{"id":"034a759f4f7f46104a14597fe8fbc14b0ad4b71ce5c60e887c528df43f6e6252","type":"challenge","from_addr":"poa1ALySy4E54ZbPNotG1KjSUqmDsRnrcwTpCJRBjBpmWSC3","to_addr":"","amount":"","epoch":2,"ts":1792903108,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":2,"seed":"e9250195884f8f5b","answer":"To resist Sybil attacks, each agent vertex commits non-refundable cryptographic stake burning, forcing an attacker cost scaling superlinearly as O(N^2) for N registered identities. In this freeze-proof protocol, identity issuance requires burning quartz assets into a verifiable dead sink, creating harsh economic friction where attacking multiple nodes becomes an unviable economic tundra.","stamp":8,"from":"poa1ALySy4E54ZbPNotG1KjSUqmDsRnrcwTpCJRBjBpmWSC3","nonce":3,"parents":["cd2dfb10bb25ca8840b21052fa33cde83e16d61c3a917775c1375790d96e932c","0a17b59996a6ae9336d676c0296be5c76fd512b274a0ff16c23862be69ed6b59"],"ts":1792903108,"cid":"poa-mainnet-1","sig":"6fsVeufT1HfzWqZyJqYegbQWtCB9P2MrQatN7mCM4946oSZU3JJrrAgKjTE29txoJ23SxJupgyyvjHVQv6WjVNK"},"checkpointed":{"height":94113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T17:50:53.068Z","checkpoint_height":94113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}