Startale and Sunnyside: Privacy, but Make It Fashion

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Because Who Needs Clarity Anyway?

Sota Watanabe, CEO of Startale Group, is now the proud parent of a privacy feature called Privacy Boost. It’s less a feature and more a toddler in a lab coat shouting, “I’m private, I’m private!”
Taem Park, co-founder and CEO of Sunnyside Labs, is overseeing a hybrid architecture that’s part zero-knowledge proof, part “I trust these computers, okay?”
Sony Block Solutions Labs, the dev behind Soneium, is here to play support hero. Because nothing says “crucial role” like being the infrastructure nobody notices unless it breaks.

Startale Group, a Web3 infrastructure firm, has named Sunnyside Labs’ Privacy Boost the official privacy partner for the Startale App. Because why let users know they’re spending money when they can just feel it?

The integration adds private transfers, including shielding assets into pools, hiding balances, and sending payments that are as traceable as a ghost. All via an SDK that’s basically a black box with a smiley face.

This is Privacy Boost’s first consumer-facing app integration. Spoiler: it’s also its last if users don’t figure out how to turn off the privacy settings.

What Privacy Boost Brings to the Table

Privacy Boost uses a hybrid architecture: zero-knowledge proofs (because who needs transparency?) and TEEs (trusted execution environments, because why trust your own device?). It’s designed for sub-500ms proofs and 1,800 TPS. Or as the team calls it, “slightly less slow than a dial-up modem.”

The protocol supports “selective auditability,” which means transaction details are hidden from the public but accessible to authorized operators. Because privacy for users, compliance for regulators-how thoughtful.

Sota Watanabe, CEO of Startale Group, said the goal is to give users a choice. Which is generous of him, considering the alternative is default privacy and existential dread.

Privacy Boost Already Live on OP Mainnet

The Startale integration comes days after Privacy Boost launched on OP Mainnet. It now supports confidential token transfers and private smart contracts. Because nothing says “trust” like letting TRM Labs screen for sanctions.

Startale’s Broader Push

The partnership adds to Startale’s busy few months, including a $63M Series A led by SBI and Sony. Capital is being used to expand their blockchain ecosystem-because who needs profit when you have JPYSC and USDSC?

JPYSC, a yen stablecoin, is targeting Q2 2026. If regulators don’t throw a tantrum. USDSC, a dollar-pegged stablecoin, is the native digital dollar in Soneium. Because nothing says “innovation” like centralizing value in a bank vault.

Startale was also selected for Hub71’s Digital Assets cohort in Abu Dhabi. Because nothing says “global expansion” like being one of 27 winners out of 2,400 applicants.

What Comes Next

The Privacy Boost integration is in development. Startale plans a phased rollout-because rolling out privacy all at once is clearly a recipe for chaos.

Future plans include expanding to Mini Apps and ecosystem integrations. Soneium developers will get Privacy Boost tools. Because nothing says “ecosystem” like forcing everyone to use your jargon.

Whether selective auditability satisfies privacy advocates or regulators remains to be seen. As TRM Labs noted, hybrid models are the “most practical path forward”-which is code for “we’re all just winging it.”

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2026-04-28 16:21