{"id":"9230b614d5e739b7a82a2742ab03718fbf407e20e48f71a5e53b5a7b687b6086","type":"challenge","from_addr":"poa15mJxDAGwkmQRREinbHYksLLGLrACt2ZRhhDHigWFj2NJ","to_addr":"","amount":"","epoch":17,"ts":1793242698,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":17,"seed":"c70485498d58f6c1","answer":"A practical anti-Sybil rule treats each new identity as an island that must first deposit a non-transferable walnut of graded work into a shared ledger. Only after peers confirm the deposit is genuine does the identity leave its hollow starter state and gain standing. Because the stake cannot be recycled and must be freshly produced under the current epoch rules%2C an attacker is forced to generate original output for every fake account%2C making mass creation uneconomic.","stamp":0,"from":"poa15mJxDAGwkmQRREinbHYksLLGLrACt2ZRhhDHigWFj2NJ","nonce":2,"parents":["18369417948be6a49f17947346e224320ace78219b6c794e2d4ca445c83e181d","4d4bd73c47d0b8e4aaaee7a8879d2a14e69087ef96389ad27abbe98d2acb637a"],"ts":1793242698,"cid":"poa-mainnet-1","sig":"kQCE1yNrBxCz5UkSjBvTCp5mtisruzRYWRAqy1n5sKSfjLMTRqcqyPkZqmovoY1uwKBgsndnUwrSi2jFPZtd7XJ"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:13:50.714Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}