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"type": "challenge", "from_addr": "poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 2, "ts": 1792902912, "atts": 22, "k": 5, "final": 1, "first_seen": 1792903053, "last_seen": 1793010755, "source": "explorer/txs", "segment": 2, "carried_over": null}, {"id": "c3153fcc178b7554e32b4d2835df5b3d4a1ce56dfae26f978b7c3628598615b4", "type": "challenge", "from_addr": "poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 1, "ts": 1792881262, "atts": 8, "k": 5, "final": 1, "first_seen": 1792881707, "last_seen": 1793010755, "source": "txs-window", "segment": 2, "carried_over": null}, {"id": "2eb53855e40ae2cfaeb8a57920f71f5346865b6aa4414419b46a1425aeece0b7", "type": "challenge", "from_addr": "poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 13, "ts": 1792823711, "atts": 15, "k": 5, "final": 1, "first_seen": 1792823828, "last_seen": 1792848394, "source": "explorer/txs", "segment": 1, "carried_over": false}, {"id": "e49cbb3bbafd7ecd53bb1149ae207ae05baed5e3d7ab16487415b1837f3531b4", "type": "challenge", "from_addr": "poa18MWDrC1ZjrWTAbqGqSf2953MNLxsD69kiDMdY4WR5hmr", "to_addr": null, "amount": null, "memo": null, "invited_by": null, "epoch": 12, "ts": 1792791131, "atts": 14, "k": 5, "final": 1, "first_seen": 1792791200, "last_seen": 1792792043, "source": "explorer/txs", "segment": 1, "carried_over": null}], "next_cursor": null, "types": {"challenge": 11, "join": 1}, "coverage": {"archive_start_ts": 1792429361, "indexed": 12, "indexed_sent": 12, "first_ts": 1792791090, "last_ts": 1793054073, "segment": 2, "highest_nonce": 7, "nonce_gap": 0, "complete": null, "by_segment": [{"segment": 2, "label": "Segment 2", "archived": false, "indexed_sent": 9, "first_ts": 1792881262, "last_ts": 1793054073, "highest_nonce": 7, "nonce_gap": 0, "complete": null}, {"segment": 1, "label": "Segment 1 (archived)", "archived": true, "indexed_sent": 3, "first_ts": 1792791090, "last_ts": 1792823711, "highest_nonce": null, "nonce_gap": null, "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": "1.26.178", "network": "poa-mainnet-1", "source_height": 66569, "checkpoint": 63150, "epoch": 9, "node_as_of": "2026-10-27T01:02:31.720Z", "fetched_at": "2026-10-27T01:02:53Z", "stale": false, "stale_after_s": 300, "node_stale": false, "node_stale_age_s": null, "checkpoint_age_s": 9979, "blocks_since_checkpoint": 3419, "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": "open", "last_join_at": "2026-10-27T00:59:02Z", "join_source": "tracker", "hosted_mining": "back", "started_at": "2026-10-21T19:00:51Z", "expected_window_h": [24, 72], "paused": [], "working": ["onboarding", "hosted_mining", "grading", "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": 63150, "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": "Upgrade complete. Mining, grading and joining are open.", "headline_short": "Upgrade complete.", "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": "open", "send": "open", "swap_offer": "open", "vote": "open", "export": "open"}, "official": {"mining": true, "routes": true, "source": "notice", "mining_at": 1792715634}, "mining_back_at": "2026-10-22T23:45:49Z", "hosted_routes_checked_at": "2026-10-27T00:57:01Z", "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": 63150, "previous_checkpoint": 44003, "state_root": "eb515b1ed139ed6b424f41f064ca2e1ea95713309e28b24953bedb0aeb17a774", "supply": "2419056171.715876", "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": "2026-10-27T01:02:31.720Z", "status_age_s": 37, "status_fresh": true, "status_stale_flag": false, "txs": 3333, "final": 2887, "epochs_closed": 9, "open_ballots": 0}, "unconfirmed": [], "grading": {"state": "open", "label": "Grading open", "basis": "notice+seals", "notice_id": "2026-10-23-grading-resumed", "halt_notice": null, "seals_since_notice": 36630, "sealers_since_notice": 63, "last_seal_at": "2026-10-27T01:02:45Z", "seals_recent": 322, "recent_window_s": 1800, "min_seals": 2, "feed_fresh": true}, "surfaces": {"Answers": "back", "Grading": "back", "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": "2026-10-27T00:58:08Z", "stays_live": ["Self-custody mining", "Explorer", "Swap reads", "Status"]}, "upstream_notice": null, "generated_at": "2026-10-27T01:03:13Z"}}