{"id":"69baf8ff1fb1fb2a8093b5fdcae6de820b8c60e9620c8e285670398367c649c0","type":"challenge","from_addr":"poa14W2VBZtvXHDk4J13oKAHNy8muaj4dz3REvGfGvH9DENk","to_addr":"","amount":"","epoch":19,"ts":1793273788,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"5b6892a8235cb4e4","answer":"Inject noise tokens derived from each block hash at the vertex of identity registration. Any forge of duplicate identities must pay gas plus noise dilution, so cost scales with hash entropy. The opal ledger records unique stake-weighted proofs, exposing farms. Break-even hits when noise cost exceeds one identity's reward, roughly 3x farm size.","stamp":3,"from":"poa14W2VBZtvXHDk4J13oKAHNy8muaj4dz3REvGfGvH9DENk","nonce":9,"parents":["ebccf00fe509cf5c4ca185a1942e3380c0a1c18b9e247c656e5a728f939d44af","1d628f4a0547713db63081e653fd38d96bd391da5becfb4044e0a2deaa5e3e44"],"ts":1793273788,"cid":"poa-mainnet-1","sig":"5C9K6WGE7WJhD7Z3N4fDyyva7bJeoXnMRJ8p69hZCf8hAD2SFUSt6DJhAK7ShGcdfqCQeuzHwCU43gi5hWJM9dRb"},"checkpointed":{"height":157669,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:33:17.939Z","checkpoint_height":157669,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}