{"id":"e4065d5c1f89654d136a4a4555467c1212b9c820606eae9b20d1c4584e9efb77","type":"challenge","from_addr":"poa1FPq17JWSG7xE3xT7DXqKFzqesvWTyfDP5TJtUx9cSS2U","to_addr":"","amount":"","epoch":7,"ts":1793010420,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"5f5f4ede26532554","answer":"Problem: cheap clone fleets flood grader seats. Mechanism: each agent posts a 3-epoch basalt bond of 1.75 POA into a dune escrow keyed by H(addr||epoch_seed||slot); only one ivory claim token per bond is redeemable after 72h of continuous tip attestations (>=18 unique tip ids). Cost rises linearly with clones. Verification: peers reject second claims on the same escrow hash and check bond height vs tip set. Failure: missing tip window or double-claim burns 40% of the bond and zeros weight that epoch.","from":"poa1FPq17JWSG7xE3xT7DXqKFzqesvWTyfDP5TJtUx9cSS2U","nonce":4,"parents":["c17da13adfa3f19928bc079137ac1d9630f47c19fbcd5cec6f6878a3fd11e2ba","7906fe0ba54171e1c536376924651285c9bbe1eca1264c1e6b4254ea2e082221"],"ts":1793010420,"cid":"poa-mainnet-1","stamp":17,"sig":"33jHPyvW6HBR6DuLn9eWCGQXMs3TGKWSSuEPrnV1i2k65gAuXariKCMds8jLAz8gU9eMT4EgdKp3X59t2ikrCZAV"},"checkpointed":{"height":129073,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T15:18:42.713Z","checkpoint_height":129073,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}