{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:PUM4UUPJWEHZEERYXFMUPS25FC","short_pith_number":"pith:PUM4UUPJ","canonical_record":{"source":{"id":"1202.1944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-09T10:57:47Z","cross_cats_sorted":[],"title_canon_sha256":"a778f2ef65469d2bf86b8d7ff00bb795aa787c75884c8ed9c9f1cf99df06da57","abstract_canon_sha256":"5e9b08259e26a235b5935fa568b0962dcd318cc91b73a3fbf79b84095cfd1dc7"},"schema_version":"1.0"},"canonical_sha256":"7d19ca51e9b10f921238b95947cb5d2887ddefb0ff9f90f5bdc34ab2a6c41195","source":{"kind":"arxiv","id":"1202.1944","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.1944","created_at":"2026-05-18T01:58:31Z"},{"alias_kind":"arxiv_version","alias_value":"1202.1944v1","created_at":"2026-05-18T01:58:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.1944","created_at":"2026-05-18T01:58:31Z"},{"alias_kind":"pith_short_12","alias_value":"PUM4UUPJWEHZ","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PUM4UUPJWEHZEERY","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PUM4UUPJ","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:PUM4UUPJWEHZEERYXFMUPS25FC","target":"record","payload":{"canonical_record":{"source":{"id":"1202.1944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-09T10:57:47Z","cross_cats_sorted":[],"title_canon_sha256":"a778f2ef65469d2bf86b8d7ff00bb795aa787c75884c8ed9c9f1cf99df06da57","abstract_canon_sha256":"5e9b08259e26a235b5935fa568b0962dcd318cc91b73a3fbf79b84095cfd1dc7"},"schema_version":"1.0"},"canonical_sha256":"7d19ca51e9b10f921238b95947cb5d2887ddefb0ff9f90f5bdc34ab2a6c41195","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:31.861580Z","signature_b64":"tZl6QO3T6nTcgEfVoly8NS0Z7aYDvnhSCJ0h3RysR21ZKqoR8QtBYM+7cXNO6EcFyfz9aBOtoyujiuHDFL2ECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d19ca51e9b10f921238b95947cb5d2887ddefb0ff9f90f5bdc34ab2a6c41195","last_reissued_at":"2026-05-18T01:58:31.861061Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:31.861061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.1944","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":"2026-05-18T01:58:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OzumbnZjzocIaw55jZ+QAmx2JDo5HDQyMU4ZNOy6uP5ixGCDeuYyEVrCa7egyVCaH78B7y47m0ok5syxDpA/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:37:51.719174Z"},"content_sha256":"39ed6f1ec3d2480c5649ea1dc8714d681c04d2439d0eadf375d4c46b64b6b60a","schema_version":"1.0","event_id":"sha256:39ed6f1ec3d2480c5649ea1dc8714d681c04d2439d0eadf375d4c46b64b6b60a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:PUM4UUPJWEHZEERYXFMUPS25FC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MHD Waves and Coronal Seismology: an overview of recent results","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ineke De Moortel, Valery M. Nakariakov","submitted_at":"2012-02-09T10:57:47Z","abstract_excerpt":"Recent observations have revealed that MHD waves and oscillations are ubiquitous in the solar atmosphere, with a wide range of periods. We give a brief review of some aspects of MHD waves and coronal seismology which have recently been the focus of intense debate or are newly emerging. In particular, we focus on four topics: (i) the current controversy surrounding propagating intensity perturbations along coronal loops, (ii) the interpretation of propagating transverse loop oscillations, (iii) the ongoing search for coronal (torsional) Alfven waves and (iv) the rapidly developing topic of quas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.1944","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":""},"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":"2026-05-18T01:58:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qnou5A8T9MADWvjPcX/V3LIbJl40XHxB9PkIKV7AfqkP84v0qFO1/APfn/9jpXnibrRD7qwdVTyB1Y3UcMRtCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:37:51.720007Z"},"content_sha256":"0da5dcf75176ef35c7d861f4c8f93fe8bc29cb92739f1daea95d02f35bb7fbcf","schema_version":"1.0","event_id":"sha256:0da5dcf75176ef35c7d861f4c8f93fe8bc29cb92739f1daea95d02f35bb7fbcf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PUM4UUPJWEHZEERYXFMUPS25FC/bundle.json","state_url":"https://pith.science/pith/PUM4UUPJWEHZEERYXFMUPS25FC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PUM4UUPJWEHZEERYXFMUPS25FC/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":"2026-06-11T06:37:51Z","links":{"resolver":"https://pith.science/pith/PUM4UUPJWEHZEERYXFMUPS25FC","bundle":"https://pith.science/pith/PUM4UUPJWEHZEERYXFMUPS25FC/bundle.json","state":"https://pith.science/pith/PUM4UUPJWEHZEERYXFMUPS25FC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PUM4UUPJWEHZEERYXFMUPS25FC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PUM4UUPJWEHZEERYXFMUPS25FC","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":"5e9b08259e26a235b5935fa568b0962dcd318cc91b73a3fbf79b84095cfd1dc7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-09T10:57:47Z","title_canon_sha256":"a778f2ef65469d2bf86b8d7ff00bb795aa787c75884c8ed9c9f1cf99df06da57"},"schema_version":"1.0","source":{"id":"1202.1944","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.1944","created_at":"2026-05-18T01:58:31Z"},{"alias_kind":"arxiv_version","alias_value":"1202.1944v1","created_at":"2026-05-18T01:58:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.1944","created_at":"2026-05-18T01:58:31Z"},{"alias_kind":"pith_short_12","alias_value":"PUM4UUPJWEHZ","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PUM4UUPJWEHZEERY","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PUM4UUPJ","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:0da5dcf75176ef35c7d861f4c8f93fe8bc29cb92739f1daea95d02f35bb7fbcf","target":"graph","created_at":"2026-05-18T01:58:31Z","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"},"paper":{"abstract_excerpt":"Recent observations have revealed that MHD waves and oscillations are ubiquitous in the solar atmosphere, with a wide range of periods. We give a brief review of some aspects of MHD waves and coronal seismology which have recently been the focus of intense debate or are newly emerging. In particular, we focus on four topics: (i) the current controversy surrounding propagating intensity perturbations along coronal loops, (ii) the interpretation of propagating transverse loop oscillations, (iii) the ongoing search for coronal (torsional) Alfven waves and (iv) the rapidly developing topic of quas","authors_text":"Ineke De Moortel, Valery M. Nakariakov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-09T10:57:47Z","title":"MHD Waves and Coronal Seismology: an overview of recent results"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.1944","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":"sha256:39ed6f1ec3d2480c5649ea1dc8714d681c04d2439d0eadf375d4c46b64b6b60a","target":"record","created_at":"2026-05-18T01:58:31Z","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":"5e9b08259e26a235b5935fa568b0962dcd318cc91b73a3fbf79b84095cfd1dc7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-09T10:57:47Z","title_canon_sha256":"a778f2ef65469d2bf86b8d7ff00bb795aa787c75884c8ed9c9f1cf99df06da57"},"schema_version":"1.0","source":{"id":"1202.1944","kind":"arxiv","version":1}},"canonical_sha256":"7d19ca51e9b10f921238b95947cb5d2887ddefb0ff9f90f5bdc34ab2a6c41195","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d19ca51e9b10f921238b95947cb5d2887ddefb0ff9f90f5bdc34ab2a6c41195","first_computed_at":"2026-05-18T01:58:31.861061Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:31.861061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tZl6QO3T6nTcgEfVoly8NS0Z7aYDvnhSCJ0h3RysR21ZKqoR8QtBYM+7cXNO6EcFyfz9aBOtoyujiuHDFL2ECg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:31.861580Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.1944","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39ed6f1ec3d2480c5649ea1dc8714d681c04d2439d0eadf375d4c46b64b6b60a","sha256:0da5dcf75176ef35c7d861f4c8f93fe8bc29cb92739f1daea95d02f35bb7fbcf"],"state_sha256":"196bd1c3421b422c2a9ff49249b6bcbdb524471ab9c46b840d61ae16e810b5cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xYioC1rHiWFC10MnIPBbT38fTmAhoTDyLgAn/CYTpZqCWP3VGThCwRA51uTACOHTsibgps62RpV2R1/uyKGBAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T06:37:51.724095Z","bundle_sha256":"7cf896ecf288a42f5cb3c188b42213ed166eaef30a8461345d7b000c118ad9ee"}}