{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MS3IQXTGEHKAB5F5DWCN22JQFF","short_pith_number":"pith:MS3IQXTG","canonical_record":{"source":{"id":"1811.00813","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-02T10:52:03Z","cross_cats_sorted":[],"title_canon_sha256":"dd58e9f6b3c1d7060ed393d1d37e2c8d780ecc6d85b2b6de75fcc069673687a7","abstract_canon_sha256":"b0580645616850f28d0459ee4ee269ad6e1b7e2fae8c99723d035fd6b7f5552a"},"schema_version":"1.0"},"canonical_sha256":"64b6885e6621d400f4bd1d84dd69302951bcb2905127b7d58f4157dc2b505b03","source":{"kind":"arxiv","id":"1811.00813","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.00813","created_at":"2026-05-18T00:01:25Z"},{"alias_kind":"arxiv_version","alias_value":"1811.00813v1","created_at":"2026-05-18T00:01:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.00813","created_at":"2026-05-18T00:01:25Z"},{"alias_kind":"pith_short_12","alias_value":"MS3IQXTGEHKA","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MS3IQXTGEHKAB5F5","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MS3IQXTG","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MS3IQXTGEHKAB5F5DWCN22JQFF","target":"record","payload":{"canonical_record":{"source":{"id":"1811.00813","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-02T10:52:03Z","cross_cats_sorted":[],"title_canon_sha256":"dd58e9f6b3c1d7060ed393d1d37e2c8d780ecc6d85b2b6de75fcc069673687a7","abstract_canon_sha256":"b0580645616850f28d0459ee4ee269ad6e1b7e2fae8c99723d035fd6b7f5552a"},"schema_version":"1.0"},"canonical_sha256":"64b6885e6621d400f4bd1d84dd69302951bcb2905127b7d58f4157dc2b505b03","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:25.218985Z","signature_b64":"OZXdzz/SuOJhDUuPhAZJEUxPfvjkgErm0sO3qwhfFscWtx287M4s6yqfCzpsnZNajwJH0FBFZkJM7bGExY5CBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64b6885e6621d400f4bd1d84dd69302951bcb2905127b7d58f4157dc2b505b03","last_reissued_at":"2026-05-18T00:01:25.218632Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:25.218632Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.00813","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":"2026-05-18T00:01:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g0RnolHZN8JOfO1RYgTwTmkKpm78em5sq7ARzV0oTSHvPeMYA5+4tNA4y8UYou2Epk498m2dvqiu72OmxIDLAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T11:21:49.293008Z"},"content_sha256":"522f4ad08f6ba8248956db81646b31ee6139133f6118619dd2cfa8dc39b02854","schema_version":"1.0","event_id":"sha256:522f4ad08f6ba8248956db81646b31ee6139133f6118619dd2cfa8dc39b02854"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MS3IQXTGEHKAB5F5DWCN22JQFF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Speckle Interferometry at the U.S. Naval Observatory. XXIII","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Brian D. Mason, Jordan D. Josties, Sean E. Urban, William I. Hartkopf","submitted_at":"2018-11-02T10:52:03Z","abstract_excerpt":"The results of 3,989 intensified CCD observations of double stars, made with the 26-inch refractor of the U.S. Naval Observatory, are presented. Each observation of a system represents a combination of over two thousand short-exposure images. These observations are averaged into 1,911 mean relative positions and range in separation from 0.289 to 128.638, with a median separation of 8.669. Four orbits are improved. This is the 23rd in this series of papers and covers the period 4 January 2017 through 13 September 2017."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00813","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":"2026-05-18T00:01:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8ucAV2jhap0eiHXkcD4Ub1XK57mvpPlgdL16Hg8JakiIbhCb4IJNKHCOuhzWgcmwSkJQTj5RARkzQf7vse1pDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T11:21:49.293749Z"},"content_sha256":"d043f7fb147f87d667318cd1a213d5eb285ec30233356f8aa63e8114f1dba313","schema_version":"1.0","event_id":"sha256:d043f7fb147f87d667318cd1a213d5eb285ec30233356f8aa63e8114f1dba313"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MS3IQXTGEHKAB5F5DWCN22JQFF/bundle.json","state_url":"https://pith.science/pith/MS3IQXTGEHKAB5F5DWCN22JQFF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MS3IQXTGEHKAB5F5DWCN22JQFF/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":"2026-05-23T11:21:49Z","links":{"resolver":"https://pith.science/pith/MS3IQXTGEHKAB5F5DWCN22JQFF","bundle":"https://pith.science/pith/MS3IQXTGEHKAB5F5DWCN22JQFF/bundle.json","state":"https://pith.science/pith/MS3IQXTGEHKAB5F5DWCN22JQFF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MS3IQXTGEHKAB5F5DWCN22JQFF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MS3IQXTGEHKAB5F5DWCN22JQFF","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":"b0580645616850f28d0459ee4ee269ad6e1b7e2fae8c99723d035fd6b7f5552a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-02T10:52:03Z","title_canon_sha256":"dd58e9f6b3c1d7060ed393d1d37e2c8d780ecc6d85b2b6de75fcc069673687a7"},"schema_version":"1.0","source":{"id":"1811.00813","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.00813","created_at":"2026-05-18T00:01:25Z"},{"alias_kind":"arxiv_version","alias_value":"1811.00813v1","created_at":"2026-05-18T00:01:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.00813","created_at":"2026-05-18T00:01:25Z"},{"alias_kind":"pith_short_12","alias_value":"MS3IQXTGEHKA","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MS3IQXTGEHKAB5F5","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MS3IQXTG","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:d043f7fb147f87d667318cd1a213d5eb285ec30233356f8aa63e8114f1dba313","target":"graph","created_at":"2026-05-18T00:01:25Z","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":"The results of 3,989 intensified CCD observations of double stars, made with the 26-inch refractor of the U.S. Naval Observatory, are presented. Each observation of a system represents a combination of over two thousand short-exposure images. These observations are averaged into 1,911 mean relative positions and range in separation from 0.289 to 128.638, with a median separation of 8.669. Four orbits are improved. This is the 23rd in this series of papers and covers the period 4 January 2017 through 13 September 2017.","authors_text":"Brian D. Mason, Jordan D. Josties, Sean E. Urban, William I. Hartkopf","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-02T10:52:03Z","title":"Speckle Interferometry at the U.S. Naval Observatory. XXIII"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00813","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":"sha256:522f4ad08f6ba8248956db81646b31ee6139133f6118619dd2cfa8dc39b02854","target":"record","created_at":"2026-05-18T00:01:25Z","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":"b0580645616850f28d0459ee4ee269ad6e1b7e2fae8c99723d035fd6b7f5552a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-11-02T10:52:03Z","title_canon_sha256":"dd58e9f6b3c1d7060ed393d1d37e2c8d780ecc6d85b2b6de75fcc069673687a7"},"schema_version":"1.0","source":{"id":"1811.00813","kind":"arxiv","version":1}},"canonical_sha256":"64b6885e6621d400f4bd1d84dd69302951bcb2905127b7d58f4157dc2b505b03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64b6885e6621d400f4bd1d84dd69302951bcb2905127b7d58f4157dc2b505b03","first_computed_at":"2026-05-18T00:01:25.218632Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:25.218632Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OZXdzz/SuOJhDUuPhAZJEUxPfvjkgErm0sO3qwhfFscWtx287M4s6yqfCzpsnZNajwJH0FBFZkJM7bGExY5CBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:25.218985Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.00813","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:522f4ad08f6ba8248956db81646b31ee6139133f6118619dd2cfa8dc39b02854","sha256:d043f7fb147f87d667318cd1a213d5eb285ec30233356f8aa63e8114f1dba313"],"state_sha256":"a7778374e2f84f92c23927f6a786f1a82651ebac56c14ab0da4755a2063a957f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IPg+jfkjfH3ATmF6j/L+bX5bdRWG/h+OwwizGOGoIzZd0jUDGGgwOSIwk0gMQC8q+rTYZ704f/A5RCS+ZzSzAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T11:21:49.298261Z","bundle_sha256":"8c39387eecee5f1e18ffc8f72b47433873ed698f9d717eb70db4204a338c644e"}}