AltLayer supports Gattaca's based rollup stack

TL;DR → Gattaca has developed a based rollup stack that transforms an OP stack rollup into a based rollup with pre-confirmations. Get strong transaction guarantees in milliseconds while enjoying full Ethereum security! AltLayer now supports Gattaca’s based rollups.

Gattaca, built by the team behind major Ethereum block builder Titan builder, is transforming OP stack rollups into “based rollups” to enhance reliability, performance, and liveness guarantees with its “overlay” layer. We are excited to announce that AltLayer’s RaaS users deploying on Optimism’s OP stack can benefit from these higher-performing based sequencing capabilities.

Let us take a step back to explore based rollups and how they benefit rollup users.

Understanding Based Rollups

Based rollups use Ethereum validators to determine transaction ordering, rather than relying on external sequencers. This approach leverages Ethereum’s decentralized validator network to provide stronger liveness guarantees compared to single-node sequencer setups that suffer from centralization risks. These based rollups will unlock shared sequencing across multiple rollups, and in turn, synchronous composability across the ecosystem.

Ethereum validators include rollup transactions every 12 seconds when new blocks are created. Your rollup’s transaction sequencing is delegated by Ethereum’s proposers to a decentralized set of sequencers, i.e. they’re “based” on Ethereum.

The Gattaca overlay powers AltLayer’s OP Stack rollups

Moreover, the Gattaca overlay introduces an intermediate confirmation layer that allows much faster confirmation of transactions. Rollup blocks are sliced into 200ms fragments (Frags), which the rotating sequencer “confirms” and gossips, thereby providing transaction preconfirmations every 200ms rather than the full block time. Think of it as assurance, like getting a bank’s transaction confirmation receipt even though the funds may take a few days to settle in the bank’s back office.

Gattaca has already released the Phase 1 roadmap, which shows huge promise to create a highly performant based rollup leveraging OP Stack.

This design ensures fast transactions, smoother UX, and economic security while plugging in gaps like liveness failures or regulatory issues caused by centralized sequencers. More specifically, users can be assured of:

• Decentralized sequencing that can’t be tampered with
• MEV protection through Ethereum’s proposer-builder separation, which handles extraction more fairly and transparently
• Cross-rollup interoperability
• Reliable speed for latency-sensitive dApps
• Guaranteed liveness linked to Ethereum

Moreover, an AltLayer-provisioned Gattaca rollup will feature built-in redundancy and security measures to ensure robustness and reliability including RPC redundancy, rate limiting and load protection, and 24 x 7 monitoring & system health checks.

Transform your OP Stack rollup with Gattaca Overlay, and empower your users with speed, scale and reliability. Get in touch with [email protected]

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AltLayer supports Gattaca’s based rollup stack was originally published in AltLayer on Medium, where people are continuing the conversation by highlighting and responding to this story.