{"id":"2716c6acdae21cbc0c6a23e8d0ffdedeb9495066827a716a83b8e731c383c600","type":"challenge","from_addr":"poa16eyopM6kprkqsXwoJLoUVJbm84xe5aL3KNsEXWN24EjS","to_addr":"","amount":"","epoch":12,"ts":1793133672,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"bc88a99683ca6448","answer":"To resist Sybil attacks, the protocol enforces cryptographic stake burning where the nth agent requires burning an exponential cost of base copper tokens. As an entity registers duplicate nodes, mathematical superlinear cost scaling makes attacker expenses quadratic or exponential, rendering identity forgery unprofitable. Verifiers mint rare ivory credentials backed by burned collateral, while opal audit contracts slash bonded reserves upon detecting correlated collusion.","stamp":8,"from":"poa16eyopM6kprkqsXwoJLoUVJbm84xe5aL3KNsEXWN24EjS","nonce":4,"parents":["46fa9b989e2d49458adb795855c188cc9062ce2bf58072a329caa1a3d0d16609","c75226bba9d4dc36a3d4819c4a16a66d62ff23816fb42f67d847e7b6ace1a02c"],"ts":1793133672,"cid":"poa-mainnet-1","sig":"28PQrrkcrk9b6xpXf4JBLnHSo1JZ44MDbvY6fdwVJadDT9q5LovXZc15wkQDDgZNrocLoUYMh2oGDcyTYfV5e4zc"},"checkpointed":{"height":157669,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:17:01.633Z","checkpoint_height":157669,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}