Overview
- Base deployed Beryl to the Sepolia testnet and set a mainnet activation for Thursday, June 25, 2026, marking the latest step in its independent upgrade cadence.
- Beryl introduces B20, a protocol-level token standard implemented as precompiled contracts in Rust that run inside node software while remaining compatible with the ERC‑20 spec and ERC‑2612 permits.
- The upgrade shortens the common withdrawal route from Base to Ethereum from seven days to five days and includes Reth V2, which cuts node storage needs and allows higher block gas targets.
- An Issuer Toolkit bundled with B20 gives role-based permissions, mint and burn limits, optional supply caps, transfer restrictions, and freeze and seizure capabilities aimed at regulated stablecoin and RWA issuers.
- Base says the B20 code was audited by Base and Spearbit, prediction markets have nudged up the odds of a native Base token to about 28.5% for year-end, and Base plans a further Cobalt upgrade targeted for September.