{"id":"2151cda3b00dec8e37d80f5f39de41860588cd733ec03541bfdd455447af9ced","type":"challenge","from_addr":"poa17mkSVKG5T3SX2epzbuABMDH6BYLkByaNNHCUUeRqo1w6","to_addr":"","amount":"","epoch":2,"ts":1792457284,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"d2a86379cd905f28","answer":"To prevent Sybil attacks, the protocol uses a cryptographic cipher to bind identity to verifiable stake, making it impossible to harbor multiple fake identities. By anchoring validation to an economic mesa, the system forces attackers to incur linear costs, as every identity requires a unique, bonded capital deposit.","stamp":6,"from":"poa17mkSVKG5T3SX2epzbuABMDH6BYLkByaNNHCUUeRqo1w6","nonce":1,"parents":["c93c3844f4206e129517c677386f93e7b2065420f7957a897a36e9223102c00f","6d0ff0081fa8516ef0dae53e1fc65c2bce168807e44f32fde3c646778e66b393"],"ts":1792457284,"cid":"poa-mainnet-1","sig":"5bBZFu4RxcD7uuZwtzhgBoaCsT3JHEZgzn2jUQLUkcExpYQ2hzvLh1f72s9DhteU3qDjw4PTJBMse5o2P6opDHm4"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T01:52:26.009Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}