{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:T7RWY5V3UE2XXRYFMI2O5OUH4G","short_pith_number":"pith:T7RWY5V3","canonical_record":{"source":{"id":"1901.04369","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-14T16:03:01Z","cross_cats_sorted":[],"title_canon_sha256":"6b1dc78ecae26fe8e28f3c885b3bd3472fc5362cf8c9e6c33ae135312ce660fc","abstract_canon_sha256":"6ce4f81dc4a9e4e1a73263713422dce889d164a225a24c1374d4209fe878d9a7"},"schema_version":"1.0"},"canonical_sha256":"9fe36c76bba1357bc7056234eeba87e19d5c23961f2983032749e40ccf292c90","source":{"kind":"arxiv","id":"1901.04369","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04369","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04369v2","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04369","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"T7RWY5V3UE2X","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"T7RWY5V3UE2XXRYF","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"T7RWY5V3","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:T7RWY5V3UE2XXRYFMI2O5OUH4G","target":"record","payload":{"canonical_record":{"source":{"id":"1901.04369","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-14T16:03:01Z","cross_cats_sorted":[],"title_canon_sha256":"6b1dc78ecae26fe8e28f3c885b3bd3472fc5362cf8c9e6c33ae135312ce660fc","abstract_canon_sha256":"6ce4f81dc4a9e4e1a73263713422dce889d164a225a24c1374d4209fe878d9a7"},"schema_version":"1.0"},"canonical_sha256":"9fe36c76bba1357bc7056234eeba87e19d5c23961f2983032749e40ccf292c90","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:02.274203Z","signature_b64":"YrnAeZxT289iVonvUGStErIkQKbbse5zSN6DLb0OR1ZmYx1jbllbXm1JKR2Bkoo4Sm0ssu6RlijrvHdMcOR4AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9fe36c76bba1357bc7056234eeba87e19d5c23961f2983032749e40ccf292c90","last_reissued_at":"2026-05-17T23:49:02.273745Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:02.273745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.04369","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NCWxmpABGsTdQofmqE0aVxMSkmqzicz1gcsLyz1AeC69SzQeBIrznV/iMHrHtZEMF0e4u1EM9mqt47f2BYM9Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T01:45:42.124652Z"},"content_sha256":"cabd837dbdc39d161c918e685da5a427c0ce1c1571d3c8310553bdb676c3db59","schema_version":"1.0","event_id":"sha256:cabd837dbdc39d161c918e685da5a427c0ce1c1571d3c8310553bdb676c3db59"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:T7RWY5V3UE2XXRYFMI2O5OUH4G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hydrogen and the Abundances of Elements in Impulsive Solar Energetic-Particle Events","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Donald V. Reames","submitted_at":"2019-01-14T16:03:01Z","abstract_excerpt":"Hydrogen has been almost completely ignored in studies of the abundance patterns of the chemical elements in solar energetic particles (SEPs). We seek to find impulsive events where H fits these abundance patterns and document the events that do not, suggesting possible reasons for the disparity. For 24 % of the smaller impulsive SEP events, the relative abundance of H fits within one standard deviation of the power-law fit of the abundances of elements 6 <= Z <= 56, relative to coronal abundances. In impulsive events with high intensities, H can be 10 to 100 times its expected value. In a few"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04369","kind":"arxiv","version":2},"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":"2026-05-17T23:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jfk1t6HSPsWSKaERM68VLIvudp7p9WRah4GIX/uzMVHlC/z/JDsZvzIG+dUaN4AqtfSy9gcfeiUid+49yJ45Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T01:45:42.125004Z"},"content_sha256":"30aba8efdab6acd30570dee9795f32dce5a68594e5607179cbf1c908927153ee","schema_version":"1.0","event_id":"sha256:30aba8efdab6acd30570dee9795f32dce5a68594e5607179cbf1c908927153ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T7RWY5V3UE2XXRYFMI2O5OUH4G/bundle.json","state_url":"https://pith.science/pith/T7RWY5V3UE2XXRYFMI2O5OUH4G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T7RWY5V3UE2XXRYFMI2O5OUH4G/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":"2026-06-12T01:45:42Z","links":{"resolver":"https://pith.science/pith/T7RWY5V3UE2XXRYFMI2O5OUH4G","bundle":"https://pith.science/pith/T7RWY5V3UE2XXRYFMI2O5OUH4G/bundle.json","state":"https://pith.science/pith/T7RWY5V3UE2XXRYFMI2O5OUH4G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T7RWY5V3UE2XXRYFMI2O5OUH4G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:T7RWY5V3UE2XXRYFMI2O5OUH4G","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":"6ce4f81dc4a9e4e1a73263713422dce889d164a225a24c1374d4209fe878d9a7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-14T16:03:01Z","title_canon_sha256":"6b1dc78ecae26fe8e28f3c885b3bd3472fc5362cf8c9e6c33ae135312ce660fc"},"schema_version":"1.0","source":{"id":"1901.04369","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04369","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04369v2","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04369","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"T7RWY5V3UE2X","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"T7RWY5V3UE2XXRYF","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"T7RWY5V3","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:30aba8efdab6acd30570dee9795f32dce5a68594e5607179cbf1c908927153ee","target":"graph","created_at":"2026-05-17T23:49:02Z","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":"Hydrogen has been almost completely ignored in studies of the abundance patterns of the chemical elements in solar energetic particles (SEPs). We seek to find impulsive events where H fits these abundance patterns and document the events that do not, suggesting possible reasons for the disparity. For 24 % of the smaller impulsive SEP events, the relative abundance of H fits within one standard deviation of the power-law fit of the abundances of elements 6 <= Z <= 56, relative to coronal abundances. In impulsive events with high intensities, H can be 10 to 100 times its expected value. In a few","authors_text":"Donald V. Reames","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-14T16:03:01Z","title":"Hydrogen and the Abundances of Elements in Impulsive Solar Energetic-Particle Events"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04369","kind":"arxiv","version":2},"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:cabd837dbdc39d161c918e685da5a427c0ce1c1571d3c8310553bdb676c3db59","target":"record","created_at":"2026-05-17T23:49:02Z","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":"6ce4f81dc4a9e4e1a73263713422dce889d164a225a24c1374d4209fe878d9a7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-01-14T16:03:01Z","title_canon_sha256":"6b1dc78ecae26fe8e28f3c885b3bd3472fc5362cf8c9e6c33ae135312ce660fc"},"schema_version":"1.0","source":{"id":"1901.04369","kind":"arxiv","version":2}},"canonical_sha256":"9fe36c76bba1357bc7056234eeba87e19d5c23961f2983032749e40ccf292c90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fe36c76bba1357bc7056234eeba87e19d5c23961f2983032749e40ccf292c90","first_computed_at":"2026-05-17T23:49:02.273745Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:02.273745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YrnAeZxT289iVonvUGStErIkQKbbse5zSN6DLb0OR1ZmYx1jbllbXm1JKR2Bkoo4Sm0ssu6RlijrvHdMcOR4AQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:02.274203Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.04369","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cabd837dbdc39d161c918e685da5a427c0ce1c1571d3c8310553bdb676c3db59","sha256:30aba8efdab6acd30570dee9795f32dce5a68594e5607179cbf1c908927153ee"],"state_sha256":"f355dfc85bf854509cffdf18b25444634f2f060819593f085cea878a1e39f7bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/40epfegjzntR52gBPB5QiAwjQXcsUQcH5XWiwWHoNPkgbbl9MZrEZCwv0CTo8w87TKzyxYyHpMQasRVRzEjDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T01:45:42.127035Z","bundle_sha256":"e69bd603aec1667557a431c3fae1f185c71071d5be44369290a546170e29cdbc"}}