{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:A5PEUN276R6XHZUBEZ4GIJ3DRV","short_pith_number":"pith:A5PEUN27","canonical_record":{"source":{"id":"1805.02332","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T03:30:31Z","cross_cats_sorted":[],"title_canon_sha256":"76ee5f30855ab429019418365597f7ceceec15ca049ad19f9a6e47277a8fd445","abstract_canon_sha256":"d8a62d1a639527f567ad8eedb46045b787fa91c91514e3e6614bd230c399bb4e"},"schema_version":"1.0"},"canonical_sha256":"075e4a375ff47d73e68126786427638d6aa888b64c47c23b861f12bc1a45b16f","source":{"kind":"arxiv","id":"1805.02332","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02332","created_at":"2026-05-18T00:12:17Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02332v1","created_at":"2026-05-18T00:12:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02332","created_at":"2026-05-18T00:12:17Z"},{"alias_kind":"pith_short_12","alias_value":"A5PEUN276R6X","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"A5PEUN276R6XHZUB","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"A5PEUN27","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:A5PEUN276R6XHZUBEZ4GIJ3DRV","target":"record","payload":{"canonical_record":{"source":{"id":"1805.02332","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T03:30:31Z","cross_cats_sorted":[],"title_canon_sha256":"76ee5f30855ab429019418365597f7ceceec15ca049ad19f9a6e47277a8fd445","abstract_canon_sha256":"d8a62d1a639527f567ad8eedb46045b787fa91c91514e3e6614bd230c399bb4e"},"schema_version":"1.0"},"canonical_sha256":"075e4a375ff47d73e68126786427638d6aa888b64c47c23b861f12bc1a45b16f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:17.050694Z","signature_b64":"8Qwq1AKXaI14+CSyrZNsWC3SJGUy3oGpBuSgwSv0ibEPC1NVdMWVUQqNQtllFqRCj/O+hZv9XcRwZnuP4GcqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"075e4a375ff47d73e68126786427638d6aa888b64c47c23b861f12bc1a45b16f","last_reissued_at":"2026-05-18T00:12:17.049947Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:17.049947Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.02332","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":"2026-05-18T00:12:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eoSnsxRgowlmcpOJdWRCIIYINIfADEHjiNrttm4Usb/heJio7bC7r8vG/AGVn4KOfGL+M1Z4phmnVZHAnuYNAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T02:28:08.094680Z"},"content_sha256":"7d1ca96496a2a638f5ca582b5ca71f92ec2200a493b41c4bc344a7dbc9d71ac4","schema_version":"1.0","event_id":"sha256:7d1ca96496a2a638f5ca582b5ca71f92ec2200a493b41c4bc344a7dbc9d71ac4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:A5PEUN276R6XHZUBEZ4GIJ3DRV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Lives of Stars: Insights From the TGAS-RAVE-LAMOST Dataset","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"John J. Vickers, Martin C. Smith","submitted_at":"2018-05-07T03:30:31Z","abstract_excerpt":"In this paper we investigate how the chemical and kinematic properties of stars vary as a function of age. Using data from a variety of photometric, astrometric and spectroscopic surveys, we calculate the ages, phase space information and orbits for $\\sim$125,000 stars covering a wide range of stellar parameters.\n  We find indications that the inner regions of the disk reached high levels of enrichment early, while the outer regions were more substantially enriched in intermediate and recent epochs. We consider these enrichment histories through comparison of the ages of stars, their metallici"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02332","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":"2026-05-18T00:12:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LooVO6qaFyo3/E1sucm4MHEOQsf93UHsF2K+venxUPcBQkAuQhWqrtVO79wDr3IUDaRUij2NXBEbI4Hf2jOnDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T02:28:08.095326Z"},"content_sha256":"5e8cc48c82df64ab7537d2ab3cbfeb13d0be1573a4a2d22ba2b30d10d0323d47","schema_version":"1.0","event_id":"sha256:5e8cc48c82df64ab7537d2ab3cbfeb13d0be1573a4a2d22ba2b30d10d0323d47"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A5PEUN276R6XHZUBEZ4GIJ3DRV/bundle.json","state_url":"https://pith.science/pith/A5PEUN276R6XHZUBEZ4GIJ3DRV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A5PEUN276R6XHZUBEZ4GIJ3DRV/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":"2026-06-05T02:28:08Z","links":{"resolver":"https://pith.science/pith/A5PEUN276R6XHZUBEZ4GIJ3DRV","bundle":"https://pith.science/pith/A5PEUN276R6XHZUBEZ4GIJ3DRV/bundle.json","state":"https://pith.science/pith/A5PEUN276R6XHZUBEZ4GIJ3DRV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A5PEUN276R6XHZUBEZ4GIJ3DRV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:A5PEUN276R6XHZUBEZ4GIJ3DRV","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":"d8a62d1a639527f567ad8eedb46045b787fa91c91514e3e6614bd230c399bb4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T03:30:31Z","title_canon_sha256":"76ee5f30855ab429019418365597f7ceceec15ca049ad19f9a6e47277a8fd445"},"schema_version":"1.0","source":{"id":"1805.02332","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.02332","created_at":"2026-05-18T00:12:17Z"},{"alias_kind":"arxiv_version","alias_value":"1805.02332v1","created_at":"2026-05-18T00:12:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.02332","created_at":"2026-05-18T00:12:17Z"},{"alias_kind":"pith_short_12","alias_value":"A5PEUN276R6X","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"A5PEUN276R6XHZUB","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"A5PEUN27","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:5e8cc48c82df64ab7537d2ab3cbfeb13d0be1573a4a2d22ba2b30d10d0323d47","target":"graph","created_at":"2026-05-18T00:12:17Z","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":"In this paper we investigate how the chemical and kinematic properties of stars vary as a function of age. Using data from a variety of photometric, astrometric and spectroscopic surveys, we calculate the ages, phase space information and orbits for $\\sim$125,000 stars covering a wide range of stellar parameters.\n  We find indications that the inner regions of the disk reached high levels of enrichment early, while the outer regions were more substantially enriched in intermediate and recent epochs. We consider these enrichment histories through comparison of the ages of stars, their metallici","authors_text":"John J. Vickers, Martin C. Smith","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T03:30:31Z","title":"The Lives of Stars: Insights From the TGAS-RAVE-LAMOST Dataset"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02332","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":"sha256:7d1ca96496a2a638f5ca582b5ca71f92ec2200a493b41c4bc344a7dbc9d71ac4","target":"record","created_at":"2026-05-18T00:12:17Z","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":"d8a62d1a639527f567ad8eedb46045b787fa91c91514e3e6614bd230c399bb4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-05-07T03:30:31Z","title_canon_sha256":"76ee5f30855ab429019418365597f7ceceec15ca049ad19f9a6e47277a8fd445"},"schema_version":"1.0","source":{"id":"1805.02332","kind":"arxiv","version":1}},"canonical_sha256":"075e4a375ff47d73e68126786427638d6aa888b64c47c23b861f12bc1a45b16f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"075e4a375ff47d73e68126786427638d6aa888b64c47c23b861f12bc1a45b16f","first_computed_at":"2026-05-18T00:12:17.049947Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:17.049947Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8Qwq1AKXaI14+CSyrZNsWC3SJGUy3oGpBuSgwSv0ibEPC1NVdMWVUQqNQtllFqRCj/O+hZv9XcRwZnuP4GcqBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:17.050694Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.02332","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7d1ca96496a2a638f5ca582b5ca71f92ec2200a493b41c4bc344a7dbc9d71ac4","sha256:5e8cc48c82df64ab7537d2ab3cbfeb13d0be1573a4a2d22ba2b30d10d0323d47"],"state_sha256":"f1ec5ee0bf85052b2116afb892f3d1bb30cc0585e8675a17eaf19c9fb744abbe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d34yB1SfBrYIy3UlG8ly890Sdw5AaRB9otsPeKnFbtlbpt9MMQfQZzHvuajf5MDL+gIqFdFD56Hd5mbI90V3Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T02:28:08.098575Z","bundle_sha256":"94c1682752797443d1177e784a6b36123252f97d677eca4efed01aed55a7634d"}}