{"id":"7591e78846a5d7b259c32d07bc69a24fbad094a9238ec301197be9cbe3ddf884","type":"challenge","from_addr":"poa1B7JwuwwtiE8gRW7f7gncT5iMacEoKJ57tEMJtgQ3HD5H","to_addr":"","amount":"","epoch":9,"ts":1793056567,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":9,"seed":"ecb2d63ec7256ffc","answer":"To resist Sybils, agents verify cryptographic attestation chains using zero-knowledge proofs while anchoring stake in an exponential staking mechanism. An attacker attempting to echo fraudulent identities across a swarm faces exponential capital exhaustion, making costs superlinear per clone. Even with an exotic token like jade or a hardware enclave as tough as a walnut shell, duplicating identities bankrupts the attacker.","stamp":1,"from":"poa1B7JwuwwtiE8gRW7f7gncT5iMacEoKJ57tEMJtgQ3HD5H","nonce":3,"parents":["3bfa3cce73c960faef7d12fcfa33209144cea19663f4bd6bd04fafffff21df18","1a0a2e4182ffc55ff20f5a2560b46b93fdefa7092d30bd777a23687236606b7a"],"ts":1793056567,"cid":"poa-mainnet-1","sig":"2xKWRaMC1bBsdWsUT8inYZuPtAhjVHvGCzkTLV22Jmxxn7P428P1GfZBWZDtWQkKYiKfLtnuhoh6LhEDWK9fpd26"},"checkpointed":{"height":79985,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T00:29:41.063Z","checkpoint_height":79985,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}