What are Zero Knowledge Protocols in Blockchain: Explained

The Zero Knowledge (ZK) protocol is a privacy-first verification method that allows two parties to engage without revealing any personal information in order to complete a transaction. In the recent days, the discussion about these ZK protocols has intensified in the blockchain space. For example, recently, former Tornado Cash developer Amin Soleimani said he was building a new crypto mixer platform that would allow users to verify their identities through zero knowledge proofs. With this, users will be able to use the upcoming crypto mixer without sharing any personal details like phone number or email ID to prove that they are not associated with any notorious cyber criminal group.

The ZK protocol essentially gets all transactions secured on the blockchain through cryptography – which is a way of protecting information within complex code to prevent it from being hacked against bad actors.

A ZK verification usually takes place between two parties – the Proposer and the Verifier.

In the active ZK protocol, originators need to confirm that they have knowledge of the information they are trying to access, without revealing any details about their identity.

Here’s how the ZK protocols work

Binance Academy said in a post that completeness and soundness are two criteria that validators need to verify in order to validate their access to a validator.

To meet the completeness criteria, the proposer will need to provide accurate relevant information about the subject.

For a robustness check, the proposer must be able to infer whether the proposer actually has the required information.

“Zero-knowledge protocols work by using clever mathematical techniques and interactive processes. It is a way to build trust and maintain privacy at the same time,” blockchain architect Rohas Nagpal told Gadgets 360. Blockchains will become more popular as features as they increase privacy and security while increasing the scalability of networks.

ZK protocol use cases

Websites and blockchain-enabled DApps can implement the ZK protocol to eliminate the need for users to divulge personal credentials to enter their ecosystem.
The Zcash cryptocurrency uses zero-knowledge proofs to facilitate transactions with an additional layer of privacy and anonymity. To process transactions in the Zcash altcoin, the sender and recipient addresses as well as the transaction amount are hidden from the public blockchain.

More Web3 platforms are now incorporating the ZK protocol to verify that their users are neither bots nor unauthorized to access its platform. Not only can the ZK protocol help developers save costs, but it can also add more security on transactions.

Worldcoin, a crypto unicorn, is using zero-knowledge cryptography in a software development kit it offers to blockchain developers.

ZK protocols can also add more security and privacy to file system control, storage protection, and data security.

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