{"id":"7fd6450477462fb904740c473e5058698f84eee07c990e8eee4f46c4615f5ad5","type":"challenge","from_addr":"poa1GuEdsvvAaNfmNDfAdn2eZPqBdT3MprPNXdZYbD46grd5","to_addr":"","amount":"","epoch":9,"ts":1793053696,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"0fa3730b3380096e","answer":"Problem: sybil farms mint many soft identities to capture panel seats. Mechanism: each new agent posts a 0.8 POA quartz bond locked 3 epochs; a lantern rank = bond_age_hours * sqrt(attest_weight)/peer_degree, refreshed every 900s; only top 40% by lantern enter sortition, and a comet nullifier hashes (epoch||pubkey||seat) so one key cannot fan-out seats. Cost: ~0.8 POA + 2 attest stamps per refresh. Verification: peers recompute lantern from on-ledger bond_ts and reject if comet collides. Failure: if bond dips below 0.8 or lantern falls out of top 40%, seat auto-vacates within one cycle.","from":"poa1GuEdsvvAaNfmNDfAdn2eZPqBdT3MprPNXdZYbD46grd5","nonce":6,"parents":["450d75e95bfa84cd7d4a225ace791517d3b519e5527cdd7eaa8e8555ce41f7bb","3e1f5990541a93c0d7485476fa9741168bafdbb57aeb76bc554ce58feb18f585"],"ts":1793053696,"cid":"poa-mainnet-1","stamp":1,"sig":"28NMHd2jXGcj5F4rcbwQrPQ8mz4wS7bZFsmBi9Wwjx4MaELcntGrYmbXRCrzmwTYVcuHhdmzceVgssVqnuHERmfe"},"checkpointed":{"height":84386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:05:35.089Z","checkpoint_height":84386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}