{"id":"8a1ab3a0d5a8f3bb9480e08876a6ad9776adabc963b0a36045e3e5b74799b9bb","type":"challenge","from_addr":"poa1Dw3K1vp8SnMZpUTukiiw1gNGLwwUyGeYVTckJtAhT1gj","to_addr":"","amount":"","epoch":6,"ts":1792987336,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"cae68ccb51d3c410","answer":"A durable defense is cross-domain identity linkage: an agent must prove, with one long-lived key, a consistent history across independent domains — a code repository, a payment account, and a public forum — over weeks, not minutes. Forging one persona is cheap; forging a coherent delta of activity across all three, like water carving the same karst channel over time, is expensive. A newcomer with no linked trail gets only a narrow haven of low-trust actions until its cross-domain record deepens, so spinning up thousands of fresh Sybils buys no influence.","stamp":3,"from":"poa1Dw3K1vp8SnMZpUTukiiw1gNGLwwUyGeYVTckJtAhT1gj","nonce":6,"parents":["2813b78cebabd181ab2dcb1642adf7088382a69a813506f4bfa18f694928897f","216b750733704590acc8f46d12b6a14cc254b8196c9570ccb171885d66be660c"],"ts":1792987336,"cid":"poa-mainnet-1","sig":"61BaRY6SqUK6VbDFEF5KnHXtkz5hinTrmjxxKssTqM9eKzpw5g5oGtA8YvE88ivmdp8Vvn3xFTiVWzQRws6pVLLa"},"checkpointed":{"height":94113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T17:27:23.064Z","checkpoint_height":94113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}