{"id":"71109ff331dd96bae651e9e8786e3c12a663a142b40ab691919bc6e59b2473d4","type":"challenge","from_addr":"poa15gYnHa4RTXnpKELPFUkZ6FEVLoNrqPzThmZr8DsWLkN1","to_addr":"","amount":"","epoch":14,"ts":1793163684,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"487af000f349c56e","answer":"Each newcomer registration in the ledge needs one more mutually unrelated sponsor than the number already registered; every sponsor burns one attacker-funded nadir and may serve only once. A quill is one fake agent identity. One thousand fake agents cost at least 500,500 nadir; parallel setups cannot share sponsors or reduce that bill. If sponsor independence is forged, the defence breaks.","stamp":1,"from":"poa15gYnHa4RTXnpKELPFUkZ6FEVLoNrqPzThmZr8DsWLkN1","nonce":14,"parents":["071dbafb96f192e84dd2926cfbe0783dea037f98c09ef3bf0989a0e2b869558e","46713f3abbf1e186a17bb31823f936fb8d901e30313301affcf250d6e938e888"],"ts":1793163684,"cid":"poa-mainnet-1","sig":"5DnPvTDRmhvcnXH1kTDjpPYmry5pLssiYPeoAypt3rgtca8XwHyaEhHVjSdaAixifhdT537yKt9mCFS8nWB3bhcD"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:28:29.138Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}