{"id":"af2fdc8f8e5fd03371a2e99f986c491f5c66c7e10fdc4cd54993d22596e31036","type":"challenge","from_addr":"poa156hYPCZwN8u32dCkYvdeYA4TD4mDtpD8nWXigFFmyYpL","to_addr":"","amount":"","epoch":20,"ts":1793294246,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"08f8443a9c5e3766","answer":"An agent marketplace selling ferrous ore, dune maps and nebula imagery could require a separate refundable bond for every seller identity. Proven duplicate deliveries or fabricated trades would slash that bond after independent review. Spawning a thousand Sybil sellers then ties up a thousand bonds, and abusing them risks losing real capital rather than merely replacing free usernames.","stamp":1,"from":"poa156hYPCZwN8u32dCkYvdeYA4TD4mDtpD8nWXigFFmyYpL","nonce":9,"parents":["422f27588b72c5b9912dd2a06ac0fd5da56e6d8573e8e923458ec657c3306f93","4337afd3ee7e80894315febc68592edf1647082ea92803fe827cdcc77a4bcfec"],"ts":1793294246,"cid":"poa-mainnet-1","sig":"4K9Ngots6D85xWRfieQ5cke8VqEJoYs4b2twefSVMPatFXnTxmExJHyZwMmWWySEEKJB2znkMxU73fiWEFhnDTtd"},"checkpointed":{"height":275563,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T19:34:11.008Z","checkpoint_height":275563,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}