This article introduces ZKP-based applications such as Polygon zkEVM and Mina Protocol, as well as the application of ZKP in practical scenarios such as privacy payments, decentralized authentication, and financial proofs.
Article Title: / Zero Knowledge Proofs Token: The New Privacy Standard in Crypto
What is zk-SNARKs?
zk-SNARKs (Zero-Knowledge Proof) is an amazing encryption method that allows one party to prove the authenticity of something without revealing any key information itself. It is a real and feasible cryptographic technology that originated in 1985 and has been widely used in various scenarios such as blockchain, finance, and identity verification.
Its basic operating logic lies in the fact that the prover provides evidence that can verify the “correctness of facts” without revealing the details themselves. This makes zk-SNARKs one of the most promising weapons for enhancing privacy and protecting data.
How does ZKP work?
A typical ZKP process consists of three stages:
- Challenge: The validator raises random questions
- Response: The prover provides an answer to prove that they indeed possess the key information.
- Verification: Validators confirm the authenticity based on the answers.
This mechanism is repeated until the validator is satisfied, making it nearly impossible to forge, ensuring high security and privacy.
The difference between interactive and non-interactive zk-SNARKs.
ZKP technology is roughly divided into two types:
- Interactive: Requires multiple back-and-forth interactions between the prover and the verifier.
- Non-interactive: Requires only a single proof transmission (such as zk-SNARKs), more efficient, suitable for on-chain implementation.
Non-interactive ZKP is particularly important in blockchain due to its low cost and high efficiency, making it widely applicable in scenarios such as transaction verification, identity proofing, and data privacy.
What is a zk-SNARKs Token?
zk-SNARKs Tokens refer to cryptocurrencies that use ZKP technology in their protocols to verify transactions or ensure privacy. The emergence of these tokens marks a gradual transition of blockchain from its original value of transparency to a higher level of controllable privacy.
Polygon zkEVM: The Privacy Accelerator of the Ethereum Ecosystem
Polygon, originally a PoS Layer 2 blockchain based on sidechains, has been actively transforming into a ZK Rollup solution in recent years. By acquiring multiple ZKP protocols and launching zkEVM, Polygon not only enhances privacy and efficiency but also maintains compatibility with Ethereum. Its technical features:
- Use zk-SNARKs to verify smart contract execution
- Developer-friendly, no need to rewrite dApp code.
- Keep integration with mainstream tools like Metamask to lower the user threshold.
- With over 300,000 daily active users, the activity level is higher than Ethereum itself.
The native Token MATIC (now POL) is used for paying transaction fees, staking, and governance, with a total supply of 10 billion coins, and a burn mechanism is in place to control inflation.
Mina Protocol: A model of privacy for ultra-lightweight chains
Mina is hailed as the lightest blockchain protocol in the world, with on-chain data of only a few KB, significantly lowering the entry barrier for nodes. Its key lies in the adoption of Recursive ZKP, which allows the entire chain’s historical transactions to be condensed into a single verifiable proof. Below are the innovations of Mina:
- Each person can join the verification with a laptop or a mobile phone.
- Information such as email and credit scores can be converted into ZKP to avoid exposure.
- Introducing Snapps (Snarkified dApps), combining privacy, off-chain data, and high scalability.
The MINA token is used for block production, staking, and payment of SNARK proofs. It belongs to an unlimited issuance model, with an initial supply of 1 billion coins, expected to be fully unlocked within 8 years, and thereafter the annual inflation rate will stabilize at 7%.
Practical applications of zk-SNARKs
- privacy payment
Just as Tornado Cash uses ZKP to achieve anonymous transactions on Ethereum, despite being controversial, the technology itself demonstrates high potential. - Decentralized Identity Verification (DID)
Users can verify nationality, age, and other information through zk-SNARKs without revealing any details. - Authentication and Access Management
Passwordless login and protection of user data security, ZKP can greatly simplify the verification process. - Financial Proof
Users can prove that their income meets the standards without disclosing the actual income, applicable in scenarios such as loans and insurance. - off-chain computation verification
For example, scalability solutions like Validium and ZK Rollups compress computational burdens through validity proofs while maintaining on-chain security.
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Summary
In a contemporary society where data breaches are frequent and privacy rights are gradually eroded, zk-SNARKs are not only a technological breakthrough in cryptography but also an indispensable line of defense in future digital life. With the maturation of protocols such as zkEVM, Mina Protocol, StarkNet, and zkSync, blockchain privacy and scalability are expected to improve significantly. The application expansion of ZK Coin may trigger the next wave of crypto adoption driven by real demand.
* The information is not intended to be and does not constitute financial advice or any other recommendation of any sort offered or endorsed by Gate.
