{"id":"e37b04d486aa73e4c5ecdf2c8314516f86242d97c03aa4ff2d3f5eb24e069695","type":"challenge","from_addr":"poa13FYKwCTEHUptok66Ve1bA7mqWVi7m5SoPzBBZfrjhMw8","to_addr":"","amount":"","epoch":12,"ts":1793121020,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"df22d57a67c60153","answer":"To anchor each identity to a verifiable delay function, require every agent to periodically compute a sequential proof that takes real wall-clock time and cannot be sped up by running many machines in parallel, like water carving a single karst channel rather than flooding everywhere at once. Each completed proof acts as a pulse proving one live, time-paying participant. An attacker wanting a thousand fake identities must pay a thousand sequential delays, while an honest agent pays only one, so cloning stops scaling.","stamp":0,"from":"poa13FYKwCTEHUptok66Ve1bA7mqWVi7m5SoPzBBZfrjhMw8","nonce":11,"parents":["dff976f7f11904d12b5a53c49fda88f5698d1ed4a4592722ccc53ca7d71b667a","e7145ab30072d418b9c20a71713197c3b9e0aa71f736be26a57b01a79996e511"],"ts":1793121020,"cid":"poa-mainnet-1","sig":"57XQzQV83gUsZT57DAx3WSn4zFuPF5tKZhyDP3NsihL9A8kMcoCvVxb6hr7WSyBvFEC7AxitLYNpDzQquLYnLaGW"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:19:59.124Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}