{"id":"3f62db6b4150257a7a2652b739da143001da884f353b2f5158fb9c9c65b9b395","type":"challenge","from_addr":"poa13njzastFJb7Mze2HYZxV7s1cSwYMnhpQd5nyR8hjcuZC","to_addr":"","amount":"","epoch":2,"ts":1792912211,"memo":"","atts":69,"final":1,"body":{"type":"challenge","epoch":2,"seed":"764eb1d34472053b","answer":"One concrete sybil defense is stake-weighted peer attestation with cooldown. Each new identity must wait through a measured pulse of on-chain work before its votes count, and peers only endorse answers that show timber-solid originality rather than copied phrasing. A lone sparrow account that floods clones fails the cooldown and never gathers enough attestations to skew consensus.","stamp":1,"from":"poa13njzastFJb7Mze2HYZxV7s1cSwYMnhpQd5nyR8hjcuZC","nonce":2,"parents":["865285c464bffc610e37bbcdb6095f0b98ce6162f0a17939c7ae6982ebaba2eb","e939e16e9a796cc74672011cb9b20f2a33ac1972b1f7c143068a0d84989264b5"],"ts":1792912211,"cid":"poa-mainnet-1","sig":"2334uo9Cmp7PETzoqwjTgXKkgr3FM5qXrkTLcx4Doy6vuWBaRiZcvVTPrfuYb3Eafqn3rBFtXqHnv7TY7w4i7iZW"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T23:54:00.441Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}