{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:XFLR22INDJA2XKYVDK2SLOFKZ7","short_pith_number":"pith:XFLR22IN","canonical_record":{"source":{"id":"1001.1642","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-01-11T12:19:45Z","cross_cats_sorted":["astro-ph.SR","nucl-th"],"title_canon_sha256":"7b81f16f015d3a2219332602ba41154b58b1e10af2e75c1c0bcd7a335011f736","abstract_canon_sha256":"6b63894e03098b7bc8fedf7f9246eba8be9bd71adaacfb9f3574794799ede311"},"schema_version":"1.0"},"canonical_sha256":"b9571d690d1a41abab151ab525b8aacfe181efe8b3d02ce7d9528e3eee1813f1","source":{"kind":"arxiv","id":"1001.1642","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.1642","created_at":"2026-05-18T02:10:03Z"},{"alias_kind":"arxiv_version","alias_value":"1001.1642v1","created_at":"2026-05-18T02:10:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.1642","created_at":"2026-05-18T02:10:03Z"},{"alias_kind":"pith_short_12","alias_value":"XFLR22INDJA2","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"XFLR22INDJA2XKYV","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"XFLR22IN","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:XFLR22INDJA2XKYVDK2SLOFKZ7","target":"record","payload":{"canonical_record":{"source":{"id":"1001.1642","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-01-11T12:19:45Z","cross_cats_sorted":["astro-ph.SR","nucl-th"],"title_canon_sha256":"7b81f16f015d3a2219332602ba41154b58b1e10af2e75c1c0bcd7a335011f736","abstract_canon_sha256":"6b63894e03098b7bc8fedf7f9246eba8be9bd71adaacfb9f3574794799ede311"},"schema_version":"1.0"},"canonical_sha256":"b9571d690d1a41abab151ab525b8aacfe181efe8b3d02ce7d9528e3eee1813f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:03.125289Z","signature_b64":"u4vQLunCaBPc8ASA1dx4+leZH2u5PfHh7mcO1XtWW41koMTtZBiHvs8N83JnzJwQr256iCWJ5pKbCVfmWZvXCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9571d690d1a41abab151ab525b8aacfe181efe8b3d02ce7d9528e3eee1813f1","last_reissued_at":"2026-05-18T02:10:03.124627Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:03.124627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.1642","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:10:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zCyHxzScD/Z/gCvW7XBFcS3bufgjUfPqufoBCnwhPltHEG0ZuqvG1BmF8bASqTP0HmB0ykoh62NKYstfZX1aDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:45:59.851834Z"},"content_sha256":"cdf6e426293d65c5d9135cc5b9fa18b29c6429eb38994e232f774f175879b2f3","schema_version":"1.0","event_id":"sha256:cdf6e426293d65c5d9135cc5b9fa18b29c6429eb38994e232f774f175879b2f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:XFLR22INDJA2XKYVDK2SLOFKZ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of neutron star parameters: a review of methods for low-mass X-ray binaries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","nucl-th"],"primary_cat":"astro-ph.HE","authors_text":"India), Sudip Bhattacharyya (TIFR","submitted_at":"2010-01-11T12:19:45Z","abstract_excerpt":"Measurement of at least three independent parameters, for example, mass, radius and spin frequency, of a neutron star is probably the only way to understand the nature of its supranuclear core matter. Such a measurement is extremely difficult because of various systematic uncertainties. The lack of knowledge of several system parameter values gives rise to such systematics. Low-mass X-ray binaries, which contain neutron stars, provide a number of methods to constrain the stellar parameters. Joint application of these methods has a great potential to significantly reduce the systematic uncertai"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.1642","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T02:10:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x9efRGFrCfhG4NoX5kG5YZoDfppYO/gD+UXq8WM8BkZUcxaaeoTdVu923vzofYPBaesf3MP9JqNRXxLUH6ojBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:45:59.852520Z"},"content_sha256":"16561a94aef271ab80bfb26e1d5af7656df6f2eee27ea23a37fbc6f1d0f79f94","schema_version":"1.0","event_id":"sha256:16561a94aef271ab80bfb26e1d5af7656df6f2eee27ea23a37fbc6f1d0f79f94"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XFLR22INDJA2XKYVDK2SLOFKZ7/bundle.json","state_url":"https://pith.science/pith/XFLR22INDJA2XKYVDK2SLOFKZ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XFLR22INDJA2XKYVDK2SLOFKZ7/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":"2026-05-29T22:45:59Z","links":{"resolver":"https://pith.science/pith/XFLR22INDJA2XKYVDK2SLOFKZ7","bundle":"https://pith.science/pith/XFLR22INDJA2XKYVDK2SLOFKZ7/bundle.json","state":"https://pith.science/pith/XFLR22INDJA2XKYVDK2SLOFKZ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XFLR22INDJA2XKYVDK2SLOFKZ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:XFLR22INDJA2XKYVDK2SLOFKZ7","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":"6b63894e03098b7bc8fedf7f9246eba8be9bd71adaacfb9f3574794799ede311","cross_cats_sorted":["astro-ph.SR","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-01-11T12:19:45Z","title_canon_sha256":"7b81f16f015d3a2219332602ba41154b58b1e10af2e75c1c0bcd7a335011f736"},"schema_version":"1.0","source":{"id":"1001.1642","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.1642","created_at":"2026-05-18T02:10:03Z"},{"alias_kind":"arxiv_version","alias_value":"1001.1642v1","created_at":"2026-05-18T02:10:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.1642","created_at":"2026-05-18T02:10:03Z"},{"alias_kind":"pith_short_12","alias_value":"XFLR22INDJA2","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"XFLR22INDJA2XKYV","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"XFLR22IN","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:16561a94aef271ab80bfb26e1d5af7656df6f2eee27ea23a37fbc6f1d0f79f94","target":"graph","created_at":"2026-05-18T02:10:03Z","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"},"paper":{"abstract_excerpt":"Measurement of at least three independent parameters, for example, mass, radius and spin frequency, of a neutron star is probably the only way to understand the nature of its supranuclear core matter. Such a measurement is extremely difficult because of various systematic uncertainties. The lack of knowledge of several system parameter values gives rise to such systematics. Low-mass X-ray binaries, which contain neutron stars, provide a number of methods to constrain the stellar parameters. Joint application of these methods has a great potential to significantly reduce the systematic uncertai","authors_text":"India), Sudip Bhattacharyya (TIFR","cross_cats":["astro-ph.SR","nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-01-11T12:19:45Z","title":"Measurement of neutron star parameters: a review of methods for low-mass X-ray binaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.1642","kind":"arxiv","version":1},"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:cdf6e426293d65c5d9135cc5b9fa18b29c6429eb38994e232f774f175879b2f3","target":"record","created_at":"2026-05-18T02:10:03Z","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":"6b63894e03098b7bc8fedf7f9246eba8be9bd71adaacfb9f3574794799ede311","cross_cats_sorted":["astro-ph.SR","nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-01-11T12:19:45Z","title_canon_sha256":"7b81f16f015d3a2219332602ba41154b58b1e10af2e75c1c0bcd7a335011f736"},"schema_version":"1.0","source":{"id":"1001.1642","kind":"arxiv","version":1}},"canonical_sha256":"b9571d690d1a41abab151ab525b8aacfe181efe8b3d02ce7d9528e3eee1813f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9571d690d1a41abab151ab525b8aacfe181efe8b3d02ce7d9528e3eee1813f1","first_computed_at":"2026-05-18T02:10:03.124627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:03.124627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u4vQLunCaBPc8ASA1dx4+leZH2u5PfHh7mcO1XtWW41koMTtZBiHvs8N83JnzJwQr256iCWJ5pKbCVfmWZvXCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:03.125289Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.1642","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cdf6e426293d65c5d9135cc5b9fa18b29c6429eb38994e232f774f175879b2f3","sha256:16561a94aef271ab80bfb26e1d5af7656df6f2eee27ea23a37fbc6f1d0f79f94"],"state_sha256":"062f3701a9bb09bb9007e4e0cf587effe9678dd9664254e999df54e9170c7bfc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lHOJeuKNBXs4CeOfdkzVw4ACNk8EQSvv5aN0XyM3cq9LqVFLMuF+nG/rEnzqFGb/BAOfO3dDkqD1UmC4K1qXBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T22:45:59.856182Z","bundle_sha256":"f83b9be744fb17f4f5229099c16f4c4f86520a666c4d639d6073ae3d181b876e"}}