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Robinhood appears to be stepping into one of crypto’s most controversial corners: privacy. The retail trading platform is reportedly developing its first privacy protocol built on zero-knowledge proof technology, which would allow users to make private deposits, swaps, and withdrawals.
Zero-knowledge proofs let one party prove to another that a statement is true without revealing any underlying information. Projects like Zcash pioneered ZK-based privacy in blockchain transactions, and more recently, zkSync and other layer-2 scaling solutions have used ZK proofs primarily for throughput improvements on Ethereum.
Robinhood currently supports cross-chain swaps across networks including Ethereum, Solana, and Polygon. None of those existing swap features include ZK-based anonymity layers. The platform also lists the ZK token associated with zkSync for trading on its European platforms, but that’s a tradeable asset, not a protocol integration.
Robinhood has been expanding its crypto footprint. The company launched Robinhood Chain for tokenized assets and rolled out a non-custodial wallet that gives users direct control over their private keys.
Robinhood, as a publicly traded company subject to SEC oversight and anti-money laundering regulations, would need to thread a remarkably small needle. ZK technology can be designed to allow selective disclosure to authorized parties.
Chainway, Aztec Network, and others are building privacy-preserving infrastructure on Ethereum. Centralized exchanges like Kraken and Coinbase have explored various forms of enhanced privacy features, though none have gone as far as launching a full ZK-based privacy protocol.
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