{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:O4W5PM3ZCWXAA57X3R3ZWGT2J7","short_pith_number":"pith:O4W5PM3Z","canonical_record":{"source":{"id":"2011.10940","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-11-22T05:25:28Z","cross_cats_sorted":["astro-ph.HE","hep-ph","nucl-ex"],"title_canon_sha256":"bbaa61f406706c90eee33c7baf0b31b46730e7707fdede7159aa31cd4b08dc43","abstract_canon_sha256":"7d5292abbdc7f52e1ec31841b7a0d6f7242397d4800abcbbe3fc7518ed426d45"},"schema_version":"1.0"},"canonical_sha256":"772dd7b37915ae0077f7dc779b1a7a4ff3fdd4ca9524d527c5c754acc6d3e1be","source":{"kind":"arxiv","id":"2011.10940","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.10940","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"arxiv_version","alias_value":"2011.10940v2","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.10940","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"pith_short_12","alias_value":"O4W5PM3ZCWXA","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"pith_short_16","alias_value":"O4W5PM3ZCWXAA57X","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"pith_short_8","alias_value":"O4W5PM3Z","created_at":"2026-07-05T02:36:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:O4W5PM3ZCWXAA57X3R3ZWGT2J7","target":"record","payload":{"canonical_record":{"source":{"id":"2011.10940","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-11-22T05:25:28Z","cross_cats_sorted":["astro-ph.HE","hep-ph","nucl-ex"],"title_canon_sha256":"bbaa61f406706c90eee33c7baf0b31b46730e7707fdede7159aa31cd4b08dc43","abstract_canon_sha256":"7d5292abbdc7f52e1ec31841b7a0d6f7242397d4800abcbbe3fc7518ed426d45"},"schema_version":"1.0"},"canonical_sha256":"772dd7b37915ae0077f7dc779b1a7a4ff3fdd4ca9524d527c5c754acc6d3e1be","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:36:31.645400Z","signature_b64":"vr39q3Icc28OCsTksrj8BzUAe7hzTrK4DFaGAY8RIEpEhxXzQYCU0UZT4b1sgcFPR6PALQCtr5+2FhITl36hDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"772dd7b37915ae0077f7dc779b1a7a4ff3fdd4ca9524d527c5c754acc6d3e1be","last_reissued_at":"2026-07-05T02:36:31.644669Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:36:31.644669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.10940","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":"2026-07-05T02:36:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y9BvZBeU67gP8/CKdpydeFetZgvcS8XF6/UhK1Cu+fvhuGyB8JIUKRMgV8S1PYB92DMx8FwUa4IzRmSj4n4dBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:20:03.470044Z"},"content_sha256":"4b0620e0f58775b684b9414e3046323257c41cf78588803b2b089c74f346a6f6","schema_version":"1.0","event_id":"sha256:4b0620e0f58775b684b9414e3046323257c41cf78588803b2b089c74f346a6f6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:O4W5PM3ZCWXAA57X3R3ZWGT2J7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"QCD equations of state and speed of sound in neutron stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Toru Kojo","submitted_at":"2020-11-22T05:25:28Z","abstract_excerpt":"Neutron stars are cosmic laboratories to study dense matter in Quantum Chromodynamics (QCD). The observable mass-radius relations of neutron stars are determined by QCD equations of state, and can reflect the properties of QCD phase transitions. In the last decade there have been historical discoveries in neutron stars, the discoveries of two-solar mass neutron stars and neutron star merger events, which have imposed tight constraints on equations of state. While a number of equations of state are constructed to satisfy these constraints, a theoretical challenge is how to reconcile those const"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.10940","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/2011.10940/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":"2026-07-05T02:36:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ybf28zxGOEpRPQuVGfWzl9bY8NjuPSpKQhwhdX7Pbnz2cjKsJNnzIwGo4kWi0e/nByBI4LqY2gmmQvzINHLEAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:20:03.470955Z"},"content_sha256":"8d36e16bf0b16cd3ea130eb82191b7dc9d686fd7124c269d9b00ce26be0b3dbe","schema_version":"1.0","event_id":"sha256:8d36e16bf0b16cd3ea130eb82191b7dc9d686fd7124c269d9b00ce26be0b3dbe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O4W5PM3ZCWXAA57X3R3ZWGT2J7/bundle.json","state_url":"https://pith.science/pith/O4W5PM3ZCWXAA57X3R3ZWGT2J7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O4W5PM3ZCWXAA57X3R3ZWGT2J7/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":"2026-08-09T21:20:03Z","links":{"resolver":"https://pith.science/pith/O4W5PM3ZCWXAA57X3R3ZWGT2J7","bundle":"https://pith.science/pith/O4W5PM3ZCWXAA57X3R3ZWGT2J7/bundle.json","state":"https://pith.science/pith/O4W5PM3ZCWXAA57X3R3ZWGT2J7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O4W5PM3ZCWXAA57X3R3ZWGT2J7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:O4W5PM3ZCWXAA57X3R3ZWGT2J7","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":"7d5292abbdc7f52e1ec31841b7a0d6f7242397d4800abcbbe3fc7518ed426d45","cross_cats_sorted":["astro-ph.HE","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-11-22T05:25:28Z","title_canon_sha256":"bbaa61f406706c90eee33c7baf0b31b46730e7707fdede7159aa31cd4b08dc43"},"schema_version":"1.0","source":{"id":"2011.10940","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.10940","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"arxiv_version","alias_value":"2011.10940v2","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.10940","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"pith_short_12","alias_value":"O4W5PM3ZCWXA","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"pith_short_16","alias_value":"O4W5PM3ZCWXAA57X","created_at":"2026-07-05T02:36:31Z"},{"alias_kind":"pith_short_8","alias_value":"O4W5PM3Z","created_at":"2026-07-05T02:36:31Z"}],"graph_snapshots":[{"event_id":"sha256:8d36e16bf0b16cd3ea130eb82191b7dc9d686fd7124c269d9b00ce26be0b3dbe","target":"graph","created_at":"2026-07-05T02:36:31Z","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/2011.10940/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neutron stars are cosmic laboratories to study dense matter in Quantum Chromodynamics (QCD). The observable mass-radius relations of neutron stars are determined by QCD equations of state, and can reflect the properties of QCD phase transitions. In the last decade there have been historical discoveries in neutron stars, the discoveries of two-solar mass neutron stars and neutron star merger events, which have imposed tight constraints on equations of state. While a number of equations of state are constructed to satisfy these constraints, a theoretical challenge is how to reconcile those const","authors_text":"Toru Kojo","cross_cats":["astro-ph.HE","hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-11-22T05:25:28Z","title":"QCD equations of state and speed of sound in neutron stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.10940","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":"sha256:4b0620e0f58775b684b9414e3046323257c41cf78588803b2b089c74f346a6f6","target":"record","created_at":"2026-07-05T02:36:31Z","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":"7d5292abbdc7f52e1ec31841b7a0d6f7242397d4800abcbbe3fc7518ed426d45","cross_cats_sorted":["astro-ph.HE","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-11-22T05:25:28Z","title_canon_sha256":"bbaa61f406706c90eee33c7baf0b31b46730e7707fdede7159aa31cd4b08dc43"},"schema_version":"1.0","source":{"id":"2011.10940","kind":"arxiv","version":2}},"canonical_sha256":"772dd7b37915ae0077f7dc779b1a7a4ff3fdd4ca9524d527c5c754acc6d3e1be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"772dd7b37915ae0077f7dc779b1a7a4ff3fdd4ca9524d527c5c754acc6d3e1be","first_computed_at":"2026-07-05T02:36:31.644669Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:36:31.644669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vr39q3Icc28OCsTksrj8BzUAe7hzTrK4DFaGAY8RIEpEhxXzQYCU0UZT4b1sgcFPR6PALQCtr5+2FhITl36hDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:36:31.645400Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.10940","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b0620e0f58775b684b9414e3046323257c41cf78588803b2b089c74f346a6f6","sha256:8d36e16bf0b16cd3ea130eb82191b7dc9d686fd7124c269d9b00ce26be0b3dbe"],"state_sha256":"53ed9460d18a5760f0bf437f2cb32c41af5a6b44a2c0e0bcd025411f4966822e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"12y4Vrhr7xb3V7x7lk83oPd6NwQmpJSKWIO7y9GmnaJEs0HExxMuNk5hBXkvB4v3f6mFcW4BIiY90eyq0u+4Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T21:20:03.477877Z","bundle_sha256":"c9c0da7ddac2c951e1fcdd84574ad0c3319abd73ef9b2113bddedd09a4ab5f59"}}