{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:BFVP3FL225MMRGUSV5YTDSXEKN","short_pith_number":"pith:BFVP3FL2","canonical_record":{"source":{"id":"2305.07442","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-05-09T22:38:34Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"52d7669bf7ac4ddf8fb4dcc189d75d76fbb323a5f99daf48395e6949dfe8288f","abstract_canon_sha256":"cef4157b58bd0c584f2c68e9396c366c049c1ff755438d811d0d25f8e912cd66"},"schema_version":"1.0"},"canonical_sha256":"096afd957ad758c89a92af7131cae4537d577de93e35da79302b5318f92eb813","source":{"kind":"arxiv","id":"2305.07442","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.07442","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"arxiv_version","alias_value":"2305.07442v4","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.07442","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"pith_short_12","alias_value":"BFVP3FL225MM","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"pith_short_16","alias_value":"BFVP3FL225MMRGUS","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"pith_short_8","alias_value":"BFVP3FL2","created_at":"2026-07-05T07:43:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:BFVP3FL225MMRGUSV5YTDSXEKN","target":"record","payload":{"canonical_record":{"source":{"id":"2305.07442","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-05-09T22:38:34Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"52d7669bf7ac4ddf8fb4dcc189d75d76fbb323a5f99daf48395e6949dfe8288f","abstract_canon_sha256":"cef4157b58bd0c584f2c68e9396c366c049c1ff755438d811d0d25f8e912cd66"},"schema_version":"1.0"},"canonical_sha256":"096afd957ad758c89a92af7131cae4537d577de93e35da79302b5318f92eb813","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:43:52.618747Z","signature_b64":"Q3r9gmCpbxrYv7h4DcTv09Q7Sz5Gm0Bla19VSHHvUKU/b0jpnb1M12KuLuHKdueafyS/nZRpgXXSFUnfwtK4BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"096afd957ad758c89a92af7131cae4537d577de93e35da79302b5318f92eb813","last_reissued_at":"2026-07-05T07:43:52.618236Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:43:52.618236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.07442","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:43:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XMuO6pHxgtENY+dVzL1WNQGb4CJ5UnCqWu9whjSSwSzw6k5u0ytNkuT5cgXY8/3kkqe1PvW0PkCMHOFFSf83DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:21:20.792779Z"},"content_sha256":"e44d6f42408f4b272bdd0f5533271264d4bbc84b269f2f91a5b4e69c349f760a","schema_version":"1.0","event_id":"sha256:e44d6f42408f4b272bdd0f5533271264d4bbc84b269f2f91a5b4e69c349f760a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:BFVP3FL225MMRGUSV5YTDSXEKN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deducing Neutron Star Equation of State from Telescope Spectra with Machine-learning-derived Likelihoods","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"Aishik Ghosh, Andrew W. Steiner, Atharva Kavitkar, Daniel Whiteson, Delaney Farrell, Fridolin Weber, Jordan Ott, Lee Lindblom, Pierre Baldi","submitted_at":"2023-05-09T22:38:34Z","abstract_excerpt":"The interiors of neutron stars reach densities and temperatures beyond the limits of terrestrial experiments, providing vital laboratories for probing nuclear physics. While the star's interior is not directly observable, its pressure and density determine the star's macroscopic structure which affects the spectra observed in telescopes. The relationship between the observations and the internal state is complex and partially intractable, presenting difficulties for inference. Previous work has focused on the regression from stellar spectra of parameters describing the internal state. We demon"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.07442","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2305.07442/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T07:43:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Z4pq1h7NUE/BiQahDYqih17Rn3WNm7t3Ib77N6PVMJbv/2lebvo/IJPj6QKvHrHrPIZe8HfZI77EK1CfhiNAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T14:21:20.793148Z"},"content_sha256":"ee327679d1fc4340645846a1976687537831ad18f2560309a828caf7c3ba6825","schema_version":"1.0","event_id":"sha256:ee327679d1fc4340645846a1976687537831ad18f2560309a828caf7c3ba6825"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BFVP3FL225MMRGUSV5YTDSXEKN/bundle.json","state_url":"https://pith.science/pith/BFVP3FL225MMRGUSV5YTDSXEKN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BFVP3FL225MMRGUSV5YTDSXEKN/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":"2026-07-07T14:21:20Z","links":{"resolver":"https://pith.science/pith/BFVP3FL225MMRGUSV5YTDSXEKN","bundle":"https://pith.science/pith/BFVP3FL225MMRGUSV5YTDSXEKN/bundle.json","state":"https://pith.science/pith/BFVP3FL225MMRGUSV5YTDSXEKN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BFVP3FL225MMRGUSV5YTDSXEKN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:BFVP3FL225MMRGUSV5YTDSXEKN","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":"cef4157b58bd0c584f2c68e9396c366c049c1ff755438d811d0d25f8e912cd66","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-05-09T22:38:34Z","title_canon_sha256":"52d7669bf7ac4ddf8fb4dcc189d75d76fbb323a5f99daf48395e6949dfe8288f"},"schema_version":"1.0","source":{"id":"2305.07442","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.07442","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"arxiv_version","alias_value":"2305.07442v4","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.07442","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"pith_short_12","alias_value":"BFVP3FL225MM","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"pith_short_16","alias_value":"BFVP3FL225MMRGUS","created_at":"2026-07-05T07:43:52Z"},{"alias_kind":"pith_short_8","alias_value":"BFVP3FL2","created_at":"2026-07-05T07:43:52Z"}],"graph_snapshots":[{"event_id":"sha256:ee327679d1fc4340645846a1976687537831ad18f2560309a828caf7c3ba6825","target":"graph","created_at":"2026-07-05T07:43:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2305.07442/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The interiors of neutron stars reach densities and temperatures beyond the limits of terrestrial experiments, providing vital laboratories for probing nuclear physics. While the star's interior is not directly observable, its pressure and density determine the star's macroscopic structure which affects the spectra observed in telescopes. The relationship between the observations and the internal state is complex and partially intractable, presenting difficulties for inference. Previous work has focused on the regression from stellar spectra of parameters describing the internal state. We demon","authors_text":"Aishik Ghosh, Andrew W. Steiner, Atharva Kavitkar, Daniel Whiteson, Delaney Farrell, Fridolin Weber, Jordan Ott, Lee Lindblom, Pierre Baldi","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-05-09T22:38:34Z","title":"Deducing Neutron Star Equation of State from Telescope Spectra with Machine-learning-derived Likelihoods"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.07442","kind":"arxiv","version":4},"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:e44d6f42408f4b272bdd0f5533271264d4bbc84b269f2f91a5b4e69c349f760a","target":"record","created_at":"2026-07-05T07:43:52Z","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":"cef4157b58bd0c584f2c68e9396c366c049c1ff755438d811d0d25f8e912cd66","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-05-09T22:38:34Z","title_canon_sha256":"52d7669bf7ac4ddf8fb4dcc189d75d76fbb323a5f99daf48395e6949dfe8288f"},"schema_version":"1.0","source":{"id":"2305.07442","kind":"arxiv","version":4}},"canonical_sha256":"096afd957ad758c89a92af7131cae4537d577de93e35da79302b5318f92eb813","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"096afd957ad758c89a92af7131cae4537d577de93e35da79302b5318f92eb813","first_computed_at":"2026-07-05T07:43:52.618236Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:43:52.618236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q3r9gmCpbxrYv7h4DcTv09Q7Sz5Gm0Bla19VSHHvUKU/b0jpnb1M12KuLuHKdueafyS/nZRpgXXSFUnfwtK4BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:43:52.618747Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.07442","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e44d6f42408f4b272bdd0f5533271264d4bbc84b269f2f91a5b4e69c349f760a","sha256:ee327679d1fc4340645846a1976687537831ad18f2560309a828caf7c3ba6825"],"state_sha256":"3d5edfcc0885d9128300dab0b29cf2d236e9f420c03e91a0469e080354ef65eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P3lUztAlRSn1OV/FtQ0quQzd2BE6a9iBkzSnkwYx5WvEa1G74cyBThMbM8kcAmsaiRqD5qsrGRD3H0hl06G5Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T14:21:20.795280Z","bundle_sha256":"baf00e8a091f249adb94f116e75f3341d1cbd883dccc684ec4cea1b72221076f"}}