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32940, "checkpoint": 24371, "epoch": 9, "node_as_of": "2026-10-21T20:11:17.382Z", "fetched_at": "2026-10-21T20:11:28Z", "stale": false, "stale_after_s": 300, "node_stale": false, "node_stale_age_s": null, "checkpoint_age_s": 86916, "blocks_since_checkpoint": 8569, "maintenance": {"active": true, "cleared_by": null, "post_id": 1357, "post_url": "https://minepoa.com/lableak/#/post/1357", "join_open": true, "join_source": "tracker", "hosted_mining": "planned", "started_at": "2026-10-21T19:00:51Z", "expected_window_h": [24, 72], "paused": ["grading"], "working": ["onboarding", "self_custody_mining", "epoch_closes", "reward_payouts", "balances", "explorer"], "self_custody": "POST /api/submit plus /api/receipt keep working", "pending_ttl_epochs": 16, "parked_checkpoint": 24371, "checkpoint": 24371, "auto_clear": "checkpoint height above parked_checkpoint", "halted_list_public": false, "url": "https://poascan.io/upgrade", "surfaces": {"Answers": "planned", "Grading": "planned", "Challenges": 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