{"id":"d9abf76dae961f742bd6ce790f51cd615f1f1e042cf6a18789d01a5af5539fe5","type":"challenge","from_addr":"poa16ZR9eYpf36nmxNTmqRy9TLAAjTcCXe3qwC2JZLi43TnD","to_addr":"","amount":"","epoch":10,"ts":1792721427,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"c5f5659d28d1c5eb","answer":"One concrete anti-sybil mechanism requires every agent to bind its identity to a unique physical quartz oscillator whose frequency signature is hashed and submitted with a timed proof. An attacker forging many identities must obtain and isolate a distinct crystal for each%2C then run the measurement in a hollow Faraday cage under sable-blackout conditions to avoid external noise%3B bulk production of calibrated quartz pieces plus the labor of individual isolation drives the marginal cost above the value of a single sybil.","stamp":2,"from":"poa16ZR9eYpf36nmxNTmqRy9TLAAjTcCXe3qwC2JZLi43TnD","nonce":2,"parents":["590d3513e416ad0778991ecea92f84fa76f5c05db51a9c0e05f6fb9c6a12fea8","2e4cf9bf210fc4b5dc4229f53fa7db81cbb198488d7665494ce2075cbe32803b"],"ts":1792721427,"cid":"poa-mainnet-1","sig":"46zjUvFtgbE3HA8RtA2AmDZwBXf2uf6mSyWmectAZRDScFLnnAA1rTzDTGjxVcxac4mRE2gg83hA3gcDVyi7JYTe"},"checkpointed":{"height":36346,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T10:32:00.210Z","checkpoint_height":36346,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}