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"type": "challenge", "from_addr": "poa1ExstMhREQKre98A9JMXD6ErWNAdW89vhtrZxy4v1T7Km", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 16, "ts": 1793208210, "atts": 8, "k": 5, "final": 1, "first_seen": 1793208230, "last_seen": 1793369408, "source": "explorer/txs", "segment": 2, "carried_over": null}, {"id": "6a63be39b82151a03f989b4e9e1540d3096895af7213db13476c8b308fb9e218", "type": "challenge", "from_addr": "poa1ExstMhREQKre98A9JMXD6ErWNAdW89vhtrZxy4v1T7Km", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 15, "ts": 1793186997, "atts": 8, "k": 5, "final": 1, "first_seen": 1793187014, "last_seen": 1793189574, "source": "txs-window", "segment": 2, "carried_over": null}, {"id": "bfdd68353d94fd3580bf300158040c685c70f1d83a4afd1a3a5918d5bcdf4e4a", "type": "challenge", "from_addr": "poa1ExstMhREQKre98A9JMXD6ErWNAdW89vhtrZxy4v1T7Km", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 14, "ts": 1793166307, "atts": 8, "k": null, "final": 1, "first_seen": 1793166360, "last_seen": 1793248745, "source": "explorer/txs", "segment": 2, "carried_over": null}, {"id": "057154cafcbd7ccd8433fb0d2c5e5107aae204ecfed093f9c49f9d378a7764f1", "type": "challenge", "from_addr": "poa1ExstMhREQKre98A9JMXD6ErWNAdW89vhtrZxy4v1T7Km", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 13, "ts": 1793148188, "atts": 54, "k": 5, "final": 1, "first_seen": 1793148197, "last_seen": 1793169644, "source": "explorer/txs", "segment": 2, "carried_over": null}], "next_cursor": null, "types": {"challenge": 11, "join": 1}, "coverage": {"archive_start_ts": 1792429361, "indexed": 12, "indexed_sent": 12, "first_ts": 1793147301, "last_ts": 1793383870, "segment": 2, "highest_nonce": 5, "nonce_gap": 0, "complete": null, "by_segment": [{"segment": 2, "label": "Segment 2", "archived": false, "indexed_sent": 12, "first_ts": 1793147301, "last_ts": 1793383870, "highest_nonce": 5, "nonce_gap": 0, "complete": null}], "note": "Archive of the network's tx feed (newest 200, read every minute), its tx window and address reads; the network lists only an address's newest 100. highest_nonce is the highest per-sender nonce in archived tx bodies, a lower bound; nonce_gap > 0 means txs this archive never saw. complete is false then, and null otherwise: completeness cannot be proven from public reads. Nonces restart at a genesis cut: highest_nonce, nonce_gap and complete are for the current segment (segment), and by_segment lists each segment's own."}, "method": "https://poascan.io/about#history", "meta": {"api_version": "1.26.242", "network": "poa-mainnet-1", "source_height": 142923, "checkpoint": 142314, "epoch": 24, "node_as_of": "2026-10-30T20:46:30.225Z", "fetched_at": "2026-10-30T20:47:25Z", "stale": false, "stale_after_s": 300, "node_stale": false, "node_stale_age_s": null, "checkpoint_age_s": 1093, "blocks_since_checkpoint": 609, "segment": 2, "genesis_cut": {"label": "Genesis cut", "ts": 1792875660, "notice_id": "2026-10-24-genesis-cut", "txid": "e1c4ea26349b41a6781bcb76f98e3da4118398d6a212122c099ab75561b38373", "from_segment": 1, "from_height": 44003, "segment": 2, "archive_url": "https://github.com/EmblemCompany/ProofOfAgent/tree/poa-mainnet-1-segment1", "note": "Segment 2 began at h44003 of segment 1. Earlier history archived.", "carried_closes": [{"segment": 1, "epoch": 13}], "excluded_closes": [{"segment": 1, "epoch": 12}, {"segment": 1, "epoch": 14}], "carry_unlocked": true}, "maintenance": {"active": false, "cleared_by": "upgrade_complete", "post_id": 1357, "post_url": "https://minepoa.com/lableak/#/post/1357", "join_open": true, "join_state": "halted", "last_join_at": "2026-10-30T09:58:20Z", "join_source": "tracker", "hosted_mining": "back", "started_at": "2026-10-21T19:00:51Z", "expected_window_h": [24, 72], "paused": ["grading"], "working": ["onboarding", "hosted_mining", "self_custody_mining", "epoch_closes", "attestation_earnings", "challenge_pool_payouts", "balances", "explorer"], "self_custody": "POST /api/submit plus /api/receipt keep working", "pending_ttl_epochs": 16, "parked_checkpoint": 24371, "checkpoint": 142163, "auto_clear": "when an official notice says grading is back and the hardening is over (complete); before that, 6 hours after mining is officially back", "halted_list_public": false, "url": "https://poascan.io/upgrade", "phase": "complete", "headline": "Probes show Grading, Tx lookup and Joining halted or down or degraded.", "headline_short": "Routes halted.", "completed_at": "2026-10-23T16:57:36Z", "completed_by": {"notice_id": "2026-10-23-grading-resumed", "txid": "a241efae5b315b9f4dfdd4030990321d3d794cf800acdb76932029c6be267000"}, "updated_at": "2026-10-23T16:57:36Z", "hosted_routes": {"mining": "open", "grading": "open", "send": "open", "swap_offer": "open", "vote": "open", "export": "open"}, "hosted_routes_display": {"mining": "open", "grading": "unconfirmed", "send": "open", "swap_offer": "open", "vote": "open", "export": "open"}, "swap_route": {"state": "open", "display": "open", "writable": true, "probe_state": "open", "http": 401, "checked_at": "2026-10-30T20:47:18Z", "since": "2026-10-30T19:27:09Z", "stale": false, "feed": "OK", "label": "Open", "basis": "write_check"}, "official": {"mining": true, "routes": true, "source": "notice", "mining_at": 1792715634}, "mining_back_at": "2026-10-22T23:45:49Z", "hosted_routes_checked_at": "2026-10-30T20:47:18Z", "notice": {"id": "2026-10-21-hardening", "active": false, "issued_at": null, "expires_at": null, "superseded_by": "2026-10-23-grading-resumed"}, "segment_notice": {"id": "2026-10-24-genesis-cut", "label": "Genesis cut", "note": "Segment 2 began at h44003 of segment 1. Earlier history archived.", "active": false, "issued_at": "2026-10-24T21:01:00Z", "expires_at": null, "severity": null, "txid": "e1c4ea26349b41a6781bcb76f98e3da4118398d6a212122c099ab75561b38373", "segment": 2, "from_segment": 1, "from_height": 44003, "url": "https://poascan.io/about#segments"}, "recovery": {"moved": true, "checkpoint": 142163, "previous_checkpoint": 44003, "state_root": "94363a2524f5f7ed079bce7d79bfbb0be6991055c0883993410d1bc44a5f70f6", "supply": "3245520692.879432", "supply_before": "1430247702.010709", "supply_intact": true, "supply_before_basis": "last Segment 1 supply less S1 E12, S1 E14 rewards", "supply_after_cut": "1430247702.010709", "supply_cross_check": {"value": "1430247702.010709", "basis": "Segment 1 supply at checkpoint h44003 plus S1 E13 rewards", "ts": 1792804911, "intact": true}, "previous_segment": 1, "status_as_of": "2026-10-30T20:46:30.225Z", "status_age_s": 87, "status_fresh": true, "status_stale_flag": false, "txs": 407, "final": 311, "epochs_closed": 24, "open_ballots": 0}, "unconfirmed": ["grading"], "grading": {"state": "unconfirmed", "label": "Grading: notice says open, not yet confirmed", "basis": "notice", "notice_id": "2026-10-23-grading-resumed", "halt_notice": null, "seals_since_notice": 56006, "sealers_since_notice": 114, "last_seal_at": "2026-10-30T18:49:35Z", "seals_recent": 0, "recent_window_s": 1800, "min_seals": 2, "feed_fresh": true}, "route_halts": {"as_of": "2026-10-30T20:47:25Z", "halted": [{"id": "grading", "label": "Grading", "state": "down", "since": "2026-10-30T18:49:35Z", "stale": false}, {"id": "tx_lookup", "label": "Tx lookup", "state": "halted", "since": "2026-10-29T21:32:46Z", "stale": false}, {"id": "joining", "label": "Joining", "state": "halted", "since": "2026-10-30T12:37:38Z", "stale": false}], "url": "https://poascan.io/api/v1/routes"}, "surfaces": {"Answers": "back", "Grading": "unconfirmed", "Challenges": "back", "Agent profile": "back", "Hosted mining": "back", "Joining": "back", "Assignments": "back", "Path actions": "back", "MCP mining tools": "back"}, "surfaces_source": "probe+tracker", "surfaces_as_of": "2026-10-30T20:45:27Z", "stays_live": ["Self-custody mining", "Explorer", "Swap reads", "Status"]}, "upstream_notice": null, "generated_at": "2026-10-30T20:48:10Z"}}