A secure, affordable, and developer-friendly Ethereum L2 solution, powered by Optimism's open-source OP Stack, designed to democratize Ethereum access and onboard the next billion users.
Or use Base from Claude, Cursor, or any MCP client via Chainstack MCP Server.
The chain is secured by Ethereum staking validators.
Base is an OP Stack L2. Since the Denim upgrade (mainnet, November 5, 2026), its sequencer produces a block every 200 ms, about five blocks per second.
Secure, scalable, and affordable platform for DApp development, with early access to Ethereum features and 10x cost reduction through optimistic rollup architecture, serving as an on-chain hub for Coinbase offerings.
| Consensus | Proof-of-stake (PoS) |
| Public / Private / Permissioned | Public |
| Smart contracts | Yes |
| Smart contract language(s) supported | Solidity, Vyper, Yul, Huff |
| Transaction privacy | No |
| Transaction visibility | All participants have access to all entries ever recorded. |
| Transaction ordering | All validating participants must reach consensus over the order of all transactions that have taken place, irrespective of whether a participant has taken part in a particular transaction or not. |