Umbra Opens to the Public, Launching Solana’s First Private Wallet Powered by Arcium

Umbra opened its private wallet to the public, making private sending, swaps, and compliance tools available to every Solana user for the first time. Built on Arcium’s encrypted execution engine, Umbra performs computations over fully encrypted data — an entirely new form of computing, powered by cryptography.

The transparent nature of Solana and other public blockchains has long been a critical barrier to adoption. Existing privacy solutions rely on obfuscation, routing transactions through centralized intermediaries which introduce single points of failure, or use Zero Knowledge (ZK)-based encryption which cannot be applied to applications where multiple parties are transacting. Arcium’s infrastructure changes that: trustless encrypted execution means that no single party can access the underlying information at any point in the process.

The first private wallet for everyday use, Umbra is built for anyone who has felt exposed transacting on-chain: traders who want to ensure their strategies stay confidential, businesses that want to shield operations from competitors, and institutions hesitant to move finance on-chain due to the absence of compliance infrastructure. At launch, Umbra users can send assets with the sender, recipient, and amount fully shielded, and swap tokens without revealing trade size, position, or intent while maintaining confidentiality on-chain.

Alongside the wallet, Umbra is releasing the Umbra SDK, a ZK-based anonymity stack that, along with extending Arcium’s generalized privacy infrastructure, powers the Umbra Wallet. The wallet also features a full compliance stack, including viewing keys, risk screening, and geo-blocking, so privacy and regulatory compliance work together rather than in opposition. Over the next few weeks, Umbra will be announcing several projects and teams integrating the SDK.

Kru, Co-founder of Umbra, said, “Finance is deeply personal, yet on-chain it has always been public by default. Every move you make is public, permanent, and traceable by anyone. Every tool that came before offered a workaround, not a solution. Umbra is the first system to change that — making privacy persistent, expressive, and usable by default. ”

Umbra’s launch is the culmination of a journey that began with one of the most significant fundraises in decentralized finance. In October 2025, Umbra received over $150 million in commitments on MetaDAO, attracting more than 10,000 participants, signalling how deeply the market has been waiting for on-chain privacy.

Yannik Schrade, CEO of Arcium, said, “We are living through a defining moment for privacy. The conversation has never been louder and the technology is finally ready. Umbra is the initial proof of what becomes possible when you build financial infrastructure powered by encrypted compute.”

The launch is also the first major proof point for Arcium’s encrypted execution infrastructure, which has been growing since its Mainnet Alpha launch in February. Projects including Melee, Bench, and Crafts are building toward their own launches on the network. The Umbra SDK extends Arcium’s infrastructure further, opening a wider spectrum of privacy tools to every developer on Solana.

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