Umbra and Streamflow launched private token vesting on Solana to hide wallet addresses and unlock schedules.
Solana News
Solana (SOL) privacy protocol Umbra and token distribution platform Streamflow have launched private token vesting on Solana, letting projects distribute tokens to recipients without publicly exposing wallet addresses, allocation sizes, or unlock timelines on-chain. The companies shared the announcement exclusively with The Block on May 26.
The integration runs on Arcium's encrypted execution engine, which handles the confidential computation behind each vesting transaction. Streamflow clients can continue using the platform's existing time-based locks and price-based release conditions while keeping the actual token transfers private. Vested tokens are sent directly into recipients' Umbra wallets, and each new vesting schedule contributes to Umbra's shared anonymity pool.
A $97B Market Largely Exposed On-Chain
Token vesting is the primary mechanism crypto projects use to release tokens to teams, investors, and communities over time. In 2025, approximately $97 billion in tokens were distributed through vesting and unlock schedules, with nearly all of those transfers fully visible and traceable on-chain, according to both companies. That level of transparency exposes recipient wallet addresses, unlock timelines, and allocation sizes to anyone monitoring the chain, creating front-running opportunities that projects have historically had no protocol-level tools to prevent.
Streamflow recently committed to building exclusively on Solana and serves more than 1.3 million users and over 40,000 projects on the chain. Its existing product suite includes no-code vesting, token locks, streaming payments, airdrops, and staking tools. Clients can access the private vesting integration through two service tracks: a standard track with preferential pricing for most teams, and a custom track for higher-volume or specialized requirements.
Several high-volume client conversations are already active, and additional project announcements are expected in the coming weeks, both companies said. Streamflow CEO Malisha Stanojevic described on-chain privacy as the next frontier needed for broader mainstream adoption of crypto infrastructure. Umbra founder Kru Shah called the partnership a landmark moment for the industry.
Umbra opened public access to its Solana privacy wallet in March 2026 and raised $155 million in initial coin offering (ICO) commitments on MetaDAO in October 2025. The project described that raise as one of the most successful on the platform at that time.
The integration targets a structural gap in how token projects manage distribution risk. As vesting schedules become standard and publicly readable on-chain, shielding recipient identities and timing from market observers could alter how teams and early investors manage positioning around token releases. The product positions Umbra and Streamflow as dedicated infrastructure for confidential TokenVesting distribution on Solana, where high-volume unlock activity makes the chain a natural environment to test the approach at scale.
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