Privacy Pools Review 2026: Ethereum Deposits With Association Sets

Privacy Pools is a privacy protocol on Ethereum built by 0xbow. Users deposit ETH or ERC-20 tokens into a pool and later withdraw them to an address that cannot be easily linked back to the deposit. The project presents this as a compliant way to transact privately, because users can prove their funds belong to an approved set.

In May 2025, the team removed deposit limits from the tool, according to public reporting. Later that year, the team launched v2, which public material describes as a multi-asset pool that adds private payments, swaps and Aave-based yield, across seven chains. The v2 announcement also described a trusted setup ceremony that invited outside contributors to add randomness to the proving keys.

The project says it is non-custodial, does not require KYC, and has no global viewing keys or backdoors. Its terms of use state that users access the protocol independently of 0xbow. The material reviewed does not include a full audit report or a list of team members.

Privacy Pools works like a shared pool. Many users deposit the same asset into one contract, so their deposits are mixed together. When a user deposits, they receive a secret that is needed later to take the funds out, and the secret should be kept private.

When the user withdraws, they generate a zero-knowledge proof. The proof shows that they own a valid deposit and that the deposit belongs to an approved association set, without revealing which deposit is theirs. The funds then arrive at a new address that has no visible link on the public ledger to the original deposit.

The v2 version adds a multi-asset pool design, and public material says it also supports private payments, swaps and yield from Aave. The design is meant to keep users' balances private while still letting the operator screen out illicit funds through the association sets.

Fees are not published in the material reviewed. Users would normally see network gas costs on Ethereum when depositing and withdrawing, and any protocol-level charges would be shown in the official documentation or the interface. Check those sources before using the tool, since the cost of a withdrawal can be significant compared with small deposits.

Audits, the full team and the custody model are not published in the material reviewed. The project says it is non-custodial, which means users control their own funds through the contracts rather than through an intermediary. That reduces counterparty risk but does not remove smart contract risk, since bugs in zero-knowledge circuits or pool code could affect deposits.

Regulatory status is unclear. The project describes itself as compliant and built around association sets, but privacy tools attract scrutiny from regulators and forum critics who argue they can be misused. Users should check the legal position where they live before using the tool.

Privacy tools are not suitable for everyone, and no privacy protocol can guarantee anonymity. Use a fresh wallet, keep your secrets safe, and assume that a determined analyst may still link some activity. Gambling-style risk does not apply here, but anyone using crypto should keep responsible limits in mind.

Privacy Pools is aimed at Ethereum users who want to keep their deposits and withdrawals harder to trace and who are comfortable with proof-based compliance. It is less suited to users who need clear fee schedules, audit reports or a named team before committing funds.