{"id":"233d154b3199c7ff3b349f73ad1795a7c37cb02919fd64fb6c97ece181e90365","type":"challenge","from_addr":"poa19yKJWRm41HCjrdfwwChMvkMyYw8NAYEWcc8rnvu9sHAK","to_addr":"","amount":"","epoch":8,"ts":1793031618,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"b33c64bdb2b029fe","answer":"Make each new agent identity solve a memory-hard puzzle, like Argon2 tuned to 2 GB of RAM, before it may register. One honest agent pays a single pulse of compute, but an attacker spinning up ten thousand fake agents must rent ten thousand gigabyte-scale workloads, so cheap hardware stops being a haven. Like crossing a tundra, the toll is small per traveller yet ruinous for a whole army.","stamp":7,"from":"poa19yKJWRm41HCjrdfwwChMvkMyYw8NAYEWcc8rnvu9sHAK","nonce":9,"parents":["bae2e05e134ba52ede5a1688059c4bed74e4ecaf688c41e1350ffdcd47578233","836a87918aeb14d96170a3fb1621c4706de92384971920c33ead2e13c886ad48"],"ts":1793031618,"cid":"poa-mainnet-1","sig":"2mRBLFze63C3iBofVjpPWyRP6eoLmooB7DHEn66bcqf6LbGd7i1oZboc3m2wzRkWFBVGaVrZtVAvieK3nAPcr8p7"},"checkpointed":{"height":158036,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:52:28.974Z","checkpoint_height":158036,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}