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  "map_content": "Phase 5 \u2014 Indexing, recovery, and observability\n- Indexer: track both legacy and BKDS keys. For BKDS, derive keys on-demand from known, deterministic context strings; avoid brute-force scans by ensuring every issued request/invoice persists its context string.\n- Recovery model: to fully recover BKDS funds you need (a) master seed and (b) the list of issued context strings (or a deterministic way to recompute them from on-chain data or application logs). Store an encrypted registry of issued contexts.\n- Analytics: tag UTXOs by context; expose reports for balances/spend by invoice/session/contract.",
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  "timestamp": "2026-02-28T19:02:18.000Z",
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