Two stablecoin infrastructure changes landed on June 25 and 26: a new protocol-native token standard shipped on Base alongside two sequencer failures, and Spark seeded shared stablecoin swap liquidity onto Uniswap v4. Base: The Beryl hard fork activated on June 26 at 18:00 UTC, introducing B20, a protocol-native token standard for stablecoin and real-world asset issuers. B20 tokens run as Rust precompiles inside Base's node software rather than as deployed smart contracts, and ship with role-based permissions, mint and burn controls, transfer restrictions, and freeze and seizure tools for regulated issuers. The upgrade also cuts the standard single-proof withdrawal window from Base to Ethereum from seven days to five, and integrates Reth V2, which Base says reduces node storage by up to 50 percent. On June 25, hours before Beryl was originally scheduled, block production halted for approximately two hours after block 47,806,542 when a consensus fault caused an invalid block to enter the sequencing pipeline. The chain halted a second time on June 26 with the same signature, nodes stuck at the same block. Both halts required manual node restarts to restore syncing across the ecosystem. The root cause has been identified but no post-mortem has been published. As a consequence, the B20 Activation Registry mainnet enablement was postponed with no revised date. Developers cannot deploy B20 tokens until the registry comes online. Spark / Uniswap: On June 25, Spark deployed approximately $150 million in stablecoin liquidity across two Uniswap v4 pools on Ethereum mainnet. The pools pair Sky's USDS against Tether's USDT and PayPal's PYUSD. The structure is designed as shared settlement infrastructure so that banks, fintechs, and payment firms entering stablecoin issuance can access a single pooled system rather than each bootstrapping isolated liquidity and inventory management. Spark functions as the orchestration layer controlling allocation governance; Uniswap v4 supplies the programmable AMM architecture. A DualPool hook allowing idle capital to move into yield strategies between trades is planned for a later phase pending a separate security review.