{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:2LFWJIM57VX3F7WYH6RARU4THH","short_pith_number":"pith:2LFWJIM5","canonical_record":{"source":{"id":"1908.10415","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-08-27T19:14:15Z","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-lat","nucl-th"],"title_canon_sha256":"6548bc5cad46cfdc4b0582e209eeeee9e95f87669196daeeae082146db0e8bdb","abstract_canon_sha256":"a2572a0f2ae59ef812adf764991decc8c550e0315a7614845b4821cb811c1501"},"schema_version":"1.0"},"canonical_sha256":"d2cb64a19dfd6fb2fed83fa208d39339df3b2f6d31795fcdc4836205161f8597","source":{"kind":"arxiv","id":"1908.10415","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.10415","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"arxiv_version","alias_value":"1908.10415v2","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.10415","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"pith_short_12","alias_value":"2LFWJIM57VX3","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"2LFWJIM57VX3F7WY","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"2LFWJIM5","created_at":"2026-07-05T01:28:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:2LFWJIM57VX3F7WYH6RARU4THH","target":"record","payload":{"canonical_record":{"source":{"id":"1908.10415","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-08-27T19:14:15Z","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-lat","nucl-th"],"title_canon_sha256":"6548bc5cad46cfdc4b0582e209eeeee9e95f87669196daeeae082146db0e8bdb","abstract_canon_sha256":"a2572a0f2ae59ef812adf764991decc8c550e0315a7614845b4821cb811c1501"},"schema_version":"1.0"},"canonical_sha256":"d2cb64a19dfd6fb2fed83fa208d39339df3b2f6d31795fcdc4836205161f8597","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:28:28.685169Z","signature_b64":"YWLdhI3f0UKbpBQQp9lp7yMy6xWu/tZqrGT3d+9TcWgAvtVa1Ugge7zZGXCMFbfAAFDoHTj2qlizH/auyMrRBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2cb64a19dfd6fb2fed83fa208d39339df3b2f6d31795fcdc4836205161f8597","last_reissued_at":"2026-07-05T01:28:28.684771Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:28:28.684771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.10415","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":"2026-07-05T01:28:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3xyp+oCyPEXl3Nt8YSmidYUz0/awZEjjpYmV4TShRHBysnkZrNXBXPl7QtTAnzKgQA+ladKvqPdXxstVKr0+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T10:10:58.912969Z"},"content_sha256":"bee4092486dacfb99207e34c6ddac4308033b1826a8042fe0be4f5e6e66f4c0a","schema_version":"1.0","event_id":"sha256:bee4092486dacfb99207e34c6ddac4308033b1826a8042fe0be4f5e6e66f4c0a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:2LFWJIM57VX3F7WYH6RARU4THH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cold quark matter with heavy quarks and the stability of charm stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc","hep-lat","nucl-th"],"primary_cat":"hep-ph","authors_text":"Eduardo S. Fraga, Jos\\'e C. Jim\\'enez","submitted_at":"2019-08-27T19:14:15Z","abstract_excerpt":"We study the effects of heavy quarks on the equation of state for cold and dense quark matter obtained from perturbative QCD, yielding observables parametrized only by the renormalization scale. We investigate the thermodynamics of charm quark matter under the constraints of $\\beta$ equilibrium and electric charge neutrality in a region of densities where perturbative QCD is, in principle, much more reliable. We also analyze the stability of charm stars, which might be realized as a new branch of ultradense hybrid compact stars, and find that such quark stars are unstable under radial oscillat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.10415","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/1908.10415/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":"2026-07-05T01:28:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VHhocCVErCeDq/jubIRGW6OaAGrsmxhb6F1c7rsklVzKL8jLlQNE3JpQe0ilEldMgh055A4k07ohYsoDV2alDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T10:10:58.913478Z"},"content_sha256":"7991fb9bf0988e8a223a268e9b0a736349bb3bf99f04d7d9b8294d76bf3b36c2","schema_version":"1.0","event_id":"sha256:7991fb9bf0988e8a223a268e9b0a736349bb3bf99f04d7d9b8294d76bf3b36c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2LFWJIM57VX3F7WYH6RARU4THH/bundle.json","state_url":"https://pith.science/pith/2LFWJIM57VX3F7WYH6RARU4THH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2LFWJIM57VX3F7WYH6RARU4THH/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":"2026-08-19T10:10:58Z","links":{"resolver":"https://pith.science/pith/2LFWJIM57VX3F7WYH6RARU4THH","bundle":"https://pith.science/pith/2LFWJIM57VX3F7WYH6RARU4THH/bundle.json","state":"https://pith.science/pith/2LFWJIM57VX3F7WYH6RARU4THH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2LFWJIM57VX3F7WYH6RARU4THH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:2LFWJIM57VX3F7WYH6RARU4THH","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":"a2572a0f2ae59ef812adf764991decc8c550e0315a7614845b4821cb811c1501","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-lat","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-08-27T19:14:15Z","title_canon_sha256":"6548bc5cad46cfdc4b0582e209eeeee9e95f87669196daeeae082146db0e8bdb"},"schema_version":"1.0","source":{"id":"1908.10415","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.10415","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"arxiv_version","alias_value":"1908.10415v2","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.10415","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"pith_short_12","alias_value":"2LFWJIM57VX3","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"2LFWJIM57VX3F7WY","created_at":"2026-07-05T01:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"2LFWJIM5","created_at":"2026-07-05T01:28:28Z"}],"graph_snapshots":[{"event_id":"sha256:7991fb9bf0988e8a223a268e9b0a736349bb3bf99f04d7d9b8294d76bf3b36c2","target":"graph","created_at":"2026-07-05T01:28:28Z","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/1908.10415/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the effects of heavy quarks on the equation of state for cold and dense quark matter obtained from perturbative QCD, yielding observables parametrized only by the renormalization scale. We investigate the thermodynamics of charm quark matter under the constraints of $\\beta$ equilibrium and electric charge neutrality in a region of densities where perturbative QCD is, in principle, much more reliable. We also analyze the stability of charm stars, which might be realized as a new branch of ultradense hybrid compact stars, and find that such quark stars are unstable under radial oscillat","authors_text":"Eduardo S. Fraga, Jos\\'e C. Jim\\'enez","cross_cats":["astro-ph.HE","gr-qc","hep-lat","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-08-27T19:14:15Z","title":"Cold quark matter with heavy quarks and the stability of charm stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.10415","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:bee4092486dacfb99207e34c6ddac4308033b1826a8042fe0be4f5e6e66f4c0a","target":"record","created_at":"2026-07-05T01:28:28Z","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":"a2572a0f2ae59ef812adf764991decc8c550e0315a7614845b4821cb811c1501","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-lat","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-08-27T19:14:15Z","title_canon_sha256":"6548bc5cad46cfdc4b0582e209eeeee9e95f87669196daeeae082146db0e8bdb"},"schema_version":"1.0","source":{"id":"1908.10415","kind":"arxiv","version":2}},"canonical_sha256":"d2cb64a19dfd6fb2fed83fa208d39339df3b2f6d31795fcdc4836205161f8597","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2cb64a19dfd6fb2fed83fa208d39339df3b2f6d31795fcdc4836205161f8597","first_computed_at":"2026-07-05T01:28:28.684771Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:28:28.684771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YWLdhI3f0UKbpBQQp9lp7yMy6xWu/tZqrGT3d+9TcWgAvtVa1Ugge7zZGXCMFbfAAFDoHTj2qlizH/auyMrRBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:28:28.685169Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.10415","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bee4092486dacfb99207e34c6ddac4308033b1826a8042fe0be4f5e6e66f4c0a","sha256:7991fb9bf0988e8a223a268e9b0a736349bb3bf99f04d7d9b8294d76bf3b36c2"],"state_sha256":"ddafb98ee912a537ac1596872079c02a9741811cccb4e82f0260f1afb70254fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DQOAPYkxu9LO3rIb+13KRB7RNTeopJZCBiUU+QjVobxnE3SgElEQSgN2DFCCSmiqcNA3lxBMwRT+nKzGFUtwAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T10:10:58.917263Z","bundle_sha256":"53c38c986553a24bbb90ab2249d84da68e09241a92486b0fae4778de5d3ad741"}}