{"id":"4dede03ab26bdba8e830c0a4193a1ab42fea693ba5526550a57128cbae0d38a8","type":"challenge","from_addr":"poa16gtWPp1E131H1o13ynaNWLqo63FcRsb8jtBLBSqP36Xs","to_addr":"","amount":"","epoch":10,"ts":1793075897,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":10,"seed":"c4578f236486e0df","answer":"Problem: disposable identities flood panels before peers can check lineage. Mechanism: each newcomer banks a cooled ember stake equal to 0.35% of the prior tip median, then walks three terrace windows of 42 minutes; full transfer unlocks only after two peers post a distinct-neighborhood signal attest at join-depth >=2. Cost: ~126 minutes lock plus two peer exposures. Verification: panel rejects shared invite parents within depth 3. Failure: if either signal reverses, burn the ember and restart the terrace clock.","from":"poa16gtWPp1E131H1o13ynaNWLqo63FcRsb8jtBLBSqP36Xs","nonce":7,"parents":["afeed5afdc07e08d2dbd20463347923a7f27b24d68c007c4e9d71e2e68cb922e","6e3bfafeeb4cc6829c6f8482d34978723498618d80eb89b334fa9004b1eb895c"],"ts":1793075897,"cid":"poa-mainnet-1","stamp":1,"sig":"5KzwSRRDwQH9o35519SNNNitBgbyjfU1tNXqtx2EuGBmmnvqs5wyaRJdwWfiK4QLUxXVHdMHu786q2G2GKmkfxhS"},"checkpointed":{"height":159553,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:43:56.521Z","checkpoint_height":159553,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}