Common Prefix is a team of engineers and scientists committed to pioneering advancements in blockchain technology. We specialize in bridging the gap between academic rigor and industry practices focusing on Layer-1 and Layer-2 technologies, interoperability, scalability, and usability of distributed ledgers.

In partnership with leading networks such as Axelar, Babylon, Celestia, Harmony, MystenLabs and Snowfork we actively utilize our GitHub organization to share cutting-edge projects developed by our team. We believe that open-sourcing projects and ideas cultivates a collaborative environment that rapidly propels the blockchain community forward.

Some of the projects that we're currently building are:

• Axelar light client: An Ethereum prover/verifier implementation of a light client that employs the Sync Committee protocol of Ethereum to bridge events from Ethereum to Axelar with existential honesty assumptions.
• State prover: A simple API for generating proofs from the Ethereum beacon state using a Lodestar node.
• Block roots archive: A caching layer including a data scraper and a server designed to aggregate and provide access to all the block roots within a single Sync Committee period of the Beacon API of Ethereum.
• Axelar <> XRPL Integration: An integration of Axelar with the Ripple Chain consisting of a relayer and the contracts.
• Ancestry Prover: An all-in-one solution for proving that a beacon block is a predecessor of another beacon block.
• Patronum: An Ethereum RPC proxy that verifies RPC responses against given trusted block hashes.
• Kevlar: A CLI tool that utilizes Patronum to run a light client-based RPC Proxy for PoS Ethereum. Kevlar can be used to make Metamask or any RPC-based wallet completely trustless.

Projects developed by us, hosted on other organizations:

• Flare Wraps: A multisig-based ETH <> Flare bridge currently holding more than 3M USD TVL, consisting of a validator and the contracts. Developed in collaboration with Ēnosys,
• Phygitals: A production-ready implementation of the Ermis protocol, that enables users to redeem NFTs on-chain and get the corresponding physical item delivered by the vendor – all without implicating any third-party service. Developed in collaboration with Ēnosys.

Projects we've collaborated on:

• Harmony. The core consensus implementation of the Harmony protocol. We implemented several bug fixes, discovered in our technical report.
• Lens Recommender: A project utilizing the Eigentrust Algorithm to generate multiple reputation rankings for users living on the Lens Social Network.

See what we're up to at commonprefix.com or get in touch at hello@commonprefix.com!