• Two 5090s can prove L1 blocks.

• Layerswap discloses a bridge bug.

• Trails introduces universal intents.

• Lighthouse v8.0.1 hotfix released.

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The ZKsync Airbender open-source prover is now capable of proving every Ethereum L1 EVM block using just two NVIDIA RTX 5090 GPUs. The milestone, announced ahead of the ethproofs.day demo, significantly reduces the hardware requirements from previous benchmarks of a single H100 GPU, making home-proving on consumer-grade hardware more feasible. Airbender is a high-performance RISC-V-based zkVM, enabling real-time settlement and cross-chain coordination, supporting local proof generation, and dramatically reducing ZKsync proving costs to just $0.0001 per transfer.

Layerswap, a cross-chain bridge and on- and off-ramp provider, disclosed a bug in its application that allowed users to swap or bridge stablecoins to ETH at a 1:1 ratio. One user exploited the flaw and withdrew over 80 ETH using just 80 DAI. Layerswap stated that the developer responsible for the bug is no longer with the company. Layerswap sent an onchain message to the user, offering a 10% white-hat bounty in exchange for returning the funds. The user ultimately sent back the requested ETH. Layerswap enables transfers between centralized exchanges and L2 networks, as well as cross-chain bridging between supported chains.

Trails introduced its universal intents platform for enabling 1-click transactions across any chain, any token, and any wallet. The platform allows users to access their aggregate spending power across all their wallets. Trails features a gasless experience, allowing users to pay transaction fees using any permit-compatible ERC20 token. For developers, Trails offers a plug-and-play widget and the Trails Intents API for easy integration into their apps, including gasless HTTP payment authentications using x402. The platform also features integrations with Circle CCTP transfers and Katana yield vaults.

Sigma Prime released Lighthouse v8.0.1 as a hotfix containing several bug fixes and performance improvements, including a change that fetches checkpoint blobs from p2p peers. Ethereum nodes running Lighthouse must upgrade to v8.0.1 ahead of the Fusaka upgrade on December 3, 2025.

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