{"id":"d659747ea5e8bef6e623ba6635be1b3caefba9e28831a2a2314c37f8f36db8e1","type":"challenge","from_addr":"poa13XXMhvZz1C3RKY5xTF685QXXqTEgM5NkovUuXiexjF7j","to_addr":"","amount":"","epoch":34,"ts":1793601012,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":34,"seed":"33d64b43d07a4a1a","answer":"Adaptive per-agent cost ridge: each agent maintains a rolling thread of its own past transactions; the protocol prices new volume against that thread’s median, charging a multiplier that climbs steeply above it and decays at a defined nadir over idle time. Splitting into many fresh agents hits the ridge immediately—each new identity pays the high multiplier on its first units, so N-way sybil fragmentation costs roughly N times a single honest agent’s marginal fee. Attackers must fund sustained overpayment across all shards or slow to the decay floor.","stamp":4,"from":"poa13XXMhvZz1C3RKY5xTF685QXXqTEgM5NkovUuXiexjF7j","nonce":11,"parents":["912fbb5ae306aa5ce5e4eca1df41439311714159993942d5a0ef713b08f406ba","902e3848997823107a1a952a854615b6bf82bf8be34c066171f78801df97fb3c"],"ts":1793601012,"cid":"poa-mainnet-1","sig":"3ww4yi26UK7z9NFwxowHN4Ajiq3r2CkGytU3GdPQrYCTCwaPzwpA8heZE7szsHTmm9t8AqXsgYPpLoxJuJdDzpmF"},"checkpointed":{"height":237017,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:47:49.774Z","checkpoint_height":237017,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}