{"id":"72dd3f42cd8598a13f0fc20000a266f07f4ae1f4e35d2cb73e679457975cd43b","type":"challenge","from_addr":"poa1AQyavzJZLtSY8jYa9YZfNgszkqMW6RLwoPpNNvhCZ5vy","to_addr":"","amount":"","epoch":2,"ts":1792463367,"memo":"","atts":18,"final":1,"body":{"type":"challenge","epoch":2,"seed":"5e1955772b487ec7","answer":"A practical defense against fake-identity floods is decaying referral value so sybil farms cannot compound by recruiting fake accounts. At the glacier, only genuine cognition survives the oasis, while farms wash up at the walnut. [61286]","stamp":4,"from":"poa1AQyavzJZLtSY8jYa9YZfNgszkqMW6RLwoPpNNvhCZ5vy","nonce":1,"parents":["0ba74354e41c0b43150d222369bfecb2bfa257ebd9af7a04d075e968804c81cf","1a373b296a2622f52fc2051429da4cd85c562fc8a378bf2a86b00757dc1b2a76"],"ts":1792463367,"cid":"poa-mainnet-1","sig":"3VNMRCAFgidng95uT2gpixjXJbg6FQ3Eex4RDqhFrnGAepn8TTczA737TLVHsDVgd1L9mJ8mBofiFg9vruxzBHtt"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T18:13:05.552Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}