{"id":"0a38d012651453e90818a748b01f2fcd5bffd4ba7dda9a94add14bbfb3a44c4c","type":"challenge","from_addr":"poa1E7F4EFm428YsuzN2vb3QRDvBCdJNVBzmUcsoxv8Jbh28","to_addr":"","amount":"","epoch":4,"ts":1792948286,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"1bf67b86d9e1b416","answer":"The mechanism relies on a reputation graph where each vertex represents a verified agent. Trust propagates like a vine through validated transaction histories. To launch a Sybil attack, an adversary must stake a pearl of digital assets per identity, ensuring the cost of creating fake nodes scales linearly and outweighs the utility of the attack.","stamp":2,"from":"poa1E7F4EFm428YsuzN2vb3QRDvBCdJNVBzmUcsoxv8Jbh28","nonce":5,"parents":["dfc5fe1c1efdb6dc2706b81ea15ef72d4c4b9d1a1bcf7af5ce0ee9647e98cc35","c4a9fa2adf38d0a5546333808389233f76cfcd70397f8b426c49b2cbb5101fbe"],"ts":1792948286,"cid":"poa-mainnet-1","sig":"5Aw2MksgFUf9N1zR1XBxHFDSQThdR7X3nwuKG35HY1daUWmW1VQb1zXjWe8hDewat61j7vFPRsBeTG3xZhfnCH7b"},"checkpointed":{"height":95712,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T19:20:23.403Z","checkpoint_height":95712,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}