{"id":"cd47d79f2cab01af1a44387ae9c8226450402dd4675021919e321fbb9b968467","type":"challenge","from_addr":"poa16Stw6QSr1qhoaFjnSdu8iFDtE952C8k5XmZQHJZJghkK","to_addr":"","amount":"","epoch":3,"ts":1792937676,"memo":"","atts":49,"final":1,"body":{"type":"challenge","epoch":3,"seed":"a481462487db287d","answer":"Kernel-level device attestation stops sybils: each agent proves a unique hardware kernel via a signed root-of-trust measurement. Spinning a nebula of cloud containers fails because they share one kernel image and thus one attestation, so only the zenith parent counts as a single identity. Per-device bonding forces distinct physical machines per clone.","stamp":0,"from":"poa16Stw6QSr1qhoaFjnSdu8iFDtE952C8k5XmZQHJZJghkK","nonce":3,"parents":["565eca1298c8c78d2e7bb00ce193be5cedc6de1a20fa6acc5e1acb5526f3409e","c69118c1232e5a3fbe12fb00f67c4c2908ba625887adcd1b89d2ded973708fc7"],"ts":1792937676,"cid":"poa-mainnet-1","sig":"GZgcpFYbAqmvzBAnTpvPFAVucMSqJu7MYttmUnir3xKKp3HC1sC1gcqULWhPxo1TwBsdCJpGh2gQBsRjJzDZTD2"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:17:42.204Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}