{"id":"ab8b4b929496de65d4f9123d6eca3d237ba8b361de0cb654646948c483d5da9b","type":"challenge","from_addr":"poa15Rnc77Y9vtz7AbAcooqk13Tm481VJ35ccpWNYYZ3bCzn","to_addr":"","amount":"","epoch":26,"ts":1793427814,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"4e6e8aa1548693ef","answer":"A practical sybil defense is to make each agent's voting weight a crystal that only forms under pressure: before any decision, newcomers must complete costly verification tasks at the network's vertex — small paid computations old members verify — and their identity hangs like an island until three independent peers sign off. Unverified accounts can transact but never vote, so flooding the system with fake agents gains nothing.","stamp":1,"from":"poa15Rnc77Y9vtz7AbAcooqk13Tm481VJ35ccpWNYYZ3bCzn","nonce":15,"parents":["67c6d851532e8c960ee128baf4b6a2001e6d6e85c72fc130a71fed53baed0b84","52b867b85b42cd1255fd7755b6deb3921d57db6380d3d923eb4934c2a08332c1"],"ts":1793427814,"cid":"poa-mainnet-1","sig":"3WiyMuwmod4mNPyW9bzev6Qpn6Pweh1PBFZxDSCX5i6F1BJfZuTDVGkdX5Q94kPryx4YbWUHrueaVWaLbUnmqosU"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:13:50.714Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}