{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:XHOQLT3DUXZASPGCLLUHDTP6QL","short_pith_number":"pith:XHOQLT3D","canonical_record":{"source":{"id":"1707.05226","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-17T15:23:32Z","cross_cats_sorted":[],"title_canon_sha256":"221841e8948f65831cb443f819a2955a89def578d621040be6ebb922b120f1ac","abstract_canon_sha256":"5cabf1f6911e064d192cfe258d22a89c217c49c98a69d9fad5905db8b3012205"},"schema_version":"1.0"},"canonical_sha256":"b9dd05cf63a5f2093cc25ae871cdfe82df374223964a7ceb32020d2734c93090","source":{"kind":"arxiv","id":"1707.05226","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.05226","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"arxiv_version","alias_value":"1707.05226v1","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.05226","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"pith_short_12","alias_value":"XHOQLT3DUXZA","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"XHOQLT3DUXZASPGC","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"XHOQLT3D","created_at":"2026-05-18T12:31:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:XHOQLT3DUXZASPGCLLUHDTP6QL","target":"record","payload":{"canonical_record":{"source":{"id":"1707.05226","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-17T15:23:32Z","cross_cats_sorted":[],"title_canon_sha256":"221841e8948f65831cb443f819a2955a89def578d621040be6ebb922b120f1ac","abstract_canon_sha256":"5cabf1f6911e064d192cfe258d22a89c217c49c98a69d9fad5905db8b3012205"},"schema_version":"1.0"},"canonical_sha256":"b9dd05cf63a5f2093cc25ae871cdfe82df374223964a7ceb32020d2734c93090","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:32.331193Z","signature_b64":"LggOWuUUhMj7e8cUWeJL+n5fK3JR16hfGKqmC6JwZqxXr6ZacnlqAu30haCrFuOeb/i0WvSNmUhf1M9tSngEBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9dd05cf63a5f2093cc25ae871cdfe82df374223964a7ceb32020d2734c93090","last_reissued_at":"2026-05-18T00:13:32.330567Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:32.330567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.05226","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":"2026-05-18T00:13:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w2UGf5FYPFoyUB3b/4bhEDjmhvF8wa2+3qG6NbZwzEN3pCgK96Ouf3eSVj5M/3XsGytUG9jmNuxy5jZF3XkEDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:31:59.977019Z"},"content_sha256":"6269259e57441f8decaf8c543eeb2eea45a9c8a982f02503a449ada2630bfaf4","schema_version":"1.0","event_id":"sha256:6269259e57441f8decaf8c543eeb2eea45a9c8a982f02503a449ada2630bfaf4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:XHOQLT3DUXZASPGCLLUHDTP6QL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Search for Galactic warp signal in Gaia DR1 proper motions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Spagna, E. Poggio, M. G. Lattanzi, R. Drimmel, R. L. Smart.","submitted_at":"2017-07-17T15:23:32Z","abstract_excerpt":"The nature and origin of the Galactic warp represent one of the open questions posed by Galactic evolution. Thanks to Gaia high precision absolute astrometry, steps towards the understanding of the warp's dynamical nature can be made. Indeed, proper motions for long-lived stable warp are expected to show measurable trends in the component vertical to the galactic plane. Within this context, we search for the kinematic warp signal in the first Gaia data release (DR1). By analyzing distant spectroscopically-identified OB stars in the Hipparcos subset in Gaia DR1, we find that the kinematic trend"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.05226","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":"2026-05-18T00:13:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xRPn25RavJNAlG9cuzt2qR7cDeC26UOsB4RofZe/vJHoqYn9woNJpzJo48JfHxmM/hZT2tyBtx2k+pi4PvslAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:31:59.977746Z"},"content_sha256":"513c1f6b32feaada003d7ce30c4ac0adf96e2c7bd79eeedc6491e80be266b61b","schema_version":"1.0","event_id":"sha256:513c1f6b32feaada003d7ce30c4ac0adf96e2c7bd79eeedc6491e80be266b61b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XHOQLT3DUXZASPGCLLUHDTP6QL/bundle.json","state_url":"https://pith.science/pith/XHOQLT3DUXZASPGCLLUHDTP6QL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XHOQLT3DUXZASPGCLLUHDTP6QL/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":"2026-05-25T17:31:59Z","links":{"resolver":"https://pith.science/pith/XHOQLT3DUXZASPGCLLUHDTP6QL","bundle":"https://pith.science/pith/XHOQLT3DUXZASPGCLLUHDTP6QL/bundle.json","state":"https://pith.science/pith/XHOQLT3DUXZASPGCLLUHDTP6QL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XHOQLT3DUXZASPGCLLUHDTP6QL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:XHOQLT3DUXZASPGCLLUHDTP6QL","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":"5cabf1f6911e064d192cfe258d22a89c217c49c98a69d9fad5905db8b3012205","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-17T15:23:32Z","title_canon_sha256":"221841e8948f65831cb443f819a2955a89def578d621040be6ebb922b120f1ac"},"schema_version":"1.0","source":{"id":"1707.05226","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.05226","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"arxiv_version","alias_value":"1707.05226v1","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.05226","created_at":"2026-05-18T00:13:32Z"},{"alias_kind":"pith_short_12","alias_value":"XHOQLT3DUXZA","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"XHOQLT3DUXZASPGC","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"XHOQLT3D","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:513c1f6b32feaada003d7ce30c4ac0adf96e2c7bd79eeedc6491e80be266b61b","target":"graph","created_at":"2026-05-18T00:13:32Z","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 nature and origin of the Galactic warp represent one of the open questions posed by Galactic evolution. Thanks to Gaia high precision absolute astrometry, steps towards the understanding of the warp's dynamical nature can be made. Indeed, proper motions for long-lived stable warp are expected to show measurable trends in the component vertical to the galactic plane. Within this context, we search for the kinematic warp signal in the first Gaia data release (DR1). By analyzing distant spectroscopically-identified OB stars in the Hipparcos subset in Gaia DR1, we find that the kinematic trend","authors_text":"A. Spagna, E. Poggio, M. G. Lattanzi, R. Drimmel, R. L. Smart.","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-17T15:23:32Z","title":"Search for Galactic warp signal in Gaia DR1 proper motions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.05226","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":"sha256:6269259e57441f8decaf8c543eeb2eea45a9c8a982f02503a449ada2630bfaf4","target":"record","created_at":"2026-05-18T00:13:32Z","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":"5cabf1f6911e064d192cfe258d22a89c217c49c98a69d9fad5905db8b3012205","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-17T15:23:32Z","title_canon_sha256":"221841e8948f65831cb443f819a2955a89def578d621040be6ebb922b120f1ac"},"schema_version":"1.0","source":{"id":"1707.05226","kind":"arxiv","version":1}},"canonical_sha256":"b9dd05cf63a5f2093cc25ae871cdfe82df374223964a7ceb32020d2734c93090","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9dd05cf63a5f2093cc25ae871cdfe82df374223964a7ceb32020d2734c93090","first_computed_at":"2026-05-18T00:13:32.330567Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:32.330567Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LggOWuUUhMj7e8cUWeJL+n5fK3JR16hfGKqmC6JwZqxXr6ZacnlqAu30haCrFuOeb/i0WvSNmUhf1M9tSngEBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:32.331193Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.05226","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6269259e57441f8decaf8c543eeb2eea45a9c8a982f02503a449ada2630bfaf4","sha256:513c1f6b32feaada003d7ce30c4ac0adf96e2c7bd79eeedc6491e80be266b61b"],"state_sha256":"f98beae21569c214d27b00620956441ac8740eeaa62ec51af4c66ec183207178"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ejnvAhj0Or+wSd5zupMqpem/1mkWJRbH6pRf2LK7SztwUPRYyg5bW14+6jcX+GB5/MIJ6W4hOZXge1/OXnoLBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:31:59.981633Z","bundle_sha256":"ea3b5430b9a3d8a788cdc047ac28c4938d9434923e84594787afe5b29112c036"}}