{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NIVCV7XPCMIJUTBKDBH3KXKDLG","short_pith_number":"pith:NIVCV7XP","canonical_record":{"source":{"id":"1809.05064","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-13T17:14:55Z","cross_cats_sorted":[],"title_canon_sha256":"97d1f5ce39abf4a87531eb160f0666874710d9c424ed32aa7d07150e5618521f","abstract_canon_sha256":"25aeb22de918be2f4d647ce0273866ab460fbeedd56b19f0945e93762940d233"},"schema_version":"1.0"},"canonical_sha256":"6a2a2afeef13109a4c2a184fb55d4359ba71eea84fdfc3725bf02824e053e5a8","source":{"kind":"arxiv","id":"1809.05064","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.05064","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"arxiv_version","alias_value":"1809.05064v2","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.05064","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"pith_short_12","alias_value":"NIVCV7XPCMIJ","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NIVCV7XPCMIJUTBK","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NIVCV7XP","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NIVCV7XPCMIJUTBKDBH3KXKDLG","target":"record","payload":{"canonical_record":{"source":{"id":"1809.05064","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-13T17:14:55Z","cross_cats_sorted":[],"title_canon_sha256":"97d1f5ce39abf4a87531eb160f0666874710d9c424ed32aa7d07150e5618521f","abstract_canon_sha256":"25aeb22de918be2f4d647ce0273866ab460fbeedd56b19f0945e93762940d233"},"schema_version":"1.0"},"canonical_sha256":"6a2a2afeef13109a4c2a184fb55d4359ba71eea84fdfc3725bf02824e053e5a8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:17.896908Z","signature_b64":"zGUrDm5Q7+eNZ8/VsM1qtdbyIYv5h+3Q78zsZ3TscncAhtX3C785lWhrp7BmoT1jIFuLnC0UTaXJOxEQWFwxCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a2a2afeef13109a4c2a184fb55d4359ba71eea84fdfc3725bf02824e053e5a8","last_reissued_at":"2026-05-17T23:56:17.896411Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:17.896411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.05064","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":"2026-05-17T23:56:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lg7jR8NPcdJXCg883WmCwyejEhkyskS4dZnVcCmiOfSel9HkHx+X4U5+IDzr9dfc2aj5Dfgx5MCVNSUqjC2rDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:15:52.326331Z"},"content_sha256":"be01663fc7aad3d68e0888b34de10308754c43b42d06080b16e239f8f62a02b1","schema_version":"1.0","event_id":"sha256:be01663fc7aad3d68e0888b34de10308754c43b42d06080b16e239f8f62a02b1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NIVCV7XPCMIJUTBKDBH3KXKDLG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PSR J2234+0611: A new laboratory for stellar evolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"C. Ng, D. J. Nice, D. R. Lorimer, E. C. Ferrara, E. Fonseca, H. Blumer, H. T. Cromartie, I. H. Stairs, J. A. Ellis, J. Antoniadis, J. G. Martinez, J. K. Swiggum, J. S. Deneva, K. Stovall, M. A. McLaughlin, M. Bagchi, M. E. DeCesar, M. L. Jones, M. T. Lam, N. Garver-Daniels, P. A. Gentile, P. B. Demorest, P. C. C. Freire, P. R. Brook, R. D. Ferdman, R. S. Lynch, R. Spiewak, S. J. Vigeland, S. M. Ransom, T. Dolch, T. T. Pennucci, W. W. Zhu, Z. Arzoumanian","submitted_at":"2018-09-13T17:14:55Z","abstract_excerpt":"We report timing results for PSR J2234+0611, a 3.6-ms pulsar in a 32-day, eccentric (e = 0.13) orbit with a helium white dwarf companion discovered as part of the Arecibo Observatory 327 MHz drift scan survey. The precise timing and the eccentric nature of the orbit allow precise measurements of an unusual number of parameters: a) a precise proper motion of 27.10(3) mas/yr and a parallax of 1.05(4) mas resulting in a pulsar distance of 0.95(4) kpc; this allows a precise estimate of the transverse velocity, 123(5) km/s. Together with previously published spectroscopic measurements of the system"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05064","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":""},"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":"2026-05-17T23:56:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0JFnPPrACgdYGtox3dMychSZdw1WI+Qst3M6JRXEHmcJtJr/1edSO4ZNqdMNpRyph7+OMol4tKsIiaooKsESAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:15:52.326961Z"},"content_sha256":"90fd4840ae2f8ea6f348e120edbfabc25ccd028ca995311b90efd0bf887e54e4","schema_version":"1.0","event_id":"sha256:90fd4840ae2f8ea6f348e120edbfabc25ccd028ca995311b90efd0bf887e54e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NIVCV7XPCMIJUTBKDBH3KXKDLG/bundle.json","state_url":"https://pith.science/pith/NIVCV7XPCMIJUTBKDBH3KXKDLG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NIVCV7XPCMIJUTBKDBH3KXKDLG/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":"2026-05-25T22:15:52Z","links":{"resolver":"https://pith.science/pith/NIVCV7XPCMIJUTBKDBH3KXKDLG","bundle":"https://pith.science/pith/NIVCV7XPCMIJUTBKDBH3KXKDLG/bundle.json","state":"https://pith.science/pith/NIVCV7XPCMIJUTBKDBH3KXKDLG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NIVCV7XPCMIJUTBKDBH3KXKDLG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NIVCV7XPCMIJUTBKDBH3KXKDLG","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":"25aeb22de918be2f4d647ce0273866ab460fbeedd56b19f0945e93762940d233","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-13T17:14:55Z","title_canon_sha256":"97d1f5ce39abf4a87531eb160f0666874710d9c424ed32aa7d07150e5618521f"},"schema_version":"1.0","source":{"id":"1809.05064","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.05064","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"arxiv_version","alias_value":"1809.05064v2","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.05064","created_at":"2026-05-17T23:56:17Z"},{"alias_kind":"pith_short_12","alias_value":"NIVCV7XPCMIJ","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NIVCV7XPCMIJUTBK","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NIVCV7XP","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:90fd4840ae2f8ea6f348e120edbfabc25ccd028ca995311b90efd0bf887e54e4","target":"graph","created_at":"2026-05-17T23:56:17Z","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":"We report timing results for PSR J2234+0611, a 3.6-ms pulsar in a 32-day, eccentric (e = 0.13) orbit with a helium white dwarf companion discovered as part of the Arecibo Observatory 327 MHz drift scan survey. The precise timing and the eccentric nature of the orbit allow precise measurements of an unusual number of parameters: a) a precise proper motion of 27.10(3) mas/yr and a parallax of 1.05(4) mas resulting in a pulsar distance of 0.95(4) kpc; this allows a precise estimate of the transverse velocity, 123(5) km/s. Together with previously published spectroscopic measurements of the system","authors_text":"C. Ng, D. J. Nice, D. R. Lorimer, E. C. Ferrara, E. Fonseca, H. Blumer, H. T. Cromartie, I. H. Stairs, J. A. Ellis, J. Antoniadis, J. G. Martinez, J. K. Swiggum, J. S. Deneva, K. Stovall, M. A. McLaughlin, M. Bagchi, M. E. DeCesar, M. L. Jones, M. T. Lam, N. Garver-Daniels, P. A. Gentile, P. B. Demorest, P. C. C. Freire, P. R. Brook, R. D. Ferdman, R. S. Lynch, R. Spiewak, S. J. Vigeland, S. M. Ransom, T. Dolch, T. T. Pennucci, W. W. Zhu, Z. Arzoumanian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-13T17:14:55Z","title":"PSR J2234+0611: A new laboratory for stellar evolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05064","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:be01663fc7aad3d68e0888b34de10308754c43b42d06080b16e239f8f62a02b1","target":"record","created_at":"2026-05-17T23:56:17Z","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":"25aeb22de918be2f4d647ce0273866ab460fbeedd56b19f0945e93762940d233","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-13T17:14:55Z","title_canon_sha256":"97d1f5ce39abf4a87531eb160f0666874710d9c424ed32aa7d07150e5618521f"},"schema_version":"1.0","source":{"id":"1809.05064","kind":"arxiv","version":2}},"canonical_sha256":"6a2a2afeef13109a4c2a184fb55d4359ba71eea84fdfc3725bf02824e053e5a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a2a2afeef13109a4c2a184fb55d4359ba71eea84fdfc3725bf02824e053e5a8","first_computed_at":"2026-05-17T23:56:17.896411Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:17.896411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zGUrDm5Q7+eNZ8/VsM1qtdbyIYv5h+3Q78zsZ3TscncAhtX3C785lWhrp7BmoT1jIFuLnC0UTaXJOxEQWFwxCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:17.896908Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.05064","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be01663fc7aad3d68e0888b34de10308754c43b42d06080b16e239f8f62a02b1","sha256:90fd4840ae2f8ea6f348e120edbfabc25ccd028ca995311b90efd0bf887e54e4"],"state_sha256":"311a7a085b428e1fa7096db38f021604d340623b7fed70ab9c09412c8afeda59"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QJxmmyfGe5X+jSRxLEmXumWLnDK7ImvVh56PR4DJKvlZ5m23K+aXsh0lRgJ2jy77zHYawNied763xT5Glh1VCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:15:52.330817Z","bundle_sha256":"d27c504fc06814ddf6740ce22e05f3417f16b498b9271f0b2c8ccdd72dbe3fba"}}