{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:WZPL5LEKFIXUMCM3WZUOB5OJFR","short_pith_number":"pith:WZPL5LEK","canonical_record":{"source":{"id":"1703.10625","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-30T18:19:54Z","cross_cats_sorted":[],"title_canon_sha256":"ecc06f9545cbdf77d6c3c5a646a56a4aa899c11fc263f351351591b32de90087","abstract_canon_sha256":"92b31bb9a6adda4e4857d58c9fea91bb137e2d4ede8a1129ec446654cf77f593"},"schema_version":"1.0"},"canonical_sha256":"b65ebeac8a2a2f46099bb668e0f5c92c572f6f603a44c9d589765ab4c64a370d","source":{"kind":"arxiv","id":"1703.10625","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10625","created_at":"2026-05-18T00:43:51Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10625v1","created_at":"2026-05-18T00:43:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10625","created_at":"2026-05-18T00:43:51Z"},{"alias_kind":"pith_short_12","alias_value":"WZPL5LEKFIXU","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WZPL5LEKFIXUMCM3","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WZPL5LEK","created_at":"2026-05-18T12:31:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:WZPL5LEKFIXUMCM3WZUOB5OJFR","target":"record","payload":{"canonical_record":{"source":{"id":"1703.10625","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-30T18:19:54Z","cross_cats_sorted":[],"title_canon_sha256":"ecc06f9545cbdf77d6c3c5a646a56a4aa899c11fc263f351351591b32de90087","abstract_canon_sha256":"92b31bb9a6adda4e4857d58c9fea91bb137e2d4ede8a1129ec446654cf77f593"},"schema_version":"1.0"},"canonical_sha256":"b65ebeac8a2a2f46099bb668e0f5c92c572f6f603a44c9d589765ab4c64a370d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:51.096400Z","signature_b64":"f4qWYZWrvWZPZLTtSBBZK7jVCQsrtolbJaO25cSjIaLWNBdfBtxHfcjMy7cPQcrL1YTol6dq67EtkGuPoHDwCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b65ebeac8a2a2f46099bb668e0f5c92c572f6f603a44c9d589765ab4c64a370d","last_reissued_at":"2026-05-18T00:43:51.095711Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:51.095711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.10625","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":"2026-05-18T00:43:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NEc7taX5ShLtxOMS2vJdc0zCIirtG2ACN+F9rgXWqzet6/3uTiS4nxQSrN7XeV764x3YoFPp/ua7rUvZvipRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:01:50.105073Z"},"content_sha256":"d8585a10f1c2ded925f77da8e7b26e573cbc417533aa0c211030a3644e9eb6ad","schema_version":"1.0","event_id":"sha256:d8585a10f1c2ded925f77da8e7b26e573cbc417533aa0c211030a3644e9eb6ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:WZPL5LEKFIXUMCM3WZUOB5OJFR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Sirius System and its Astrophysical Puzzles: Hubble Space Telescope and Ground-Based Astrometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(10) Univ. of Leicester, (11) Georgia State Univ), 2), (2) STScI, (3) CHARA Array, (4) LPL, (5) US Naval Obs., (6) Steward Obs., (7) Yale Univ., (8) Leibniz Institute Potsdam, (9) Arizona State Univ., Brian D. Mason (5), Donald Gudehus (11) ((1) Penn State Univ., Federico Spada (8), Gail H. Schaefer (3), Howard E. Bond (1, Irving W. Lindenblad (5), Jay B. Holberg (4), Martin A. Barstow (10), Matthew R. Burleigh (10), Miranda Seitz-McLeese (5), Patrick A. Young (9), Pierre Demarque (7), Ronald L. Gilliland (1, Univ. of Arizona, W. David Arnett (6)","submitted_at":"2017-03-30T18:19:54Z","abstract_excerpt":"Sirius, the seventh-nearest stellar system, is a visual binary containing the metallic-line A1 V star Sirius A, brightest star in the sky, orbited in a 50.13-year period by Sirius B, the brightest and nearest white dwarf (WD). Using images obtained over nearly two decades with the Hubble Space Telescope (HST), along with photographic observations covering almost 20 years, and nearly 2300 historical measurements dating back to the 19th century, we determine precise orbital elements for the visual binary. Combined with the parallax and the motion of the A component, these elements yield dynamica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10625","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":"2026-05-18T00:43:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S7zMDaYjKDFvXcYXt4iyNgsB7cKwVVyfkAuRlZ/cTPirvo2lc1BsKDA0gyo4PiFyolZsfXHfeP1IghwPumGbCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:01:50.106208Z"},"content_sha256":"2a5978f24539ab8c46939a550c8433219e889cca8c7b8748dd16882bdf321b16","schema_version":"1.0","event_id":"sha256:2a5978f24539ab8c46939a550c8433219e889cca8c7b8748dd16882bdf321b16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WZPL5LEKFIXUMCM3WZUOB5OJFR/bundle.json","state_url":"https://pith.science/pith/WZPL5LEKFIXUMCM3WZUOB5OJFR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WZPL5LEKFIXUMCM3WZUOB5OJFR/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":"2026-05-25T13:01:50Z","links":{"resolver":"https://pith.science/pith/WZPL5LEKFIXUMCM3WZUOB5OJFR","bundle":"https://pith.science/pith/WZPL5LEKFIXUMCM3WZUOB5OJFR/bundle.json","state":"https://pith.science/pith/WZPL5LEKFIXUMCM3WZUOB5OJFR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WZPL5LEKFIXUMCM3WZUOB5OJFR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WZPL5LEKFIXUMCM3WZUOB5OJFR","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":"92b31bb9a6adda4e4857d58c9fea91bb137e2d4ede8a1129ec446654cf77f593","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-30T18:19:54Z","title_canon_sha256":"ecc06f9545cbdf77d6c3c5a646a56a4aa899c11fc263f351351591b32de90087"},"schema_version":"1.0","source":{"id":"1703.10625","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10625","created_at":"2026-05-18T00:43:51Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10625v1","created_at":"2026-05-18T00:43:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10625","created_at":"2026-05-18T00:43:51Z"},{"alias_kind":"pith_short_12","alias_value":"WZPL5LEKFIXU","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WZPL5LEKFIXUMCM3","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WZPL5LEK","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:2a5978f24539ab8c46939a550c8433219e889cca8c7b8748dd16882bdf321b16","target":"graph","created_at":"2026-05-18T00:43:51Z","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":"Sirius, the seventh-nearest stellar system, is a visual binary containing the metallic-line A1 V star Sirius A, brightest star in the sky, orbited in a 50.13-year period by Sirius B, the brightest and nearest white dwarf (WD). Using images obtained over nearly two decades with the Hubble Space Telescope (HST), along with photographic observations covering almost 20 years, and nearly 2300 historical measurements dating back to the 19th century, we determine precise orbital elements for the visual binary. Combined with the parallax and the motion of the A component, these elements yield dynamica","authors_text":"(10) Univ. of Leicester, (11) Georgia State Univ), 2), (2) STScI, (3) CHARA Array, (4) LPL, (5) US Naval Obs., (6) Steward Obs., (7) Yale Univ., (8) Leibniz Institute Potsdam, (9) Arizona State Univ., Brian D. Mason (5), Donald Gudehus (11) ((1) Penn State Univ., Federico Spada (8), Gail H. Schaefer (3), Howard E. Bond (1, Irving W. Lindenblad (5), Jay B. Holberg (4), Martin A. Barstow (10), Matthew R. Burleigh (10), Miranda Seitz-McLeese (5), Patrick A. Young (9), Pierre Demarque (7), Ronald L. Gilliland (1, Univ. of Arizona, W. David Arnett (6)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-30T18:19:54Z","title":"The Sirius System and its Astrophysical Puzzles: Hubble Space Telescope and Ground-Based Astrometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10625","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:d8585a10f1c2ded925f77da8e7b26e573cbc417533aa0c211030a3644e9eb6ad","target":"record","created_at":"2026-05-18T00:43:51Z","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":"92b31bb9a6adda4e4857d58c9fea91bb137e2d4ede8a1129ec446654cf77f593","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-30T18:19:54Z","title_canon_sha256":"ecc06f9545cbdf77d6c3c5a646a56a4aa899c11fc263f351351591b32de90087"},"schema_version":"1.0","source":{"id":"1703.10625","kind":"arxiv","version":1}},"canonical_sha256":"b65ebeac8a2a2f46099bb668e0f5c92c572f6f603a44c9d589765ab4c64a370d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b65ebeac8a2a2f46099bb668e0f5c92c572f6f603a44c9d589765ab4c64a370d","first_computed_at":"2026-05-18T00:43:51.095711Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:51.095711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f4qWYZWrvWZPZLTtSBBZK7jVCQsrtolbJaO25cSjIaLWNBdfBtxHfcjMy7cPQcrL1YTol6dq67EtkGuPoHDwCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:51.096400Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.10625","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d8585a10f1c2ded925f77da8e7b26e573cbc417533aa0c211030a3644e9eb6ad","sha256:2a5978f24539ab8c46939a550c8433219e889cca8c7b8748dd16882bdf321b16"],"state_sha256":"12da46485ff601071309c1bb5b62f9ef31c99a3d1190505dff3998ab7f0f93ce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6EtwpusvRE5I32Kk5mAfuc0HvN/L5x1aj/UjRHu7bUxTQmo0CiQ99Y1HRaqRNIUZLAaTsaFBqHVY1gj+iP24DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:01:50.109335Z","bundle_sha256":"ea87da39aa5877128d1d0d25492a176b8b046291c945d69a097fc72e2114cd68"}}