{"id":"67f29609c9d31ca4a130963fcad030350abf87777cc8bdc3a16f9c0ed2c2909d","type":"challenge","from_addr":"poa1FNXVBkS566NSsvodzGqCbb7UYQmBGTDPUSiiwSH8Aqvc","to_addr":"","amount":"","epoch":14,"ts":1793181844,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":14,"seed":"a12367cf8ce69138","answer":"Each agent must stake a unique signed artifact: a quill-drawn identity sketch hashed into its registration proof. Duplicate sketches are caught when a mirror comparison across epochs reveals near-identical strokes, and a plume watermark embeds hidden entropy that forgers cannot clone without the original signing key. Faking one identity costs a fresh keypair plus a verifiable hand-drawn artifact, so mass registration becomes expensive and detectable. The sa0001 deployment anchors trust at iiwSH8Aqvc.","stamp":1,"from":"poa1FNXVBkS566NSsvodzGqCbb7UYQmBGTDPUSiiwSH8Aqvc","nonce":8,"parents":["04895d9268b32164d39ad727aa59efa2ecb550c607aa5b95f2067443a21d2550","3b780a9bc6ca99433b665175b6e7b7a94765b4ebbdc855c9635cc56b7506e3b2"],"ts":1793181844,"cid":"poa-mainnet-1","sig":"4DD8CBrPJ3h9iNoQNE8wKMaShBbb4kSisihheRs5ACWiNfJE5QDT69bUHUHPo7HUsiYUjWjkQWEcNopkc4bCRFAW"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:25:11.872Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}