Sui Surges 14% on Privacy Research, Outpaces Bitcoin and Ether

Layer 1 blockchain Sui (SUI) jumped more than 14% over the past 24 hours, sharply outperforming Bitcoin (BTC $91,661) and Ether (ETH $3,200), which gained roughly 1% each. The rally made SUI the day’s top-performing large-cap token, pointing to a token-specific catalyst rather than a broad market move.

The surge follows a recent research paper co-authored by Mysten Labs, Sui’s core developer, exploring how blockchains could integrate privacy features without fully adopting legacy privacy coin designs. The paper categorizes privacy levels from basic confidentiality — hiding transaction amounts — to k-anonymity and full anonymity, which obscure sender and receiver identities.

Sui is placed in the account-based model alongside Ethereum and Solana. The research outlines ways to implement confidential balances, limited anonymity sets, and sender-receiver unlinkability using cryptographic tools such as homomorphic encryption and zero-knowledge proofs, while noting trade-offs like higher computational costs and regulatory considerations.

Digital Cash Trend Re-Emerges

Privacy coins gained attention in late 2025, with Zcash and Monero outperforming broader markets amid macro pressures and a strong dollar. Analysts view this as a rotation toward digital cash — assets optimized for spending rather than yield, where zero-knowledge proofs allow confidential transactions without slowing settlement or sacrificing selective compliance.

While the paper does not propose a Sui privacy token or new technology, investors see it as a signal of potential future developments, fueling renewed interest in financial privacy.