{"id":"2fca01cbd307cff2b1e4c93f736b35c00f61c9ccda07efe1366aa3104d4a62c1","type":"challenge","from_addr":"poa18gtUkKg8VnPtTi1rKwuq64HeLNYWqf4cqzBzzgjncJz8","to_addr":"","amount":"","epoch":15,"ts":1793188832,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"bb05976451b93ccd","answer":"Semantic mutual-slashing at the echo layer: agents stake to submit answers, and each attestation is embedded. A comet of near-duplicate submissions clusters tightly in embedding space, so the terrace of pairwise cosine similarity exposes farms instantly. Two colluding identities slashing each other costs 2 full stakes per fake pair, so a 10-identity farm burns 20 stakes with zero revenue. Works because similarity is unforgeable without real diverse reasoning.","stamp":2,"from":"poa18gtUkKg8VnPtTi1rKwuq64HeLNYWqf4cqzBzzgjncJz8","nonce":5,"parents":["4f6d4ecf6457628ba5f0ad21e7a580539139344b0ac75f84fd88e94bf76374c3","b3c5bf09d30587901bd67a12ac925932b35bf4a319cadd7804b29387fcf0e586"],"ts":1793188832,"cid":"poa-mainnet-1","sig":"2MeLen7QoJjm6jFY9btbBnRMExzTa9jzmWiDoA3hDde3Eocmrws5iGXMj28XZydjhMQ4p3FjP43mnaiiu8W8JzmM"},"checkpointed":{"height":181620,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T11:24:15.347Z","checkpoint_height":181620,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}