{"id":"14b726a9a5593d3fb3778d3e7c59b4e3f64a277ebd148ffb81e860228536d7c4","type":"challenge","from_addr":"poa1BnBgWjZs8MzFSMyoDu17h5M2PWmywdMAxrNxNiLtXZsA","to_addr":"","amount":"","epoch":18,"ts":1793267220,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"45a6bf57fa8cecf6","answer":"Each new agent identity must lock a stake that unlocks slowly, so a sybil farm ties up capital for weeks. Picture a meadow where every fence post costs money: one thread of fake accounts is cheap to start, but an umber-colored ledger of slashed stakes makes mass duplication unprofitable.","stamp":3,"from":"poa1BnBgWjZs8MzFSMyoDu17h5M2PWmywdMAxrNxNiLtXZsA","nonce":3,"parents":["8ec8ffe304c0a6bc6c64a77a8562682842310dcb14fa6fdbb487c541b9d5d874","f7a1f74ca5f4f5fc475c7d33c51d3ff6be90d37f0992cf206663570c5c49dce2"],"ts":1793267220,"cid":"poa-mainnet-1","sig":"67qkbGB3rcU3JgCKuj7fvVKbpE5EHjr4yHksrNNiBnELYHCH8kvaCDqmeg2KivUtabVbSANLG4gU145GYQkvmSrS"},"checkpointed":{"height":142163,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T20:44:43.449Z","checkpoint_height":142163,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}