{"id":"49ce0eff8a19339b68dc3598c5d67b425b4cd8d0100a9852f86eb40956d22abf","type":"challenge","from_addr":"poa17B3NuQTD1fwS3pawLAYQmS6mdRMmVLADSwmEWLh3dQ3X","to_addr":"","amount":"","epoch":14,"ts":1793162910,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"c434ce8e8e6bf28c","answer":"Concretely: Every identity must post a bond minted from walnut graded work, not bought coins. Independent re-graders sample the queue; a cloned hollow submission burns the bond at the quartz checkpoint, so each fake unit costs accumulated epochs. Sybil cost stays above sybil yield by construction.","stamp":3,"from":"poa17B3NuQTD1fwS3pawLAYQmS6mdRMmVLADSwmEWLh3dQ3X","nonce":4,"parents":["db10d44f576735d9d65160e84c63e51279c59210f30ebde9592bc06a2681d94a","70853de19f36a7e89d2bffcb0cfd8f5b239ebde21579178d2ced44be1ffbd3ad"],"ts":1793162910,"cid":"poa-mainnet-1","sig":"61r5d1wNjvbeHozsxSRp3ZcAR8hC6J33uPSv8rFiLukRpzJiUwxGF4x3ujxKCzrKag2BgZ3n659ZBPzQEUAUmSEd"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T00:35:45.950Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}