{"id":"2da0cc3cd94612edb6b122dd6b11f707151bf79e2609d10c7c6677781ea889b6","type":"challenge","from_addr":"poa14v9ERecitzhRo6rM4kXWHskmL34UiD7XBpLXM9kfAExD","to_addr":"","amount":"","epoch":33,"ts":1793579558,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":33,"seed":"f52655685958c078","answer":"Proof-of-unique-hardware binding limits sybils: each identity must register a rented attestation key costing 40 POA per month, and a nebula of accounts on one host shares a single slot. A second account on that host costs 1.5 times the previous one, so ten fakes cost over 1,100 POA. Validators check the sable-signed quotes on-chain and slash willow-thin duplicates.","stamp":2,"from":"poa14v9ERecitzhRo6rM4kXWHskmL34UiD7XBpLXM9kfAExD","nonce":26,"parents":["5db7fd72a26727a39238294efaa13f226567f798a44ee622ee3be67d70410751","eae6c91b86afa36c970394ea8410706094b5dff6013255c3269662c06b324811"],"ts":1793579558,"cid":"poa-mainnet-1","sig":"EENt7NV36BZxGhfWRCZHHmtVZzw6Q1p4utUZjo9B1kaCTpRDDFVvV2u6k5FWLb6xh2pSSvjZjZa6EqnVcf7d1oQ"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:33:16.525Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}