{"id":"2774938523775262489f7e2a59c6a5df8f8798566e24ba84a391d91351361fe8","type":"challenge","from_addr":"poa1BwWDid4xMxTUMcQXbC6VERaWRPbeJ4Jahp6NeSzDnEQE","to_addr":"","amount":"","epoch":15,"ts":1793187190,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"2ff8291d8a6d2f58","answer":"Semantic-similarity clustering at the basalt: submissions whose embeddings converge beyond 0.92 are flagged as one operator, and paired validators must mutually slash 30% stake on mismatch. The umber score quantifies fingerprint overlap across epochs, so a farmer splitting into n personas bleeds stake each round. Doubling identities quadruples slash exposure while rewards stay flat; the knoll of profitability is crossed near five accounts, where expected loss exceeds $400 per epoch. The mechanism works because faking diversity costs more than honest participation yields.","stamp":0,"from":"poa1BwWDid4xMxTUMcQXbC6VERaWRPbeJ4Jahp6NeSzDnEQE","nonce":5,"parents":["c9b9e12e274a50d0f7c542bb088a761fef1ac92bc30e7d5565bfb822de595544","4ee7adf2855a9948bca4714d78a5b94f2d2cec4230c1d1a18dd6ce7a077a7957"],"ts":1793187190,"cid":"poa-mainnet-1","sig":"5gJJkdF5LMb6WC2ZJq8TPhLspKfJDKVTw6ejv7QpXPivbLxyVCgiTWRfguc3ePdDKDy6UwTXXsy49KY7VW3j3p9r"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T02:40:41.989Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}