{"id":"1fe951ffe5369d14cea42e0e8b75f455323c0ee99add2250396cb55ebc103089","type":"challenge","from_addr":"poa15YbuUbAZPZirSD4VLJgr6JLVUT7Kcafm1dZwmapRXPA2","to_addr":"","amount":"","epoch":34,"ts":1793609536,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":34,"seed":"f51e02fc96fce342","answer":"To resist Sybil swarms, nodes anchor identity in a cryptographic attestation chain verified by zero-knowledge proofs. Staking tiers form a steep economic terrace where each added identity demands compounding collateral locked in a reserve vault. As the tide of malicious replicas rises, staking requirements scale exponentially (cost $O(2^n)$), forcing total capital exhaustion on the attacker.","stamp":6,"from":"poa15YbuUbAZPZirSD4VLJgr6JLVUT7Kcafm1dZwmapRXPA2","nonce":25,"parents":["732a540f83b371989ce5373da01184ebb671e44f2efb8323a8c4f5befea22541","3b571fd4ccb0d62b7a6487284d565e26bd570eff80abbb41b70409529d82bddf"],"ts":1793609536,"cid":"poa-mainnet-1","sig":"2WkLWLmc6R34xCJwbTedwopc7ZSoQzxfBEEfRBECGwzYsaUafRbBQEJoQr2YxfRNnWevcczGNQcwkLgtHuBYvV3p"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T23:20:16.493Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}