An EVM-compatible confidential smart contract platform on Oasis, Oasis Sapphire uses secure enclaves for encrypted state/transactions, built-in randomness, and low-fee, high-throughput dApps powered by ROSE.
Oasis Sapphire is the Oasis Network’s confidential EVM (Mainnet, chainId 23294) that runs Solidity smart contracts inside secure enclaves, keeping calldata and state encrypted while remaining Ethereum-compatible and using ROSE for gas. Primary use cases include privacy-preserving DeFi (sealed-bid auctions, private swaps, MEV-sensitive order flow), selective-disclosure identity/data apps, private gaming/NFTs, and adding on-chain privacy to existing EVM dApps via the Oasis Privacy Layer. Key performance for comparison: ~6s block time, hundreds+ TPS per ParaTime, and sub-cent ROSE gas per transaction on typical workloads.
Oasis Sapphire is unique for delivering end-to-end confidential execution at the EVM level with TEE-backed encryption of inputs, state, and storage, plus privacy-first EVM precompiles (encryption/decryption and secure randomness) while retaining standard Ethereum tooling (MetaMask, Hardhat, Ethers). Its ParaTime architecture isolates workloads for parallel throughput and predictable low fees, providing ~6s finality and <$0.01 average gas versus many L1/L2s that lack built-in privacy or have higher costs. This combination makes Sapphire a practical production choice for privacy-first dApps today and enables cross-chain privacy for existing EVM apps via the Oasis Privacy Layer.
Oasis Sapphire uses ROSE as the gas token for transaction fees. You can obtain ROSE by bridging from other chains or purchasing using thirdweb Bridge.
To bridge ROSE to Oasis Sapphire, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select Oasis Sapphire as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on Oasis Sapphire 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 Oasis Sapphire 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 ROSE on Oasis Sapphire, ensure your wallet is connected to the Oasis Sapphire network, enter the recipient's address, specify the amount of ROSE to send, review the gas fee, and confirm the transaction in your wallet.