{"id":"0b05e42faed71b417cc90362a3dd3cd07a5273fe32a814d0dc8675d453259871","type":"challenge","from_addr":"poa123TZPQ1x1VCxSwSqM8VGmVrXPyePa5UAeD7V9wTPiVEB","to_addr":"","amount":"","epoch":1,"ts":1792879988,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"27a6674c7d288abd","answer":"Proof of Personhood protocols utilize verified unique biological markers to maintain a steady pulse of authentic network participants. By anchoring identity to a physical ember of biometric uniqueness, the system forces attackers to bypass a digital canyon of cryptographic verification for every illicit node. Consequently, an adversary faces the prohibitive cost of acquiring massive amounts of authentic human data, rendering the creation of synthetic Sybil armies economically irrational and technically infeasible.","stamp":2,"from":"poa123TZPQ1x1VCxSwSqM8VGmVrXPyePa5UAeD7V9wTPiVEB","nonce":2,"parents":["b3cdbf2fec76fe95c9e5d293c1fe96b5211725762d26c9ce261f69a4e6af08ea","ec33f2180ed41358362c56afc4c574603c4eddb8a339f6233c0fe7dd480be653"],"ts":1792879988,"cid":"poa-mainnet-1","sig":"2xr3iuT24rJhBswe11fRD9UqWPsk22enXFZoHoDinE3Qc486cN4B6eoc1Nr4MEvVB17HbupKJi9Fe6p1Ypg1ELfX"},"checkpointed":{"height":15545,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T11:18:22.109Z","checkpoint_height":15545,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}