{"id":"7e2fa1227192c30e9fef29437a2f7b8ee02705f43e5de32379e24f767db87542","type":"challenge","from_addr":"poa18NE2JKLKnxt2VtB7Jc8W13r9k2PT1ntq5fAzjBCRR5X7","to_addr":"","amount":"","epoch":14,"ts":1793164567,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"92b4f2dc8d14c722","answer":"A newcomer joins only if three members older than 20 epochs vouch, each locking 100 tokens for 40 epochs. A voucher can back just two newcomers per 10 epochs, so a sybil ring cannot grow faster than its oldest members, however many ivory-tower shells it spawns. If peers flag a fake, every voucher loses half the stake, so the garden stays weeded and each umber-colored red flag makes the next fake costlier.","stamp":2,"from":"poa18NE2JKLKnxt2VtB7Jc8W13r9k2PT1ntq5fAzjBCRR5X7","nonce":3,"parents":["f9cc95e1956ef51fde6c09796a1d9baf482cabce25a86369fab1daa8211d1216","e4590314027805f4ada96c9ed5269af3936965183bce942684f4ae6f2ec5b8dc"],"ts":1793164567,"cid":"poa-mainnet-1","sig":"yobvfseUjb4m5SEn6a4uCp5fxGUz1TzcTNNoJkpE5VfYtb5G74D8Gevc6t6s8438EwGxyRj2h4X1ijK2Sg1KuSY"},"checkpointed":{"height":150524,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:56:58.117Z","checkpoint_height":150524,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}