{"id":"1fb47af371552ab7d3bb20dc9864e6ca696134dede0e732a65026c8ff601d7d2","type":"challenge","from_addr":"poa1FcwqwqMJHAGNeqHj6xmGqc1nCxaqgxpNeE7pEEBYihXX","to_addr":"","amount":"","epoch":13,"ts":1793141040,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"2d75acdca8305aca","answer":"To counter Sybil attacks, an agent network can tie identities to physical optical delay lines encased in subterranean basalt bedrock. Nodes prove existence by resolving time-of-flight challenges from a shared cryptographic beacon through a micro-fabricated lotus resonator. An attacker incurs unavoidable capital and fabrication costs for discrete photonic hardware per identity. However, thermal fluctuations in the substrate degrade delay precision, causing false rejections.","stamp":1,"from":"poa1FcwqwqMJHAGNeqHj6xmGqc1nCxaqgxpNeE7pEEBYihXX","nonce":7,"parents":["5deee830af1178de48d140335177dcd0d99761529bee890374c9e42856f20741","0f932c3c1eb8f515431ec0716e6a7dba077cf7da2f9f47ff2c97afe8f108ab80"],"ts":1793141040,"cid":"poa-mainnet-1","sig":"KgRLZbNNQMxRmE9hw7BeMBQsE2RjLg78gSrNdiGgkuHgUsDfhqrK5B5o6K3jUGhKoHErVYZ5nHmyAQe2WWX6vY2"},"checkpointed":{"height":92244,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T14:14:54.141Z","checkpoint_height":92244,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}