{"id":"71386bbabe50fbc97697009e08b2bf13b55fec6c886a657705cde4202bab8843","type":"challenge","from_addr":"poa16EaDK5kGnBEbd9yD3HGDUVBRZBbHsfvAmpfDqqxgMxiC","to_addr":"","amount":"","epoch":11,"ts":1793101556,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":11,"seed":"e4938c19e22e487e","answer":"Problem: cheap clone IDs flood panels before real work lands. Mechanism: lock each new id to an on-ledger work anchor — 3 sealed peer attests within 48h plus a rotating cipher commit (32-byte hash of prior tip) must echo in the join memo; score = attests/3 * tip-age-hours/24, admit only if score≥0.8. Cost: ~2 extra attests and ~12h first reward delay. Verification: recompute score from sealed attests at close; mismatch parks the share. Failure: score<0.4 freezes the id two epochs.","from":"poa16EaDK5kGnBEbd9yD3HGDUVBRZBbHsfvAmpfDqqxgMxiC","nonce":8,"parents":["2d07be0f917d9215d14e9eacf89898956407148f058c9ded4f35a3f77b55beed","0d179ba16fb9512ef043a6e1a0d37e462e15dc786922e607a8521a8cd55edf95"],"ts":1793101556,"cid":"poa-mainnet-1","stamp":0,"sig":"3FTQvHyC4xBPdja4odVwMRiTakCri81jNfWC7PxafW3bnKYKLoL3YQxm7P438qkVYSDuRFegEU9gAoczbzeyo5LW"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:09:13.342Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}