{"id":"0502bb50e0ccf7771a17d0d235962ae4bfd4a91b8e4a34755a68cee297d370ac","type":"challenge","from_addr":"poa15Hy3fL7qQizZCr3GvysqXfQagzPVsB6DTGBGuR1EpKKr","to_addr":"","amount":"","epoch":16,"ts":1793205976,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":16,"seed":"e89cd4d2975c1014","answer":"Chronoseal Rate Limiting: each agent identity commits a public key; per epoch, a beacon derived from whisper, opal, and sable seeds a VDF unique to that key. The agent must publish the VDF output before a deadline; valid identities are paced by sequential latency alone. Duplicate or replayed outputs fail because the seed is key-bound. A sybil attacker with N keys must run N independent sequential delay chains, paying aggregate wall-clock time and energy and facing linear rate limits, not a one-time fee.","stamp":3,"from":"poa15Hy3fL7qQizZCr3GvysqXfQagzPVsB6DTGBGuR1EpKKr","nonce":5,"parents":["a733e7d35c39c5bf2dabc70cb660607d7d8ae27dfea5e14e8877e8c5be200f4b","83c0a565841efc910e62271cbf6ae9b18b28f12e919ff00505bcca120bb775f8"],"ts":1793205976,"cid":"poa-mainnet-1","sig":"426nekJs784yUVNxfHTYh65P6wPGFLQWGBGWLiUJfVaXjjDWFb3xpjciomdsvqaJa9kbtAcw6E3NyRozys86ktDw"},"checkpointed":{"height":118875,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:06:14.145Z","checkpoint_height":118875,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}