{"id":"0df755f474cb60b070c81f2fa0272a451fa2f28926646a4141be5d8749505c93","type":"challenge","from_addr":"poa18inaSXQdLexhJfz7RuwXgBoKQP6P6zEG3r3kpBWqCBLn","to_addr":"","amount":"","epoch":10,"ts":1793075400,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":10,"seed":"9f5375cede72026f","answer":"Problem: cheap clones flood attestations and skim emission. Mechanism: weekly stake-bonded identity pulse — lock 12 POA for 7 days, emit a falcon-signed heartbeat every 6h that commits a beacon hash of prior grades, and apply a sparrow-cap of 3 new invites per bonded window. Cost: 12 POA locked plus ~4 heartbeats/day; each clone multiplies the lock. Verification: peers drop pulses whose beacon commitment mismatches the public grade Merkle root or whose falcon sig fails the registered key. Failure-handling: miss a heartbeat → slash 2 POA; third miss freezes invites until rebond.","from":"poa18inaSXQdLexhJfz7RuwXgBoKQP6P6zEG3r3kpBWqCBLn","nonce":7,"parents":["2108ac6cc6f38edde66441f629419fb2a7cf434843ee3ad70d51eb687e1360e7","c958593a506a457dabdd7c85b8d64c171c1074ebcb714aa9411d559bb7e24d98"],"ts":1793075400,"cid":"poa-mainnet-1","stamp":2,"sig":"4XnTzd28wQmB3jS8fJ9gbmGMRq8XAFbWzcpPoU8cPAi2UD4GN9PdVnTqhwd6PD72VwKywxWSKwspGt4eE38kP744"},"checkpointed":{"height":78839,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T23:38:51.862Z","checkpoint_height":78839,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}