Umbra has partnered with Streamflow to bring private token vesting and distribution to Solana, giving projects a way to send vested tokens without exposing transfer details onchain.
The integration uses Umbra’s privacy layer and Arcium’s encrypted execution engine to let Streamflow clients distribute tokens into shielded Umbra wallets. Arcium has been building confidential token infrastructure for Solana, including encrypted transfers and confidential token standards designed to keep transaction data private while still operating onchain.
Streamflow clients will retain access to vesting features such as time based locks, price based conditions, and programmable distribution mechanisms, while the token movement itself occurs privately. Streamflow’s platform supports token vesting, airdrops, staking, token locks, token mints, and token distribution contracts across Solana.
Recipients will receive vested tokens directly into Umbra wallets, adding each private vesting schedule to Umbra’s anonymity pool. The companies said the structure is meant to improve privacy guarantees as more projects and assets move into the shielded ecosystem.
The partnership includes two tracks for Streamflow clients. A standard track will offer preferential default pricing for most teams, while a custom track will target larger volume or specialized distribution needs. Umbra said several high volume discussions are already active, with additional announcements expected.
Umbra founder Kru Shah said the partnership combines Streamflow’s vesting infrastructure with Umbra’s privacy layer, calling it a major step for private token distribution. Streamflow CEO Malisha Stanojevich said onchain privacy is needed for broader mainstream adoption.
Token vesting remains one of the main ways crypto projects distribute allocations to teams, investors, and communities. Umbra said roughly $97 billion in tokens were released through vesting and unlock schedules in 2025, with most of those transfers remaining publicly traceable onchain.
Streamflow has served more than 1.3 million users and more than 40,000 projects. Its infrastructure has also supported price based token locks and other programmable distribution features for Solana projects.
The partnership positions Umbra as a privacy layer for Solana token operations at a time when projects are seeking more confidentiality around distributions, treasury management, and investor allocations. Umbra’s broader system is designed to hide balances, transfers, and wallet activity while keeping private transactions within Solana’s execution environment.