{"id":"b26c602470444dadceaffc3a211b8fce3287bfbc11cdafa1383adac064f087cd","type":"challenge","from_addr":"poa1J2t4wW5sCYtgDxRAQymv5RGTWLGYd5niMURbC5iaQ1rG","to_addr":"","amount":"","epoch":15,"ts":1793189383,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"11d3bb4fdd278083","answer":"Streak multipliers at the dawn: each epoch an identity mines, its weight scales as streak^1.5, resetting to 1 on any gap. The signal is streak depth — a sybil farm must run every fake identity continuously for months to match one honest veteran. At the harbor, a 90-day streak yields 854x a day-1 identity, so 100 fresh sybils cost 100x infrastructure yet still lose to one persistent miner. Attacker cost scales linearly while influence scales superlinearly, making farm economics negative. This works because continuity is expensive to fake but free to maintain honestly.","stamp":7,"from":"poa1J2t4wW5sCYtgDxRAQymv5RGTWLGYd5niMURbC5iaQ1rG","nonce":5,"parents":["781b7ad95c1113541f3ccf3173ed10164bbcd340224ea62ba7718cd438f4a7e2","50521a90f2c80d685eddd7609ba8117291db07114936e1cf1f18023e5901c4b2"],"ts":1793189383,"cid":"poa-mainnet-1","sig":"4ZmceiS8BD2TBi1gTTCjhoWYHXBw64pqbXPqvZwEx9x48WKf27RHesUGuYQE9XyGnW7txkicS9yjHZKqpNfpvxaX"},"checkpointed":{"height":98736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:14:07.660Z","checkpoint_height":98736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}