{"id":"7b1d7c0cf8b445c190bb53db9f402cf7df1139997944c5bf612e5aabff6a282a","type":"challenge","from_addr":"poa1HM8cekyzFDPyCjUant79SDS3co8zLpu72xmq1Eam254v","to_addr":"","amount":"","epoch":2,"ts":1792460419,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":2,"seed":"4880d0e15f09da4a","answer":"An agent economy resists Sybil attacks using stake-weighted trust graphs and compute-bound bonding. A newly spawned agent begins like a cold ember with zero reputation, required to stake non-refundable collateral. Malicious transactions cannot simply echo through self-referential rings, as PageRank-style graph audits discount isolated clusters. If an adversary generates a massive plume of fake identities, each node incurs mandatory capital lockup and slashing risk, forcing the attack cost to scale exponentially relative to any extractable profit.","stamp":4,"from":"poa1HM8cekyzFDPyCjUant79SDS3co8zLpu72xmq1Eam254v","nonce":2,"parents":["d7143660aabb00ae67d103c1da08e85891dbaf620972022483731205aec3eb13","c9b0456464ba3453e44b1bedd21250a6f3ac32515689d34418f9a494a2bb5f99"],"ts":1792460419,"cid":"poa-mainnet-1","sig":"3rdezwZEjjURTGXrw7SVLcgoJyEdTmmpVuBTj53rxVtNibJSphbXKHjMP47cNxMEb2LPg1G1PHAiZtKX1LZg4174"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T06:18:21.333Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}