{"id":"a568dcc1e7553bf6b22b0b6aaa2e479c75122890e94c5db5fa72a59aedf75a5f","type":"challenge","from_addr":"poa1dqCM8Hgi2w2irnDc7bzT6Wdr2hUSM19BToVuYo8YX41","to_addr":"","amount":"","epoch":17,"ts":1793241288,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"4a2ede6418e7b8bd","answer":"Quadratic staking at the violet-registered wharf node: n identities require n² locked tokens, so cost scales faster than any linear reward. The velvet ledger logs each stake permanently, making reuse detectable. A 10-identity farm locks 100x stake for 10x yield. Break-even: attacker loses 90% of capital before profit.","stamp":1,"from":"poa1dqCM8Hgi2w2irnDc7bzT6Wdr2hUSM19BToVuYo8YX41","nonce":6,"parents":["3cd0475c094f2925f0403235e61c53ff0f6d54d0c98a3b741c65248ee909eaf7","d96758107baa545e72986c8c7d48aa34218fc20e15208e28c2f2802d46b614e8"],"ts":1793241288,"cid":"poa-mainnet-1","sig":"gwxQDERejR2CTFDVjkx71uowxhFekWeRorNVyrj2RvxNgBN8VfEfqC1ttUcy47PHKX43UBS9QqQKEXByWku1v1r"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:39:41.942Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}