{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:CZAF2WN2MSRU7EV4RCCJVYJUAM","short_pith_number":"pith:CZAF2WN2","canonical_record":{"source":{"id":"1905.02120","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-06T16:13:33Z","cross_cats_sorted":[],"title_canon_sha256":"fe23928f74386ae6a596f44c1353645724bc919d18fa22eb2fed2d6e06aa90ff","abstract_canon_sha256":"fc92fd14e2381e11111fc8749c0df6dd37d0d548905aa39f4801bae14265e775"},"schema_version":"1.0"},"canonical_sha256":"16405d59ba64a34f92bc88849ae1340330d2d3415c24dd01b1956358f4b7330f","source":{"kind":"arxiv","id":"1905.02120","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.02120","created_at":"2026-05-17T23:46:56Z"},{"alias_kind":"arxiv_version","alias_value":"1905.02120v1","created_at":"2026-05-17T23:46:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.02120","created_at":"2026-05-17T23:46:56Z"},{"alias_kind":"pith_short_12","alias_value":"CZAF2WN2MSRU","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"CZAF2WN2MSRU7EV4","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"CZAF2WN2","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:CZAF2WN2MSRU7EV4RCCJVYJUAM","target":"record","payload":{"canonical_record":{"source":{"id":"1905.02120","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-06T16:13:33Z","cross_cats_sorted":[],"title_canon_sha256":"fe23928f74386ae6a596f44c1353645724bc919d18fa22eb2fed2d6e06aa90ff","abstract_canon_sha256":"fc92fd14e2381e11111fc8749c0df6dd37d0d548905aa39f4801bae14265e775"},"schema_version":"1.0"},"canonical_sha256":"16405d59ba64a34f92bc88849ae1340330d2d3415c24dd01b1956358f4b7330f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:56.306111Z","signature_b64":"Cs2zzzK4sGBG97pEgaWhsA8DjDBfUaXGLz4/5FobdSrlVTV+ZQe5GRt5RuA+lk7Hw5QonZhSApaYayR/sd/NBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16405d59ba64a34f92bc88849ae1340330d2d3415c24dd01b1956358f4b7330f","last_reissued_at":"2026-05-17T23:46:56.305427Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:56.305427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.02120","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":"2026-05-17T23:46:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0qFNsIILZJwMuX3v4heE9Ce6fZQkUF6OrlHEEyVIRPtMu3UhmvoFf3Z8tq7Co/WB+1j0qSaviX7T/6UzDfMkCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T21:34:16.898625Z"},"content_sha256":"bf2d905a74f8d5d175722e58592a067fee4ca7eaacad59fd2305634b138330b5","schema_version":"1.0","event_id":"sha256:bf2d905a74f8d5d175722e58592a067fee4ca7eaacad59fd2305634b138330b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:CZAF2WN2MSRU7EV4RCCJVYJUAM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low-frequency gravity waves in blue supergiants revealed by high-precision space photometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Andrew Tkachenko, Benjamin J. S. Pope, Bram Buysschaert, Cole Johnston, Conny Aerts, Dominic M. Bowman, Ehsan Moravveji, Mathias Michielsen, May G. Pedersen, Norberto Castro, Peter De Cat, Philipp V. F. Edelmann, Rathish P. Ratnasingam, Sergio Sim\\'on-D\\'iaz, Siemen Burssens, Tamara M. Rogers, Timothy R. White","submitted_at":"2019-05-06T16:13:33Z","abstract_excerpt":"Almost all massive stars explode as supernovae and form a black hole or neutron star. The remnant mass and the impact of the chemical yield on subsequent star formation and galactic evolution strongly depend on the internal physics of the progenitor star, which is currently not well understood. The theoretical uncertainties of stellar interiors accumulate with stellar age, which is particularly pertinent for the blue supergiant phase. Stellar oscillations represent a unique method of probing stellar interiors, yet inference for blue supergiants is hampered by a dearth of observed pulsation mod"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.02120","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":"2026-05-17T23:46:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ypG9PXknGp3a1lCrUYZKL6+YbA3tiikIIOaDJiYdudZCWrMgZSRMS/TE085DaTBzjcyG9nJ2QZdrqIsie9EAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T21:34:16.899279Z"},"content_sha256":"b84b2122afa73a8f9365ed56988f45ddd44a9c79ebe40909c2fd1c0b5d417a27","schema_version":"1.0","event_id":"sha256:b84b2122afa73a8f9365ed56988f45ddd44a9c79ebe40909c2fd1c0b5d417a27"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CZAF2WN2MSRU7EV4RCCJVYJUAM/bundle.json","state_url":"https://pith.science/pith/CZAF2WN2MSRU7EV4RCCJVYJUAM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CZAF2WN2MSRU7EV4RCCJVYJUAM/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":"2026-05-18T21:34:16Z","links":{"resolver":"https://pith.science/pith/CZAF2WN2MSRU7EV4RCCJVYJUAM","bundle":"https://pith.science/pith/CZAF2WN2MSRU7EV4RCCJVYJUAM/bundle.json","state":"https://pith.science/pith/CZAF2WN2MSRU7EV4RCCJVYJUAM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CZAF2WN2MSRU7EV4RCCJVYJUAM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:CZAF2WN2MSRU7EV4RCCJVYJUAM","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":"fc92fd14e2381e11111fc8749c0df6dd37d0d548905aa39f4801bae14265e775","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-06T16:13:33Z","title_canon_sha256":"fe23928f74386ae6a596f44c1353645724bc919d18fa22eb2fed2d6e06aa90ff"},"schema_version":"1.0","source":{"id":"1905.02120","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.02120","created_at":"2026-05-17T23:46:56Z"},{"alias_kind":"arxiv_version","alias_value":"1905.02120v1","created_at":"2026-05-17T23:46:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.02120","created_at":"2026-05-17T23:46:56Z"},{"alias_kind":"pith_short_12","alias_value":"CZAF2WN2MSRU","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"CZAF2WN2MSRU7EV4","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"CZAF2WN2","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:b84b2122afa73a8f9365ed56988f45ddd44a9c79ebe40909c2fd1c0b5d417a27","target":"graph","created_at":"2026-05-17T23:46:56Z","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":"Almost all massive stars explode as supernovae and form a black hole or neutron star. The remnant mass and the impact of the chemical yield on subsequent star formation and galactic evolution strongly depend on the internal physics of the progenitor star, which is currently not well understood. The theoretical uncertainties of stellar interiors accumulate with stellar age, which is particularly pertinent for the blue supergiant phase. Stellar oscillations represent a unique method of probing stellar interiors, yet inference for blue supergiants is hampered by a dearth of observed pulsation mod","authors_text":"Andrew Tkachenko, Benjamin J. S. Pope, Bram Buysschaert, Cole Johnston, Conny Aerts, Dominic M. Bowman, Ehsan Moravveji, Mathias Michielsen, May G. Pedersen, Norberto Castro, Peter De Cat, Philipp V. F. Edelmann, Rathish P. Ratnasingam, Sergio Sim\\'on-D\\'iaz, Siemen Burssens, Tamara M. Rogers, Timothy R. White","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-06T16:13:33Z","title":"Low-frequency gravity waves in blue supergiants revealed by high-precision space photometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.02120","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:bf2d905a74f8d5d175722e58592a067fee4ca7eaacad59fd2305634b138330b5","target":"record","created_at":"2026-05-17T23:46:56Z","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":"fc92fd14e2381e11111fc8749c0df6dd37d0d548905aa39f4801bae14265e775","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-05-06T16:13:33Z","title_canon_sha256":"fe23928f74386ae6a596f44c1353645724bc919d18fa22eb2fed2d6e06aa90ff"},"schema_version":"1.0","source":{"id":"1905.02120","kind":"arxiv","version":1}},"canonical_sha256":"16405d59ba64a34f92bc88849ae1340330d2d3415c24dd01b1956358f4b7330f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16405d59ba64a34f92bc88849ae1340330d2d3415c24dd01b1956358f4b7330f","first_computed_at":"2026-05-17T23:46:56.305427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:56.305427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Cs2zzzK4sGBG97pEgaWhsA8DjDBfUaXGLz4/5FobdSrlVTV+ZQe5GRt5RuA+lk7Hw5QonZhSApaYayR/sd/NBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:56.306111Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.02120","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf2d905a74f8d5d175722e58592a067fee4ca7eaacad59fd2305634b138330b5","sha256:b84b2122afa73a8f9365ed56988f45ddd44a9c79ebe40909c2fd1c0b5d417a27"],"state_sha256":"84bb0a9974f970e8c1e66158cf77d8b39d1a49e09000e49e373a7205efa9ebda"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hdrE8av7uhWHm285/guCPyhm67HNFTga8qCZ+d146MrkhR6KKn73KZKcDWILT1GJLAbFwjR6bDpRGx8DJBU8Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T21:34:16.901357Z","bundle_sha256":"250f7ccbdbed39703525bbcc1d953a7a08ceee2c97bd3d920c59de3a8c722bb1"}}