{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:4BMYSM5AYJBY2HLJJLVOPIEA2C","short_pith_number":"pith:4BMYSM5A","canonical_record":{"source":{"id":"2105.04629","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"nucl-th","submitted_at":"2021-05-10T19:31:55Z","cross_cats_sorted":["astro-ph.HE","nucl-ex"],"title_canon_sha256":"d02ee57252f32b072d07069b51394f38a78846e1b875864f208b78a8aa6adc66","abstract_canon_sha256":"9ab183c1a266d16740815dd2282031f504f510a69c4399a8f3b952fa4a6bfd05"},"schema_version":"1.0"},"canonical_sha256":"e0598933a0c2438d1d694aeae7a080d0b8254c312628dc6cf0421f3aacaf735c","source":{"kind":"arxiv","id":"2105.04629","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.04629","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"arxiv_version","alias_value":"2105.04629v2","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.04629","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"pith_short_12","alias_value":"4BMYSM5AYJBY","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"pith_short_16","alias_value":"4BMYSM5AYJBY2HLJ","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"pith_short_8","alias_value":"4BMYSM5A","created_at":"2026-07-05T02:46:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:4BMYSM5AYJBY2HLJJLVOPIEA2C","target":"record","payload":{"canonical_record":{"source":{"id":"2105.04629","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"nucl-th","submitted_at":"2021-05-10T19:31:55Z","cross_cats_sorted":["astro-ph.HE","nucl-ex"],"title_canon_sha256":"d02ee57252f32b072d07069b51394f38a78846e1b875864f208b78a8aa6adc66","abstract_canon_sha256":"9ab183c1a266d16740815dd2282031f504f510a69c4399a8f3b952fa4a6bfd05"},"schema_version":"1.0"},"canonical_sha256":"e0598933a0c2438d1d694aeae7a080d0b8254c312628dc6cf0421f3aacaf735c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:46:27.978278Z","signature_b64":"aB+DcNSEPpAfR10DVHMyUfz11R4z6RJBlCMSpkTtZHdYshpYmod2g+xJrF9nt09EzLYzfFLjcTOwBIoTPOPPDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0598933a0c2438d1d694aeae7a080d0b8254c312628dc6cf0421f3aacaf735c","last_reissued_at":"2026-07-05T02:46:27.977746Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:46:27.977746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.04629","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":"2026-07-05T02:46:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x9Mq4Aaue6j8AJhsct4B3iglzOiABR/f2OcrOgJC8TSqYfKuxlfRPGap3HCMl5rtXW7xwLGxc1Y2GOQwYE/KCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:11:39.211357Z"},"content_sha256":"215a0f7c8e28bdb31e31a1d8f98691d47a8767033ff1fe5e52827f690be136c6","schema_version":"1.0","event_id":"sha256:215a0f7c8e28bdb31e31a1d8f98691d47a8767033ff1fe5e52827f690be136c6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:4BMYSM5AYJBY2HLJJLVOPIEA2C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["astro-ph.HE","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Bao-An Li, Bao-Jun Cai, Nai-Bo Zhang, Wen-Jie Xie","submitted_at":"2021-05-10T19:31:55Z","abstract_excerpt":"New observational data of neutron stars since GW170817 have helped improve our knowledge about nuclear symmetry energy especially at high densities. We have learned particularly: (1) The slope parameter $L$ of nuclear symmetry energy at saturation density $\\rho_0$ of nuclear matter from 24 new analyses is about $L\\approx 57.7\\pm 19$ MeV at 68\\% confidence level consistent with its fiducial value, (2) The curvature $K_{\\rm{sym}}$ from 16 new analyses is about $K_{\\rm{sym}}\\approx -107\\pm 88$ MeV, (3) The magnitude of nuclear symmetry energy at $2\\rho_0$, i.e. $E_{\\rm{sym}}(2\\rho_0)\\approx 51\\pm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.04629","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/2105.04629/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":"2026-07-05T02:46:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/pwBVJ3xh1bt7Anf/1H3HoG8dgh58iyBMzLma/cFQ5Sit8RnuJTD8qtlKd1redpGrFg1Qbd42fOEkjj7lL5gCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:11:39.212080Z"},"content_sha256":"ceb28b3b67920dd1a72e6aaf9934d7270e67af4263a29151fd81687c3eff1cc3","schema_version":"1.0","event_id":"sha256:ceb28b3b67920dd1a72e6aaf9934d7270e67af4263a29151fd81687c3eff1cc3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4BMYSM5AYJBY2HLJJLVOPIEA2C/bundle.json","state_url":"https://pith.science/pith/4BMYSM5AYJBY2HLJJLVOPIEA2C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4BMYSM5AYJBY2HLJJLVOPIEA2C/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":"2026-08-04T12:11:39Z","links":{"resolver":"https://pith.science/pith/4BMYSM5AYJBY2HLJJLVOPIEA2C","bundle":"https://pith.science/pith/4BMYSM5AYJBY2HLJJLVOPIEA2C/bundle.json","state":"https://pith.science/pith/4BMYSM5AYJBY2HLJJLVOPIEA2C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4BMYSM5AYJBY2HLJJLVOPIEA2C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:4BMYSM5AYJBY2HLJJLVOPIEA2C","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":"9ab183c1a266d16740815dd2282031f504f510a69c4399a8f3b952fa4a6bfd05","cross_cats_sorted":["astro-ph.HE","nucl-ex"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"nucl-th","submitted_at":"2021-05-10T19:31:55Z","title_canon_sha256":"d02ee57252f32b072d07069b51394f38a78846e1b875864f208b78a8aa6adc66"},"schema_version":"1.0","source":{"id":"2105.04629","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.04629","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"arxiv_version","alias_value":"2105.04629v2","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.04629","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"pith_short_12","alias_value":"4BMYSM5AYJBY","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"pith_short_16","alias_value":"4BMYSM5AYJBY2HLJ","created_at":"2026-07-05T02:46:27Z"},{"alias_kind":"pith_short_8","alias_value":"4BMYSM5A","created_at":"2026-07-05T02:46:27Z"}],"graph_snapshots":[{"event_id":"sha256:ceb28b3b67920dd1a72e6aaf9934d7270e67af4263a29151fd81687c3eff1cc3","target":"graph","created_at":"2026-07-05T02:46:27Z","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/2105.04629/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"New observational data of neutron stars since GW170817 have helped improve our knowledge about nuclear symmetry energy especially at high densities. We have learned particularly: (1) The slope parameter $L$ of nuclear symmetry energy at saturation density $\\rho_0$ of nuclear matter from 24 new analyses is about $L\\approx 57.7\\pm 19$ MeV at 68\\% confidence level consistent with its fiducial value, (2) The curvature $K_{\\rm{sym}}$ from 16 new analyses is about $K_{\\rm{sym}}\\approx -107\\pm 88$ MeV, (3) The magnitude of nuclear symmetry energy at $2\\rho_0$, i.e. $E_{\\rm{sym}}(2\\rho_0)\\approx 51\\pm","authors_text":"Bao-An Li, Bao-Jun Cai, Nai-Bo Zhang, Wen-Jie Xie","cross_cats":["astro-ph.HE","nucl-ex"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"nucl-th","submitted_at":"2021-05-10T19:31:55Z","title":"Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.04629","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":"sha256:215a0f7c8e28bdb31e31a1d8f98691d47a8767033ff1fe5e52827f690be136c6","target":"record","created_at":"2026-07-05T02:46:27Z","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":"9ab183c1a266d16740815dd2282031f504f510a69c4399a8f3b952fa4a6bfd05","cross_cats_sorted":["astro-ph.HE","nucl-ex"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"nucl-th","submitted_at":"2021-05-10T19:31:55Z","title_canon_sha256":"d02ee57252f32b072d07069b51394f38a78846e1b875864f208b78a8aa6adc66"},"schema_version":"1.0","source":{"id":"2105.04629","kind":"arxiv","version":2}},"canonical_sha256":"e0598933a0c2438d1d694aeae7a080d0b8254c312628dc6cf0421f3aacaf735c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e0598933a0c2438d1d694aeae7a080d0b8254c312628dc6cf0421f3aacaf735c","first_computed_at":"2026-07-05T02:46:27.977746Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:46:27.977746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aB+DcNSEPpAfR10DVHMyUfz11R4z6RJBlCMSpkTtZHdYshpYmod2g+xJrF9nt09EzLYzfFLjcTOwBIoTPOPPDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:46:27.978278Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.04629","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:215a0f7c8e28bdb31e31a1d8f98691d47a8767033ff1fe5e52827f690be136c6","sha256:ceb28b3b67920dd1a72e6aaf9934d7270e67af4263a29151fd81687c3eff1cc3"],"state_sha256":"42069fa5793a23296c19d5255128502f068c95996f4ed369709a402223566b0f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"npMgRArVCmWl5R87CuTAFCGm68VGSVgJ/X9T4HomGJFyhGO0p1ImAEexQL9E373kbPmv+uB9rVi87rQIFQS+DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T12:11:39.216390Z","bundle_sha256":"a770aed3a64ecdaccd39f6ae16e5d9a8647a0e6b4c7ba4289161b054bdce04bc"}}