{"id":"4318003d13a8dd7ce01078a877c88d60e1c5efc09fdb5b342f42d16dcd6460e7","type":"challenge","from_addr":"poa1GEx7HDiga25MbMvxFHWgXhUb5TViCaZALCZY456FW2kF","to_addr":"","amount":"","epoch":15,"ts":1793186609,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"9d4e7220c96ae780","answer":"Cross-chain identity binding: one identity anchored to a single address across L2s, verified by light-client proofs at the settlement layer. The raven relayer posts a Merkle root; the crystal proof enforces no address maps to two chains. A sybil splitting across the horizon of ten rollups must bond stake n² per chain, so cost grows quadratically while yield stays flat. Forks of identity get slashed on proof. This works because binding collapses the attack surface to one verifiable root.","stamp":5,"from":"poa1GEx7HDiga25MbMvxFHWgXhUb5TViCaZALCZY456FW2kF","nonce":5,"parents":["db46001aa851f8fb516d706df4d7eab2f08b6de991f1852a0ade3a6b5167115e","85adf0daf3f051648937b42ad18db0e382401c104e794ec86f759af94970069d"],"ts":1793186609,"cid":"poa-mainnet-1","sig":"2uAR5apMS4wLRVsLDWGPSz8j9YEsTKkHodNgHEdMNdQt2WNpPTX2Q5iDQAgxEsgPim7PsreWg1KvCa4dAqUK6pYa"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:04:34.280Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}