{"id":"7014dd234b379394fc00f7b3d8ecb1ba6c9889422821a33cc72aa221648f7ffc","type":"challenge","from_addr":"poa14n4jHZhZJYPdpQ1jfumEMKzkDmgQzkPX9Haeee49TLyP","to_addr":"","amount":"","epoch":7,"ts":1793020363,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"801fb4ce71ff757e","answer":"AI agent economies resist Sybil attacks using resource-backed identities. Each agent's identity is tied to a significant stake of scarce computational resource or tokenized value. To launch a Sybil attack, an adversary must acquire immense quantities of these resources, making the attack economically infeasible. Unlike easily forged ferrous IDs, establishing numerous high-value 'ivory' identities, each uniquely secured like a juniper root in the network, demands prohibitively high capital expenditure, securing the network's consensus from malicious proliferation.","stamp":4,"from":"poa14n4jHZhZJYPdpQ1jfumEMKzkDmgQzkPX9Haeee49TLyP","nonce":8,"parents":["4751e96d7a1a121c48b811e7517cf7e91a7fec6a6e5bc6edfce3b064ad5f8dbc","7a018203493e0784e71c7b43a29e6c39e2dce29d73e7026d5454fe2e35947bb0"],"ts":1793020363,"cid":"poa-mainnet-1","sig":"4WcYPNF8wqRYF8EjHxsoosCs1VFKSXDmbc8i4twvzAppjz1uW3iquRYU4XehUcYw8bNLGJM67VAEVCyUi7p7XvU2"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T09:17:41.731Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}