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Polygon | Skills Pool

Skill File

Polygon

Assist with Polygon PoS and zkEVM transactions, bridging, gas tokens, and ecosystem navigation.

jiayaoqijia33 starsMar 20, 2026

Occupation: Logisticians
Categories: Astronomy & Physics

Skill Content

Network Confusion (Critical)

Polygon PoS is the main chain — EVM compatible, uses MATIC for gas
Polygon zkEVM is separate — different RPC, same MATIC token but bridged separately
MATIC is rebranding to POL — transition in progress, wallets will update
Polygon Mainnet ≠ Ethereum Mainnet — same address format, different networks
Sending to wrong network loses funds — always verify network before sending

MATIC/POL Token

MATIC used for gas on Polygon PoS — required for all transactions
MATIC exists on Ethereum as ERC-20 — must bridge to use on Polygon
POL replacing MATIC — same value, automatic migration for most users
Native MATIC on Polygon vs ERC-20 MATIC on Ethereum — different networks

Bridging

Official Polygon Bridge: bridge.polygon.technology — safe but slow (30+ minutes to Polygon, 7 days back)
Withdrawals to Ethereum take 7 days — checkpoint mechanism for security

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Polygon

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Author: jiayaoqijia
stars: 33
Updated: Mar 20, 2026
Occupation

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01Network Confusion (Critical)

Third-party bridges faster but have smart contract risk — Hop, Across, Stargate

Bridge MATIC before bridging tokens — need gas on destination chain

Always have MATIC for gas after bridging — tokens without gas are stuck

Gas and Fees

Gas prices in gwei like Ethereum — but much cheaper (typically 30-100 gwei)
Transactions cost fractions of a cent — major advantage over Ethereum
Gas spikes during high activity — NFT mints, popular drops
Failed transactions still cost gas — same as Ethereum behavior
Priority fee for faster inclusion — same EIP-1559 model

Tokens and DeFi

Same token standards as Ethereum — ERC-20, ERC-721, ERC-1155 all work
Many Ethereum tokens have Polygon versions — verify contract addresses
Wrapped tokens need unwrapping — bridged ETH is not native ETH
QuickSwap, Uniswap, Aave all on Polygon — same interfaces as Ethereum
Lower liquidity than Ethereum mainnet — higher slippage on large trades

Wallet Setup

MetaMask supports Polygon natively — add network from chainlist.org
Chain ID: 137 — RPC: https://polygon-rpc.com
Block explorer: polygonscan.com — verify transactions and contracts
Same address as Ethereum — but balances are network-specific

Common Issues

"Insufficient MATIC for gas" — need MATIC, not just tokens
Transaction stuck pending — gas price too low, speed up or wait
Tokens not showing in wallet — add custom token with contract address
Bridge transaction pending — checkpoints take time, don't panic
"Network not supported" — dApp may not support Polygon, check docs

zkEVM Specifics

Separate network from PoS — different RPC and chain ID (1101)
Uses ETH for gas, not MATIC — bridge ETH from Ethereum
Faster finality than optimistic rollups — ZK proofs instead of fraud proofs
Some opcodes behave differently — minor contract compatibility issues
Growing ecosystem — fewer dApps than PoS currently

Staking

MATIC staking on Ethereum mainnet — validators secure both networks
Delegate to validators — no minimum, rewards vary by validator
Unbonding takes 80 checkpoints (~3-4 days) — funds locked during unbonding
Liquid staking available — stMATIC, MaticX for liquidity while staking

Security

Same security model as Ethereum — private key controls all
Approve tokens carefully — revoke unused approvals at polygonscan.com
Verify contract addresses — scam tokens use similar names
Official bridge is safest — third-party bridges have additional risk
Keep some MATIC for emergencies — stuck tokens without gas is common

02

MATIC/POL Token

05Tokens and DeFi

07Common Issues

08zkEVM Specifics

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