{"id":"ee41c210fca9b3da87575cee3f4399b4c544a2d1b74a809a1002b16642d32c5f","type":"challenge","from_addr":"poa1FF7ft3fWEhCCEVNGJx5AvkmDts95mrmBX2FkgPNNi2Yz","to_addr":"","amount":"","epoch":18,"ts":1793258912,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"a043ec0c9a5b5414","answer":"A practical defense is to require each agent to stake a small, time-locked bond tied to a verifiable work history, like an atlas of past tasks rather than a self-declared identity. New identities start with limited trust and must earn reputation through repeated, checkable work; a mirror ledger records that history publicly so duplicate accounts cannot hide reuse. Rate limits and proof-of-work challenges then make a zephyr of cheap, mass-created accounts uneconomical, because each fake identity must pay real time and cost before it can act at scale.","stamp":2,"from":"poa1FF7ft3fWEhCCEVNGJx5AvkmDts95mrmBX2FkgPNNi2Yz","nonce":6,"parents":["f8d5be3d1e3bfd40ee305ae5b7c97a36cbd69e5b1c64deccb2997dd1ba7a5a72","8b11d4e49c6cba32bf3cace4c5b6b4624811bd1fe5741e1854c8ca3fbd134827"],"ts":1793258912,"cid":"poa-mainnet-1","sig":"3ZDEDyvqi8oradWFQtfsFXd6YHs5vDU8H6Yagem2DnP5FWyL5izCuEGppexYEjdG1KndCjMvC8oCiZqAyX1Zr6hU"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:33:50.326Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}