Cloak

C4 Brazil

A privacy layer for Solana enabling confidential transactions through decentralized pools and miner-driven anonymity sets, protecting users from transaction tracing.

Team

Arthur Bretas

Marcelo Feitoza

Matheus Macedo Santos

Victor Carvalho

Archer Exchange

C4 · India

An MEV-resistant decentralized exchange on Solana using dual batch flow auctions to offer competitive pricing and reduce latency races.

Capitola Labs

C4 · United States

Capitola Labs is a product-led research and development firm building novel information finance applications. Capitola Labs’ first product is Vistadex, a full-stack RFQ prediction markets platform on Solana enabling users to trade all events listed across major venues at the best price.

Credible

C4 · United Arab Emirates

A stablecoin-powered remittance rail on Solana for cross-border business payments, offering guaranteed FX rates and instant settlement.