{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:MRTRIVQ5EN6SQKWGUCM7JDY34Q","short_pith_number":"pith:MRTRIVQ5","canonical_record":{"source":{"id":"2204.11877","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-04-25T18:00:03Z","cross_cats_sorted":["astro-ph.HE","hep-ph"],"title_canon_sha256":"3a4409a09fb264dc9a3457efcdd512c2f6fcffc5c050e86ab2616688ee062cab","abstract_canon_sha256":"e02c18c0aacb0ef9a9f387df16c14ad1c57f33f050a2f977093597049f5b6afb"},"schema_version":"1.0"},"canonical_sha256":"646714561d237d282ac6a099f48f1be4376bd08188592b0f1e8ecfde358a4134","source":{"kind":"arxiv","id":"2204.11877","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.11877","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"arxiv_version","alias_value":"2204.11877v2","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.11877","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"pith_short_12","alias_value":"MRTRIVQ5EN6S","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"pith_short_16","alias_value":"MRTRIVQ5EN6SQKWG","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"pith_short_8","alias_value":"MRTRIVQ5","created_at":"2026-07-05T06:35:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:MRTRIVQ5EN6SQKWGUCM7JDY34Q","target":"record","payload":{"canonical_record":{"source":{"id":"2204.11877","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-04-25T18:00:03Z","cross_cats_sorted":["astro-ph.HE","hep-ph"],"title_canon_sha256":"3a4409a09fb264dc9a3457efcdd512c2f6fcffc5c050e86ab2616688ee062cab","abstract_canon_sha256":"e02c18c0aacb0ef9a9f387df16c14ad1c57f33f050a2f977093597049f5b6afb"},"schema_version":"1.0"},"canonical_sha256":"646714561d237d282ac6a099f48f1be4376bd08188592b0f1e8ecfde358a4134","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:35:23.201290Z","signature_b64":"9tjb6VjBXvQX5hMr5Ar5u0xbQT7fthUXj9iQ4tIMglm01/QcH7JoY61xvoHEfPXpsa/C0pyrK5uvka2euyyoBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"646714561d237d282ac6a099f48f1be4376bd08188592b0f1e8ecfde358a4134","last_reissued_at":"2026-07-05T06:35:23.200899Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:35:23.200899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2204.11877","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:35:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9teBA2Aeu8RDlN1BWt/FhtqCA48bs8pQfFptMvGitF0ePn9AgASBGR1NbE5WS0Ypu115G197mU6lyc+ofeHFAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T10:14:00.574056Z"},"content_sha256":"fa56e6fa46461573872c9c45c726fb660847dc523ff1c06afc970a42bc6b54b2","schema_version":"1.0","event_id":"sha256:fa56e6fa46461573872c9c45c726fb660847dc523ff1c06afc970a42bc6b54b2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:MRTRIVQ5EN6SQKWGUCM7JDY34Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ab-initio QCD calculations impact the inference of the neutron-star-matter equation of state","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","hep-ph"],"primary_cat":"nucl-th","authors_text":"Aleksi Kurkela, Oleg Komoltsev, Tyler Gorda","submitted_at":"2022-04-25T18:00:03Z","abstract_excerpt":"We demonstrate that ab-initio calculations in QCD at high densities offer significant and nontrivial information about the equation of state of matter in the cores of neutron stars, going beyond that which is obtainable from current astrophysical observations. We do so by extrapolating the equation of state to neutron-star densities using a Gaussian process and conditioning it sequentially with astrophysical observations and QCD input. Using our recent work, imposing the latter does not require an extrapolation to asymptotically high density. We find the QCD input to be complementary to the as"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.11877","kind":"arxiv","version":2},"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/2204.11877/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":"2026-07-05T06:35:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yEC7SR8oE6vuWKhDqMe2a1YGGWsqxhldVe/OV6wN/pIScb4ENMtNmAOL5jvStBhj0jqZeJpjKHhWV6QQkJhYDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T10:14:00.574849Z"},"content_sha256":"2130f10b515008e18529df8076f5194a2275ceb99950f2092765ace26eb76a32","schema_version":"1.0","event_id":"sha256:2130f10b515008e18529df8076f5194a2275ceb99950f2092765ace26eb76a32"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MRTRIVQ5EN6SQKWGUCM7JDY34Q/bundle.json","state_url":"https://pith.science/pith/MRTRIVQ5EN6SQKWGUCM7JDY34Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MRTRIVQ5EN6SQKWGUCM7JDY34Q/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":"2026-08-14T10:14:00Z","links":{"resolver":"https://pith.science/pith/MRTRIVQ5EN6SQKWGUCM7JDY34Q","bundle":"https://pith.science/pith/MRTRIVQ5EN6SQKWGUCM7JDY34Q/bundle.json","state":"https://pith.science/pith/MRTRIVQ5EN6SQKWGUCM7JDY34Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MRTRIVQ5EN6SQKWGUCM7JDY34Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:MRTRIVQ5EN6SQKWGUCM7JDY34Q","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":"e02c18c0aacb0ef9a9f387df16c14ad1c57f33f050a2f977093597049f5b6afb","cross_cats_sorted":["astro-ph.HE","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-04-25T18:00:03Z","title_canon_sha256":"3a4409a09fb264dc9a3457efcdd512c2f6fcffc5c050e86ab2616688ee062cab"},"schema_version":"1.0","source":{"id":"2204.11877","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2204.11877","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"arxiv_version","alias_value":"2204.11877v2","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.11877","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"pith_short_12","alias_value":"MRTRIVQ5EN6S","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"pith_short_16","alias_value":"MRTRIVQ5EN6SQKWG","created_at":"2026-07-05T06:35:23Z"},{"alias_kind":"pith_short_8","alias_value":"MRTRIVQ5","created_at":"2026-07-05T06:35:23Z"}],"graph_snapshots":[{"event_id":"sha256:2130f10b515008e18529df8076f5194a2275ceb99950f2092765ace26eb76a32","target":"graph","created_at":"2026-07-05T06:35:23Z","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/2204.11877/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate that ab-initio calculations in QCD at high densities offer significant and nontrivial information about the equation of state of matter in the cores of neutron stars, going beyond that which is obtainable from current astrophysical observations. We do so by extrapolating the equation of state to neutron-star densities using a Gaussian process and conditioning it sequentially with astrophysical observations and QCD input. Using our recent work, imposing the latter does not require an extrapolation to asymptotically high density. We find the QCD input to be complementary to the as","authors_text":"Aleksi Kurkela, Oleg Komoltsev, Tyler Gorda","cross_cats":["astro-ph.HE","hep-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-04-25T18:00:03Z","title":"Ab-initio QCD calculations impact the inference of the neutron-star-matter equation of state"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.11877","kind":"arxiv","version":2},"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:fa56e6fa46461573872c9c45c726fb660847dc523ff1c06afc970a42bc6b54b2","target":"record","created_at":"2026-07-05T06:35:23Z","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":"e02c18c0aacb0ef9a9f387df16c14ad1c57f33f050a2f977093597049f5b6afb","cross_cats_sorted":["astro-ph.HE","hep-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-th","submitted_at":"2022-04-25T18:00:03Z","title_canon_sha256":"3a4409a09fb264dc9a3457efcdd512c2f6fcffc5c050e86ab2616688ee062cab"},"schema_version":"1.0","source":{"id":"2204.11877","kind":"arxiv","version":2}},"canonical_sha256":"646714561d237d282ac6a099f48f1be4376bd08188592b0f1e8ecfde358a4134","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"646714561d237d282ac6a099f48f1be4376bd08188592b0f1e8ecfde358a4134","first_computed_at":"2026-07-05T06:35:23.200899Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:35:23.200899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9tjb6VjBXvQX5hMr5Ar5u0xbQT7fthUXj9iQ4tIMglm01/QcH7JoY61xvoHEfPXpsa/C0pyrK5uvka2euyyoBg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:35:23.201290Z","signed_message":"canonical_sha256_bytes"},"source_id":"2204.11877","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa56e6fa46461573872c9c45c726fb660847dc523ff1c06afc970a42bc6b54b2","sha256:2130f10b515008e18529df8076f5194a2275ceb99950f2092765ace26eb76a32"],"state_sha256":"1ac08067400a108d64b0713a99f974971fe2d96658206a1aab92df80146722ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xOo0EXwDTdM/oddFiua3RrpA63tl7k5t/R/HFywnzOcdAoIGHjtN2PaoedhNU/p/mO9VE23f04uTmZkQUWfNBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T10:14:00.581870Z","bundle_sha256":"2581cc0023a61152e6f688c6eb256bb50d0435a01243f8afc55401077927b8ce"}}