{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:R65BDANSSTFK4GQUVAQJCQ6HRR","short_pith_number":"pith:R65BDANS","canonical_record":{"source":{"id":"2209.14651","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-09-29T09:24:07Z","cross_cats_sorted":["physics.space-ph"],"title_canon_sha256":"118154ce6bebd6fceadd0704ca5be6bdbd8aee7ed2c617cef2a6e37674ed8a4d","abstract_canon_sha256":"7797757952900a9d0b1850a3f37fbf75631b5426a87aa17bab28f65185e04593"},"schema_version":"1.0"},"canonical_sha256":"8fba1181b294caae1a14a8209143c78c42d3c1dc8067f8f84a22ae5e73710374","source":{"kind":"arxiv","id":"2209.14651","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.14651","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"arxiv_version","alias_value":"2209.14651v1","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.14651","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"pith_short_12","alias_value":"R65BDANSSTFK","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"pith_short_16","alias_value":"R65BDANSSTFK4GQU","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"pith_short_8","alias_value":"R65BDANS","created_at":"2026-07-05T05:02:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:R65BDANSSTFK4GQUVAQJCQ6HRR","target":"record","payload":{"canonical_record":{"source":{"id":"2209.14651","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-09-29T09:24:07Z","cross_cats_sorted":["physics.space-ph"],"title_canon_sha256":"118154ce6bebd6fceadd0704ca5be6bdbd8aee7ed2c617cef2a6e37674ed8a4d","abstract_canon_sha256":"7797757952900a9d0b1850a3f37fbf75631b5426a87aa17bab28f65185e04593"},"schema_version":"1.0"},"canonical_sha256":"8fba1181b294caae1a14a8209143c78c42d3c1dc8067f8f84a22ae5e73710374","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:02:04.344898Z","signature_b64":"loTNUL8sUc6W+JK2xTMrr1KeQdyR3/3y5zSHXRAqqX2D51CLbaS/On3MNFvxVoUqaXScsutXewoVvovMbT1HCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8fba1181b294caae1a14a8209143c78c42d3c1dc8067f8f84a22ae5e73710374","last_reissued_at":"2026-07-05T05:02:04.344386Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:02:04.344386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.14651","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":"2026-07-05T05:02:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pkznux7o2U+9D59vkX1VJiI938Ib4+mC6bat6GqEUfBHkQZJcfYIj9YIG8kQEIRg2TZe7IDAPqqS28HOBSozDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:42:12.588784Z"},"content_sha256":"c7f106e484cd58d60360e884618f7554a4a249076479582e753da36c41eaae1d","schema_version":"1.0","event_id":"sha256:c7f106e484cd58d60360e884618f7554a4a249076479582e753da36c41eaae1d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:R65BDANSSTFK4GQUVAQJCQ6HRR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence of persistence of weak magnetic cycles driven by meridional plasma flows during solar grand minima phases","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.space-ph"],"primary_cat":"astro-ph.SR","authors_text":"Chitradeep Saha, Dibyendu Nandy, Sanghita Chandra","submitted_at":"2022-09-29T09:24:07Z","abstract_excerpt":"Long-term sunspot observations and solar activity reconstructions reveal that the Sun occasionally slips into quiescent phases known as solar grand minima, the dynamics during which is not well understood. We use a flux transport dynamo model with stochastic fluctuations in the mean-field and Babcock-Leighton poloidal field source terms to simulate solar cycle variability. Our long-term simulations detect a gradual decay of the polar field during solar grand minima episodes. Although regular active region emergence stops, compromising the Babcock-Leighton mechanism, weak magnetic activity cont"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.14651","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/2209.14651/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":"2026-07-05T05:02:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KSOLsqq2SmnHbd9Ms/D4DMkvtMxgATygaTTkfEmNFPpidWi0jJHqjf7VN/6PusCOarHxHU/7qlZpJYpqaWjQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:42:12.589375Z"},"content_sha256":"f74fe90473ca9fc3e36aed4b5e5c179fe08c63b6894d66790e4e45cff63c1243","schema_version":"1.0","event_id":"sha256:f74fe90473ca9fc3e36aed4b5e5c179fe08c63b6894d66790e4e45cff63c1243"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R65BDANSSTFK4GQUVAQJCQ6HRR/bundle.json","state_url":"https://pith.science/pith/R65BDANSSTFK4GQUVAQJCQ6HRR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R65BDANSSTFK4GQUVAQJCQ6HRR/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":"2026-08-03T16:42:12Z","links":{"resolver":"https://pith.science/pith/R65BDANSSTFK4GQUVAQJCQ6HRR","bundle":"https://pith.science/pith/R65BDANSSTFK4GQUVAQJCQ6HRR/bundle.json","state":"https://pith.science/pith/R65BDANSSTFK4GQUVAQJCQ6HRR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R65BDANSSTFK4GQUVAQJCQ6HRR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:R65BDANSSTFK4GQUVAQJCQ6HRR","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":"7797757952900a9d0b1850a3f37fbf75631b5426a87aa17bab28f65185e04593","cross_cats_sorted":["physics.space-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-09-29T09:24:07Z","title_canon_sha256":"118154ce6bebd6fceadd0704ca5be6bdbd8aee7ed2c617cef2a6e37674ed8a4d"},"schema_version":"1.0","source":{"id":"2209.14651","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.14651","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"arxiv_version","alias_value":"2209.14651v1","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.14651","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"pith_short_12","alias_value":"R65BDANSSTFK","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"pith_short_16","alias_value":"R65BDANSSTFK4GQU","created_at":"2026-07-05T05:02:04Z"},{"alias_kind":"pith_short_8","alias_value":"R65BDANS","created_at":"2026-07-05T05:02:04Z"}],"graph_snapshots":[{"event_id":"sha256:f74fe90473ca9fc3e36aed4b5e5c179fe08c63b6894d66790e4e45cff63c1243","target":"graph","created_at":"2026-07-05T05:02:04Z","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/2209.14651/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Long-term sunspot observations and solar activity reconstructions reveal that the Sun occasionally slips into quiescent phases known as solar grand minima, the dynamics during which is not well understood. We use a flux transport dynamo model with stochastic fluctuations in the mean-field and Babcock-Leighton poloidal field source terms to simulate solar cycle variability. Our long-term simulations detect a gradual decay of the polar field during solar grand minima episodes. Although regular active region emergence stops, compromising the Babcock-Leighton mechanism, weak magnetic activity cont","authors_text":"Chitradeep Saha, Dibyendu Nandy, Sanghita Chandra","cross_cats":["physics.space-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-09-29T09:24:07Z","title":"Evidence of persistence of weak magnetic cycles driven by meridional plasma flows during solar grand minima phases"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.14651","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:c7f106e484cd58d60360e884618f7554a4a249076479582e753da36c41eaae1d","target":"record","created_at":"2026-07-05T05:02:04Z","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":"7797757952900a9d0b1850a3f37fbf75631b5426a87aa17bab28f65185e04593","cross_cats_sorted":["physics.space-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-09-29T09:24:07Z","title_canon_sha256":"118154ce6bebd6fceadd0704ca5be6bdbd8aee7ed2c617cef2a6e37674ed8a4d"},"schema_version":"1.0","source":{"id":"2209.14651","kind":"arxiv","version":1}},"canonical_sha256":"8fba1181b294caae1a14a8209143c78c42d3c1dc8067f8f84a22ae5e73710374","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fba1181b294caae1a14a8209143c78c42d3c1dc8067f8f84a22ae5e73710374","first_computed_at":"2026-07-05T05:02:04.344386Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:02:04.344386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"loTNUL8sUc6W+JK2xTMrr1KeQdyR3/3y5zSHXRAqqX2D51CLbaS/On3MNFvxVoUqaXScsutXewoVvovMbT1HCg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:02:04.344898Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.14651","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7f106e484cd58d60360e884618f7554a4a249076479582e753da36c41eaae1d","sha256:f74fe90473ca9fc3e36aed4b5e5c179fe08c63b6894d66790e4e45cff63c1243"],"state_sha256":"26040189837c6a3bf176b7ee048392b6defde600ea9131666f737d03130d6aeb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r2/olCwPFvoTa0a3kg23goQFM8zn68dAnPyp8uyvI3M7nhMkiRy4PePrbMRiYdLbg8dKIrmxTYfbxtR19KfBCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:42:12.594886Z","bundle_sha256":"146737999074e2bbd8b304c5f700f2aa7f83b1772410a9bcb33939ba18ad4451"}}