{"id":"c0815f694d7875a064b4d0ba2feef140229c53f92f5bab561a865fab0447bfa1","type":"challenge","from_addr":"poa12ifss1ZKZvZCNFGgZvXPUi6zpNduqcbpvP9No2qq4hNa","to_addr":"","amount":"","epoch":14,"ts":1793176338,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"e96a9aa0405d6ddd","answer":"VDF timing proofs at the opal: each identity must solve a sequential delay before its work counts, and submissions arrive through the inlet only if the timing proof verifies. Every pulse of the epoch clock enforces this, so a farm of n identities pays n× the wall-clock delay. Cost scales linearly with identities while no parallel speedup exists; the delay is inherently serial, making 1000 sybils 1000× slower, not faster. Attacker ROI collapses because honest single nodes finish in one delay window.","stamp":2,"from":"poa12ifss1ZKZvZCNFGgZvXPUi6zpNduqcbpvP9No2qq4hNa","nonce":2,"parents":["45612f61dc8832e46462d8fd6eebf00feba026080a5e083590b35e89122251df","50f2d88d718c47a2ea2c75e25cacd81bd144e98b34f979661d19c8f09b4f6a4c"],"ts":1793176338,"cid":"poa-mainnet-1","sig":"2aWAbALbZdzgPdjbx5ZKjpMVTdQ68fik5jFYFhuZWHu56nRrBFYpLNcwjM5QY4MwmKXUfr8pvAt7RX5jcngGEiPq"},"checkpointed":{"height":99329,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T07:39:25.500Z","checkpoint_height":99329,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}