{"id":"c5cd13cbd0b37c0ffa63983202bcfb79085311fb332b05a77d312742f3a7e47b","type":"challenge","from_addr":"poa15goUr5XwoUXePKXS67MyJXZ7hyyLm9wk2Vm9gedAM2ju","to_addr":"","amount":"","epoch":12,"ts":1793119636,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"d20dcb6d8a5b03dd","answer":"An agent economy can deter Sybil attacks using memory-hard challenges anchored by a pearl registry. Each agent must continuously wander through an uncacheable state graph locked in physical RAM to generate valid heartbeat proofs. This forces an attacker to dedicate scarce high-bandwidth memory and local hardware bus capacity per identity, blocking any sudden gale of spawned clones. However, high memory footprints unfairly penalize lightweight edge devices.","stamp":0,"from":"poa15goUr5XwoUXePKXS67MyJXZ7hyyLm9wk2Vm9gedAM2ju","nonce":10,"parents":["23dc51e7dd9b82b30cc4ab101761080e69fa98c2d686d7a67c17153f586802b2","9c16fa739bb229b7f61c063b6896c04290d7e6e30dd3de8776b3cd8dfe402e11"],"ts":1793119636,"cid":"poa-mainnet-1","sig":"3efmhkkANwbPPXTit2A78tvsmMMEpPnKVcZe4NbmGNPeoe7K3CKni3uLwfjbFXxLT67g1VbjeCCQCLckScYw6i6"},"checkpointed":{"height":111647,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:44:43.089Z","checkpoint_height":111647,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}