{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:KVI3K7I6PJAVM2RZHFNDATJYEB","short_pith_number":"pith:KVI3K7I6","canonical_record":{"source":{"id":"1809.10176","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2018-09-26T18:16:45Z","cross_cats_sorted":[],"title_canon_sha256":"eececbed84259fbe3fb988d93260adaff2fed67cc24cecab185a40e2ec2a54b9","abstract_canon_sha256":"f54e01b24232795c4370497b069116d518dd4986c558d82634d517d91d043249"},"schema_version":"1.0"},"canonical_sha256":"5551b57d1e7a41566a39395a304d3820767cccfe0da19ee3e282e3bdeaac770d","source":{"kind":"arxiv","id":"1809.10176","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.10176","created_at":"2026-05-18T00:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"1809.10176v1","created_at":"2026-05-18T00:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.10176","created_at":"2026-05-18T00:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"KVI3K7I6PJAV","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KVI3K7I6PJAVM2RZ","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KVI3K7I6","created_at":"2026-05-18T12:32:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:KVI3K7I6PJAVM2RZHFNDATJYEB","target":"record","payload":{"canonical_record":{"source":{"id":"1809.10176","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2018-09-26T18:16:45Z","cross_cats_sorted":[],"title_canon_sha256":"eececbed84259fbe3fb988d93260adaff2fed67cc24cecab185a40e2ec2a54b9","abstract_canon_sha256":"f54e01b24232795c4370497b069116d518dd4986c558d82634d517d91d043249"},"schema_version":"1.0"},"canonical_sha256":"5551b57d1e7a41566a39395a304d3820767cccfe0da19ee3e282e3bdeaac770d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:38.912693Z","signature_b64":"ZKbT80U5E/ty6Xx2YuRMTN9916ewXHLT1lAeXfkLuOf10tCBI6Imf8UgHezwb2n1cLMLTfC4Pr1F6T2MGC0hCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5551b57d1e7a41566a39395a304d3820767cccfe0da19ee3e282e3bdeaac770d","last_reissued_at":"2026-05-18T00:04:38.912234Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:38.912234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.10176","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":"2026-05-18T00:04:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9xtYyh0Chon+cKqFaRAkF1cgC+TYg9/wu3NYeaPt4FM3n+22I1LdSuEPWf2QDt/0tX/3CHXg0fFXhPZHiCRjDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:25:18.709348Z"},"content_sha256":"5a845654f061b6c00d6a6a5cf012dc0edd24fc457a5f12276ccad604f61bb667","schema_version":"1.0","event_id":"sha256:5a845654f061b6c00d6a6a5cf012dc0edd24fc457a5f12276ccad604f61bb667"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:KVI3K7I6PJAVM2RZHFNDATJYEB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sensitivity study for the $^{12}$C($\\alpha,\\gamma$)$^{16}$O astrophysical reaction rate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"B. W. Filippone, R. J. Holt, Steven C. Pieper","submitted_at":"2018-09-26T18:16:45Z","abstract_excerpt":"The $^{12}$C($\\alpha,\\gamma$)$^{16}$O reaction has a key role in nuclear astrophysics. A multilevel R-matrix analysis was used to make extrapolations of the astrophysical S factor for this reaction to the stellar energy of 300 keV. The statistical precision of the S-factor extrapolation was determined by performing multiple fits to existing randomized E1 and E2 ground state data, according to experimental errors. The impact of a future proposed experiment at Jefferson Laboratory (JLab) was assessed within this framework. The proposed JLab experiment will make use of a high-intensity low-energy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.10176","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":"2026-05-18T00:04:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Zfsl4DaEQyy7Tb6K3iri+Ai5ONk5scaXoW45lAD0I/u4IM20dWM6Q4bPVOUU8Z7rT5CBCUAGj2KV0b8k1yTCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:25:18.710016Z"},"content_sha256":"dc8605ed160deb245d45836af6483047f24fbb304119ba1080f26306dea76878","schema_version":"1.0","event_id":"sha256:dc8605ed160deb245d45836af6483047f24fbb304119ba1080f26306dea76878"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KVI3K7I6PJAVM2RZHFNDATJYEB/bundle.json","state_url":"https://pith.science/pith/KVI3K7I6PJAVM2RZHFNDATJYEB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KVI3K7I6PJAVM2RZHFNDATJYEB/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":"2026-05-30T20:25:18Z","links":{"resolver":"https://pith.science/pith/KVI3K7I6PJAVM2RZHFNDATJYEB","bundle":"https://pith.science/pith/KVI3K7I6PJAVM2RZHFNDATJYEB/bundle.json","state":"https://pith.science/pith/KVI3K7I6PJAVM2RZHFNDATJYEB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KVI3K7I6PJAVM2RZHFNDATJYEB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:KVI3K7I6PJAVM2RZHFNDATJYEB","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":"f54e01b24232795c4370497b069116d518dd4986c558d82634d517d91d043249","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2018-09-26T18:16:45Z","title_canon_sha256":"eececbed84259fbe3fb988d93260adaff2fed67cc24cecab185a40e2ec2a54b9"},"schema_version":"1.0","source":{"id":"1809.10176","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.10176","created_at":"2026-05-18T00:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"1809.10176v1","created_at":"2026-05-18T00:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.10176","created_at":"2026-05-18T00:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"KVI3K7I6PJAV","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KVI3K7I6PJAVM2RZ","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KVI3K7I6","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:dc8605ed160deb245d45836af6483047f24fbb304119ba1080f26306dea76878","target":"graph","created_at":"2026-05-18T00:04:38Z","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":"The $^{12}$C($\\alpha,\\gamma$)$^{16}$O reaction has a key role in nuclear astrophysics. A multilevel R-matrix analysis was used to make extrapolations of the astrophysical S factor for this reaction to the stellar energy of 300 keV. The statistical precision of the S-factor extrapolation was determined by performing multiple fits to existing randomized E1 and E2 ground state data, according to experimental errors. The impact of a future proposed experiment at Jefferson Laboratory (JLab) was assessed within this framework. The proposed JLab experiment will make use of a high-intensity low-energy","authors_text":"B. W. Filippone, R. J. Holt, Steven C. Pieper","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2018-09-26T18:16:45Z","title":"Sensitivity study for the $^{12}$C($\\alpha,\\gamma$)$^{16}$O astrophysical reaction rate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.10176","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":"sha256:5a845654f061b6c00d6a6a5cf012dc0edd24fc457a5f12276ccad604f61bb667","target":"record","created_at":"2026-05-18T00:04:38Z","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":"f54e01b24232795c4370497b069116d518dd4986c558d82634d517d91d043249","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2018-09-26T18:16:45Z","title_canon_sha256":"eececbed84259fbe3fb988d93260adaff2fed67cc24cecab185a40e2ec2a54b9"},"schema_version":"1.0","source":{"id":"1809.10176","kind":"arxiv","version":1}},"canonical_sha256":"5551b57d1e7a41566a39395a304d3820767cccfe0da19ee3e282e3bdeaac770d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5551b57d1e7a41566a39395a304d3820767cccfe0da19ee3e282e3bdeaac770d","first_computed_at":"2026-05-18T00:04:38.912234Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:38.912234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZKbT80U5E/ty6Xx2YuRMTN9916ewXHLT1lAeXfkLuOf10tCBI6Imf8UgHezwb2n1cLMLTfC4Pr1F6T2MGC0hCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:38.912693Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.10176","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a845654f061b6c00d6a6a5cf012dc0edd24fc457a5f12276ccad604f61bb667","sha256:dc8605ed160deb245d45836af6483047f24fbb304119ba1080f26306dea76878"],"state_sha256":"fd35e9da352e8e926c5efb441c45d053a1fccf750e0694cc77943957cf61b4f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1sXVgIhXbRunI7n9+cHJ0ts51H/TnDAc1TByF7B2qg+cjGFwC/082gASAMRCnNTxh5T1BvdR+tBALKgEQCOABA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T20:25:18.714002Z","bundle_sha256":"023fbb07b55fdc8fcc2b76db57f5d00e0434bf65fee6c72d0cd95e0b488bc0e1"}}