Base implements the B20 standard: a new stage for native tokens, stablecoins, and RWAs
The team behind the Ethereum Layer 2 solution Base has officially activated the B20 standard on the mainnet. This protocol is designed for issuing stablecoins, real-world assets (RWA), and other fungible tokens, significantly expanding the platform's functionality.
Key Features of the B20 Standard
B20 includes built-in mechanisms for controlling asset issuance and circulation. The standard incorporates access roles, supply limits, transfer rules, minting and burning functions, as well as the ability to pause operations and add notes to transactions. This ensures a high level of security and flexibility for issuers.
It is important to note that B20 tokens are fully compatible with assets on the ERC-20 standard. This means they will be supported by existing wallets and trading platforms without the need for additional integrations.
The Base mechanism provides two implementation options: Asset and Stablecoin. The first allows setting between 6 and 18 decimal places, making it suitable for various types of tokens. The second option uses a fixed six decimal places and requires specifying the fiat currency denomination — for example, the US dollar or euro, which is critical for stablecoin issuers.
Implementation Context: Beryl Upgrade and Technical Nuances
B20 is part of the Beryl upgrade, which was activated on the mainnet on June 25, 2026. This update reduced the finalization window for regular withdrawals from seven to five days and added an iteration of the Reth V2 client, improving network performance.
However, the implementation was not without challenges. On June 25 and 26, Base experienced two block production halts — lasting 116 and 20 minutes. According to the team's post-mortem, both incidents were caused by a bug in the sequencer logic. Developers have since strengthened testing to prevent similar failures in the future.
Recall that in February 2026, Base announced a transition from the Optimism technology stack to its own unified architecture. The introduction of B20 is another step toward full autonomy and infrastructure optimization.
Analytical Perspective
The B20 standard is not just a technical update but a strategic move that strengthens Base's position as a platform for institutional issuers. Built-in control mechanisms and compatibility with ERC-20 make it attractive for projects focused on RWA and stablecoins. However, recent outages remind us that even the most advanced solutions require thorough testing before scaling. In the coming months, we will see how quickly the ecosystem adapts to the new standard and what innovations it brings.