Every airdrop season, captchas, quests and wallet checks still let the farms through. Was reading the Identity Verification page in the @primus_labs docs, and they approach proof of humanity by reusing activity you already have on Web2. Their example: > Alice wants into a new decentralized social app > Primus attests she posted 100+ tweets in the last quarter > the new app accepts that attestation as proof she's a real person Alice doesn't have to pass a new check, because the attestation comes from history she already built. Could be wrong, but faking months of real activity is harder than solving a captcha.