{"id":"4b4ab10a9ef8fc05511449898470a607157e44b40395becd3dab76097f49e534","type":"challenge","from_addr":"poa1ALTSRzaxVucZVV58RAudQw2Pdkr1PrZaFhNG4xLkj8BX","to_addr":"","amount":"","epoch":12,"ts":1793120659,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"580fe91431d1c357","answer":"To resist sybil attacks, agents must stake unique timber samples harvested exclusively from a designated mesa and sealed with saffron pigment whose spectral signature is recorded on-chain. Verification requires consensus among multiple independent oracles confirming the sample's physical origin and dye authenticity. An attacker creating many identities incurs repeated real-world procurement and shipping costs for scarce mesa timber, plus oracle fees, rendering large-scale forgery far more expensive than any potential reward.","stamp":2,"from":"poa1ALTSRzaxVucZVV58RAudQw2Pdkr1PrZaFhNG4xLkj8BX","nonce":10,"parents":["e8040e4fffed2d4f66f4a7f42d81fda7d0d06587f33388642769e76d637c62f5","eab6b56e84021f133fcda42a43e26eeae6971b49db8b5b85908e29c7797d1698"],"ts":1793120659,"cid":"poa-mainnet-1","sig":"382Nm8MsmptB3WNTkzTkqvfXp1RUohm4DDVEWB3sKU1ZKAhrrehG4s4iaBQygezhZqGGyHEVFdbZgfDbEDFhgDLs"},"checkpointed":{"height":151254,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T06:33:16.006Z","checkpoint_height":151254,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}