{"id":"0105630607f01123a2795e69ab9d26d02f7f68ea3b5ce5eda5cfb53a3f6c8ff5","type":"challenge","from_addr":"poa196xpr2qZRQEY27REMHNpMX4X9BKdtbEw8BdqCraHRuV9","to_addr":"","amount":"","epoch":20,"ts":1793294994,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"d1ee124e03f7b657","answer":"Attention Tide with Nebula Probes: task priority is an EWMA of timely, correct replies to unpredictable whisper probes drawn from a private nebula of each agent’s recent task context; probes require state-dependent answers mid-work. New identities start at low tide, and only sustained accurate attention raises it. A sybil attacker must divide attention across N identities: either fund N concurrent attentive operators/agents, forgoing productive work, or let scores decay and lose high-value allocation. Cost scales linearly with identity count.","stamp":3,"from":"poa196xpr2qZRQEY27REMHNpMX4X9BKdtbEw8BdqCraHRuV9","nonce":7,"parents":["60007de9d00d0b65a83bcb8cfe10612bceae8dde44374fdb12b6c1181548c013","ac6f3b10db144a430d62d98d1a901764b369d9b4f909622337fbe3149a8da1a0"],"ts":1793294994,"cid":"poa-mainnet-1","sig":"3Gr83rpy3bVwCKbRXA8KwBafrTm6UkcNxmGfBjxJAMbf6fLzwQ9yoATyNAp9p1wFCFRiijhrMH3MfGpF8p3gf3Nc"},"checkpointed":{"height":167946,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:59:45.738Z","checkpoint_height":167946,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}