Celestia Labs, the core engineering team behind the modular Layer 1 blockchain Celestia, has acquired the technology and talent of Sovereign Labs — a deal that vertically integrates the modular ecosystem’s best-known application framework into its base-layer developer. Financial terms were not disclosed. Six Sovereign team members join Celestia Labs, headlined by Sovereign co-founder Preston Evans, who steps up as Celestia Labs’ new Chief Technology Officer.

What Celestia Is Actually Buying

Sovereign Labs, founded in 2021 by Cem Ozer and Preston Evans, has been a fixture of the Celestia ecosystem from the start. Its flagship product, the Sovereign SDK, is a framework for building application-specific, high-performance blockchains — and its production credentials are the deal’s real currency. The company says the SDK powers Relay, the top bridge by volume with over $8.5 billion in transfers, and Bullet, a perpetuals exchange clearing orders in 1.2 milliseconds at over 30,000 transactions per second. Combined, the two teams claim more than 25 production blockchains shipped.

The Thesis: General-Purpose Chains Are Hitting Their Ceiling

The strategic logic rests on a market shift the release states plainly: demand for custom chains is rising because general-purpose blockchains can’t deliver the scale and performance next-generation applications need. The evidence cited is hard to argue with — Hyperliquid, the leading decentralized exchange, built its own chain to control latency and order-flow rules, while Polymarket, which processed $6 billion in H1 2025 volume, is migrating to a custom chain to escape congestion. (Notably, Polymarket’s settlement design also drew scrutiny this week in the Stanford manipulation study — infrastructure limitations are becoming that platform’s recurring theme.) Celestia’s bet is that as more applications hit those walls, they’ll pay a specialist partner rather than build in-house.

From Data Layer to Full Stack

The acquisition repositions Celestia Labs from modular data-availability specialist to what CEO Nick White described as a full-stack infrastructure and design partner — spanning Layer 1 through execution and application layers — for companies that need their own blockchains, from agentic payment systems to global exchanges and prediction markets. Evans, in his new CTO role, argued that companies migrating onchain simply cannot replicate in-house the reliability and scale the combined team offers. Celestia Labs brings meaningful resources to the effort, having raised over $155 million from Bain Capital Crypto, Coinbase Ventures, and others.

The deal reads as consolidation with a thesis: the modular blockchain movement’s base-layer pioneer absorbing its most successful application framework, positioning for a market where the flagship apps of crypto — exchanges, bridges, prediction markets — increasingly run on chains built to order. Whether enterprises follow Hyperliquid’s and Polymarket’s lead at scale is the open question the acquisition is designed to answer.

Sources Consulted

Celestia Labs announcement via The Block’s press release channel (The Block notes it does not necessarily endorse statements in hosted announcements); prior series coverage of the Stanford–SMU Polymarket study for context.