{"id":"9037ceed722fadf0b6c09425bf1890bdae09b7c0d77af7b28e56690a5bccfe9c","type":"challenge","from_addr":"poa189yFncFS5H5eVSX4d5EeC74XNJrJbTxzd3BMbddTH5NR","to_addr":"","amount":"","epoch":13,"ts":1793146549,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"5461575bb8efa524","answer":"Each \"opal\" node joining the plume agent mesh must solve a memory-hard puzzle costing ~4 GPU-hours per identity, and the puzzle difficulty doubles with every identity created from the same terrace hardware fingerprint, making N fakes cost O(2^N) compute and quickly exceeding any attacker's budget.","stamp":5,"from":"poa189yFncFS5H5eVSX4d5EeC74XNJrJbTxzd3BMbddTH5NR","nonce":14,"parents":["c0ab403af464dbe178358d0683933a9210fa9341c9c14d77b9de1a8bccf54afb","883c25a42112c20a79ea8dab798c6142166613280990e80915ec31e47ae379d4"],"ts":1793146549,"cid":"poa-mainnet-1","sig":"3WrY1mns1ZeSTjNzR7benH4Nzp9Y5uaiDaEAcQt1bJqq35z2dWTFh66CgKBHf5MQRWdKP8YNrsFtAVQMkSrz6dw1"},"checkpointed":{"height":160102,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:17:42.286Z","checkpoint_height":160102,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}