Privacy Boost Launches on OP Mainnet with ZK-TEE Hybrid Solution

**Critical deadline approaching for OP Stack operators** op-geth will be deprecated on May 31st, requiring all OP Stack chain operators to transition to op-reth validator nodes. **Why start now:** - Node synchronization takes significant time - snapshots should be prepared in advance - Running validators carries no risk, eliminating the need to wait for devnet testing - Early deployment allows time to identify and resolve network-specific issues Operators should begin the migration process immediately to ensure a smooth transition before the deadline. For complete migration instructions, see the [op-geth deprecation docs](https://docs.optimism.io/notices/op-geth-deprecation)

Re7 Capital has introduced **mRe7ETH**, an ETH-denominated investment product on OP Mainnet targeting institutional allocators. **Key Details:** - Product accessible through Midas platform - Expands DeFi product offerings on OP Mainnet - Reflects growing DeFi activity in the ecosystem *Note: Re7 operates independently of Optimism Foundation and OP Labs. The Foundation has committed ETH to Re7's yield strategy and holds a financial interest. Digital asset protocols carry risks—conduct thorough research before participating.*

Optimism has launched a **stake-based transaction ordering experiment** on OP Mainnet, following initial testing on Sepolia. **How it works:** - Users who stake 100k OP tokens gain top-of-block transaction access - All stakers receive equal priority within this tier - Transactions are ordered strictly first-in, first-out (FIFO) among stakers - This represents Phase 1 of multiple planned sequencer experiments **Available resources:** - [Full technical breakdown](https://www.optimism.io/blog/stake-based-transaction-ordering-a-new-experiment-on-op-mainnet) - [Documentation](https://docs.optimism.io/notices/stake-based-priority-ordering) - [Security disclosure](https://docs.optimism.io/public/disclosures/stake-based-priority-ordering-disclosure.pdf) - [Governance proposal](https://gov.optimism.io/t/upgrade-proposal-stake-based-priority-ordering-experiment/10655) - [Staking contract code](https://github.com/ethereum-optimism/optimism/blob/develop/packages/contracts-bedrock/src/periphery/staking/PolicyEngineStaking.sol) - [Audit report](https://github.com/ethereum-optimism/optimism/blob/develop/docs/security-reviews/2026_03-PolicyEngineStaking-Cantina.pdf) The team will monitor results and share learnings from the Sepolia testnet deployment.

**OP Mainnet is actively listening to community input regarding Ether.fi's upcoming integration.** The Ethereum scaling solution has acknowledged significant community discussion about bringing Ether.fi to its network. In a thread, OP Mainnet emphasized their commitment to hearing user concerns and feedback. This follows previous announcements highlighting Ether.fi's real utility and strong performance metrics, with the integration expected to arrive soon on OP Mainnet. **Key Points:** - Community engagement is being prioritized during the integration process - Ether.fi's proven track record was previously highlighted by OP Mainnet - The collaboration aims to enhance the Ethereum scaling ecosystem The response demonstrates OP Mainnet's community-first approach to major protocol integrations.