What is Polygon (POL)? Complete Guide (2026)
Polygon is one of the most widely used blockchain networks in crypto. Originally built to make Ethereum usable — by slashing fees and speeding up transactions — it has evolved into something more ambitious: a multi-chain ecosystem at the frontier of zero-knowledge cryptography. If you’ve ever paid $0.001 for a transaction that would have cost $15 on Ethereum mainnet, there’s a good chance you were using Polygon.
What is Polygon?
Polygon (originally called Matic Network) is a blockchain platform designed to complement Ethereum. It provides faster, cheaper transactions while remaining closely connected to Ethereum’s security and liquidity. Launched in 2017 and rebranded to Polygon in 2021, it has become one of the most-used blockchains in the world across DeFi, NFTs, and gaming.
Polygon isn’t quite an Ethereum Layer 2 in the strict technical sense, and it isn’t quite a standalone chain either. The original Polygon PoS network is best described as a commit chain or sidechain: it runs its own validators and posts checkpoints to Ethereum for security, but it doesn’t inherit Ethereum’s full security for every transaction the way true rollups do.
Polygon has been transparent about this, which is why it has been building toward a more robust architecture — Polygon zkEVM — which is a genuine ZK rollup.
The MATIC to POL Rebrand (2024)
In September 2024, Polygon completed a significant transition: the native token was upgraded from MATIC to POL.
This wasn’t just a cosmetic change. POL was designed with an expanded role in mind:
If you held MATIC, the conversion was automatic or manual depending on your wallet/exchange. 1 MATIC = 1 POL. Most exchanges and interfaces now display POL, though some older integrations still show MATIC.
How Polygon PoS Works
Polygon Proof of Stake is the original, most battle-tested Polygon network. Here’s how it operates:
The checkpoint mechanism is what ties Polygon PoS to Ethereum. While individual transactions aren’t verified by Ethereum validators, the checkpoints mean that if you need to withdraw assets to Ethereum mainnet, there’s a cryptographic proof of your balance anchored to Ethereum.
Polygon PoS performance:
- Block time: ~2 seconds
- Fees: $0.001–$0.01 for most transactions
- Finality: Fast on Polygon, ~30 minutes to withdraw to Ethereum via the PoS bridge
- Validators: ~100 active validators
Polygon zkEVM: The Future
Polygon zkEVM is Polygon’s answer to the full rollup challenge. Launched on mainnet in 2023, it is a genuine ZK rollup that:
- Executes transactions on its own network
- Posts that proof to Ethereum mainnet
- Inherits Ethereum’s full security — no trust required
zkEVM stands for zero-knowledge Ethereum Virtual Machine. This means it runs the same smart contracts as Ethereum (Solidity code works without changes) but uses ZK proofs for security rather than optimistic assumptions.
Why does this matter? ZK rollups are considered the endgame for Ethereum scaling. They’re faster to finalise than optimistic rollups (no 7-day challenge window), more secure, and progressively becoming cheaper to use. Polygon zkEVM is one of the most EVM-compatible ZK rollups — developers can deploy Ethereum contracts with minimal modifications.
Polygon’s roadmap envisions Polygon PoS eventually migrating to a ZK-secured architecture, unifying the ecosystem under a coherent security model.
The Polygon Ecosystem
Polygon has one of the broadest ecosystems across DeFi, gaming, and enterprise use.
DeFi
QuickSwap is the leading DEX on Polygon PoS, operating as a Uniswap v3 fork with deep liquidity for POL, WETH, USDC, and other major tokens. It’s the first place most Polygon DeFi users go to swap.
Aave deployed on Polygon early and the protocol remains active with significant liquidity. Borrowing and lending rates on Polygon Aave are typically lower-friction than Ethereum mainnet.
Curve Finance, Balancer, and 1inch all have presences on Polygon, providing stablecoin swaps, multi-token pools, and DEX aggregation respectively.
Gaming and NFTs
Gaming has been one of Polygon’s strongest use cases. Its low fees and EVM compatibility make it ideal for in-game asset transactions. Major gaming projects that use or have used Polygon include:
- Various mobile Web3 games using Polygon for microtransactions
Enterprise
Polygon has signed significant enterprise deals. Starbucks Odyssey was built on Polygon. Nike’s .Swoosh NFT platform used Polygon. While some of these projects have scaled back, they demonstrated Polygon’s viability for mainstream consumer applications.
How to Use Polygon: Step-by-Step
Adding Polygon to MetaMask
- Open MetaMask and click the network dropdown (top of the screen)
- Click “Add network” → “Add a network manually”
- Enter the following details:
– Network Name: Polygon Mainnet
– New RPC URL: https://polygon-rpc.com
– Chain ID: 137
– Currency Symbol: POL
– Block Explorer: https://polygonscan.com
- Click Save
Alternatively, visit chainlist.org, search for Polygon, and click “Add to MetaMask” for a one-click setup.
Bridging ETH or Assets to Polygon
Option 1: Official Polygon Bridge
Go to portal.polygon.technology. Connect your wallet, select the asset and amount, and bridge to Polygon. This is the most secure route but can take 7–30 minutes for the PoS bridge.
Option 2: Third-Party Bridges
Faster options include Across Protocol, Stargate Finance, and Synapse Protocol. These typically complete in 1–5 minutes but charge a small bridge fee in addition to gas.
Option 3: Buy POL directly
The simplest approach: buy POL on an exchange (Binance, Coinbase, Kraken) and withdraw directly to your Polygon wallet address. No bridging required.
POL Token: Uses and Staking
| Use Case | Details |
|---|---|
| Gas fees | Every Polygon PoS transaction requires POL for gas |
| Staking | Stake POL to validators to earn ~4–8% APY |
| Governance | Vote on Polygon Improvement Proposals (PIPs) |
| Validator collateral | Validators must stake POL to participate |
| Multi-chain validation | POL enables validators to secure multiple Polygon chains |
Staking POL: You can stake POL through the official Polygon staking interface at staking.polygon.technology. Choose a validator, delegate your POL, and earn rewards. Unbonding takes approximately 3–4 days after unstaking.
Polygon vs Arbitrum vs Optimism
| Feature | Polygon PoS | Arbitrum One | Optimism |
|---|---|---|---|
| Type | Commit chain / sidechain | Optimistic rollup (L2) | Optimistic rollup (L2) |
| Security model | Own validators + ETH checkpoints | Inherits Ethereum security | Inherits Ethereum security |
| Average fees | $0.001–$0.01 | $0.01–$0.10 | $0.01–$0.10 |
| Transaction speed | ~2 seconds | ~0.25 seconds | ~2 seconds |
| Withdrawal to ETH | ~30 minutes | 7 days (without fast bridge) | 7 days (without fast bridge) |
| DeFi TVL | ~$1B+ | ~$3B+ | ~$1B+ |
| EVM compatibility | Full | Full | Full |
| Token | POL | ARB | OP |
| Notable protocols | QuickSwap, Aave | GMX, Radiant, Camelot | Synthetix, Velodrome |
The key distinction: Arbitrum and Optimism are true Layer 2s — they post all transaction data to Ethereum and inherit its security. Polygon PoS is a sidechain that posts periodic checkpoints but doesn’t post all transaction data to Ethereum. This makes Polygon PoS slightly less secure in theory but also cheaper and faster.
For most everyday DeFi use, this distinction doesn’t matter in practice. For large amounts or institutional use, the security model difference is worth understanding.
Frequently Asked Questions
Is MATIC the same as POL?
Yes and no. MATIC was upgraded to POL in 2024 at a 1:1 ratio. The two tokens are functionally equivalent in terms of value, but POL has expanded capabilities including multi-chain staking. If you held MATIC on a major exchange, it was likely converted automatically. If you held it in a self-custody wallet, you may need to use the official migration tool.
Is Polygon PoS being shut down?
No. Polygon PoS continues to operate and has significant TVL and user activity. The long-term roadmap envisions it evolving toward ZK-secured technology, but it remains fully supported and operational.
What’s the difference between Polygon PoS and Polygon zkEVM?
They are two separate networks with different security models. Polygon PoS uses its own validators and checkpoints to Ethereum. Polygon zkEVM is a true ZK rollup that posts proofs to Ethereum for every batch of transactions. zkEVM is more secure but currently has less liquidity and fewer integrations. Both use POL.
Can I use Polygon without MetaMask?
Yes. Polygon PoS is supported by Coinbase Wallet, Trust Wallet, Rainbow Wallet, and most major web3 wallets. The network details (Chain ID 137) are the same regardless of which wallet you use.
How is Polygon different from Ethereum?
Polygon is a separate blockchain that’s closely connected to Ethereum. It uses the same wallet addresses and the same smart contract language (Solidity), so the user experience is very similar. The key differences are much lower fees and faster transactions, at the cost of slightly different security assumptions.
What is Polygon’s TVL?
Total Value Locked (TVL) fluctuates with market conditions. As of 2026, Polygon PoS maintains over $1 billion in TVL across DeFi protocols. Check DeFiLlama for current figures.
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