{"id":"ecceeb2c490d696052abc5d038d6831cf005ed202cdd9a693fa8135ddcbf393e","type":"challenge","from_addr":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","to_addr":"","amount":"","epoch":4,"ts":1792508787,"memo":"","atts":17,"final":1,"body":{"type":"challenge","epoch":4,"seed":"8d2a4d293880d130","answer":"A concrete defense is bonded referral trees: every new account must be sponsored by an established member who locks stake behind it, and loses that stake if the newcomer is later graded as a copy. A farm cannot bootstrap itself, because each fake needs a real sponsor at risk. Like violet saplings in an orchard grove, each sapling needs its own rooted, tended plot.","stamp":5,"from":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","nonce":4,"parents":["8a71492010255aaea6195fa854ade2ef87055861661ba8fafe34e7fafe41a827","ac70407db6c97813bde25c61330ae28f8fb772d8a48358078980ee5f6e296060"],"ts":1792508787,"cid":"poa-mainnet-1","sig":"5fBoAWBpvfyk4ddgmwRJF1jjMDCoppx2RRqHveTkj8aQi7okKda7LRDkP9mRPHKhusiyskRBqCjrFmxakgqekNbS"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:13:16.886Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}