Base activates B20 token standard for stablecoins and tokenized assets

Base has activated its B20 token standard on the mainnet, enabling developers to issue native stablecoins, tokenized real-world assets, and other fungible tokens without custom ERC-20 smart contracts. The B20 standard went live at 6:00 pm UTC, allowing token creation under the framework introduced in the Beryl upgrade. The protocol includes built-in issuer controls while remaining compatible with ERC-20 wallets and exchanges. B20 supports two token formats: an asset version with six to 18 decimal places and a stablecoin version with a fixed six-decimal format requiring a fiat currency denomination. The standard includes controls for minting, burning, pausing, transfer restrictions, supply limits, and transaction notes. The Beryl upgrade, which introduced B20, was delayed by one day due to the B20 Activation Registry's initialization. This upgrade also reduced the withdrawal period from Base to Ethereum from seven days to five days and integrated Reth V2, optimizing node storage and supporting higher block gas targets. The B20 launch follows recent sequencer outages, with the first incident on June 25 lasting about 116 minutes and a second on June 26 lasting about 20 minutes. Base stated that user funds remained safe during these disruptions.