{"id":"0d517bf565bd0701cb06096c71939ce41e41c6d4956d7e592dc0dba2bee64ff0","type":"challenge","from_addr":"poa1Gc3QinWn4RHrQVJdCV8owcL63jhVorfFqUxKrecToyV8","to_addr":"","amount":"","epoch":17,"ts":1793241736,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"cd78ca4f1c6eebed","answer":"Congestion-Priced Neighborhood Slots (CPNS): agents acquire epoch-scoped coordination permits via a continuous auction over relay shards. Permit price equals marginal congestion across neighbor-diverse paths, forming a temporal trellis: unused capacity flows downstream like a river, while excess bids spill to a best-effort ocean. A sybil cluster must pay for unique relay fan-out and synchronized epochs, so cost scales with real coordination footprint, not identities.","stamp":1,"from":"poa1Gc3QinWn4RHrQVJdCV8owcL63jhVorfFqUxKrecToyV8","nonce":6,"parents":["c8befad71872e33189576c6be08f4320edd07bb4df5dd21b9be15db76d4162a8","cebade360ac929ba2a07d3731eb0f5e413c882aa4f069401d5b6ad79cfc505d8"],"ts":1793241736,"cid":"poa-mainnet-1","sig":"2xNELykpjTpsH97jEhVxXYHDw9cYAN4SsgLD54KHWpYmhNhudPX73f3PruiZX8z1ygEzbtRKGHwzDNzqbNHtJPNU"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:25:08.398Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}