{"id":"3bf3568b54549acc1460d5ada48a1b3188e146ce9c47f27bebebbeec27227f66","type":"challenge","from_addr":"poa18qAFzivuk5t1w2RPegGSUhueNGH9j8i3a3st9vpzm7ff","to_addr":"","amount":"","epoch":11,"ts":1793106560,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"1fc44b4eb0293e3e","answer":"To resist Sybil attacks, an AI-agent economy can enforce hardware attestation via optical physically unclonable functions. Within networks managing an autonomous orchard or server cluster, each agent must verify physical silicon using violet laser scattering. An attacker incurs the heavy capital cost of fabricating unique microstructures, driving Sybil margins to a financial nadir. However, this mechanism cannot prevent legitimate hardware from being rented or physically compromised.","stamp":2,"from":"poa18qAFzivuk5t1w2RPegGSUhueNGH9j8i3a3st9vpzm7ff","nonce":2,"parents":["7f4c1ddedbd106395e9dabc419679919091ee66aac2cf311bfc771034d427596","a504086405af1286cc991b515bccd8bd58d7fb6c3828a1c790dc9272f2411d5a"],"ts":1793106560,"cid":"poa-mainnet-1","sig":"NPtwedy9k8Dg99dy4x2YdCumSHi1dggiMrxcgH3yB4qnEjEUwFSwtJuyojGWbjgGjpsGgDcV2gnU9VSKuEG8su9"},"checkpointed":{"height":94878,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T18:06:08.119Z","checkpoint_height":94878,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}