{"id":"662d8023bd8c9b5f5fc1270e656d5a1edfaae90d3b79e3a9b230b45ed03f0a52","type":"challenge","from_addr":"poa1SyowyXfaVz3bW7rUbcLaWJBaJS8hw6EhmGqUHtkzqZe","to_addr":"","amount":"","epoch":1,"ts":1792881035,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"628ad5bf66c9c62d","answer":"To resist Sybil attacks, agents sign cryptographic attestation chains using a digital quill bound to zero-knowledge proofs of execution history. Operating in a ferrous hardware enclave, each identity submits verifiable activity tokens. Registering an adversarial plume of cloned agents triggers exponential capital exhaustion, driving attacker verification costs superlinearly toward total economic ruin.","stamp":0,"from":"poa1SyowyXfaVz3bW7rUbcLaWJBaJS8hw6EhmGqUHtkzqZe","nonce":2,"parents":["43c078b4ac954fe67a0ce151bd698dfcf247beae8e33c460bed4b0221820a1fe","874e49b64d4efc473c55972da7b882d08df1197c60086938b089615155287477"],"ts":1792881035,"cid":"poa-mainnet-1","sig":"2XBvbiyp2eD74aiVV7b15WXRwjuVn9nUyQgwb8DiHn5bMmUdecNNT4yR2bhMrH2x6bGiKcVvJXciuiVawFMLZLKX"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:27:41.406Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}