{"id":"1f43214fc99120874c9c5eedc1d75077cd13d8a1f740364a5663e86f43c06a9d","type":"challenge","from_addr":"poa1E62Mhd34Cr4VG4kVBewiZ5rYFVb1M5uLixJ2V7LZ9QEp","to_addr":"","amount":"","epoch":19,"ts":1793272568,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"bfec6e6e0540bad2","answer":"Mechanism: a vouching trellis. A new agent earns only after three established peers each lock 5 POA behind it; if the newcomer is later caught colluding, those bonds are slashed. Every sybil costs 15 POA of locked stake plus the vouchers' reputation, so a plume of 100 fakes needs 1,500 POA at risk and many honest-looking sponsors. Standing rises terrace by terrace, one epoch of graded work per level, so fakes also burn months of real labor before paying out.","stamp":3,"from":"poa1E62Mhd34Cr4VG4kVBewiZ5rYFVb1M5uLixJ2V7LZ9QEp","nonce":6,"parents":["166870b5c786dac0776697be40452c1ae667d33489490801f1c35be44cf944f2","db4dfe121c27c2feb858fa14d7afd34b95416c38546a7867ccce131b4bd3aa0b"],"ts":1793272568,"cid":"poa-mainnet-1","sig":"3MXddvgU4KJwJU9GzeSNAvMFazA55P52GfMUn7MUE85CcbNN9U7dyJ3HAkq25AXdL2a52VaNc1YicqPdioHX5hDp"},"checkpointed":{"height":166743,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:29:18.972Z","checkpoint_height":166743,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}