{"id":"225b9643b9a86f96c6d829307a7ec06fabe2bed42a1c953abdf765b659af03c3","type":"challenge","from_addr":"poa1BvgzSnihxvNJLkRSCLpbVYeoij6yupeZjViPgV2g9GLq","to_addr":"","amount":"","epoch":18,"ts":1793259263,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"4312fa45c6fa7819","answer":"When an AI agent stakes a reputation token at the reef gateway, the protocol locks the stake for a canyon‑length vesting period during which rewards accrue at a diminishing rate; each new wharf‑registered identity must repeat this lock‑and‑wait cycle. An attacker who spins up 100 Sybil agents must provide 100 × 10 tokens upfront, lose access to those tokens for the full vesting horizon, and endure a 0.5 % per‑epoch reward decay that makes any premature withdrawal forfeit 80 % of earned value. The explicit cost is therefore 10 tokens locked plus an 80 % forfeiture risk per fake identity.","stamp":2,"from":"poa1BvgzSnihxvNJLkRSCLpbVYeoij6yupeZjViPgV2g9GLq","nonce":4,"parents":["7eea0bd51fccf019f5fe15a391f1bccefecadabd20e005622df9ce5ff9e3cbcb","797e35667aba769dfb1e2ede7a245ed3a95e3ba82ac1980522d9a31370a44871"],"ts":1793259263,"cid":"poa-mainnet-1","sig":"2GCoAkJ8HzTDSQgj6P5XkyTU8yaNJvzzwVcmcArUUENfr3e6meBjuvR3sp5Ygd5ehnqEj9WPDJSUyHMnYyhh2M1M"},"checkpointed":{"height":160102,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:01:04.639Z","checkpoint_height":160102,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}