{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:P6HR336CGYLYU2YVHW3AXBMCJX","short_pith_number":"pith:P6HR336C","canonical_record":{"source":{"id":"1903.07760","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-18T23:18:08Z","cross_cats_sorted":[],"title_canon_sha256":"d48fdf64a014d0b487d87a845e53fd143241091f4fa62cac05b28cedb47ce203","abstract_canon_sha256":"41666f03281813db3b71cbf47528d032bcc528e5eec5ca7e9d94eb508327086a"},"schema_version":"1.0"},"canonical_sha256":"7f8f1defc236178a6b153db60b85824dc90ad74ab5093561a09022561f441d65","source":{"kind":"arxiv","id":"1903.07760","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.07760","created_at":"2026-05-17T23:50:54Z"},{"alias_kind":"arxiv_version","alias_value":"1903.07760v1","created_at":"2026-05-17T23:50:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.07760","created_at":"2026-05-17T23:50:54Z"},{"alias_kind":"pith_short_12","alias_value":"P6HR336CGYLY","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"P6HR336CGYLYU2YV","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"P6HR336C","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:P6HR336CGYLYU2YVHW3AXBMCJX","target":"record","payload":{"canonical_record":{"source":{"id":"1903.07760","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-18T23:18:08Z","cross_cats_sorted":[],"title_canon_sha256":"d48fdf64a014d0b487d87a845e53fd143241091f4fa62cac05b28cedb47ce203","abstract_canon_sha256":"41666f03281813db3b71cbf47528d032bcc528e5eec5ca7e9d94eb508327086a"},"schema_version":"1.0"},"canonical_sha256":"7f8f1defc236178a6b153db60b85824dc90ad74ab5093561a09022561f441d65","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:54.048666Z","signature_b64":"/OWlDq8cy/BXR/q8untzwtkyrTjvzPKF+rVPWou4Jr1gedoqcbp6TAorQ8hWx94soD4fojRAygsmMWDOxrZPBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f8f1defc236178a6b153db60b85824dc90ad74ab5093561a09022561f441d65","last_reissued_at":"2026-05-17T23:50:54.048063Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:54.048063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.07760","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":"2026-05-17T23:50:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GjyAypX760ps0PiqIyB2hE4D9hemUuaZWlZsBK5PG/ubLcVNvmFxqFbDnAnyXSVSFi04IVtHSsuYlnEMJvh0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:15:56.191903Z"},"content_sha256":"a685f97e7e20d76c4b6c6f361c964b4d5c001712a56275249ba4c1ef2125ae57","schema_version":"1.0","event_id":"sha256:a685f97e7e20d76c4b6c6f361c964b4d5c001712a56275249ba4c1ef2125ae57"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:P6HR336CGYLYU2YVHW3AXBMCJX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Energy Astrophysics in the 2020s and Beyond","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Christopher Reynolds, Gabriela Gonzales, Keith Arnaud, Kristin Madsen (HEAD/AAS Executive Committee), Laura Brenneman, Laura Lopez, Michael Corcoran, Neil Cornish, Niel Brandt, Robert Petre","submitted_at":"2019-03-18T23:18:08Z","abstract_excerpt":"With each passing decade, we gain new appreciation for the dynamic, connected, and often violent nature of the Universe. This reality necessarily places the study of high-energy processes at the very heart of modern astrophysics. This White Paper illustrates the central role of high-energy astrophysics to some of the most pressing astrophysical problems of our time, the formation/evolution of galaxies, the origin of the heavy elements, star and planet formation, the emergence of life on exoplanets, and the search for new physics. We also highlight the new connections that are growing between a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.07760","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":"2026-05-17T23:50:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ffhIlfzZc4cokKVhelTzrt0PGRZZRuhg00pxGAqHMBOj33L1X5AX645bf2g//yahBVG9n9OmUQJbA+NdLxH+Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:15:56.192576Z"},"content_sha256":"db2cbfac234623bd2fec6de06079e6c50d90475ccfdeece829aa5cf5aed8f15a","schema_version":"1.0","event_id":"sha256:db2cbfac234623bd2fec6de06079e6c50d90475ccfdeece829aa5cf5aed8f15a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P6HR336CGYLYU2YVHW3AXBMCJX/bundle.json","state_url":"https://pith.science/pith/P6HR336CGYLYU2YVHW3AXBMCJX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P6HR336CGYLYU2YVHW3AXBMCJX/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":"2026-05-26T03:15:56Z","links":{"resolver":"https://pith.science/pith/P6HR336CGYLYU2YVHW3AXBMCJX","bundle":"https://pith.science/pith/P6HR336CGYLYU2YVHW3AXBMCJX/bundle.json","state":"https://pith.science/pith/P6HR336CGYLYU2YVHW3AXBMCJX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P6HR336CGYLYU2YVHW3AXBMCJX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:P6HR336CGYLYU2YVHW3AXBMCJX","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":"41666f03281813db3b71cbf47528d032bcc528e5eec5ca7e9d94eb508327086a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-18T23:18:08Z","title_canon_sha256":"d48fdf64a014d0b487d87a845e53fd143241091f4fa62cac05b28cedb47ce203"},"schema_version":"1.0","source":{"id":"1903.07760","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.07760","created_at":"2026-05-17T23:50:54Z"},{"alias_kind":"arxiv_version","alias_value":"1903.07760v1","created_at":"2026-05-17T23:50:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.07760","created_at":"2026-05-17T23:50:54Z"},{"alias_kind":"pith_short_12","alias_value":"P6HR336CGYLY","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"P6HR336CGYLYU2YV","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"P6HR336C","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:db2cbfac234623bd2fec6de06079e6c50d90475ccfdeece829aa5cf5aed8f15a","target":"graph","created_at":"2026-05-17T23:50:54Z","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":"With each passing decade, we gain new appreciation for the dynamic, connected, and often violent nature of the Universe. This reality necessarily places the study of high-energy processes at the very heart of modern astrophysics. This White Paper illustrates the central role of high-energy astrophysics to some of the most pressing astrophysical problems of our time, the formation/evolution of galaxies, the origin of the heavy elements, star and planet formation, the emergence of life on exoplanets, and the search for new physics. We also highlight the new connections that are growing between a","authors_text":"Christopher Reynolds, Gabriela Gonzales, Keith Arnaud, Kristin Madsen (HEAD/AAS Executive Committee), Laura Brenneman, Laura Lopez, Michael Corcoran, Neil Cornish, Niel Brandt, Robert Petre","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-18T23:18:08Z","title":"High-Energy Astrophysics in the 2020s and Beyond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.07760","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:a685f97e7e20d76c4b6c6f361c964b4d5c001712a56275249ba4c1ef2125ae57","target":"record","created_at":"2026-05-17T23:50:54Z","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":"41666f03281813db3b71cbf47528d032bcc528e5eec5ca7e9d94eb508327086a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-18T23:18:08Z","title_canon_sha256":"d48fdf64a014d0b487d87a845e53fd143241091f4fa62cac05b28cedb47ce203"},"schema_version":"1.0","source":{"id":"1903.07760","kind":"arxiv","version":1}},"canonical_sha256":"7f8f1defc236178a6b153db60b85824dc90ad74ab5093561a09022561f441d65","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f8f1defc236178a6b153db60b85824dc90ad74ab5093561a09022561f441d65","first_computed_at":"2026-05-17T23:50:54.048063Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:54.048063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/OWlDq8cy/BXR/q8untzwtkyrTjvzPKF+rVPWou4Jr1gedoqcbp6TAorQ8hWx94soD4fojRAygsmMWDOxrZPBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:54.048666Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.07760","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a685f97e7e20d76c4b6c6f361c964b4d5c001712a56275249ba4c1ef2125ae57","sha256:db2cbfac234623bd2fec6de06079e6c50d90475ccfdeece829aa5cf5aed8f15a"],"state_sha256":"80564115e33a551ac091261156a7313465de510c1ab1670cb8b82f098b73b6c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"55GMW9mbvzKVYVb6MhECxYCwT9bJutrrncKV6DGai15sOItcO9cl2jnFQCKLqodstamxdtPyaTfEvWXT+/ckAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:15:56.195343Z","bundle_sha256":"24565ea08d2ff2da7442b0697094cfabb42246c74304aef41189f8a04fa137a4"}}