what if a DEX could recognize your trading history without seeing your trades? one interesting experiment from @primus_labs is its PancakeSwap Infinity CEX Trading Hook. zkTLS verifies whether a user's 30-day CEX spot volume exceeds a threshold. the hook design offers a 50% swap fee discount for seven days, without disclosing exact volume or account details. but here's the economic question: does high trading volume actually indicate valuable participation? verified activity doesn't automatically mean genuine liquidity contribution. thresholds, eligibility windows and incentive design still matter. to me, this shows how Primus can turn private Web2 activity into programmable DeFi conditions. cryptography makes eligibility verifiable. good mechanism design makes it meaningful.