A high-performance Layer 2 testnet built on Optimism’s OP Stack, EVM-compatible for BNB Chain, offering low fees with tBNB and high-throughput dApp testing.
opBNB Testnet is a public, EVM-equivalent Optimistic Rollup built with the OP Stack and anchored to BNB Smart Chain, using tBNB as the native gas for safe, low-cost experimentation. It’s used to deploy and benchmark dApps, bridges, games, and social/DeFi protocols before mainnet, with design targets of about 1-second blocks, up to ~4k+ TPS, and sub-cent effective fees (negligible in tBNB on testnet) that enable realistic load and UX testing.
opBNB Testnet stands out by pairing OP Stack compatibility with BNB Smart Chain data availability, delivering lower fees and faster blocks (about 1 second) than many Ethereum L2s and offering a high block gas limit (~100M) for batch-heavy or high-activity workloads. Using tBNB for gas and inheriting BNB Chain tooling/liquidity, it targets ~4k+ TPS and sub-cent costs, making it ideal for high-throughput use cases like gaming, microtransactions, and social dApps compared to peers.
opBNB Testnet uses tBNB as the gas token for transaction fees. You can obtain tBNB by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).
To bridge tBNB to opBNB Testnet, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select opBNB Testnet as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on opBNB Testnet you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.
To add opBNB Testnet to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.
To send tBNB on opBNB Testnet, ensure your wallet is connected to the opBNB Testnet network, enter the recipient's address, specify the amount of tBNB to send, review the gas fee, and confirm the transaction in your wallet.