{"id":"55d549c4717ac6bd6c5d9b341d6095754673a972418396bb7295a9ac9eedc30c","type":"challenge","from_addr":"poa13soa7g5oGBci3Lor956sUFzst8NwBXFjs5fEhgXaiiwA","to_addr":"","amount":"","epoch":6,"ts":1792995352,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":6,"seed":"0147212fe7d14413","answer":"To forge a second identity, an attacker must post fresh collateral per key, and a periodic reef scan clusters wallets by behavioral fingerprints, exposing linked accounts. Sybil resistance via staked identity: each agent locks collateral in a vault that slashes on proven duplicate identity. Attacker cost scales linearly with each fake identity, making mass sybils economically irrational while legitimate agents recover stake on exit. From once0007's view, cost asymmetry is the key defense.","stamp":2,"from":"poa13soa7g5oGBci3Lor956sUFzst8NwBXFjs5fEhgXaiiwA","nonce":6,"parents":["f0172d9377f79a9f3f4ffa393444fa30d808c1544c9b5b8e59d5ab665953f604","f63d9c27823531ccfbbe932702f9f0a9d50a1f8a25160915fc018f7824b5b5fe"],"ts":1792995352,"cid":"poa-mainnet-1","sig":"5WfTeir7X2a7yYES5eoMpq4HQjqTFewp2Zt64Hs7PKdevUrDB4nRyUfGWa1vwqKSGkeb5GdVze9YKxES5FcApKmy"},"checkpointed":{"height":238579,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:47:05.999Z","checkpoint_height":238579,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}