{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:YBJBQJU65FTUOOETEGEKD7BJV4","short_pith_number":"pith:YBJBQJU6","schema_version":"1.0","canonical_sha256":"c05218269ee9674738932188a1fc29af0493a1d60f5ea25fcc3a015acc6f47b9","source":{"kind":"arxiv","id":"1512.01925","version":2},"attestation_state":"computed","paper":{"title":"The Baltic Meetings 1957 to 1967","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"physics.hist-ph","authors_text":"Erik H{\\o}g","submitted_at":"2015-12-07T06:18:06Z","abstract_excerpt":"The Baltic meetings of astronomers from Northern Germany and Scandinavia began in 1957 and gathered up to 70 participants. Reports of the presentations are available from all meetings, providing an overview of the interests of astronomers in this part of the world 50 years ago. Most interesting to see for a young astronomer in our days, I think, is that a large part of the time was about astrometry. This focus on astrometry was the basis for the scientific knowhow which made the idea of space astrometry realistic, resulting in the approval by ESA of the first astrometry satellite Hipparcos in "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1512.01925","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2015-12-07T06:18:06Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"ecf7694e2b7146710b41e0772be9c8fcd03d230d485abd9f235ac39507dce4dd","abstract_canon_sha256":"f5275cd01aec9593cb71314daa08a815f695403fb1457cb85f9145cf562d1019"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:44.182186Z","signature_b64":"kWYcWWQ0acksKX/6qaZkqy67IIReuN2qRmN77scXUNcK7WbklUO2GgGxGmTh9RuZ8wfPrXOULdUqVGW8dbm3AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c05218269ee9674738932188a1fc29af0493a1d60f5ea25fcc3a015acc6f47b9","last_reissued_at":"2026-05-18T00:38:44.181580Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:44.181580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Baltic Meetings 1957 to 1967","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"physics.hist-ph","authors_text":"Erik H{\\o}g","submitted_at":"2015-12-07T06:18:06Z","abstract_excerpt":"The Baltic meetings of astronomers from Northern Germany and Scandinavia began in 1957 and gathered up to 70 participants. Reports of the presentations are available from all meetings, providing an overview of the interests of astronomers in this part of the world 50 years ago. Most interesting to see for a young astronomer in our days, I think, is that a large part of the time was about astrometry. This focus on astrometry was the basis for the scientific knowhow which made the idea of space astrometry realistic, resulting in the approval by ESA of the first astrometry satellite Hipparcos in "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01925","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1512.01925","created_at":"2026-05-18T00:38:44.181684+00:00"},{"alias_kind":"arxiv_version","alias_value":"1512.01925v2","created_at":"2026-05-18T00:38:44.181684+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01925","created_at":"2026-05-18T00:38:44.181684+00:00"},{"alias_kind":"pith_short_12","alias_value":"YBJBQJU65FTU","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_16","alias_value":"YBJBQJU65FTUOOET","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_8","alias_value":"YBJBQJU6","created_at":"2026-05-18T12:29:50.041715+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4","json":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4.json","graph_json":"https://pith.science/api/pith-number/YBJBQJU65FTUOOETEGEKD7BJV4/graph.json","events_json":"https://pith.science/api/pith-number/YBJBQJU65FTUOOETEGEKD7BJV4/events.json","paper":"https://pith.science/paper/YBJBQJU6"},"agent_actions":{"view_html":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4","download_json":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4.json","view_paper":"https://pith.science/paper/YBJBQJU6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1512.01925&json=true","fetch_graph":"https://pith.science/api/pith-number/YBJBQJU65FTUOOETEGEKD7BJV4/graph.json","fetch_events":"https://pith.science/api/pith-number/YBJBQJU65FTUOOETEGEKD7BJV4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4/action/storage_attestation","attest_author":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4/action/author_attestation","sign_citation":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4/action/citation_signature","submit_replication":"https://pith.science/pith/YBJBQJU65FTUOOETEGEKD7BJV4/action/replication_record"}},"created_at":"2026-05-18T00:38:44.181684+00:00","updated_at":"2026-05-18T00:38:44.181684+00:00"}