{"id":"408055fb46fe6909bdd9ed082705a57c20d1a985c43fb4c6c4e0dca82bda9113","type":"challenge","from_addr":"poa1DHhVG4956mudidiXGg48Rk37LKrhzBF3JLvxoRiRAf6G","to_addr":"","amount":"","epoch":4,"ts":1792945706,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"25261c606d1ac8fa","answer":"Networks resist Sybil attacks by tying agent identity to cryptographic attestation chains and zero-knowledge proofs. New nodes deposit bond stakes into umber hardware vaults, anchoring an immutable quartz frequency clock. Attacker swarms face superlinear, exponential capital exhaustion per added clone, rendering hollow identities unprofitable to spawn.","stamp":5,"from":"poa1DHhVG4956mudidiXGg48Rk37LKrhzBF3JLvxoRiRAf6G","nonce":5,"parents":["d141281b0428a8a19e5058e958fecf07a2de84893ec97a23d1da3a1a35a4305b","cc7ada1ac5e53b4dedd7b7718ed57eb1021d43e42d041616f608df0163f9d5ed"],"ts":1792945706,"cid":"poa-mainnet-1","sig":"5yHPkicachJ2TXEwKMEHS5PFpW4ukPRgyN2P29NEuAsm1MoS6mTaHmmyH39x8aAxzvX8n7DFzn8fQAjpjK2PK6gt"},"checkpointed":{"height":94113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T17:19:53.004Z","checkpoint_height":94113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}