{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:OSH5KJYCXFTMLCVC3QHGHDJ44F","short_pith_number":"pith:OSH5KJYC","canonical_record":{"source":{"id":"2305.19418","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-05-30T21:20:00Z","cross_cats_sorted":[],"title_canon_sha256":"ee8168937eb8f1d9072f4c106cc11925a01446469d81fc66025ef4dbbd28c4dd","abstract_canon_sha256":"a46309ee557784b90a3f27b02f881e82a24aab32c03e0edba654643ceadc090f"},"schema_version":"1.0"},"canonical_sha256":"748fd52702b966c58aa2dc0e638d3ce14550b621b85c549f540745e219339504","source":{"kind":"arxiv","id":"2305.19418","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.19418","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"arxiv_version","alias_value":"2305.19418v1","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.19418","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"pith_short_12","alias_value":"OSH5KJYCXFTM","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"pith_short_16","alias_value":"OSH5KJYCXFTMLCVC","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"pith_short_8","alias_value":"OSH5KJYC","created_at":"2026-07-05T06:15:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:OSH5KJYCXFTMLCVC3QHGHDJ44F","target":"record","payload":{"canonical_record":{"source":{"id":"2305.19418","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-05-30T21:20:00Z","cross_cats_sorted":[],"title_canon_sha256":"ee8168937eb8f1d9072f4c106cc11925a01446469d81fc66025ef4dbbd28c4dd","abstract_canon_sha256":"a46309ee557784b90a3f27b02f881e82a24aab32c03e0edba654643ceadc090f"},"schema_version":"1.0"},"canonical_sha256":"748fd52702b966c58aa2dc0e638d3ce14550b621b85c549f540745e219339504","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:15:50.015069Z","signature_b64":"U7EXeh19GKqS2H0HQwwxtCkEFUW/qaTBGl9bEb186Hnv0BJgL6d9qsRfwyYjIi+ZrJ6yhpCSZJVKnh90Co/eCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"748fd52702b966c58aa2dc0e638d3ce14550b621b85c549f540745e219339504","last_reissued_at":"2026-07-05T06:15:50.014589Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:15:50.014589Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.19418","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":"2026-07-05T06:15:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TshQ8e2yoAZDtTwLVT7GRZbT5PnHGJZMkysCSOFmBe3VnZGQfqSiQbIzb9IHJ9g/qolj3ii4m6SSszgnecuADw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T11:40:00.718608Z"},"content_sha256":"822f6864770db603b9d4337a8b0a7b2dff23a67b6b8d433dcc31e123940af092","schema_version":"1.0","event_id":"sha256:822f6864770db603b9d4337a8b0a7b2dff23a67b6b8d433dcc31e123940af092"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:OSH5KJYCXFTMLCVC3QHGHDJ44F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The temporal and spatial evolution of MHD wave modes in sunspots","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. A. Aldhafeeri, A. B. Albidah, C. D. Macbride, D. B. Jess, G. Verth, I. Ballai, J. Higham, M. Stangalini, S. S. A. Silva, V. Fedun, W. Brevis","submitted_at":"2023-05-30T21:20:00Z","abstract_excerpt":"Through their lifetime sunspots undergo a change in their area and shape and, as they decay, they fragment into smaller structures. Here, for the first time we analyze the spatial structure of magnetohydrodynamic (MHD) slow body and fast surface modes in observed umbrae as their cross-sectional shape changes. The Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) techniques were used to analyze 3 and 6 hours SDO/HMI time series of Doppler velocities at the photospheric level of approximately circular and elliptically shaped sunspots. Each time series were divided equall"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.19418","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/2305.19418/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":"2026-07-05T06:15:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c3IF2VWVX2U/m6hIKU+Ujbe1VWDzFkz/5PF4cTk3fbr29Lmivg5bUNBqAr7r6WaxhDUSiyBN4Fdu0RCrB8NlBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T11:40:00.718980Z"},"content_sha256":"96b68d91637b8c2b0f6df1a5d1082dc6be08afa6efb6cf33f9d5680499d7294e","schema_version":"1.0","event_id":"sha256:96b68d91637b8c2b0f6df1a5d1082dc6be08afa6efb6cf33f9d5680499d7294e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OSH5KJYCXFTMLCVC3QHGHDJ44F/bundle.json","state_url":"https://pith.science/pith/OSH5KJYCXFTMLCVC3QHGHDJ44F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OSH5KJYCXFTMLCVC3QHGHDJ44F/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":"2026-07-10T11:40:00Z","links":{"resolver":"https://pith.science/pith/OSH5KJYCXFTMLCVC3QHGHDJ44F","bundle":"https://pith.science/pith/OSH5KJYCXFTMLCVC3QHGHDJ44F/bundle.json","state":"https://pith.science/pith/OSH5KJYCXFTMLCVC3QHGHDJ44F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OSH5KJYCXFTMLCVC3QHGHDJ44F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:OSH5KJYCXFTMLCVC3QHGHDJ44F","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":"a46309ee557784b90a3f27b02f881e82a24aab32c03e0edba654643ceadc090f","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-05-30T21:20:00Z","title_canon_sha256":"ee8168937eb8f1d9072f4c106cc11925a01446469d81fc66025ef4dbbd28c4dd"},"schema_version":"1.0","source":{"id":"2305.19418","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.19418","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"arxiv_version","alias_value":"2305.19418v1","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.19418","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"pith_short_12","alias_value":"OSH5KJYCXFTM","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"pith_short_16","alias_value":"OSH5KJYCXFTMLCVC","created_at":"2026-07-05T06:15:50Z"},{"alias_kind":"pith_short_8","alias_value":"OSH5KJYC","created_at":"2026-07-05T06:15:50Z"}],"graph_snapshots":[{"event_id":"sha256:96b68d91637b8c2b0f6df1a5d1082dc6be08afa6efb6cf33f9d5680499d7294e","target":"graph","created_at":"2026-07-05T06:15:50Z","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/2305.19418/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Through their lifetime sunspots undergo a change in their area and shape and, as they decay, they fragment into smaller structures. Here, for the first time we analyze the spatial structure of magnetohydrodynamic (MHD) slow body and fast surface modes in observed umbrae as their cross-sectional shape changes. The Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD) techniques were used to analyze 3 and 6 hours SDO/HMI time series of Doppler velocities at the photospheric level of approximately circular and elliptically shaped sunspots. Each time series were divided equall","authors_text":"A. A. Aldhafeeri, A. B. Albidah, C. D. Macbride, D. B. Jess, G. Verth, I. Ballai, J. Higham, M. Stangalini, S. S. A. Silva, V. Fedun, W. Brevis","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-05-30T21:20:00Z","title":"The temporal and spatial evolution of MHD wave modes in sunspots"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.19418","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":"sha256:822f6864770db603b9d4337a8b0a7b2dff23a67b6b8d433dcc31e123940af092","target":"record","created_at":"2026-07-05T06:15:50Z","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":"a46309ee557784b90a3f27b02f881e82a24aab32c03e0edba654643ceadc090f","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-05-30T21:20:00Z","title_canon_sha256":"ee8168937eb8f1d9072f4c106cc11925a01446469d81fc66025ef4dbbd28c4dd"},"schema_version":"1.0","source":{"id":"2305.19418","kind":"arxiv","version":1}},"canonical_sha256":"748fd52702b966c58aa2dc0e638d3ce14550b621b85c549f540745e219339504","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"748fd52702b966c58aa2dc0e638d3ce14550b621b85c549f540745e219339504","first_computed_at":"2026-07-05T06:15:50.014589Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:15:50.014589Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U7EXeh19GKqS2H0HQwwxtCkEFUW/qaTBGl9bEb186Hnv0BJgL6d9qsRfwyYjIi+ZrJ6yhpCSZJVKnh90Co/eCw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:15:50.015069Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.19418","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:822f6864770db603b9d4337a8b0a7b2dff23a67b6b8d433dcc31e123940af092","sha256:96b68d91637b8c2b0f6df1a5d1082dc6be08afa6efb6cf33f9d5680499d7294e"],"state_sha256":"8026325b6fe06d30387a0c16befa39848064e5c126263f41b4ac2fedef6444c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B4tQOnzvZ0+CleNMroErpna+ggHOOvMtfFXIFlf1gPbyVm9P1QemhYYKv/grx2YF94U5LZbfQ8DnIDOo25wVBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T11:40:00.720859Z","bundle_sha256":"081fb52c493961a8f51f2a742a57174e39bb97545b1a145db5db2e74060777e8"}}