{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:27SCUSCOVF2E2YAUCVLYPLN6L7","short_pith_number":"pith:27SCUSCO","canonical_record":{"source":{"id":"1807.01271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-03T16:38:18Z","cross_cats_sorted":[],"title_canon_sha256":"763efc91f672d46262562eeaf580fab1a6323fbde3795127e28688a489037af0","abstract_canon_sha256":"b632ccabcc347aa82b828cb0d3517b7442b35983145adc6df324c7d629c0716f"},"schema_version":"1.0"},"canonical_sha256":"d7e42a484ea9744d6014155787adbe5fe9b42cbb02b84e173196665fe2298d25","source":{"kind":"arxiv","id":"1807.01271","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01271","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01271v1","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01271","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"pith_short_12","alias_value":"27SCUSCOVF2E","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"27SCUSCOVF2E2YAU","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"27SCUSCO","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:27SCUSCOVF2E2YAUCVLYPLN6L7","target":"record","payload":{"canonical_record":{"source":{"id":"1807.01271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-03T16:38:18Z","cross_cats_sorted":[],"title_canon_sha256":"763efc91f672d46262562eeaf580fab1a6323fbde3795127e28688a489037af0","abstract_canon_sha256":"b632ccabcc347aa82b828cb0d3517b7442b35983145adc6df324c7d629c0716f"},"schema_version":"1.0"},"canonical_sha256":"d7e42a484ea9744d6014155787adbe5fe9b42cbb02b84e173196665fe2298d25","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:44.739235Z","signature_b64":"KreAYFnxsa3KMLshvRrnhM5rCdtWE1X09xn8x/0HTcwWPs+nXsh+/Q8eu0QGw6EPCKd50eb1AbVvqKLxTeLCAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7e42a484ea9744d6014155787adbe5fe9b42cbb02b84e173196665fe2298d25","last_reissued_at":"2026-05-18T00:11:44.738571Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:44.738571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.01271","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":"2026-05-18T00:11:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qZKU5avGl4IFzU7hy/yDyC1ASH0vjLLwHFpRw6S+iyKRkBMepDJ8L2QXFVy8mVJnovTnf+ryIusuJEpg6/pZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:49:51.713127Z"},"content_sha256":"4421ad91fef8e5c893db332fac30bfd5e1d8e3ccc0ad1b55611fe5de302795c7","schema_version":"1.0","event_id":"sha256:4421ad91fef8e5c893db332fac30bfd5e1d8e3ccc0ad1b55611fe5de302795c7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:27SCUSCOVF2E2YAUCVLYPLN6L7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Powerful solar flares in September 2017. Comparison with the largest flares in cycle 24","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"E. A. Bruevich, V. V. Bruevich","submitted_at":"2018-07-03T16:38:18Z","abstract_excerpt":"Solar flare activity in cycle 24 is studied. Satellite observations of x-ray fluxes from GOES-15 and UV emission lines from the SDO/EVE experiment are used. The most powerful flares of cycle 24 in classes X9.3 and X8.2 in September 2017 are compared with powerful flares in classes M5-X6.9. The times at which the fluxes in the 30.4 and 9.4 nm lines and in the 0.1-0.8 nm x-ray range begin to increase are compared for 21 of the large flares. The total energies arriving at the earth from flares in the 30.4 and 9.4 nm lines and in the 0.1-0.9 nm x-ray range, $E_{30.4}$, $E_{9.4}$, and $E_{0.1-0.8}$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01271","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":"2026-05-18T00:11:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cDL31FElLII5VXILfW+WTcT/PumXXx+ipBmmfGcSRi2ymYsNB62zcro5pBnGju4Akgkv95ep7VzWzwdaLR8bDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:49:51.713494Z"},"content_sha256":"d49a6d490bcbff556f81c7eea85d8147769f3dbf3f829f3fc9d00da48777d636","schema_version":"1.0","event_id":"sha256:d49a6d490bcbff556f81c7eea85d8147769f3dbf3f829f3fc9d00da48777d636"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/27SCUSCOVF2E2YAUCVLYPLN6L7/bundle.json","state_url":"https://pith.science/pith/27SCUSCOVF2E2YAUCVLYPLN6L7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/27SCUSCOVF2E2YAUCVLYPLN6L7/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":"2026-05-31T02:49:51Z","links":{"resolver":"https://pith.science/pith/27SCUSCOVF2E2YAUCVLYPLN6L7","bundle":"https://pith.science/pith/27SCUSCOVF2E2YAUCVLYPLN6L7/bundle.json","state":"https://pith.science/pith/27SCUSCOVF2E2YAUCVLYPLN6L7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/27SCUSCOVF2E2YAUCVLYPLN6L7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:27SCUSCOVF2E2YAUCVLYPLN6L7","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":"b632ccabcc347aa82b828cb0d3517b7442b35983145adc6df324c7d629c0716f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-03T16:38:18Z","title_canon_sha256":"763efc91f672d46262562eeaf580fab1a6323fbde3795127e28688a489037af0"},"schema_version":"1.0","source":{"id":"1807.01271","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01271","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01271v1","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01271","created_at":"2026-05-18T00:11:44Z"},{"alias_kind":"pith_short_12","alias_value":"27SCUSCOVF2E","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"27SCUSCOVF2E2YAU","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"27SCUSCO","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:d49a6d490bcbff556f81c7eea85d8147769f3dbf3f829f3fc9d00da48777d636","target":"graph","created_at":"2026-05-18T00:11:44Z","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":"Solar flare activity in cycle 24 is studied. Satellite observations of x-ray fluxes from GOES-15 and UV emission lines from the SDO/EVE experiment are used. The most powerful flares of cycle 24 in classes X9.3 and X8.2 in September 2017 are compared with powerful flares in classes M5-X6.9. The times at which the fluxes in the 30.4 and 9.4 nm lines and in the 0.1-0.8 nm x-ray range begin to increase are compared for 21 of the large flares. The total energies arriving at the earth from flares in the 30.4 and 9.4 nm lines and in the 0.1-0.9 nm x-ray range, $E_{30.4}$, $E_{9.4}$, and $E_{0.1-0.8}$","authors_text":"E. A. Bruevich, V. V. Bruevich","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-03T16:38:18Z","title":"Powerful solar flares in September 2017. Comparison with the largest flares in cycle 24"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01271","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":"sha256:4421ad91fef8e5c893db332fac30bfd5e1d8e3ccc0ad1b55611fe5de302795c7","target":"record","created_at":"2026-05-18T00:11:44Z","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":"b632ccabcc347aa82b828cb0d3517b7442b35983145adc6df324c7d629c0716f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-03T16:38:18Z","title_canon_sha256":"763efc91f672d46262562eeaf580fab1a6323fbde3795127e28688a489037af0"},"schema_version":"1.0","source":{"id":"1807.01271","kind":"arxiv","version":1}},"canonical_sha256":"d7e42a484ea9744d6014155787adbe5fe9b42cbb02b84e173196665fe2298d25","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7e42a484ea9744d6014155787adbe5fe9b42cbb02b84e173196665fe2298d25","first_computed_at":"2026-05-18T00:11:44.738571Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:44.738571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KreAYFnxsa3KMLshvRrnhM5rCdtWE1X09xn8x/0HTcwWPs+nXsh+/Q8eu0QGw6EPCKd50eb1AbVvqKLxTeLCAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:44.739235Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.01271","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4421ad91fef8e5c893db332fac30bfd5e1d8e3ccc0ad1b55611fe5de302795c7","sha256:d49a6d490bcbff556f81c7eea85d8147769f3dbf3f829f3fc9d00da48777d636"],"state_sha256":"21ff0e872a8007a19b47654cec12bb4f49d3a1aaf416d56ee4221afeaaf1698f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mrN2eoSjwu4hf6POf0VVqbiWc1WG98wd/VF03r7kV9bYTpS2zAHNCh3apl9b3ciwSA7BDuNUbUCm7AvhNEEUCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T02:49:51.715675Z","bundle_sha256":"449c6c7af1ea3e2a1734e0c9f8189c63748a94f8223d217f1c86050e07dde550"}}