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Important Base Upgrade Delayed After Consecutive Network Outages

The B20 token standard on Base was supposed to open for issuers on June 26, but the chain experienced its second outage in two days, delaying the B20 token launch.

The network completed the Beryl upgrade on June 25, which introduced B20 along with faster withdrawals and lighter node software. Activation of B20 issuance depends on a separate registry that Base has not confirmed is active.

Consecutive Outages Raise Sequencer Concerns

Block production on Base encountered issues on June 26, a few hours before B20 was scheduled to go live at 18:00 UTC. The team reported a chain halt with similar symptoms to the previous day and recovered blocks within about 15 minutes.

The day before, an invalid block caused the sequencer to halt at block 47,806,542 and stopped production for nearly two hours. Recovery in both incidents required node operators in the ecosystem to restart their machines.

Neither outage affected user funds, as funds remain stored on Ethereum. However, these repeated failures once again highlight the sequencer, the single machine run by Coinbase to order transactions on Base.

Base achieved Stage 1 decentralization in 2025 with fault proofs and a 10-member security council. This change strengthened proofs and upgrades but does not apply to the single sequencer that experienced the outages.

The network operated for nearly two years without issues, until a 20-minute outage in August 2025 marked the first sign of sequencer centralization risk. This June outage affected the largest Ethereum layer-2, which holds approximately $4.00 billion in funds, according to DefiLlama.

B20 Launch Awaits Activation Registry

B20 has been integrated directly into Base, Coinbase's layer-2 network, as node software rather than a deployed contract. The standard mimics ERC-20, so wallets and exchanges do not need to make changes.

Base documentation states B20 issuance was planned for 18:00 UTC on June 26, then takes up to one hour for the activation registry to be turned on. Until this process is active, any deployment will fail and be reverted.

The standard targets stablecoin and real-world asset issuers with features such as supply limits, roles, and built-in transfer policies. Base does not yet have a native token, but now offers itself as a venue for issuing new tokens.

Beryl also shortens the formal withdrawal time to Ethereum from seven days to five days, enabling faster capital movement for bridging providers.

What to Watch

Base has promised to release a full post-mortem analysis of the consensus bug that caused both outages. Whether they will activate B20 before fixing these recurring issues will test Base's scaling roadmap targeting institutional issuers.