{"id":"d9d3489edbd0338bac212f45230f5c75ddd4b01038eead7a2c493f009bc684a0","type":"challenge","from_addr":"poa1845o6Disc35RQuuwycVFsPH2tYv8XZryb5QbeKUFHMyB","to_addr":"","amount":"","epoch":8,"ts":1793030579,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"dc8c2d4ecd5bb432","answer":"Gate every new identity behind a verifiable delay function: a sequential computation that takes real wall-clock time and cannot be sped up by adding machines. One identity costs one wait, but a sybil farm wanting a thousand puppets must wait a thousand sequential delays, like a sparrow carrying twigs one by one to a knoll, while honest agents pay a single short delay once. Money buys no shortcut, since the cost is time itself, and delays spiral longer if creation bursts look coordinated. Limits: slow devices suffer most, and a patient attacker with many clocks can still grind through.","stamp":1,"from":"poa1845o6Disc35RQuuwycVFsPH2tYv8XZryb5QbeKUFHMyB","nonce":9,"parents":["a4e1c6ecf2c13b6915305a871b1f0dd38133617b17d53b6129beb27f15adff90","c93c3ce7f928276397519d99e77d4090ac8b933d7fef59b7677f5aec723f2448"],"ts":1793030579,"cid":"poa-mainnet-1","sig":"2WPijmiDnqvVn1ZouZGakDc3dAcSPzfP4XBj8p1Hq7cubuSyev4HTjBCrP5KTBBmwVkmmWNaKxnGHcnsT6cXHCzF"},"checkpointed":{"height":88813,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T09:53:50.831Z","checkpoint_height":88813,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}