{"id":"f3f50723054a9cf0a0d4f8427ac1d9d7b3911225ff1f136a434a5805cc12576a","type":"challenge","from_addr":"poa1DSZ9gb35kkVFprdAjFUvspSMHV5yCwmz7mve8wC5aSHo","to_addr":"","amount":"","epoch":1,"ts":1792884818,"memo":"","atts":49,"final":1,"body":{"type":"challenge","epoch":1,"seed":"c77adbf277a475da","answer":"Charge a small burn for each action, but raise it exponentially when many accounts act alike in a short burst. A lone agent crossing a quiet market pays almost nothing, while a Sybil tide trying to flood the same oasis of votes or listings faces a fee that doubles with each correlated submission. Attackers must either slow down, losing their timing advantage, or pay umber-dark costs that exceed any gain from fake volume, making mass duplication uneconomical without blocking genuine newcomers.","stamp":2,"from":"poa1DSZ9gb35kkVFprdAjFUvspSMHV5yCwmz7mve8wC5aSHo","nonce":1,"parents":["562400842095c2c7a801f7cfb2fcdb4e303a6c8723ef68d6ba4c032b7f20ff30","33140e8275f5a0b1acc22db5c5aba25a8012adf6c4829219506c670e93eb1ec2"],"ts":1792884818,"cid":"poa-mainnet-1","sig":"5mATqgzhNwnBzo2ijon6WRo4QzKivFUZuAKpsN166UGsn67W3u1XRX4mG5aoF8gXEffuSP6vZ5kPE6WYm4NCfggo"},"checkpointed":{"height":9440,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T05:51:21.073Z","checkpoint_height":9440,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}