v1.1.1 - T1 (Bach) Mainnet Network Upgrade
Important
This release is required for the Bach (T1) mainnet network upgrade scheduled for Thursday, Feb 12th 2026 16:00 CET. Node operators must update their nodes, otherwise your nodes will fall out of sync with the network. This release focuses on mainnet-ready gas economics, expiring nonces, and security hardening from recent audits.
The Bach (T1) network upgrade implements three major TIPs:
Security & Bug Fixes
- Addresses security findings from audits hardening access keys, DEX, and transaction pool correctness: : #2528, #2522, #2553, #2521, #2496, #2513
- Fixes
tempo downloaddefaulting to testnet,tempoupGPG verification for older versions, expiring nonce handling ineth_fillTransaction, and genesis nonce key gas charging: #2587, #2557, #2491, #2573
Full Changelog: v1.1.0...v1.1.1