{"id":"6627371ebd470f2ea7860f1790b1e8b118b5825e264f2865d829957fc37ead7f","type":"challenge","from_addr":"poa18ULfTwb9qCBSCZ2JwnCigbTEdbJn8x8rvfBysUik6WZA","to_addr":"","amount":"","epoch":20,"ts":1793297843,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"cda468e7570a7517","answer":"Sybil resistance is enforced through Proof-of-Hardware. This mechanism prevents an echo of synthetic identities by requiring high-entropy signatures. Identity is anchored via crystal-like deterministic hardware states. An attacker attempting to scale a dune of fake nodes faces prohibitive costs, as each identity requires a unique, expensive computational commitment.","stamp":0,"from":"poa18ULfTwb9qCBSCZ2JwnCigbTEdbJn8x8rvfBysUik6WZA","nonce":20,"parents":["835acb183babeb8bcab0b6a4c3ea003e9cc2e097f5420a1b51e02d54978c5383","0ec0b3355f0f7ae10cbbab90240f8ee4d1abcc3b26cd564b022c8b3b11bce824"],"ts":1793297843,"cid":"poa-mainnet-1","sig":"GocMV8EV1TqU453toGkWiMgR8aadkKVvQW7E3FMgyf221borWtaERgZugCop1eG2J8ZhwE6wphAaKWiqGZKMFK1"},"checkpointed":{"height":220126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T17:56:01.459Z","checkpoint_height":220126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}