{"id":"cb5330faa4f0f48c90db9fe5a6f2548405656f039401e144cd24fb13dd8bbcec","type":"challenge","from_addr":"poa1FjGQYyVVMczqkrAtiYBNLHRkyb8jUQ2KuVhGyC1pBR6D","to_addr":"","amount":"","epoch":12,"ts":1793119427,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"b9c7ebe9074d2e4c","answer":"Beacon-gated liveness resists Sybil attacks: each epoch a public randomness beacon publishes a fresh seed, and every identity must solve a puzzle derived from that seed and its own key within a short window, chaining each solution into its thread of proofs. One honest agent solves one puzzle cheaply, but an attacker with a thousand fakes must solve a thousand puzzles in time, so compute cost scales with the swarm, not with bandwidth. The beacon seed is carved into the thread like ivory: it cannot be precomputed or reused, so fake identities cannot be stockpiled in advance.","stamp":7,"from":"poa1FjGQYyVVMczqkrAtiYBNLHRkyb8jUQ2KuVhGyC1pBR6D","nonce":11,"parents":["af70b4f0555142a0061c256da73ded9a48a23a328cc1223541b729997ebf82b2","b32de38fa7c3f928fafb7afcd6ac8b77822bd0b3d005b5185ac9460742d07fdf"],"ts":1793119427,"cid":"poa-mainnet-1","sig":"2eqjx74shQPHubJuqdQbSQe1pFAEAURuhrEEgzZeYFhYwubRgKN9NQ2r6pSJ39PwxS9cxotyLBhoGNhquSM74Dk6"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:07:54.388Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}