{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:FN4KFZQA6IEDNFNTURXAXQMRMZ","short_pith_number":"pith:FN4KFZQA","canonical_record":{"source":{"id":"1307.2303","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T23:32:04Z","cross_cats_sorted":[],"title_canon_sha256":"efe0773cb2c69ef4b2fdff9552395adcf782cf2dc8d223673e55873b651602c9","abstract_canon_sha256":"9b00e3e755401827edd2294069226cf6977e94d154f3bdc42d85885c1a9a0862"},"schema_version":"1.0"},"canonical_sha256":"2b78a2e600f2083695b3a46e0bc191664238b3718382419c99c12c235cfd39eb","source":{"kind":"arxiv","id":"1307.2303","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2303","created_at":"2026-05-18T03:18:52Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2303v1","created_at":"2026-05-18T03:18:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2303","created_at":"2026-05-18T03:18:52Z"},{"alias_kind":"pith_short_12","alias_value":"FN4KFZQA6IED","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FN4KFZQA6IEDNFNT","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FN4KFZQA","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:FN4KFZQA6IEDNFNTURXAXQMRMZ","target":"record","payload":{"canonical_record":{"source":{"id":"1307.2303","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T23:32:04Z","cross_cats_sorted":[],"title_canon_sha256":"efe0773cb2c69ef4b2fdff9552395adcf782cf2dc8d223673e55873b651602c9","abstract_canon_sha256":"9b00e3e755401827edd2294069226cf6977e94d154f3bdc42d85885c1a9a0862"},"schema_version":"1.0"},"canonical_sha256":"2b78a2e600f2083695b3a46e0bc191664238b3718382419c99c12c235cfd39eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:52.906175Z","signature_b64":"6QKvBt+HP+RLrzzk2L6kwwl2/RfSZ3MABSGX1HDIDDtcoaJAlSmYycAO6TIXNYTdSaGz/CNZ5z+BWsvjdYnhDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b78a2e600f2083695b3a46e0bc191664238b3718382419c99c12c235cfd39eb","last_reissued_at":"2026-05-18T03:18:52.905397Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:52.905397Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.2303","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":"2026-05-18T03:18:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hySjNyKue4Kj3SBbH6nkxml1lGCgbHTEpDNzPJCE6LF/q8d+V1TcUqsXgH3zyidhTzlM215vta4wCaR8nJu0CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T01:52:27.716966Z"},"content_sha256":"24527edbf8e0e8611442ae94a7622332eb7870bf7641083f25a0cab63a6a6d4f","schema_version":"1.0","event_id":"sha256:24527edbf8e0e8611442ae94a7622332eb7870bf7641083f25a0cab63a6a6d4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:FN4KFZQA6IEDNFNTURXAXQMRMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Apparent Solar Tornado - Like Prominences","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Marco Velli, Olga Panasenco, Sara F. Martin","submitted_at":"2013-07-08T23:32:04Z","abstract_excerpt":"Recent high-resolution observations from the Solar Dynamics Observatory (SDO) have reawakened interest in the old and fascinating phenomenon of solar tornado-like prominences. This class of prominences was first introduced by Pettit (1932), who studied them over many years. Observations of tornado prominences similar to the ones seen by SDO had already been documented by Secchi (1877) in his famous \"Le Soleil\". High resolution and high cadence multiwavelength data obtained by SDO reveal that the tornado-like appearance of these prominences is mainly an illusion due to projection effects. We di"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2303","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":"2026-05-18T03:18:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pfmj0vXTrpGE3LbIjGriFHiLSQXh+Es8Jte4sl5girsIjRyCxOSbSQtrHTs5iyj5dPZeeUQ4IG7SphzjZ4ovDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T01:52:27.717310Z"},"content_sha256":"84ca7835ebacf9910f20d607e97a8a2835a9d2a581af636d58294360418827af","schema_version":"1.0","event_id":"sha256:84ca7835ebacf9910f20d607e97a8a2835a9d2a581af636d58294360418827af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FN4KFZQA6IEDNFNTURXAXQMRMZ/bundle.json","state_url":"https://pith.science/pith/FN4KFZQA6IEDNFNTURXAXQMRMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FN4KFZQA6IEDNFNTURXAXQMRMZ/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":"2026-06-29T01:52:27Z","links":{"resolver":"https://pith.science/pith/FN4KFZQA6IEDNFNTURXAXQMRMZ","bundle":"https://pith.science/pith/FN4KFZQA6IEDNFNTURXAXQMRMZ/bundle.json","state":"https://pith.science/pith/FN4KFZQA6IEDNFNTURXAXQMRMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FN4KFZQA6IEDNFNTURXAXQMRMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FN4KFZQA6IEDNFNTURXAXQMRMZ","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":"9b00e3e755401827edd2294069226cf6977e94d154f3bdc42d85885c1a9a0862","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T23:32:04Z","title_canon_sha256":"efe0773cb2c69ef4b2fdff9552395adcf782cf2dc8d223673e55873b651602c9"},"schema_version":"1.0","source":{"id":"1307.2303","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2303","created_at":"2026-05-18T03:18:52Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2303v1","created_at":"2026-05-18T03:18:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2303","created_at":"2026-05-18T03:18:52Z"},{"alias_kind":"pith_short_12","alias_value":"FN4KFZQA6IED","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FN4KFZQA6IEDNFNT","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FN4KFZQA","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:84ca7835ebacf9910f20d607e97a8a2835a9d2a581af636d58294360418827af","target":"graph","created_at":"2026-05-18T03:18:52Z","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 high-resolution observations from the Solar Dynamics Observatory (SDO) have reawakened interest in the old and fascinating phenomenon of solar tornado-like prominences. This class of prominences was first introduced by Pettit (1932), who studied them over many years. Observations of tornado prominences similar to the ones seen by SDO had already been documented by Secchi (1877) in his famous \"Le Soleil\". High resolution and high cadence multiwavelength data obtained by SDO reveal that the tornado-like appearance of these prominences is mainly an illusion due to projection effects. We di","authors_text":"Marco Velli, Olga Panasenco, Sara F. Martin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T23:32:04Z","title":"Apparent Solar Tornado - Like Prominences"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2303","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":"sha256:24527edbf8e0e8611442ae94a7622332eb7870bf7641083f25a0cab63a6a6d4f","target":"record","created_at":"2026-05-18T03:18:52Z","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":"9b00e3e755401827edd2294069226cf6977e94d154f3bdc42d85885c1a9a0862","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-08T23:32:04Z","title_canon_sha256":"efe0773cb2c69ef4b2fdff9552395adcf782cf2dc8d223673e55873b651602c9"},"schema_version":"1.0","source":{"id":"1307.2303","kind":"arxiv","version":1}},"canonical_sha256":"2b78a2e600f2083695b3a46e0bc191664238b3718382419c99c12c235cfd39eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2b78a2e600f2083695b3a46e0bc191664238b3718382419c99c12c235cfd39eb","first_computed_at":"2026-05-18T03:18:52.905397Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:18:52.905397Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6QKvBt+HP+RLrzzk2L6kwwl2/RfSZ3MABSGX1HDIDDtcoaJAlSmYycAO6TIXNYTdSaGz/CNZ5z+BWsvjdYnhDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:18:52.906175Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.2303","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24527edbf8e0e8611442ae94a7622332eb7870bf7641083f25a0cab63a6a6d4f","sha256:84ca7835ebacf9910f20d607e97a8a2835a9d2a581af636d58294360418827af"],"state_sha256":"a4e7306e3cef104305a604cf50f34b902f77de2ce233df47ee25414fa900c445"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tnBWJe2ReC8YnCZvwIDPhv3B/9/k+tm6o3U/sjYDZTeBw5b0UWNyb7fGwCKcnZQLItTZmbwsvp+f2qMJP8gJDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T01:52:27.719327Z","bundle_sha256":"ff93bc751cebac37a50c3c4fca8e94033e4fde4872a68cba1a7db984fa37ab23"}}