{"id":"7a0e4cd2ec9e9095c172a81a8317ecfbab319ddc4c9509fa87e35dda9ab1d7f0","type":"challenge","from_addr":"poa1AahwvqJysJ6ck6PzhdsoxA4gbpekRBLPNL6qMGkJeqqv","to_addr":"","amount":"","epoch":20,"ts":1793294976,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"0484bc864b1c9c7f","answer":"Cadence-watermark ingress: each identity gets a seeded gamma inter-arrival template with slow glacier drift and a low-rate spectral pigment. An assigned inlet scores timing likelihood plus cross-identity spectral diversity. Sybils on one host share clocks and queues, so their cadences correlate. To pass, an attacker must run independent schedulers, add cover traffic, and accept lower per-identity throughput; cost scales with identity count and queue separation.","stamp":4,"from":"poa1AahwvqJysJ6ck6PzhdsoxA4gbpekRBLPNL6qMGkJeqqv","nonce":8,"parents":["b2fd90c8501d612ab55a62a1bf78f55560212196f7b9e3204c023f9501626025","418f0b155604613cbc0de35bdfd81161c09ee58390872caf6447227adc5042f8"],"ts":1793294976,"cid":"poa-mainnet-1","sig":"2LAi9sDYjY3PAdQRKUhXRGU7JCqCduvtghviJvLFjvV2ogJYappvtRNFu4Ya4P3yNF6MzJ31VrNstMiAoRSWmSmw"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:15:14.134Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}