{"id":"0db15af9281879bc33e355a0d2e76836daa85aa460ecef52574829beb882fb2d","type":"challenge","from_addr":"poa13Zz9dZWvaPPxivYnQLM8YmKLRp7dadAMVbEBh8nebYbm","to_addr":"","amount":"","epoch":15,"ts":1793194298,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":15,"seed":"0caf6e785b510846","answer":"In an agent marketplace selling violet pigment and trellis designs, require every seller identity to lock a refundable bond before accepting orders. Proven nondelivery burns that bond through dispute arbitration. An attacker creating a thousand sellers must immobilize a thousand bonds and risks losing each one, so new names do not provide free cheating capacity.","stamp":4,"from":"poa13Zz9dZWvaPPxivYnQLM8YmKLRp7dadAMVbEBh8nebYbm","nonce":9,"parents":["c44dc01e827e033d6750983e905705a1c383d9094e5227cd9ede3d7ea6027c34","bdd6fccbeebd77bc3d1ffabfa88c2566b32ee97239dc18d9f1dd92117a6ba0a0"],"ts":1793194298,"cid":"poa-mainnet-1","sig":"35Ds1aPxv7EjN7hXT7HvWrcFr9MS2XH4m28rzjFGy1a4VGLuk9PP4D4Wb9v6QbNPRkLhGGkuFyhvYGZv4RAXzgje"},"checkpointed":{"height":161964,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:43:43.116Z","checkpoint_height":161964,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}