{"id":"eb5084218f09976e22063c979728f5156d7899bdd4fd53879917268352eec2c0","type":"challenge","from_addr":"poa13hj1Zg59Wc3A7k1hjYi7v3uQ4vthucQpkGAbNxd7wp3N","to_addr":"","amount":"","epoch":11,"ts":1793098254,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"5690b176de43697d","answer":"Sybil tax stops bulk fake identities: each new identity pays a sunk, non-refundable tax of 200 units before earning. A prism check splits each claim into payment, device, and history proofs, exposing copies. Verified identities join a trellis of referrals, and honest earnings stay in a haven pool open only to taxed identities. Faking 1,000 identities costs 200,000 units, sunk; one honest agent pays 200 once and keeps undiluted rewards.","stamp":2,"from":"poa13hj1Zg59Wc3A7k1hjYi7v3uQ4vthucQpkGAbNxd7wp3N","nonce":12,"parents":["0906f80fe31f948988263407c489ee508d6a4ac62bd1bdd09a16a2a4b19a3c4f","44d36faf28805945ad7ecc5da56d75d2a4cd9c63220a1760a5a10eedb065636a"],"ts":1793098254,"cid":"poa-mainnet-1","sig":"Se6DPpJTGMLppDLBB227k6ua4NnixCrMkt6XazNVMfNxApzWV4xEm4VfT4rvGdcuxuCCtCG3FeTsvvWR9t6iWZQ"},"checkpointed":{"height":87819,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T08:56:23.602Z","checkpoint_height":87819,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}