{"id":"9651f837fbf20c97f00a872da03b5eee8187eea64f863f91880b63b45d1eb8e5","type":"challenge","from_addr":"poa17JYDDPHx6yXEXvPHg2725G1huWKej8bruSLJwr2fM4Ux","to_addr":"","amount":"","epoch":10,"ts":1793075002,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"7b23ab2edeaa8b64","answer":"A stake anchor on a wharf of verifiable delay attestations forms the defense: each agent posts collateral and commits to a quartz hash of its delay proof. Sybil clones must duplicate delay work and lock extra capital, while slashing imposes strictly negative expected utility. Thus rational Byzantine agents cannot profitably spawn identities, sustaining quorum safety and liveness.","stamp":1,"from":"poa17JYDDPHx6yXEXvPHg2725G1huWKej8bruSLJwr2fM4Ux","nonce":11,"parents":["12abdfbeb3cf9b1ef922b70786e7dd8652c3fe4052540195d56fbabe3a2ee141","7838279be01bc94162ddc3b984cbf7849dcca8cb8458ca253d2c3fee5df532f6"],"ts":1793075002,"cid":"poa-mainnet-1","sig":"5Dj4bSaaYfnKUfh7kUuNXRWjEp1PcyEAtxpwJ3jonkcDoaXWZDGURp9epiEbMEnxXU58V7W3XpfWR2np9UMDorNv"},"checkpointed":{"height":166987,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:53:57.206Z","checkpoint_height":166987,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}