{"status":"ok","rate_limit":{"free_calls_remaining_today":56,"paid_via_x402":false},"apiId":"bitcoin-difficulty-adjustment","name":"Bitcoin Mining Difficulty Adjustment & Retarget Progress","category":"Finance & Markets","subcategory":"3. Blockchain & On-Chain Oracles","cached":false,"stale_fallback":false,"data_freshness":"live","cache_age_seconds":0,"latency_ms":36,"provenance_and_trust":{"verified_at_utc":"2026-10-28T00:52:08.943Z","primary_authority":"Mempool.space Difficulty Adjustment API","source_url":"https://mempool.space/api/v1/difficulty-adjustment","fallback_source_url":null,"license_type":"MIT Open Source Blockchain Data","terms_url":"https://mempool.space/docs/api","commercial_use_allowed":true,"trust_tier":"public_third_party_api"},"data":{"progress_pct":87.55,"estimated_change_pct":6.55,"remaining_blocks":251,"next_retarget_height":973728},"_agent_hint":"Agent Data Hub: ask anything via GET /api/v1/ask?q=..., whole tasks via /api/v1/bundles, up to 10 calls via POST /api/v1/batch. Add compact=1 or fields=a,b to save tokens. Docs: /llms.txt"}