Base activates B20 token standard for stablecoins and RWAs
In brief
- Base B20 standard activates Wednesday at 6 pm UTC on mainnet
- Developers create stablecoins, RWAs, and fungible tokens without custom ERC-20 contracts
- B20 includes built-in issuer controls: supply limits, transfer rules, minting, burning, pausing
- Standard supports asset and stablecoin variants with configurable decimals
- Beryl upgrade shortened withdrawal periods from seven to five days
Native Token Creation Simplified
The activation will enable developers to use Base's native token standard to create stablecoins, RWAs, tokenized equities and other fungible tokens without requiring them to build and audit custom ERC-20 contracts. The standard supports two variants: asset and stablecoin, with different decimal configurations to suit different use cases.
B20 tokens are compatible with standard ERC-20 tokens but come with built-in issuer controls. Those features include supply limits, transfer rules, minting, burning, pausing and transaction notes. This design reduces friction for token issuers while maintaining interoperability with existing DeFi infrastructure.
Beryl Upgrade and Recent Outages
The B20 activation arrives after the Beryl upgrade shortened withdrawal waiting periods from seven days to five days. The Beryl rollout itself faced complications. Base experienced a sequencer outage on June 25 caused by a consensus issue and invalid block sequencing, halting block production for nearly two hours before recovery.
A sequencer bug triggered back-to-back outages on June 25 and June 26, lasting roughly 116 minutes and 20 minutes respectively. The Beryl upgrade was delayed by one day due to a separate B20 activation registry timing issue. Despite these setbacks, the network recovered and development on B20 integration has proceeded.
What's Next
Developers can now begin building on B20 once the standard goes live Wednesday evening. The simplified token creation path could accelerate adoption of stablecoins and RWA projects on Base, removing a technical barrier that previously required custom contract development and auditing.
Frequently asked questions
What is the B20 token standard?
B20 is Base's native token standard that enables developers to create stablecoins, tokenized real-world assets, and other fungible tokens without building custom ERC-20 contracts. It includes built-in issuer controls like supply limits, transfer rules, minting, burning, and pausing.
How does B20 differ from ERC-20?
B20 tokens are fully compatible with standard ERC-20 tokens but come with pre-built issuer controls, eliminating the need for custom contract development and auditing. ERC-20 requires developers to build these features from scratch.
When does B20 go live?
Base is scheduled to activate the B20 token standard on mainnet at 6 pm UTC on Wednesday. The standard was introduced as part of the Beryl upgrade that went live on June 26.
