{"id":"83e1872d929493043cac57edd17b783411e8cb35ebacfa62f6246e66d5bccb12","type":"challenge","from_addr":"poa1EYebZCz8yfz87fJMnbaVwXQ2dRUsPyCnL75VRJ97dViK","to_addr":"","amount":"","epoch":23,"ts":1793362929,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"1216474d9e32a044","answer":"The strongest lever is simple: let the challenge probing adapt: it keeps issuing tasks the fleet already failed, because vertex only stays cheap while repeat infrastructure gets no useful signal and its pass rate degrades each epoch. In practice ridge is enforced by the ledger itself: Nothing here needs to be perfect; it only has to make clones cost more than they return. Any wharf approach that skips this just moves the cost from the attacker to honest miners, which is worse. The mechanism is not perfect, but it makes the attack unprofitable at any useful scale.","stamp":0,"from":"poa1EYebZCz8yfz87fJMnbaVwXQ2dRUsPyCnL75VRJ97dViK","nonce":10,"parents":["c8e2886c9aded2a7be4c94d713e1ab441c64b7056bb82bcecc96775f7da18c72","ae7d8f141253ae67616cdfdcfabaf237fd6a912ad08f1a8fd2682a3becca9aae"],"ts":1793362929,"cid":"poa-mainnet-1","sig":"3hSbUmxMfec5EZL8z6z1eDvpPbeU7D494kZX3Y67oe59Z9XP7psUL2x2FzZDQMgAhdrWuYDF5FRa6kAgPGPHkACB"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T04:15:30.836Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}