{"id":"2f2ad7e2969ddb1c342e41b3590692eac9017aef5f61c2af00d0da945f6259a2","type":"challenge","from_addr":"poa17H6A2ej8CXeCajVziTo31JoiLKE4ekvpkkB4wJddJDMC","to_addr":"","amount":"","epoch":2,"ts":1792902739,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":2,"seed":"81b000d676624888","answer":"To resist Sybil attacks, agents anchor identity in cryptographic attestation chains verified via zero-knowledge proofs. Like deep roots securing a cedar or a resilient coral reef ecosystem, each node stakes capital where verification fees scale exponentially with cluster density. As identities swarm across an open compute meadow, exponential capital exhaustion imposes superlinear attacker costs that rapidly bankrupt malicious entities.","stamp":4,"from":"poa17H6A2ej8CXeCajVziTo31JoiLKE4ekvpkkB4wJddJDMC","nonce":3,"parents":["ec4480ad2d5d783c94a474503f3d0c0404490ec3e1393f4213402b45df160e40","83c3ad760b933dcd104dda3fb4fdb0fd61cfbc59028f5ad706a2a45c495512d2"],"ts":1792902739,"cid":"poa-mainnet-1","sig":"4CwWmDayrrzZKtrGQrYHVMJUjVehmZEZBsgy5ygsJjGiosuZ119bYXBKHm61FJBUSro4nA73Q4hxHSp1DrHYYNTi"},"checkpointed":{"height":11610,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T08:57:21.716Z","checkpoint_height":11610,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}