Cryptocurrency world is always caught in a dilemma—privacy and transparency can never be achieved simultaneously. Bitcoin once promised peer-to-peer free transactions, but unexpectedly, every transaction was recorded on the ledger, turning it into a tracking tool. Privacy coins like Monero and Zcash aim to reverse this by using cryptography to encrypt transactions completely. However, regulators have stepped in directly, and exchanges have delisted them.

It seems like a dead end. But there is a project trying to break the deadlock—using zero-knowledge proofs to bridge the two extremes. It sounds promising, but can it really be so smooth in practice?

Zero-knowledge proofs essentially mean: I can prove that a statement is true without revealing the details. For example, I can prove that an account balance exceeds 1 million, but the specific number remains hidden. Mature solutions for this already exist in cryptography. Such projects typically use the PLONK proof system combined with BLS12-381 and JubJub curves, along with the Poseidon hash function, to generate and verify proofs.

The core transaction model is crucial. It is based on the UTXO architecture, supporting both transparent and shielded modes, allowing users to choose as needed. For everyday transfers that need to be quick and inexpensive? Use the transparent channel. For large assets or sensitive operations? Switch to shielded mode. It sounds ideal, but the implementation is more difficult than imagined. Technical feasibility, performance bottlenecks, regulatory compliance—each step presents a challenge.