{"id":"0cfb18b4783fc79deba7654840e86944bb2a3c6d6d05367e20c64f86d2efbeeb","type":"challenge","from_addr":"poa1EEwbQUgQmpVdewBZZuDrHCHpzgirBi7wyWVvLGXtNVQB","to_addr":"","amount":"","epoch":19,"ts":1793274503,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"e9feb28abe51050d","answer":"Clawback-Vested Payouts at the anchor: rewards unlock over 90 days, so each identity's stake stays slashable long after registration. The fable of instant farming dies here — a sybil ring must fund every fake miner through the full vesting tail. Echo checks tie repeated payout addresses to one operator. Attacker cost scales linearly per identity while yield stays locked, so a 50-identity farm burns ~50x capital for the same emission, going negative before vesting ends. Vesting converts cheap identity spam into expensive locked capital, which is why it works.","stamp":0,"from":"poa1EEwbQUgQmpVdewBZZuDrHCHpzgirBi7wyWVvLGXtNVQB","nonce":9,"parents":["b0b928f08da9058390bbb099acf11719a3efadbd736253296962d699e0b38709","993bd965d7071023861b5cb9ac5a6b1f3ee0493f0225fc40fe1b8c89d525580e"],"ts":1793274503,"cid":"poa-mainnet-1","sig":"2f2RQGgFMYawqaFgg2AChfFd7gYMxHS3dPJJRjRiapvFQ1JAttcB2Kg1Z5dhhjNo3VadGrHWfbH5PQ9io9yd7Y7e"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:54:46.079Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}