{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:J5JZ524FGUTFUR2XZVQIRWQ3LP","short_pith_number":"pith:J5JZ524F","canonical_record":{"source":{"id":"1307.2829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T15:38:17Z","cross_cats_sorted":[],"title_canon_sha256":"e25e1ce8e7013d9c8f3d9f58ce0d9d091a0b1b763749238a3adb13aeb5fc212e","abstract_canon_sha256":"1662c150863ecf67260e879ec58e86d9b730fa625f857bf0cff0b367da48fac8"},"schema_version":"1.0"},"canonical_sha256":"4f539eeb8535265a4757cd6088da1b5bf7f3312624dae49f298f97c6e725cd21","source":{"kind":"arxiv","id":"1307.2829","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2829","created_at":"2026-05-18T03:18:50Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2829v1","created_at":"2026-05-18T03:18:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2829","created_at":"2026-05-18T03:18:50Z"},{"alias_kind":"pith_short_12","alias_value":"J5JZ524FGUTF","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"J5JZ524FGUTFUR2X","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"J5JZ524F","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:J5JZ524FGUTFUR2XZVQIRWQ3LP","target":"record","payload":{"canonical_record":{"source":{"id":"1307.2829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T15:38:17Z","cross_cats_sorted":[],"title_canon_sha256":"e25e1ce8e7013d9c8f3d9f58ce0d9d091a0b1b763749238a3adb13aeb5fc212e","abstract_canon_sha256":"1662c150863ecf67260e879ec58e86d9b730fa625f857bf0cff0b367da48fac8"},"schema_version":"1.0"},"canonical_sha256":"4f539eeb8535265a4757cd6088da1b5bf7f3312624dae49f298f97c6e725cd21","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:50.318445Z","signature_b64":"t/fygbLhYP6m+hmBrNcRSk4ZaoKflk8xgFoFehYL+npAeRfeLd/2FwhSwMtUYR2srRzeyhKuNvxJO1FhSnUdAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4f539eeb8535265a4757cd6088da1b5bf7f3312624dae49f298f97c6e725cd21","last_reissued_at":"2026-05-18T03:18:50.317683Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:50.317683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.2829","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":"2026-05-18T03:18:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DCDZ3VQYq8lfub7Srt0je7Hm2tMOZk2dM68kO5v1iSxfGWImFV95K3A68GiuKWVD1hF9TKKsNfundMH1mlPGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:56:34.978108Z"},"content_sha256":"cdfee4747a85541570919ff50d92e712a5d1bcac93d85e4f779bf29b4475cd4f","schema_version":"1.0","event_id":"sha256:cdfee4747a85541570919ff50d92e712a5d1bcac93d85e4f779bf29b4475cd4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:J5JZ524FGUTFUR2XZVQIRWQ3LP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photospheric Injection of Magnetic Helicity: Connectivity--based Flux Density Method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"E. Pariat, G. Aulanier, K. Dalmasse, P. D\\'emoulin","submitted_at":"2013-07-10T15:38:17Z","abstract_excerpt":"Magnetic helicity quantifies how globally sheared and/or twisted is the magnetic field in a volume. This quantity is believed to play a key role in solar activity due to its conservation property. Helicity is continuously injected into the corona during the evolution of active regions (ARs). To better understand and quantify the role of magnetic helicity in solar activity, the distribution of magnetic helicity flux in ARs needs to be studied. The helicity distribution can be computed from the temporal evolution of photospheric magnetograms of ARs such as the ones provided by SDO/HMI and Hinode"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2829","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":"2026-05-18T03:18:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SetVuFDcG5mOZ6iOvOQq6GYWGyOPPfr1brtKPnL0I1hSgmneyBhqCgOBN4MjnuDaucW1BEZN65zjy6q5ae+qAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:56:34.978876Z"},"content_sha256":"d0f4254a05a7d2e38dc8292f53b0700185768601c236492fbeef253dea7e04c6","schema_version":"1.0","event_id":"sha256:d0f4254a05a7d2e38dc8292f53b0700185768601c236492fbeef253dea7e04c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J5JZ524FGUTFUR2XZVQIRWQ3LP/bundle.json","state_url":"https://pith.science/pith/J5JZ524FGUTFUR2XZVQIRWQ3LP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J5JZ524FGUTFUR2XZVQIRWQ3LP/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":"2026-06-10T22:56:34Z","links":{"resolver":"https://pith.science/pith/J5JZ524FGUTFUR2XZVQIRWQ3LP","bundle":"https://pith.science/pith/J5JZ524FGUTFUR2XZVQIRWQ3LP/bundle.json","state":"https://pith.science/pith/J5JZ524FGUTFUR2XZVQIRWQ3LP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J5JZ524FGUTFUR2XZVQIRWQ3LP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:J5JZ524FGUTFUR2XZVQIRWQ3LP","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":"1662c150863ecf67260e879ec58e86d9b730fa625f857bf0cff0b367da48fac8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T15:38:17Z","title_canon_sha256":"e25e1ce8e7013d9c8f3d9f58ce0d9d091a0b1b763749238a3adb13aeb5fc212e"},"schema_version":"1.0","source":{"id":"1307.2829","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2829","created_at":"2026-05-18T03:18:50Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2829v1","created_at":"2026-05-18T03:18:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2829","created_at":"2026-05-18T03:18:50Z"},{"alias_kind":"pith_short_12","alias_value":"J5JZ524FGUTF","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"J5JZ524FGUTFUR2X","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"J5JZ524F","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:d0f4254a05a7d2e38dc8292f53b0700185768601c236492fbeef253dea7e04c6","target":"graph","created_at":"2026-05-18T03:18:50Z","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"},"paper":{"abstract_excerpt":"Magnetic helicity quantifies how globally sheared and/or twisted is the magnetic field in a volume. This quantity is believed to play a key role in solar activity due to its conservation property. Helicity is continuously injected into the corona during the evolution of active regions (ARs). To better understand and quantify the role of magnetic helicity in solar activity, the distribution of magnetic helicity flux in ARs needs to be studied. The helicity distribution can be computed from the temporal evolution of photospheric magnetograms of ARs such as the ones provided by SDO/HMI and Hinode","authors_text":"E. Pariat, G. Aulanier, K. Dalmasse, P. D\\'emoulin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T15:38:17Z","title":"Photospheric Injection of Magnetic Helicity: Connectivity--based Flux Density Method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2829","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:cdfee4747a85541570919ff50d92e712a5d1bcac93d85e4f779bf29b4475cd4f","target":"record","created_at":"2026-05-18T03:18:50Z","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":"1662c150863ecf67260e879ec58e86d9b730fa625f857bf0cff0b367da48fac8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-10T15:38:17Z","title_canon_sha256":"e25e1ce8e7013d9c8f3d9f58ce0d9d091a0b1b763749238a3adb13aeb5fc212e"},"schema_version":"1.0","source":{"id":"1307.2829","kind":"arxiv","version":1}},"canonical_sha256":"4f539eeb8535265a4757cd6088da1b5bf7f3312624dae49f298f97c6e725cd21","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4f539eeb8535265a4757cd6088da1b5bf7f3312624dae49f298f97c6e725cd21","first_computed_at":"2026-05-18T03:18:50.317683Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:18:50.317683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t/fygbLhYP6m+hmBrNcRSk4ZaoKflk8xgFoFehYL+npAeRfeLd/2FwhSwMtUYR2srRzeyhKuNvxJO1FhSnUdAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:18:50.318445Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.2829","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cdfee4747a85541570919ff50d92e712a5d1bcac93d85e4f779bf29b4475cd4f","sha256:d0f4254a05a7d2e38dc8292f53b0700185768601c236492fbeef253dea7e04c6"],"state_sha256":"522c38e77136ae0f2364a0f9ab723fbb85115bb8481d5891b47d4d1364c9c489"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eP3NOzvx/yjNMqamoOEzu1V6KKFdpdqypzScQ36lXeS6pMJvtcdmTBE0yq6UCUWKAucLwXKzqOz+7tW+LKWiDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T22:56:34.982760Z","bundle_sha256":"1b0d11b5dfa9585e575c5eb13275e8a755756711ecfe21a68b3690cee6ecb1f2"}}