{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:R6ZAV46RUX6SYBACTVCNSJRIO3","short_pith_number":"pith:R6ZAV46R","canonical_record":{"source":{"id":"1511.04692","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-15T12:42:51Z","cross_cats_sorted":[],"title_canon_sha256":"591f7a8240321a0f1a4ba7609704ae62db227c53e3e52e9198e01573caf07fd6","abstract_canon_sha256":"0f2ffa170adde7d845055262249e2c0b2d7e8fcfa3fb01c8863349156c68df0b"},"schema_version":"1.0"},"canonical_sha256":"8fb20af3d1a5fd2c04029d44d9262876d2ad218ef4b74285a9028a91af06a411","source":{"kind":"arxiv","id":"1511.04692","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04692","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04692v1","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04692","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"R6ZAV46RUX6S","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"R6ZAV46RUX6SYBAC","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"R6ZAV46R","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:R6ZAV46RUX6SYBACTVCNSJRIO3","target":"record","payload":{"canonical_record":{"source":{"id":"1511.04692","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-15T12:42:51Z","cross_cats_sorted":[],"title_canon_sha256":"591f7a8240321a0f1a4ba7609704ae62db227c53e3e52e9198e01573caf07fd6","abstract_canon_sha256":"0f2ffa170adde7d845055262249e2c0b2d7e8fcfa3fb01c8863349156c68df0b"},"schema_version":"1.0"},"canonical_sha256":"8fb20af3d1a5fd2c04029d44d9262876d2ad218ef4b74285a9028a91af06a411","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:54.196762Z","signature_b64":"Gi8qsK1pLoro+l39FGsaeKBCgW2H1fPo0PfFhUGebitzzsAQMyQRsnu9hsD6TjrlA8iSdxJCC1H+/+P1/8wvBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8fb20af3d1a5fd2c04029d44d9262876d2ad218ef4b74285a9028a91af06a411","last_reissued_at":"2026-05-18T01:23:54.196081Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:54.196081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.04692","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":"2026-05-18T01:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ez0LXJU9xCtCwZKOIxSt++6AzI9DEQ8NFn6uo+/oL+j0ai39Wg9Ppr8yVbdR3wjbCW8vBbFto9BmpfgS77aUAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T15:17:50.969581Z"},"content_sha256":"e88c07a8356c5debc99557e87e0077734bf290b79764aa28f9ae2bb1ff74c6e1","schema_version":"1.0","event_id":"sha256:e88c07a8356c5debc99557e87e0077734bf290b79764aa28f9ae2bb1ff74c6e1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:R6ZAV46RUX6SYBACTVCNSJRIO3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Statistical Analysis of Filament Features Based on the H{\\alpha} Solar Images from 1988 to 2013 by Computer Automated Detection Method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Fang, P. F. Chen, Q. Hao, W. Cao","submitted_at":"2015-11-15T12:42:51Z","abstract_excerpt":"We improve our filament automated detection method which was proposed in our previous works. It is then applied to process the full disk H$\\alpha$ data mainly obtained by Big Bear Solar Observatory (BBSO) from 1988 to 2013, spanning nearly 3 solar cycles. The butterfly diagrams of the filaments, showing the information of the filament area, spine length, tilt angle, and the barb number, are obtained. The variations of these features with the calendar year and the latitude band are analyzed. The drift velocities of the filaments in different latitude bands are calculated and studied. We also in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04692","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":"2026-05-18T01:23:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2XDfJ/K6K1PX/9ojBn6OFF+F1Ti7w1cjTcP3Y0sZNhSGm9aXEGgXG3J92lnfbBiJ5D+YfkMr3/MrrZieAXdmDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T15:17:50.970153Z"},"content_sha256":"56b6a8b20585e591657d80bb4e35de510f9971b73f2d4fa9ed52c8921890c504","schema_version":"1.0","event_id":"sha256:56b6a8b20585e591657d80bb4e35de510f9971b73f2d4fa9ed52c8921890c504"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R6ZAV46RUX6SYBACTVCNSJRIO3/bundle.json","state_url":"https://pith.science/pith/R6ZAV46RUX6SYBACTVCNSJRIO3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R6ZAV46RUX6SYBACTVCNSJRIO3/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":"2026-06-27T15:17:50Z","links":{"resolver":"https://pith.science/pith/R6ZAV46RUX6SYBACTVCNSJRIO3","bundle":"https://pith.science/pith/R6ZAV46RUX6SYBACTVCNSJRIO3/bundle.json","state":"https://pith.science/pith/R6ZAV46RUX6SYBACTVCNSJRIO3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R6ZAV46RUX6SYBACTVCNSJRIO3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:R6ZAV46RUX6SYBACTVCNSJRIO3","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":"0f2ffa170adde7d845055262249e2c0b2d7e8fcfa3fb01c8863349156c68df0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-15T12:42:51Z","title_canon_sha256":"591f7a8240321a0f1a4ba7609704ae62db227c53e3e52e9198e01573caf07fd6"},"schema_version":"1.0","source":{"id":"1511.04692","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04692","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04692v1","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04692","created_at":"2026-05-18T01:23:54Z"},{"alias_kind":"pith_short_12","alias_value":"R6ZAV46RUX6S","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"R6ZAV46RUX6SYBAC","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"R6ZAV46R","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:56b6a8b20585e591657d80bb4e35de510f9971b73f2d4fa9ed52c8921890c504","target":"graph","created_at":"2026-05-18T01:23:54Z","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":"We improve our filament automated detection method which was proposed in our previous works. It is then applied to process the full disk H$\\alpha$ data mainly obtained by Big Bear Solar Observatory (BBSO) from 1988 to 2013, spanning nearly 3 solar cycles. The butterfly diagrams of the filaments, showing the information of the filament area, spine length, tilt angle, and the barb number, are obtained. The variations of these features with the calendar year and the latitude band are analyzed. The drift velocities of the filaments in different latitude bands are calculated and studied. We also in","authors_text":"C. Fang, P. F. Chen, Q. Hao, W. Cao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-15T12:42:51Z","title":"Statistical Analysis of Filament Features Based on the H{\\alpha} Solar Images from 1988 to 2013 by Computer Automated Detection Method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04692","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:e88c07a8356c5debc99557e87e0077734bf290b79764aa28f9ae2bb1ff74c6e1","target":"record","created_at":"2026-05-18T01:23:54Z","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":"0f2ffa170adde7d845055262249e2c0b2d7e8fcfa3fb01c8863349156c68df0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-15T12:42:51Z","title_canon_sha256":"591f7a8240321a0f1a4ba7609704ae62db227c53e3e52e9198e01573caf07fd6"},"schema_version":"1.0","source":{"id":"1511.04692","kind":"arxiv","version":1}},"canonical_sha256":"8fb20af3d1a5fd2c04029d44d9262876d2ad218ef4b74285a9028a91af06a411","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fb20af3d1a5fd2c04029d44d9262876d2ad218ef4b74285a9028a91af06a411","first_computed_at":"2026-05-18T01:23:54.196081Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:23:54.196081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gi8qsK1pLoro+l39FGsaeKBCgW2H1fPo0PfFhUGebitzzsAQMyQRsnu9hsD6TjrlA8iSdxJCC1H+/+P1/8wvBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:23:54.196762Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.04692","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e88c07a8356c5debc99557e87e0077734bf290b79764aa28f9ae2bb1ff74c6e1","sha256:56b6a8b20585e591657d80bb4e35de510f9971b73f2d4fa9ed52c8921890c504"],"state_sha256":"8067d92c73f5028dadbf7bbc1741498d461c9b811c655d80864166c394388d1d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0nuSE6mqJaRjQPmVYMtfffch/WFoFnytZxPjQu6gvBSB07lobqZY1OCwltPAVPMLG5L3c3l+yoEvsPWigELbBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T15:17:50.971992Z","bundle_sha256":"16fb7afda5cb348663cafe6b6bffb6fdb54bab3122ef3769bf83566b9ae01c1f"}}