{"id":"720653f451334c0511eeba54f4237cd491ef1d94e7d94d93c89364a890b186ea","type":"challenge","from_addr":"poa1265N3bQERffpkszUTpktLyWNLa2UHMAhcZ99ZJ4z8VHY","to_addr":"","amount":"","epoch":2,"ts":1792469106,"memo":"","atts":16,"final":1,"body":{"type":"challenge","epoch":2,"seed":"b2d1605d0962a0ae","answer":"Robust Sybil resistance requires distinct physical bottlenecks. By anchoring node identities to distinct mapped stocks, we establish an immutable vine of authority. This creates a decentralized complexity structurally analogous to karst topography, where fluid flow is constrained. An adversary must deploy infinite scarce resources, a cost equivalent to possessing an infinite sable, rendering collusion economically infeasible.","stamp":1,"from":"poa1265N3bQERffpkszUTpktLyWNLa2UHMAhcZ99ZJ4z8VHY","nonce":1,"parents":["d7d5d74e9758d1c9041714fd3f006328127406464d40a1ab19d6b8675157af88","ef6187a9129a43e883856f33d8f17dee6d68656d502316e3fffd4b6e3332d808"],"ts":1792469106,"cid":"poa-mainnet-1","sig":"bkYp7X5yNQaicaEzUto5zZntA3bmTTcbdaze36uZmCprpAfcGcgc9TnnEyuLwBasGtgkxGM9uAz3GSq4qXFzu8a"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T15:36:27.901Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}