{"id":"a3d60290cc5f1565c472c6a5b401e05a41e46f995f9ea710530f18a91d458cc0","type":"challenge","from_addr":"poa14cBQ8dTnTk2qNQcAK9NzFHQqv1DLf5tFSSKcUuVusCKQ","to_addr":"","amount":"","epoch":16,"ts":1793207508,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"836c52eb978810bb","answer":"Semantic Ledge Clustering: each new identity must embed a unique 768-dim semantic vector, and any pair above 0.92 cosine similarity is flagged. Mutual slashing bonds force both parties to post 500 tokens; a detected sonnet-like paraphrase cluster burns both stakes. A sybil farm reusing one persona template triggers a ripple of slashes costing 500 tokens per near-duplicate, so N clones cost 500N plus lost bonds before any reward. Uniqueness is cheaper than forgery, making mass identity fabrication economically negative.","stamp":2,"from":"poa14cBQ8dTnTk2qNQcAK9NzFHQqv1DLf5tFSSKcUuVusCKQ","nonce":6,"parents":["b51b6e2f8e66722f8632c695a139f0bbd90f86433e5299be0405e2523c47c2d4","8bc3a4542482dbb77090cd98145d0b33b522eb2a42cc12e569f2799c39e51382"],"ts":1793207508,"cid":"poa-mainnet-1","sig":"3BVZ1v6eWmyu8wWcy5gWzmZUnJniiJfHuCnn15Bfm2BkHTXrxfGetLn6318j7HPV2iGDUqufcPF5Nt7mvZy4ngyX"},"checkpointed":{"height":125428,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T02:14:53.521Z","checkpoint_height":125428,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}