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zk Privacy Solution Comparison
zkBob | zk.money | Railgun | Tornado.cash |
zkBob provides everyday privacy to everyday users. Limits, compliant wallet checks, and other security features ensure that zkBob is a safe place for honest users to discreetly transfer stable value.
Different privacy solutions offer different tradeoffs for users seeking anonymity on-chain. Below are some features that set zkBob apart.
A big differentiator between the protocols is zkBob’s use of tokens such as USDC for transactions and fees. With stable pools, transaction fees do not fluctuate for users (hard coded to $0.10 per tx on Polygon/ $0.50 per tx on Optimism). If the actual tx cost is less, the extra amount is collected and dedicated to protocol and user support. In rare cases when it costs more, txs are divided and processed in several transactions.
zkBob pools have the additional utility including the ability to introduce compounding and lost/expired token redistribution. These features on the roadmap will provide future incentives for zkBob users.
Multitransfer is another unique zkBob feature, allowing users to transfer to multiple zk addresses with a single transaction. This is especially useful for employers sending salary payments to many employees. Rather than create proofs and pay fees for each tx, these can be sent in bulk, saving time and overhead costs.
In the table below we explore some technical and operational differences between zkBob, zk.money and Tornado.cash (pre-ban).
Note comparisons were made to show varying technology and zk tech. As zk.money and tornado.cash are no longer in active operation (sunset or banned), zkBob is currently the primary solution for optional privacy.