decline is set through community governance, and in 2026 validators voted to speed it up; the new schedule takes effect once the corresponding client upgrade ships. New coins are distributed to validators and delegators as staking rewards.
At the same time, part of the fees is burned: half of the base fee per signature is destroyed and the other half goes to the validator. Since the SIMD-0096 proposal took effect in 2025, priority fees go entirely to the validator. Against the background of inflation, burning currently offsets new issuance only in part.
SOL holders can delegate tokens to a validator directly from their wallet and receive a share of the rewards. Delegating does not hand over control of the coins, but there are nuances: stake activates and deactivates by epoch (roughly two-day periods), and returns depend on inflation, the validator’s commission and its performance. Read more in our guide on what staking is.
Solana compared: table
| Parameter | Solana (SOL) | Ethereum (ETH) | Bitcoin (BTC) |
|---|---|---|---|
| Mainnet launch | March 2020 (mainnet beta) | July 2015 | January 2009 |
| Consensus | Proof of Stake + Proof of History | Proof of Stake | Proof of Work |
| Slot/block time | About 0.4 seconds | 12 seconds | About 10 minutes |
| Scaling approach | Base layer (monolithic) | Layer 2 networks | Lightning and other layers |
| Supply cap | None; declining inflation | None; issuance minus burn | 21 million BTC |
| Smart-contract language | Rust (programs) | Solidity, Vyper (EVM) | Limited sсript |
| Token standard | SPL, Token-2022 | ERC-20 | — |
| Address format | Base58, 32–44 characters | 0x + 40 hex characters | 1…, 3…, bc1… |
| Smallest unit | 1 lamport = 0.000000001 SOL | 1 wei | 1 satoshi |
Fees, addresses and SPL tokens
A Solana fee consists of a base fee — 5,000 lamports per signature in the transaction — plus an optional priority fee that users add to get processed faster during busy periods. A typical transfer costs a small fraction of a cent, but during frenzies around popular tokens, priority fees can climb.
A Solana-specific concept is rent. Every account that stores data must hold a minimum SOL balance that makes it rent-exempt. For example, to receive a new token your wallet has to create a dedicated token account for it, and a small amount of SOL is set aside for that. When you close an empty token account, the deposit can be reclaimed. That is why you should always keep a little SOL in a Solana wallet.
Solana addresses are Base58 strings, usually 32–44 characters long, with no 0x prefix. Tokens are issued under the SPL standard (or its extended Token-2022 version). USDC and USDT both run on Solana, and it is important to check the token’s mint address. For guidance on picking a stablecoin network, see our article on USDC networks.
The Solana ecosystem
The Solana ecosystem includes decentralized exchanges and aggregators, lending, liquid-staking and derivatives protocols, NFT marketplaces, payment solutions and decentralized physical infrastructure (DePIN) projects. Low fees make the network well suited to frequent trading and micropayments.
Stablecoins play a key role: native USDC and USDT run on Solana and are used for transfers, settlements and trading. Solana has also become one of the main venues for launching meme coins — which brings activity to the network but carries high risk for buyers. We explain why such tokens are especially dangerous in our article on meme coins.
People interact with the ecosystem through non-custodial wallets such as Phantom, Solflare and Backpack, as well as hardware wallets that support Solana. See our Phantom wallet review for a closer look at one of the most popular options.
Network reliability: outages, Firedancer and Alpenglow
For a long time, the main criticism of Solana was network halts. The best-known outage happened in September 2021, when the network stopped producing blocks for about 17 hours. There were several more incidents in 2022, and in February 2024 mainnet halted for almost five hours because of a client bug. Each time, recovery required a coordinated validator restart.
Developers then focused on resilience. According to the Solana Foundation at the time of writing, there has been no full network halt since February 2024. A major milestone was the independent Firedancer client from Jump Crypto: its hybrid Frankendancer version ran on mainnet from 2024, and the full version launched in December 2025. Multiple clients reduce the risk that a single bug stops the whole network.
The next big step is the Alpenglow consensus protocol, designed to rеplace Tower BFT and cut finality from seconds to a fraction of a second. The proposal was approved by a community vote in 2025, and mainnet activation is planned in stages, with developers describing specific dates as tentative. Concentration remains an open question: a large share of stake sits with big operators and data centers, which the community continues to debate.
Solana pros, cons and risks
Advantages
- High speed. Short slots and fast confirmations suit trading and payments.
- Low fees. A typical transaction costs a small fraction of a cent.
- One unified environment. Apps and liquidity live on a single network with no L2 bridges in between.
- An active ecosystem. Plenty of DEXs, stablecoins, wallets and tools.
- Multiple independent validator clients, including Firedancer.
Disadvantages
- A history of outages. The network halted several times between 2021 and 2024.
- Demanding validator requirements. Powerful hardware and costly infrastructure limit who can run a node.
- Inflationary model. SOL supply keeps growing, even though the inflation rate declines.
- Accounts and rent take some getting used to for newcomers.
Risks
Beyond high volatility, Solana users face scam tokens and phishing sites that ask them to sign malicious transactions. Meme coins and new projects often lose most of their value. Staking results depend on the quality of the chosen validator. And like any young blockchain, Solana carries technological risk around major protocol upgrades.
Who Solana is for
Solana suits people who transact often and value low fees and fast confirmations: DEX traders, stablecoin users, participants in NFT and gaming projects, and developers who need high throughput on a single network. It may also appeal to those who want to delegate SOL and understand the risks involved.
Solana may not suit people who value maximum decentralization and minimal node requirements over speed; those looking for an asset with fixed issuance; and anyone inclined to buy random tokens without checking them. For long-term storage of larger amounts, as on any network, a hardware wallet and strict security habits are essential.
How to buy and store SOL
You can buy SOL on a centralized exchange, through P2P, or by swapping another cryptocurrency for it. If you hold USDT or BTC, an instant exchanger is convenient: on RubyCash you can swap USDT to SOL without registration and receive the coins straight to your own wallet. If you later want to move from SOL into a stablecoin, see our guide on how to exchange SOL to USDT.
- Install a wallet that supports Solana — mobile, browser extension or hardware.
- Back up your seed phrase offline and never enter it on websites or “support” forms.
- Copy your SOL address — a Base58 string without a 0x prefix.
- Make sure the sender uses the Solana network, not, for example, wrapped SOL on another chain.
- Send a small test transaction the first time.
- Keep a little SOL in your balance for fees and token-account deposits.
- Do not sign transactions you do not understand, and ignore unknown tokens and NFTs sent to you as “gifts”.
Exchange USDT to SOL
FAQ
Proof of History is a way to create a verifiable sequence of events over time using a continuous chain of hashes. It works like a cryptographic clock and helps validators agree on transaction order faster. The consensus itself is based on Proof of Stake.
No, SOL has no fixed cap. The network issues new coins on a declining inflation schedule with a long-term target of 1.5% per year. Part of the fees is burned, but for now that only partly offsets issuance.
The base fee is 5,000 lamports per signature, or 0.000005 SOL. During heavy load, users add a priority fee, so the total can rise. A separate deposit may also be needed to create a token account.
SOL pays for fees and for the deposit that makes accounts rent-exempt. Without SOL you cannot send even USDC or USDT from a non-custodial wallet. The deposit on an empty token account can usually be reclaimed by closing it.
Yes. There were several halts between 2021 and 2024; the longest lasted about 17 hours in September 2021, and the last major one happened in February 2024. Since then, developers have strengthened resilience and launched the independent Firedancer client.
Firedancer is an independent Solana validator client developed by Jump Crypto. It was written from scratch so the network does not depend on a single software implementation. The full version went live on mainnet in December 2025.
Yes. Many non-custodial wallets let you delegate SOL to a validator of your choice while keeping control of your coins. Activating and withdrawing stake takes about an epoch, and rewards depend on inflation and the validator’s commission.
A Solana address is a Base58 string, usually 32–44 characters long, with no 0x prefix. An Ethereum address starts with 0x and contains 40 hexadecimal characters. The formats are incompatible, so you cannot send directly from one network to the other.
Conclusion
Solana is a high-performance blockchain that bets on speed and low fees at the base layer. That has made it one of the main venues for decentralized trading, stablecoins and mass-market apps, while the Firedancer launch and work on Alpenglow aim to improve reliability and finality speed.
Solana also comes with real trade-offs: a history of outages, demanding validator hardware, an inflationary SOL model and an abundance of risky tokens in the ecosystem. Weigh these before buying SOL or using the network’s applications.
If you decide to use Solana, choose a reliable wallet, keep some SOL for fees, verify token addresses and never sign suspicious transactions. That way you can enjoy the network’s advantages while keeping risks to a minimum.