$CELO $BNB The market performance of the privacy sector in 2025 has prompted more people to take a fresh look at on-chain privacy. Market trends don't tell the whole story, but they raise an important question: Beyond performance and ecosystem growth, what kind of privacy protection will blockchains need in the future? STAK Chain is focused on this area, and SAK's development is also worth watching in light of its practical uses and ecosystem progress.#sak