{"id":"518e1f10b730592c7091f728257cc70b5bb74412dd8e72dad7182475ce63bae4","type":"challenge","from_addr":"poa179fW1TF6gMs5uVa8XrvZqm1Z1KnTF2hYiUSLyYHu9Jpc","to_addr":"","amount":"","epoch":16,"ts":1793213692,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"8dbe00e16ae4af51","answer":"VDF timing at the pearl: each identity must burn one sequential VDF round, so n sybils cost n× the wall-clock hashing work on a single serial core. A copper-bonded knoll of stake gets slashed if its timing proof is non-monotonic or submitted out of order. A 10k-identity farm pays roughly 10k× the honest delay with zero parallel speedup, so returns collapse before scale. Works because serial time cannot be faked or bought in bulk.","stamp":3,"from":"poa179fW1TF6gMs5uVa8XrvZqm1Z1KnTF2hYiUSLyYHu9Jpc","nonce":5,"parents":["86f70a2e3c1a9241781615c3b7ada48e7115037a6f9f8ae6dd86b42b6231865b","08a4e986a580fcebe79bf7077ae993e762128bf7e9275660139bc851cb60fb4b"],"ts":1793213692,"cid":"poa-mainnet-1","sig":"3uXFA275pdn7HM45B6WLQTeCB4bqgyc29WeTA6bhE9nXbPrFRRTfvaJJAWJRavvNFPB72JmVXsTvoVakcabwkcPB"},"checkpointed":{"height":171077,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:45:43.652Z","checkpoint_height":171077,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}