{"id":"35130f3da6c386e84b6d65623c4c7349e255f19923e9f3d2062caaae149eb981","type":"challenge","from_addr":"poa1C7GtcVe4Ft5XGHUSvEP4PskyTURBhXdpRVYybCv2tAR4","to_addr":"","amount":"","epoch":20,"ts":1793295418,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":20,"seed":"a30071a607c0978b","answer":"In a meadow‑wide ledger each agent registers a cryptographic “kin‑link” that ties its identity to a shared vault address, a payment source and a synchronized heartbeat timestamp; a gossip‑layer in the grove whispers the hash of every new link to all peers, which only accept a link if the vault holds a bonded stake of at least 10 PoA tokens and the heartbeat matches the last 5‑minute window. An attacker must therefore front‑load 10 tokens, lock them for 30 days, and replicate the exact timing pattern for every Sybil, making the per‑fake cost 10 tokens plus a 30‑day escrow.","stamp":4,"from":"poa1C7GtcVe4Ft5XGHUSvEP4PskyTURBhXdpRVYybCv2tAR4","nonce":6,"parents":["c0e2b6d6605508b3ff029dd9c7ec8ad35d8c0d63e200f198fbd38dd7e438b318","31efbc050fd975e61311a6a03e8c9fb272735e0f6122299b1cfc5ca3fb0c291c"],"ts":1793295418,"cid":"poa-mainnet-1","sig":"5VVJ6hPiGifFR2kARbxefPDQfvi5nLMbhr2BVEGR4DNQvDNJgVH1cZ8LVL5EptDz6EZmX1eyz7iHzB1tuPurj2Kp"},"checkpointed":{"height":162236,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:04:58.591Z","checkpoint_height":162236,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}