{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:R3SXW3TDLMF3XQ5UC4LTRL6V3G","short_pith_number":"pith:R3SXW3TD","canonical_record":{"source":{"id":"1902.05268","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-14T09:01:14Z","cross_cats_sorted":[],"title_canon_sha256":"87b898f8cc09081519f9c914d534ffc272f77cacd94170747fda11ac920b8d8d","abstract_canon_sha256":"669cecf524a40e79facaaf91563fe804538ba4a3ba9c327e558278eef729dacd"},"schema_version":"1.0"},"canonical_sha256":"8ee57b6e635b0bbbc3b4171738afd5d992039812a68fd8a214d19b844ed40f18","source":{"kind":"arxiv","id":"1902.05268","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.05268","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"arxiv_version","alias_value":"1902.05268v2","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.05268","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"pith_short_12","alias_value":"R3SXW3TDLMF3","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"pith_short_16","alias_value":"R3SXW3TDLMF3XQ5U","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"pith_short_8","alias_value":"R3SXW3TD","created_at":"2026-07-05T00:03:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:R3SXW3TDLMF3XQ5UC4LTRL6V3G","target":"record","payload":{"canonical_record":{"source":{"id":"1902.05268","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-14T09:01:14Z","cross_cats_sorted":[],"title_canon_sha256":"87b898f8cc09081519f9c914d534ffc272f77cacd94170747fda11ac920b8d8d","abstract_canon_sha256":"669cecf524a40e79facaaf91563fe804538ba4a3ba9c327e558278eef729dacd"},"schema_version":"1.0"},"canonical_sha256":"8ee57b6e635b0bbbc3b4171738afd5d992039812a68fd8a214d19b844ed40f18","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:03:32.430727Z","signature_b64":"gC9lLNNvtLYzPYIGTxTmN1FVkmp303weGXO3LmScDEzE5+n4kKg9rRR62uDIcmtPWeIx4Dm2OZtMsARzjAThAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8ee57b6e635b0bbbc3b4171738afd5d992039812a68fd8a214d19b844ed40f18","last_reissued_at":"2026-07-05T00:03:32.430254Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:03:32.430254Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.05268","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":"2026-07-05T00:03:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"18HBnGcEmb4x2HhhLMAoFH1EW4axWSdFK+sO54WldXKx1CCkrBG3vux+ZDoYmD01X4h3RphMRq/UWxhp+x53Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:27:56.871860Z"},"content_sha256":"9948ea94ffacfa3ca4d46b44241b4e9a605e9c4b6bc711fa90f5a333f58652a5","schema_version":"1.0","event_id":"sha256:9948ea94ffacfa3ca4d46b44241b4e9a605e9c4b6bc711fa90f5a333f58652a5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:R3SXW3TDLMF3XQ5UC4LTRL6V3G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The tilt of the velocity ellipsoid in the Milky Way with Gaia DR2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Amina Helmi, Jorrit H. J. Hagen, Lorenzo Posti, P. Tim de Zeeuw","submitted_at":"2019-02-14T09:01:14Z","abstract_excerpt":"The velocity distribution of stars is a sensitive probe of the gravitational potential of the Galaxy, and hence of its dark matter distribution. In particular, the shape of the dark halo (e.g. spherical, oblate, or prolate) determines velocity correlations, and different halo geometries are expected to result in measurable differences. Here we explore and interpret the correlations in the $(v_R, v_z)$-velocity distribution as a function of position in the Milky Way. We selected a high-quality sample of stars from the Gaia DR2 catalogue and characterised the orientation of the velocity distribu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.05268","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1902.05268/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:03:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I8DU76FxzdxqLCu+YP+4CmMH/bHeGQlucU4SaSNUPFrTcaUwtgB3JmEWrZnSo5m9dFhyPb7HtnMqZEid3grTBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T00:27:56.872691Z"},"content_sha256":"91b5dc4e04af97b9b873376ac92a1ee33a092e4ad78c38c5b9296083d6644a1f","schema_version":"1.0","event_id":"sha256:91b5dc4e04af97b9b873376ac92a1ee33a092e4ad78c38c5b9296083d6644a1f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R3SXW3TDLMF3XQ5UC4LTRL6V3G/bundle.json","state_url":"https://pith.science/pith/R3SXW3TDLMF3XQ5UC4LTRL6V3G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R3SXW3TDLMF3XQ5UC4LTRL6V3G/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":"2026-08-18T00:27:56Z","links":{"resolver":"https://pith.science/pith/R3SXW3TDLMF3XQ5UC4LTRL6V3G","bundle":"https://pith.science/pith/R3SXW3TDLMF3XQ5UC4LTRL6V3G/bundle.json","state":"https://pith.science/pith/R3SXW3TDLMF3XQ5UC4LTRL6V3G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R3SXW3TDLMF3XQ5UC4LTRL6V3G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:R3SXW3TDLMF3XQ5UC4LTRL6V3G","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":"669cecf524a40e79facaaf91563fe804538ba4a3ba9c327e558278eef729dacd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-14T09:01:14Z","title_canon_sha256":"87b898f8cc09081519f9c914d534ffc272f77cacd94170747fda11ac920b8d8d"},"schema_version":"1.0","source":{"id":"1902.05268","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.05268","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"arxiv_version","alias_value":"1902.05268v2","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.05268","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"pith_short_12","alias_value":"R3SXW3TDLMF3","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"pith_short_16","alias_value":"R3SXW3TDLMF3XQ5U","created_at":"2026-07-05T00:03:32Z"},{"alias_kind":"pith_short_8","alias_value":"R3SXW3TD","created_at":"2026-07-05T00:03:32Z"}],"graph_snapshots":[{"event_id":"sha256:91b5dc4e04af97b9b873376ac92a1ee33a092e4ad78c38c5b9296083d6644a1f","target":"graph","created_at":"2026-07-05T00:03:32Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1902.05268/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The velocity distribution of stars is a sensitive probe of the gravitational potential of the Galaxy, and hence of its dark matter distribution. In particular, the shape of the dark halo (e.g. spherical, oblate, or prolate) determines velocity correlations, and different halo geometries are expected to result in measurable differences. Here we explore and interpret the correlations in the $(v_R, v_z)$-velocity distribution as a function of position in the Milky Way. We selected a high-quality sample of stars from the Gaia DR2 catalogue and characterised the orientation of the velocity distribu","authors_text":"Amina Helmi, Jorrit H. J. Hagen, Lorenzo Posti, P. Tim de Zeeuw","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-14T09:01:14Z","title":"The tilt of the velocity ellipsoid in the Milky Way with Gaia DR2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.05268","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":"sha256:9948ea94ffacfa3ca4d46b44241b4e9a605e9c4b6bc711fa90f5a333f58652a5","target":"record","created_at":"2026-07-05T00:03:32Z","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":"669cecf524a40e79facaaf91563fe804538ba4a3ba9c327e558278eef729dacd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-14T09:01:14Z","title_canon_sha256":"87b898f8cc09081519f9c914d534ffc272f77cacd94170747fda11ac920b8d8d"},"schema_version":"1.0","source":{"id":"1902.05268","kind":"arxiv","version":2}},"canonical_sha256":"8ee57b6e635b0bbbc3b4171738afd5d992039812a68fd8a214d19b844ed40f18","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8ee57b6e635b0bbbc3b4171738afd5d992039812a68fd8a214d19b844ed40f18","first_computed_at":"2026-07-05T00:03:32.430254Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:03:32.430254Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gC9lLNNvtLYzPYIGTxTmN1FVkmp303weGXO3LmScDEzE5+n4kKg9rRR62uDIcmtPWeIx4Dm2OZtMsARzjAThAw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:03:32.430727Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.05268","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9948ea94ffacfa3ca4d46b44241b4e9a605e9c4b6bc711fa90f5a333f58652a5","sha256:91b5dc4e04af97b9b873376ac92a1ee33a092e4ad78c38c5b9296083d6644a1f"],"state_sha256":"f77ccc280b2b62ead49f20195d659a958155deb9e770fae1ef2cf139578e8e47"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rr3biqkb0kHVmX+ZyeK0fboteJg1UIzUa+yzZFOEAGuMXphvtDKHuuWM4oErhpzDcdX4ItwxJ1qW++U4MoLcCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T00:27:56.884439Z","bundle_sha256":"12546685f14a255e27aeb79fb48cf790b5a059a17f049f57bda67fd386ebc004"}}