Building decentralized financial institutions and an independent financial system is a truly revolutionary idea. Blockchain, smart contracts, and the ability to create dApps allow each participant to fully control their funds. Decentralized finance is designed to provide access to financial services and operations such as lending, borrowing, liquidity mining, trading, issuing assets and allows you to transact in a trustless manner.

When it comes to finance, you should not forget to keep your identity and your funds confidential. In this article, we will talk about the solutions that are being developed to help improve data privacy in DeFi transactions.

Privacy issues

Users interact with the DeFi ecosystem through smart contracts. Due to the transparency of all data stored in the blockchain, keeping sensitive data in the smart contracts is a bad idea, as the data on the volumes and terms of the transaction is visible to everyone.

Blockchain technology is based on principles that provide a sufficiently high level of anonymization, which is why more and more companies that need a high level of privacy are exploring the possibilities of distributed systems.

Privacy in DeFi means that it is impossible to obtain such data, which can be used to identify a wallet or address owner. We would like to take a closer look at examples of projects and solutions that are working to improve the level of DeFi system members’ privacy.

Private smart contracts

Using the Zether mechanism, users send ETH to a ZSC contract and, in return, receive an equivalent amount in ZTH tokens, which are used for hidden transactions. Zether has also implemented the ability to hide information about the parties at the discretion of the transaction initiator.

Touching upon smart contracts and privacy, it’s worth mentioning the Enigma project, which develops solutions for creating secret smart contracts focused on user data security.

Enigma secret contracts that store blockchain data in encrypted form can interact with each other. Functioning outside the Ethereum network, contract data is fragmented, encrypted, and distributed to network nodes. When data is requested, the nodes provide it without publicly disclosing the information. To ensure data privacy, the Zero-knowledge proof algorithm is used, a modification of which is used in Zcash encryption.

Ensuring users’ security and privacy with smart contracts is especially important, for example, in lending, auctions, or any financial transactions. At the moment, these projects are mainly research activities, but they already have the potential to be useful in ensuring the privacy of the user and their funds.

Mixing technology

The updated version of the service allows mixing ERC-20 — DAI tokens.

Managed by a smart contract, Tornado Cash can remain truly decentralized due to the fact that no centralized party takes over the storage or control of funds during the mixing process.

In May 2020, Tornado Cash developers restricted access to smart contract code changes, which on the one hand, indicates that there is no centralized management authority, and on the other hand, attracts attackers to try and hack the smart contract.

DeFi Privacy Solutions

The developers want to build a DeFi-environment within the Beam network, where CA will be Beam-independent private DeFi-tokens designed to create dApps. Hardfork, together with CA, has also added features to create “scriptless contracts,” where contract details and the transactions themselves remain private, as well as support “atomic swap” on Beam DEX.

Another privacy-oriented DeFi project is Incognito, whose developers intend to ensure the privacy of other blockchains’ tokens. Incognito privacy technology is based on the same principles as Monero. The project focuses on compatibility with other blockchains, offering support for lending and anonymous deposits in “shielded” ETH (pETH), which are backed by ETH itself.

Incognito plans to launch private versions of DeFi platforms that do not support full-fledged smart contracts but allow to create tokens following specific scenarios, which help you build bridges with other smart contract platforms. Thus, in early July, the pKyber platform was released; pKyber’s role is to interact with Kyber DEX through Incognito.

Another project, developing and building bridges between the blockchains, is NIX Bridge. This is a privacy protocol that ensures the privacy of any ERC20 token on a NIX network.


With the advent of DeFi, the popularity of Ethereum has increased dramatically. Today, over $11 billion are blocked in The DeFi ecosystem, which indicates an increased demand for both financial instruments and data from the users of these instruments. Developing solutions that improve user data privacy and security is gaining momentum, which will positively impact the future of decentralized finance.

Disclaimer: The contents of this article are not intended to be financial advice and should not be treated as such. 3commas and its authors do not take any responsibility for your profits or losses after you read this article. The article has been presented to provide readers with general information. There is only personal experience described herein. The user must do their own independent research to make informed decisions regarding their crypto investments.

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