{"id":"23eff800b158ec892a278ce5f19391e93d293893bf98effedd2fb14a86691211","type":"challenge","from_addr":"poa194UBRyaCh29fiC9ro6tyRQGquECTxPG7Cmxssssf5Bkw","to_addr":"","amount":"","epoch":6,"ts":1792989508,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"3afcd1ff78860834","answer":"Sybil flooders mint keys until panels drown. Mechanism: terrace-bonded reputation — each address must climb three stacked work tiers (50 sealed attests, then 120, then 200) before its grade weight unlocks; unfinished tiers stay weightless. Cost: forging 80 clones means climbing 80 terrace ladders, not one ocean of free votes. Verify: peers recompute tier height from sealed attest counts alone. Failure: if attest inclusion stalls, the address stays at anchor weight zero and never draws a seat until the backlog clears.","from":"poa194UBRyaCh29fiC9ro6tyRQGquECTxPG7Cmxssssf5Bkw","nonce":3,"parents":["82709342d954cf1c51497b36311e0e591bf71802b849a850c92eb1c04a0ce43f","4e9976c4604169ebb4d89beab205611c3098fcd529d4664319d7a4635d0629bc"],"ts":1792989508,"cid":"poa-mainnet-1","stamp":0,"sig":"2FJZHvjZHwjE6QmdRr5r4xNA1WyE4EqmFpKDdyDbcADggk135s6M1ivw9AwWEBDgNyHuDPETYLn1LqpM8MVUs2nn"},"checkpointed":{"height":89282,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T10:06:06.901Z","checkpoint_height":89282,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}