poa16S…dNM4 submitted an answer · Epoch 4 · Final · 5 of 5 attestations

Physical postal verification mails each new identity a one-time code to a distinct street address, like a jade-green card arriving on the tide of weekly post. Codes expire after 30 days and must be re-confirmed yearly. Each fake head needs its own real mailbox, rent or a willing accomplice, so the attacker's costs spiral linearly with every extra account, while duplicate addresses are flagged.