{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:ON5WL7DBCWYL6R27YV7XHFSYJ2","short_pith_number":"pith:ON5WL7DB","canonical_record":{"source":{"id":"1110.2534","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-10-11T23:50:52Z","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"title_canon_sha256":"a759c93285d3f56552928a8e83cc7aedd9e4b2984199305b64be7a56d26fc85f","abstract_canon_sha256":"1acdde0a5fde0bc361591f64bd4b500a5a41ce51cbf0d0f70b3f91871610aad1"},"schema_version":"1.0"},"canonical_sha256":"737b65fc6115b0bf475fc57f7396584eaed0b5eb8b815a00adcdbd81e0dd78cf","source":{"kind":"arxiv","id":"1110.2534","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.2534","created_at":"2026-05-18T04:11:08Z"},{"alias_kind":"arxiv_version","alias_value":"1110.2534v1","created_at":"2026-05-18T04:11:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.2534","created_at":"2026-05-18T04:11:08Z"},{"alias_kind":"pith_short_12","alias_value":"ON5WL7DBCWYL","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"ON5WL7DBCWYL6R27","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"ON5WL7DB","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:ON5WL7DBCWYL6R27YV7XHFSYJ2","target":"record","payload":{"canonical_record":{"source":{"id":"1110.2534","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-10-11T23:50:52Z","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"title_canon_sha256":"a759c93285d3f56552928a8e83cc7aedd9e4b2984199305b64be7a56d26fc85f","abstract_canon_sha256":"1acdde0a5fde0bc361591f64bd4b500a5a41ce51cbf0d0f70b3f91871610aad1"},"schema_version":"1.0"},"canonical_sha256":"737b65fc6115b0bf475fc57f7396584eaed0b5eb8b815a00adcdbd81e0dd78cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:08.072828Z","signature_b64":"HuXhRCzLSRX8loij5R7aGRxSFc1qaxmzxXsT2kY3N6f3hQM+SYIATQ3oJDne8DBV4Bt9zausJkB0jqP2nke1Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"737b65fc6115b0bf475fc57f7396584eaed0b5eb8b815a00adcdbd81e0dd78cf","last_reissued_at":"2026-05-18T04:11:08.072305Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:08.072305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.2534","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":"2026-05-18T04:11:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WroR8C5aF/admAzraOvhlsgCWk3D760J5nRB9JHua8Ag5vs5vg8yBrw7cGcg+ygSQtYbNGtr/NJ0Q7Qn0AeLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T05:12:59.831114Z"},"content_sha256":"a3efabaa935d2df40896f3565a2ac5884c58b910ff9e0792348374e7d446a124","schema_version":"1.0","event_id":"sha256:a3efabaa935d2df40896f3565a2ac5884c58b910ff9e0792348374e7d446a124"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:ON5WL7DBCWYL6R27YV7XHFSYJ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nuclear physics in the cosmos","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","nucl-ex"],"primary_cat":"nucl-th","authors_text":"C.A. Bertulani","submitted_at":"2011-10-11T23:50:52Z","abstract_excerpt":"We observe photons and neutrinos from stars. Based on these observations, complemented by measurements of cosmic rays energies and composition, we have been able to constrain several models for the Big Bang and for stellar evolution. But that is not enough. We also need to help this effort with laboratory experiments. We are still far from being able to reproduce stellar environments in a terrestrial laboratory. But in many cases we can obtain accurate nuclear reaction rates needed for modeling primordial nucleosynthesis and hydrostatic burning in stars. The relevant reactions are difficult to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.2534","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":"2026-05-18T04:11:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9pTebGMDL15MZ5cc/aeXW69XO3T3fAZChRf31Ie01rRWWfw0HFXOnlOo0TUgLr+NIoR5wBZLd0MqmfUqibT6AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T05:12:59.831872Z"},"content_sha256":"0a7ec915606eb21dc92003c521a90161cc58d1afdbfb0727171deb6f1d525fb2","schema_version":"1.0","event_id":"sha256:0a7ec915606eb21dc92003c521a90161cc58d1afdbfb0727171deb6f1d525fb2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ON5WL7DBCWYL6R27YV7XHFSYJ2/bundle.json","state_url":"https://pith.science/pith/ON5WL7DBCWYL6R27YV7XHFSYJ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ON5WL7DBCWYL6R27YV7XHFSYJ2/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":"2026-06-08T05:12:59Z","links":{"resolver":"https://pith.science/pith/ON5WL7DBCWYL6R27YV7XHFSYJ2","bundle":"https://pith.science/pith/ON5WL7DBCWYL6R27YV7XHFSYJ2/bundle.json","state":"https://pith.science/pith/ON5WL7DBCWYL6R27YV7XHFSYJ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ON5WL7DBCWYL6R27YV7XHFSYJ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:ON5WL7DBCWYL6R27YV7XHFSYJ2","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":"1acdde0a5fde0bc361591f64bd4b500a5a41ce51cbf0d0f70b3f91871610aad1","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-10-11T23:50:52Z","title_canon_sha256":"a759c93285d3f56552928a8e83cc7aedd9e4b2984199305b64be7a56d26fc85f"},"schema_version":"1.0","source":{"id":"1110.2534","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.2534","created_at":"2026-05-18T04:11:08Z"},{"alias_kind":"arxiv_version","alias_value":"1110.2534v1","created_at":"2026-05-18T04:11:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.2534","created_at":"2026-05-18T04:11:08Z"},{"alias_kind":"pith_short_12","alias_value":"ON5WL7DBCWYL","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"ON5WL7DBCWYL6R27","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"ON5WL7DB","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:0a7ec915606eb21dc92003c521a90161cc58d1afdbfb0727171deb6f1d525fb2","target":"graph","created_at":"2026-05-18T04:11:08Z","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 observe photons and neutrinos from stars. Based on these observations, complemented by measurements of cosmic rays energies and composition, we have been able to constrain several models for the Big Bang and for stellar evolution. But that is not enough. We also need to help this effort with laboratory experiments. We are still far from being able to reproduce stellar environments in a terrestrial laboratory. But in many cases we can obtain accurate nuclear reaction rates needed for modeling primordial nucleosynthesis and hydrostatic burning in stars. The relevant reactions are difficult to","authors_text":"C.A. Bertulani","cross_cats":["astro-ph.SR","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-10-11T23:50:52Z","title":"Nuclear physics in the cosmos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.2534","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:a3efabaa935d2df40896f3565a2ac5884c58b910ff9e0792348374e7d446a124","target":"record","created_at":"2026-05-18T04:11:08Z","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":"1acdde0a5fde0bc361591f64bd4b500a5a41ce51cbf0d0f70b3f91871610aad1","cross_cats_sorted":["astro-ph.SR","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-10-11T23:50:52Z","title_canon_sha256":"a759c93285d3f56552928a8e83cc7aedd9e4b2984199305b64be7a56d26fc85f"},"schema_version":"1.0","source":{"id":"1110.2534","kind":"arxiv","version":1}},"canonical_sha256":"737b65fc6115b0bf475fc57f7396584eaed0b5eb8b815a00adcdbd81e0dd78cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"737b65fc6115b0bf475fc57f7396584eaed0b5eb8b815a00adcdbd81e0dd78cf","first_computed_at":"2026-05-18T04:11:08.072305Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:11:08.072305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HuXhRCzLSRX8loij5R7aGRxSFc1qaxmzxXsT2kY3N6f3hQM+SYIATQ3oJDne8DBV4Bt9zausJkB0jqP2nke1Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:11:08.072828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.2534","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a3efabaa935d2df40896f3565a2ac5884c58b910ff9e0792348374e7d446a124","sha256:0a7ec915606eb21dc92003c521a90161cc58d1afdbfb0727171deb6f1d525fb2"],"state_sha256":"65e9f3d6d101513b0a4cbef61b33023097d8f619eef3d11f8ab585ea97911e8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WphEkRs3n+skTjdRifMtbLSHu0lB+1plwwdMGbDsMWhh638eaR/vXU8hsQvxIAG9ng2BJnaC/+umMX3lTddiAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T05:12:59.835594Z","bundle_sha256":"511cddcf671ec092b83c25ce95ffff9b27e0a03e0c5ea4e3bdef30c8ce79a44a"}}