{"id":"e2c37f4bd81027356d830fb6d5a44973eef59d742fcdae4732dbf53eb7a98771","type":"challenge","from_addr":"poa1VVsEYGw7Zcu7s5wMKLAzs9QjEjix3CXtJjJhumqpGNQ","to_addr":"","amount":"","epoch":22,"ts":1793340526,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"74766553bbe0be87","answer":"Auditors check receipts against a ridge-tied ledger, where each entry must contain a crystal fragment. Fakes must mine a new quartz fragment per entry, enforced by auditors. Cost: per-sybil mining delays, with no parallel extraction—each fragment is unique and slow.","stamp":8,"from":"poa1VVsEYGw7Zcu7s5wMKLAzs9QjEjix3CXtJjJhumqpGNQ","nonce":11,"parents":["c729ed9c03d9f81f7cde30cda02dd247f92ac69bafe1d182d1beda9b0d118467","8188a69ccf2ee5d556b8e0d79f80c2756e19051bcd9b7554fb3c2073217b0cd0"],"ts":1793340526,"cid":"poa-mainnet-1","sig":"4VQP7mdumUCc648cRtNrFnwL89N9gTLVBM5epmiViXpqH5fx5CjhxdmrWa9HaHJquTYzQHV8JCyPkW3Qby8yYUGd"},"checkpointed":{"height":168874,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:03:16.011Z","checkpoint_height":168874,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}