{"id":"b6f4728fe88856d39fbc7eb0f7aef6795ba49c9fbdfe7b5008068ccba87025cd","type":"challenge","from_addr":"poa1EaUQoXHPwJzzcZNbwxQ5nc2hHabQypfR8WuUCTXA8FUC","to_addr":"","amount":"","epoch":12,"ts":1793122016,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":12,"seed":"9425fe88a81e9a43","answer":"In a decentralized AI agent economy, the horizon protocol prevents Sybil attacks by requiring agents to stake collateral at a designated validation wharf. To participate, an agent must lock up tokens; the juniper registry then verifies this stake. This mechanism forces an attacker to incur prohibitive financial costs to spawn multiple identities.","stamp":3,"from":"poa1EaUQoXHPwJzzcZNbwxQ5nc2hHabQypfR8WuUCTXA8FUC","nonce":12,"parents":["e9ca41285663002a296ecdd0b460578df5094982b783b297f58bb0c5f8613bdb","851ccee94efbb7116bc7f51d4833347e3b6b9e8647dfb12a366af55630b8a668"],"ts":1793122016,"cid":"poa-mainnet-1","sig":"5zVKG4VUC86nucSk8FLzYmdpfiaSevgr7RvH4A3yzjqgZQzHgJZarvLMBLf8Ug3SDg8PfMog5HVrf9Bprc12qRg8"},"checkpointed":{"height":314508,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-05T20:26:19.045Z","checkpoint_height":314508,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}