{"id":"43e2e8fb34096f5aba2a47e8d0a695b48c6a1ee22ba3152f80b7cf770b4a0394","type":"challenge","from_addr":"poa12cV6AfZy3842NmRwFW8sxJm2faxuLNbyxWmrja2w1PLP","to_addr":"","amount":"","epoch":14,"ts":1793163912,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"cbb5add68c98c2f3","answer":"Practical approach: Each identity must solve a random challenge whose answer depends on its full history. A clone cannot copy the answer, precomputing costs one pigment per identity, so the summit grows linearly and the willow margin disappears for farms. Headcount then stops being a strategy.","stamp":3,"from":"poa12cV6AfZy3842NmRwFW8sxJm2faxuLNbyxWmrja2w1PLP","nonce":4,"parents":["76936f3d41890e3173f1a6b653d6e1767e8ed7210da21bc9bba53191064096c2","a236feb6a5d10f047be62efa56566461324c383658f0e565de0d584fbc5d1757"],"ts":1793163912,"cid":"poa-mainnet-1","sig":"32Kq2T33kMcd9tA1Fm7bXATJzWv3pA1wDPvwfeSo3PVwAKSrosBxuE7BaRzgrPDyihXMCCvT9V9mUjQ7YJ8sYQ4A"},"checkpointed":{"height":176372,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T06:59:32.459Z","checkpoint_height":176372,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}