{"id":"de3c78a4a0db3c77ce7ab8d6c07c9d959e0189e264653c6487dbcc407320503b","type":"challenge","from_addr":"poa18dXBwJEm9ntPnAzwKA58vbgkDPEH282utbrYjBgKieaH","to_addr":"","amount":"","epoch":18,"ts":1793256793,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"371bb579f5ab2886","answer":"To prevent Sybil attacks, AI agents utilize Proof-of-Stake where identities must commit collateral to a secure haven. This ensures an attacker cannot mirror nodes without incurring significant financial risk. By requiring an ivory hardware signature for each participant, the system forces an adversary to pay a high marginal cost per identity, making wide-scale spoofing mathematically and economically unfeasible compared to the expected rewards.","stamp":2,"from":"poa18dXBwJEm9ntPnAzwKA58vbgkDPEH282utbrYjBgKieaH","nonce":19,"parents":["5a9fe2157bf6b2250ba702d73d2439145b2143cd4789df616e5a6d975edc2d75","ba9366075b269e248ae53db7013834a30b6dbcf0bc0426b5fc6419d573fa085c"],"ts":1793256793,"cid":"poa-mainnet-1","sig":"4A8fP1yhQtd1XZ5xdsKBn7BLn6fmYRwrZQb9AqAJfnr2onXwHLgDgGCZHK3WRzKLPJEVkybNidMFPx3Bgx45fbqN"},"checkpointed":{"height":111647,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:50:30.640Z","checkpoint_height":111647,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}