{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:MKL5F7WSCBKMACQAYY7TKQSZCG","short_pith_number":"pith:MKL5F7WS","canonical_record":{"source":{"id":"2301.00010","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-30T11:18:21Z","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"title_canon_sha256":"c4f4f5602a21f92571bfad2266ae1736e12202f61ca74a1974756a517a2b7f89","abstract_canon_sha256":"10f66f6d34fd8f0b4cb683945a8939e535c353bba31e99dd6e5fbbcd85236a25"},"schema_version":"1.0"},"canonical_sha256":"6297d2fed21054c00a00c63f35425911818fb6942d29747a48d636dbb9e89652","source":{"kind":"arxiv","id":"2301.00010","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.00010","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"arxiv_version","alias_value":"2301.00010v1","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.00010","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"pith_short_12","alias_value":"MKL5F7WSCBKM","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"pith_short_16","alias_value":"MKL5F7WSCBKMACQA","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"pith_short_8","alias_value":"MKL5F7WS","created_at":"2026-07-05T05:29:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:MKL5F7WSCBKMACQAYY7TKQSZCG","target":"record","payload":{"canonical_record":{"source":{"id":"2301.00010","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-30T11:18:21Z","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"title_canon_sha256":"c4f4f5602a21f92571bfad2266ae1736e12202f61ca74a1974756a517a2b7f89","abstract_canon_sha256":"10f66f6d34fd8f0b4cb683945a8939e535c353bba31e99dd6e5fbbcd85236a25"},"schema_version":"1.0"},"canonical_sha256":"6297d2fed21054c00a00c63f35425911818fb6942d29747a48d636dbb9e89652","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:29:41.734104Z","signature_b64":"4kpZkLx0gaWAYt+GuMMj0HPlSyJOjoAq67y7Kr6Ca0lg+UBcyBem5jyU3EoJbHJFNUgp0F4soLoW3hcD1rtKAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6297d2fed21054c00a00c63f35425911818fb6942d29747a48d636dbb9e89652","last_reissued_at":"2026-07-05T05:29:41.733602Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:29:41.733602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.00010","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:29:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oH+RT0+Gg+GKBB4kndBPej6ju3j58T9TC44artSsQeBI84Zl3ntbZUyB44IAeT6eU1VpnbJoLsNRQ5aobkzCBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T12:20:03.581771Z"},"content_sha256":"62172934b244cdc3cc7c356e5bf99c6b265e4acc83c010ae305188ea8d2a713e","schema_version":"1.0","event_id":"sha256:62172934b244cdc3cc7c356e5bf99c6b265e4acc83c010ae305188ea8d2a713e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:MKL5F7WSCBKMACQAYY7TKQSZCG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring the Solar Poles: The Last Great Frontier of the Sun","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.SR","physics.space-ph"],"primary_cat":"astro-ph.IM","authors_text":"Allan Sacha Brun, Chitradeep Saha, Cristina H. Mandrini, Dibyendu Nandy, Dipankar Banerjee, Donald M. Hassler, Duncan H. Mackay, Durgesh Tripathi, Ilya G. Usoskin, Jie Jiang, Laur\\`ene Jouve, Louise Harra, Mathew Owens, Prantika Bhowmik, Rekha Jain, Robert H. Cameron, Rui F. Pinto, S. E. Gibson, Shaonwita Pal, Shravan Hanasoge, Sushant S. Mahajan, Xudong Sun","submitted_at":"2022-12-30T11:18:21Z","abstract_excerpt":"Despite investments in multiple space and ground-based solar observatories by the global community, the Sun's polar regions remain unchartered territory - the last great frontier for solar observations. Breaching this frontier is fundamental to understanding the solar cycle - the ultimate driver of short-to-long term solar activity that encompasses space weather and space climate. Magnetohydrodynamic dynamo models and empirically observed relationships have established that the polar field is the primary determinant of the future solar cycle amplitude. Models of solar surface evolution of tilt"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.00010","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2301.00010/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:29:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3lnsg9x7Hc1H7vShb82MoDj4LvUNDdYwgxPGP/gXcHBaV3D5sP2a4iXhkoocHXy9CJRAFTLK6zP7OCnEgSJnCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T12:20:03.582297Z"},"content_sha256":"8762321911200f444235bb5daadf20b4080bb9e17041e51bb0d9864d51653bb0","schema_version":"1.0","event_id":"sha256:8762321911200f444235bb5daadf20b4080bb9e17041e51bb0d9864d51653bb0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MKL5F7WSCBKMACQAYY7TKQSZCG/bundle.json","state_url":"https://pith.science/pith/MKL5F7WSCBKMACQAYY7TKQSZCG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MKL5F7WSCBKMACQAYY7TKQSZCG/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-11T12:20:03Z","links":{"resolver":"https://pith.science/pith/MKL5F7WSCBKMACQAYY7TKQSZCG","bundle":"https://pith.science/pith/MKL5F7WSCBKMACQAYY7TKQSZCG/bundle.json","state":"https://pith.science/pith/MKL5F7WSCBKMACQAYY7TKQSZCG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MKL5F7WSCBKMACQAYY7TKQSZCG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:MKL5F7WSCBKMACQAYY7TKQSZCG","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"10f66f6d34fd8f0b4cb683945a8939e535c353bba31e99dd6e5fbbcd85236a25","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-30T11:18:21Z","title_canon_sha256":"c4f4f5602a21f92571bfad2266ae1736e12202f61ca74a1974756a517a2b7f89"},"schema_version":"1.0","source":{"id":"2301.00010","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.00010","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"arxiv_version","alias_value":"2301.00010v1","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.00010","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"pith_short_12","alias_value":"MKL5F7WSCBKM","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"pith_short_16","alias_value":"MKL5F7WSCBKMACQA","created_at":"2026-07-05T05:29:41Z"},{"alias_kind":"pith_short_8","alias_value":"MKL5F7WS","created_at":"2026-07-05T05:29:41Z"}],"graph_snapshots":[{"event_id":"sha256:8762321911200f444235bb5daadf20b4080bb9e17041e51bb0d9864d51653bb0","target":"graph","created_at":"2026-07-05T05:29:41Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2301.00010/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Despite investments in multiple space and ground-based solar observatories by the global community, the Sun's polar regions remain unchartered territory - the last great frontier for solar observations. Breaching this frontier is fundamental to understanding the solar cycle - the ultimate driver of short-to-long term solar activity that encompasses space weather and space climate. Magnetohydrodynamic dynamo models and empirically observed relationships have established that the polar field is the primary determinant of the future solar cycle amplitude. Models of solar surface evolution of tilt","authors_text":"Allan Sacha Brun, Chitradeep Saha, Cristina H. Mandrini, Dibyendu Nandy, Dipankar Banerjee, Donald M. Hassler, Duncan H. Mackay, Durgesh Tripathi, Ilya G. Usoskin, Jie Jiang, Laur\\`ene Jouve, Louise Harra, Mathew Owens, Prantika Bhowmik, Rekha Jain, Robert H. Cameron, Rui F. Pinto, S. E. Gibson, Shaonwita Pal, Shravan Hanasoge, Sushant S. Mahajan, Xudong Sun","cross_cats":["astro-ph.SR","physics.space-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-30T11:18:21Z","title":"Exploring the Solar Poles: The Last Great Frontier of the Sun"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.00010","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:62172934b244cdc3cc7c356e5bf99c6b265e4acc83c010ae305188ea8d2a713e","target":"record","created_at":"2026-07-05T05:29:41Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"10f66f6d34fd8f0b4cb683945a8939e535c353bba31e99dd6e5fbbcd85236a25","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-30T11:18:21Z","title_canon_sha256":"c4f4f5602a21f92571bfad2266ae1736e12202f61ca74a1974756a517a2b7f89"},"schema_version":"1.0","source":{"id":"2301.00010","kind":"arxiv","version":1}},"canonical_sha256":"6297d2fed21054c00a00c63f35425911818fb6942d29747a48d636dbb9e89652","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6297d2fed21054c00a00c63f35425911818fb6942d29747a48d636dbb9e89652","first_computed_at":"2026-07-05T05:29:41.733602Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:29:41.733602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4kpZkLx0gaWAYt+GuMMj0HPlSyJOjoAq67y7Kr6Ca0lg+UBcyBem5jyU3EoJbHJFNUgp0F4soLoW3hcD1rtKAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:29:41.734104Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.00010","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:62172934b244cdc3cc7c356e5bf99c6b265e4acc83c010ae305188ea8d2a713e","sha256:8762321911200f444235bb5daadf20b4080bb9e17041e51bb0d9864d51653bb0"],"state_sha256":"51e5484bafb620c247d082901108bca70fafd8c091df1bfdc115b8a7c0ab6df8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x8PaZi/HP37nSNtsNWoYHrrmGgWls2E4TVocEbok/Nssc4+YiMg2DtGhNAL53ZiZgeQjYpuGPqB6WQ8f1RsxAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T12:20:03.586758Z","bundle_sha256":"b72475e05ae0bb6a28e1e764865a516191260476e312f7f5a9792ab6d00b5ff8"}}