Privacy Pools v2 Brings Private Payments Onchain

Privacy Pools v2 launches across seven chains with private payments, swaps, Aave yield, and zero-knowledge compliance screening for Ethereum users.

Privacy Pools v2 Brings Private Payments Onchain
Privacy Pools v2 Brings Private Payments Onchain

Announced by 0xbow on October 20, 2026, Privacy Pools v2 is live on Ethereum, Arbitrum, Base, OP Mainnet, BNB Chain, Robinhood Chain, and Citrea. The release introduces functionality that allows users to move funds within shielded pools without publicly revealing transaction participants or amounts.

The launch builds on Ethereum's growing emphasis on practical privacy infrastructure. As previously covered by EtherWorld, Vitalik Buterin's support for Privacy Pools highlighted an approach that combines financial confidentiality with mechanisms intended to discourage illicit activity.

Privacy Pools v2 Expands Beyond Private Deposits

The original Privacy Pools protocol allowed users to deposit cryptocurrency into a shielded pool and withdraw it to a different address without exposing a direct onchain connection between the deposit and withdrawal. However, this model had limitations.

Assets could enter and exit the pool, but users could not conduct meaningful financial activity while remaining shielded. Repeated deposits and withdrawals could also reveal behavioral patterns. Privacy Pools v2 introduces private transfers inside the pool itself, allowing funds to move between users without publicly exposing the sender, recipient, or transferred amount.

Users can now send shielded assets directly to another Ethereum-compatible address. If the recipient has not previously used Privacy Pools, the sender can generate a claim link that allows the recipient to register and collect the payment.

The update also introduces private payment requests. Instead of sharing a public wallet address, users can generate a payment link containing one-time cryptographic information. This allows the payer to complete a transaction without necessarily learning the recipient's underlying wallet address.

These improvements follow the broader direction outlined in EtherWorld's coverage of 0xbow's $3.5 million seed funding round, which focused on scaling compliant privacy infrastructure for Ethereum applications. The transition from private withdrawals to private payments could make Privacy Pools more useful for everyday transfers, business payments, and decentralized finance activity.

How Zero-Knowledge Privacy and Compliance Work Together

Privacy Pools v2 relies on zero-knowledge cryptography to validate transactions without revealing the underlying financial information. Within the protocol, shielded balances are represented by cryptographic notes.

Each note records ownership, asset information, and value, while only a cryptographic commitment is published onchain. When users transfer funds, zero-knowledge proofs demonstrate that the transaction is valid and does not create unauthorized value.

Nullifiers prevent the same notes from being spent more than once. This allows transactions to be verified without publicly revealing the notes being spent.

However, Privacy Pools differs from purely anonymity-focused systems through its compliance architecture. The protocol uses an Association Set Provider (ASP) operated by 0xbow to screen deposits and determine which funds are eligible for private transactions.

Each deposit receives a private label inherited by its associated notes. The ASP publishes approved labels, and users must prove that their transactions involve eligible funds without publicly exposing the original deposit.

Importantly, Privacy Pools does not require traditional KYC verification, and the protocol does not provide global viewing keys or universal backdoors. Users retain custody of their assets and can publicly exit the pool without ASP approval, although doing so sacrifices privacy for the affected note.

EtherWorld previously explored Ethereum's broader push toward native privacy, including account abstraction, keyed nonces, and wallet-level privacy infrastructure. Similarly, Vitalik Buterin's discussion of advanced cryptographic techniques highlighted how cryptography could enable more sophisticated forms of confidential computation.

Seven Networks Bring Private Swaps, Yield and Payments

The expansion across seven networks is one of the most significant changes introduced with Privacy Pools v2. The protocol is available on Ethereum mainnet, Arbitrum, OP Mainnet, Base, BNB Chain, Robinhood Chain, and Citrea.

Supported assets vary by network. Ethereum, Arbitrum, OP Mainnet, and Base support ETH, USDC, and USDT, while BNB Chain supports BNB, USDT, U, and FDUSD. Robinhood Chain supports ETH and USDG, and Citrea supports cBTC. However, the availability of swaps and yield differs between networks.

Privacy Pools also supports private token swaps through LI.FI, including routes that can involve different blockchain networks. Users can deposit eligible tokens, swap between supported assets, and withdraw to another wallet or supported destination chain.

Still, the privacy guarantees should be understood within the scope of the shielded system. Deposits, withdrawals, swap routes, and external protocol interactions may expose different forms of information depending on how transactions are executed.

For developers, 0xbow is making these capabilities available through an SDK that can be integrated into wallets, payment applications, and other financial services. This direction aligns with the Ethereum Foundation's zkAPI initiative for private AI payments, which similarly explores separating payment activity from persistent user identities.

What Privacy Pools v2 Means for Ethereum's Privacy Roadmap

Privacy Pools v2 arrives as privacy becomes an increasingly visible part of Ethereum's long-term development strategy. While Ethereum provides transparent and verifiable transaction records, that transparency also makes it possible to track wallet balances, transfers, and financial relationships.

EtherWorld's coverage of Ethereum's updated roadmap examined how privacy has become a more prominent architectural priority alongside scalability and security. Meanwhile, research into encrypted mempools and censorship resistance addresses transaction visibility before inclusion, a different problem from concealing financial activity within applications.

Privacy Pools addresses the application layer by allowing users to perform certain financial operations without publicly exposing the underlying transaction details. The project also connects to Kohaku, an Ethereum privacy initiative intended to help wallet developers integrate shielded transaction capabilities.

As EtherWorld reported in Vitalik Buterin Pushes Ethereum Privacy With Kohaku, the initiative aims to make privacy more accessible through familiar wallet interfaces. 0xbow says Privacy Pools is included in Kohaku's ecosystem, with Ambire among its early adopters.

The company also plans to release a Rust SDK during the fourth quarter of 2026, while support for multisignature and hardware wallets remains under development. These efforts reflect the broader application-layer direction discussed in Buterin's call for more ambitious Ethereum applications, where privacy was identified as an important property of future decentralized infrastructure.


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