# Polygon zkEVM RPC Node Ethereum-Secured ZK Scaling Connect to Polygon zkEVM, a zero-knowledge Ethereum rollup with full EVM equivalence and Ethereum-grade security. Our high-performance RPC infrastructure powers DeFi, NFT marketplaces, gaming and any Web3 app that needs ZK-level finality on Chain ID 1101. [Documentation](https://docs-rpc.crypto-chief.com/) [Get a free endpoint ](https://auth.crypto-chief.com/registration) ##### 5 M+ Requests per Day ##### 99.9 % Network Uptime ##### < 100 ms Average Response Time ##### 24/7 Technical Support ## Specification Polygon zkEVM Network Technical characteristics and available endpoints ![Polygon zkEVM (ETH)](/img/protocols/polygon_zkevm.svg) ### Polygon zkEVM (ETH) Mainnet & Cardona Testnet Support Chain ID 1101 Protocol HTTPS / WSS Uptime 99.9% Block Time \~2-5s Consensus ZK Rollup EVM Compatible Yes (equivalent) Polygon zkEVM is a zero-knowledge Ethereum rollup built by Polygon Labs. It delivers full EVM equivalence (the same opcodes, gas semantics and tooling as Ethereum mainnet) with the security of validity proofs submitted to L1\. The result: Ethereum-grade security, lower fees and faster finality than optimistic rollups. #### Key capabilities: - Full EVM equivalence — bytecode-level compatibility - Validity proofs (zk-SNARKs) for trustless security - No 7-day withdrawal window — finality is cryptographic - Lower fees than Ethereum L1 - Decentralized sequencer roadmap - Works with every Ethereum dev tool (Hardhat, Foundry, Remix) #### 🔗 RPC Endpoints HTTPS `https://rpc.crypto-chief.com/polygon-zkevm/{YOUR_API_KEY}` WSS `wss://rpc.crypto-chief.com/polygon-zkevm/ws/{YOUR_API_KEY}` Replace {YOUR\_API\_KEY} with your actual API key from the dashboard. ## What is a Polygon zkEVM RPC Node? Zero-knowledge proven Ethereum scaling A Polygon zkEVM RPC node lets your application talk to the zkEVM rollup using the standard Ethereum JSON-RPC interface. Because zkEVM is bytecode-equivalent to Ethereum, the same contracts, wallets, RPC methods and dev tooling work without modification. ### zk vs optimistic rollups Optimistic rollups (Arbitrum, Optimism, Base) assume transactions are valid and rely on a challenge window — typically 7 days — to dispute fraud. zk rollups like Polygon zkEVM prove validity cryptographically, so finality on L1 is reached in hours, not days, and withdrawals can be near-instant once the proof is verified. **Why teams choose Polygon zkEVM:** - **EVM equivalence** — same tooling, no contract rewrites - **Cryptographic finality** — no fraud-proof challenge period - **Lower L1 footprint** — proofs are compact and cheap to verify - **Composability** — interoperates with Polygon's broader ecosystem ## Technical Documentation Quick start for developers ### Supported RPC Methods Polygon zkEVM exposes the standard Ethereum JSON-RPC API. Our gateway supports the full surface, including subscriptions over WebSocket and historical state queries. - **eth\_blockNumber** — latest block - **eth\_getBalance** — account balance - **eth\_call** — read-only contract calls - **eth\_sendRawTransaction** — broadcast signed txs - **eth\_getLogs** — events and contract logs - **eth\_subscribe** — real-time block/log streams ### Code Examples 💻 #### JavaScript (ethers.js) — zkEVM Connection: ``` import { ethers } from 'ethers'; const provider = new ethers.JsonRpcProvider('https://rpc.crypto-chief.com/polygon-zkevm/YOUR_API_KEY'); const network = await provider.getNetwork(); console.log('Chain ID:', network.chainId); // 1101 ``` 💻 #### Python (web3.py) — zkEVM Setup: ``` from web3 import Web3 w3 = Web3(Web3.HTTPProvider('https://rpc.crypto-chief.com/polygon-zkevm/YOUR_API_KEY')) print('Chain ID:', w3.eth.chain_id) # 1101 print('Block:', w3.eth.block_number) ``` 💻 #### WebSocket — Real-Time zkEVM Updates: ``` const provider = new ethers.WebSocketProvider('wss://rpc.crypto-chief.com/polygon-zkevm/ws/YOUR_API_KEY'); provider.on('block', n => console.log('New zkEVM block:', n)); ``` ## Why choose us? High-performance Polygon zkEVM RPC infrastructure with enterprise-grade reliability for production Web3 applications. ### Enterprise reliability Globally distributed nodes with automatic failover and 99.9%+ uptime — built for production traffic at any scale. ### Low latency Regional routing ensures sub-100ms response times across North America, Europe and Asia for your dApp users. ### Horizontal scaling Distributed architecture and intelligent caching handle traffic spikes without manual intervention or downtime. ### Real-time monitoring Track request volume, latency, error rates and per-endpoint health from your dashboard in real time. ### Secure access HTTPS/WSS encryption everywhere, scoped API keys, IP/domain whitelists and audit-logged operations. ### Developer-friendly Standard JSON-RPC, REST and WebSocket protocols compatible with every major SDK and wallet library. ## Examples of Use Apps that need Ethereum-grade security with lower fees and faster finality. Polygon zkEVM is the right choice when your app needs cryptographic finality and Ethereum equivalence — particularly for high-value DeFi, institutional flows, and bridging use cases. #### Institutional DeFi Validity proofs eliminate the 7-day optimistic challenge window — important for institutional treasuries and structured products. #### Fast bridge-out flows Once a batch is proven, L1 withdrawals can settle in hours rather than days. Better UX for users moving liquidity. #### NFT marketplaces EVM equivalence means OpenSea-style royalty enforcement and ERC-721/1155 logic Just Works. #### High-value DeFi AMMs, lending markets and perps where you want cryptographic, not economic, security guarantees. #### Cross-chain apps Combine zkEVM with Polygon PoS and other L2s for a multi-chain product without learning new tooling. #### On-chain analytics Archive and trace methods give analytics platforms full visibility into historical state and execution traces. ## Got questions? we are here to help ## What is Polygon zkEVM? Polygon zkEVM is a zero-knowledge rollup that scales Ethereum with full EVM equivalence. It batches L2 transactions and submits validity proofs to Ethereum mainnet for cryptographic security. ## What is the Chain ID? Polygon zkEVM Mainnet uses Chain ID 1101\. The Cardona testnet uses Chain ID 2442. ## How is it different from Polygon PoS? Polygon PoS (Chain ID 137) is a sidechain with its own validator set. Polygon zkEVM (Chain ID 1101) is a zk rollup that derives security from Ethereum L1 via validity proofs. Same brand, very different security models. ## Do I need to rewrite my Ethereum contracts? No — Polygon zkEVM is bytecode-equivalent to Ethereum. Existing contracts compile and deploy without changes. ## How fast are L1 withdrawals? Withdrawals settle once the validity proof for the batch is verified on Ethereum — typically in hours, not the 7-day window of optimistic rollups. ## Is the Cardona testnet supported? Yes — testnet endpoints are available for development. Check your dashboard for the Cardona testnet RPC URL. ## Pricing that grows with your needs. ### Free Start building on Web3 — no credit card. ##### $0 - 5 reqs/sec RPC - 5 reqs/min Unified API - 1 req/day AML - Ultimate chains - WSS, Statistics - Community support [Get started ](https://auth.crypto-chief.com/registration) ### Pay for use Flexible pay-as-you-go for any workload. ##### From $10 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started](https://auth.crypto-chief.com/registration) ### Subscription From $500 monthly plus 20% extra value. ##### From $500 - 400 reqs/sec RPC - 300 reqs/min Unified API - 5 reqs/sec AML - EventStream - Ultimate chains - WSS, Whitelists, Statistics - Support portal [Get started ](https://auth.crypto-chief.com/registration) ### Enterprise Tailored solution for expert builders ##### Custom terms All Subscription features plus: - Flexible rate limits - Engineering team support - Custom SLA - Personal manager [Contact Sales ](/contact/)