Private payments on Solana after Elusiv
Elusiv was Solana's shielded-payments protocol — then it became Arcium. Here's what's actually live for private transfers in 2026: Confidential Transfers, Umbra, and Privacy Cash.
For a couple of years, Elusiv was the answer to "how do I send a private payment on Solana?" — a ZK + MPC shielded pool. Then in 2024 it sunset into withdrawal-only mode, and something unusual happened: the same team rebranded the company into Arcium. The Elusiv product is gone; its team and tech live on — but as general-purpose confidential compute infrastructure, not a payments app. So what actually moves money privately on Solana in 2026?
1. Token-2022 Confidential Transfers — the native option
The confidential transfer extension encrypts token balances and amounts with ElGamal + ZK proofs, live on mainnet since ~April 2025 (with a mid-2025 pause when the proof program was disabled over soundness bugs). It hides amounts, not counterparties — accounts and the fact a transfer happened stay public. A broader "Confidential SPL" standard has been expected; treat its exact ship status as evolving. Best for: native amount-privacy with a built-in auditor key.
2. Umbra — shielded transfers on Arcium
Umbra opened publicly in 2026 with shielded SOL/SPL transfers and swaps, built on top of Arcium's encrypted execution. Its distinguishing feature is a Master Viewing Key hierarchy — private by default, but selectively auditable down to per-address, time-scoped, or single- transaction viewing keys. Best for: shielded transfers where you may need to prove what happened later.
3. Privacy Cash — the ZK mixer
Privacy Cash is the most-used by volume — a ZK mixer (Merkle tree + relayer) with private swaps routed through Jupiter, and $400M+ processed across multiple audits. It's the closest thing to a classic shielded pool still operating at scale, and markets an OFAC-aware / selective-disclosure design. Best for: breaking the on-chain link between sender and receiver.
Worth noting what isn't here: Light Protocol began as Tornado-style ZK privacy in 2021 but pivoted entirely to ZK Compression (state-cost scaling, not privacy). Early mixers like Otter Cash never gained traction. The field consolidated.
The compliance shift underneath all of it
The reason 2026's private-payment tools look different from 2021's mixers is regulatory. Tornado Cash was OFAC-sanctioned in 2022, then delisted in 2025 after an appellate ruling that Treasury overreached on sanctioning immutable open-source contracts; by 2026 Treasury acknowledged mixers have legitimate uses. But the chill was real, and it shaped design: every serious Solana privacy project now ships viewing keys, selective disclosure, and optional compliance hooks. Pure, unaccountable mixing carries real sanctions and relayer liability — so "compliant privacy" became the dominant model, not anonymity for its own sake.
The honest read
Private payments on Solana are healthier than the Elusiv shutdown made them look — but the shape changed. The native path (confidential transfers) is amount-only and had a rocky 2025; the shielded-pool path (Privacy Cash, Umbra) works but leans hard on selective disclosure to stay on the right side of regulators. There is no "just make it private" button that's also unaccountable and legally safe — and after Tornado, there probably won't be. Pick the tool by what you need to hide and what you need to be able to prove later.
References
Elusiv didn't fail so much as graduate — into Arcium. What it left behind is a private-payments stack that's smaller, more compliant, and finally honest about the trade between privacy and accountability.