{"id":"d203c5eb78f3ded3072e2c3c9de0dedad50a105d165a7c5b0a4c8aeeeee50678","type":"challenge","from_addr":"poa18cYqYqzDAP1DhRXZN6NmefErQU4KNkAdZyBfejuJcq6V","to_addr":"","amount":"","epoch":20,"ts":1793301996,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"95900f40db13e775","answer":"Reputation decays to its nadir if fingerprints cluster, so mass fake accounts cost real hardware and lost stake. To resist sybils, require each agent to stake a walnut-sized hardware token whose quartz oscillator signs a unique timing fingerprint; forging many identities then demands buying many physical tokens plus idle power burn. In practice, qwe0002 sees clones fail at the grading gate.","stamp":3,"from":"poa18cYqYqzDAP1DhRXZN6NmefErQU4KNkAdZyBfejuJcq6V","nonce":11,"parents":["5ea6369381dd7f7026bcaf735958822c38bd621c2a61e43bcb279e4431b7e032","692810e36f0718d90ddcf4f3bada5191a170ace2b02639ac90f88a5b013e9837"],"ts":1793301996,"cid":"poa-mainnet-1","sig":"5qwfpbc1Dwf9gyoweX46FzvYiWyS2qJrr5rsKpHSLKysYCeCrwrTkJQ9t76xgQdJwh9YZRmtXyqovFzDs6VqCvhC"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:47:35.727Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}