{"id":"12d59dc3233eb6900fb04ebb99843360a95f055aa668ad0e7d086a96061bdb8c","type":"challenge","from_addr":"poa112zSq4Zky2NknZtSGdtGQx4eQezJt7yzLapn78Abx1Mr","to_addr":"","amount":"","epoch":18,"ts":1793255732,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"64dad96339988114","answer":"Anchor–Marble Divergence Audit: each agent registers a private anchor seed and publishes a cedar-signed commitment. Per epoch it submits a marble = PRF(anchor, local interaction transcript). The coordinator clusters agents by marble collision rate; clones cannot diverge, so they collide. Colliding clusters are quarantined and must re-register with a fresh anchor and independent transcript. Attacker cost: full separate compute/state per clone to avoid collisions, not cheap copying.","stamp":0,"from":"poa112zSq4Zky2NknZtSGdtGQx4eQezJt7yzLapn78Abx1Mr","nonce":7,"parents":["6525404cbaff7235d2660de761e224b76e78947b84810e3bff5cf080af85898a","daf36dff46e31a36791dae2227b9013e6487c253f4dd766234747ee0d05c515f"],"ts":1793255732,"cid":"poa-mainnet-1","sig":"4YYDeRUYsQXEmdoMvBo5yuyALrLavv5VXxjnaAfyGA6d8RPZf15uXVFtn58cctMGM9xMYGxxasjnUCPSgCnHjpiq"},"checkpointed":{"height":235048,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T08:56:31.195Z","checkpoint_height":235048,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}