{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EOT4YQR7DDGOZXSRR2V3G67YRZ","short_pith_number":"pith:EOT4YQR7","canonical_record":{"source":{"id":"1701.00657","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-03T11:15:08Z","cross_cats_sorted":[],"title_canon_sha256":"f66b275281505b9d603853767bee5a4784dd8cf2803ee414761b71ec54276c55","abstract_canon_sha256":"420b320987b02d4ca80f3e3fe6c81b9485c5b62934284885f3d57a630c66e390"},"schema_version":"1.0"},"canonical_sha256":"23a7cc423f18ccecde518eabb37bf88e52bbf1f7bfbfe0f66e7add7b3faf2c78","source":{"kind":"arxiv","id":"1701.00657","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.00657","created_at":"2026-05-18T00:39:00Z"},{"alias_kind":"arxiv_version","alias_value":"1701.00657v1","created_at":"2026-05-18T00:39:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.00657","created_at":"2026-05-18T00:39:00Z"},{"alias_kind":"pith_short_12","alias_value":"EOT4YQR7DDGO","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EOT4YQR7DDGOZXSR","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EOT4YQR7","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EOT4YQR7DDGOZXSRR2V3G67YRZ","target":"record","payload":{"canonical_record":{"source":{"id":"1701.00657","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-03T11:15:08Z","cross_cats_sorted":[],"title_canon_sha256":"f66b275281505b9d603853767bee5a4784dd8cf2803ee414761b71ec54276c55","abstract_canon_sha256":"420b320987b02d4ca80f3e3fe6c81b9485c5b62934284885f3d57a630c66e390"},"schema_version":"1.0"},"canonical_sha256":"23a7cc423f18ccecde518eabb37bf88e52bbf1f7bfbfe0f66e7add7b3faf2c78","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:00.359920Z","signature_b64":"rBbG19joWLR8693UQ7vxT9UFNBXR1auRS5knt+Il9g/VLEtLClA6sKjlzDczUl6bjczag1m1yrxX+nwHFoN1Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23a7cc423f18ccecde518eabb37bf88e52bbf1f7bfbfe0f66e7add7b3faf2c78","last_reissued_at":"2026-05-18T00:39:00.359295Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:00.359295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.00657","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":"2026-05-18T00:39:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cs+rBrLCodJ+6vG/2ooPLEwAzVgzPd55eaG37C+NAOsxci5RT9dbxzKzPrej1/f7HtZYHrIey2bDPlBoeN0TAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:31:18.719143Z"},"content_sha256":"fe5dee4a94848389d07405c84c14aa042fbfc65654792c55c698e734f68bbb57","schema_version":"1.0","event_id":"sha256:fe5dee4a94848389d07405c84c14aa042fbfc65654792c55c698e734f68bbb57"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EOT4YQR7DDGOZXSRR2V3G67YRZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Outer Regions of the Milky Way","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Francesca Figueras","submitted_at":"2017-01-03T11:15:08Z","abstract_excerpt":"With the start of the Gaia era, the time has come to address the major challenge of deriving the star formation history and evolution of the disk of our MilkyWay. Here we review our present knowledge of the outer regions of the Milky Way disk population. Its stellar content, its structure and its dynamical and chemical evolution are summarized, focussing on our lack of understanding both from an observational and a theoretical viewpoint. We describe the unprecedented data that Gaia and the upcoming ground-based spectroscopic surveys will provide in the next decade. More in detail, we quantify "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.00657","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":"2026-05-18T00:39:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tXEnwSVUeMYGaPSmdEPhqNyalZc9d2RsOtWOJQvR7lp5yOzNKaPmHfHzudO8bjaymJ1qXTbNk1DYBfk0lwOdDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:31:18.719504Z"},"content_sha256":"46bdd61f4ef6bf54e67c01bdaf80c10a4bc852f8ccc6cc746641f6a8be27f9bd","schema_version":"1.0","event_id":"sha256:46bdd61f4ef6bf54e67c01bdaf80c10a4bc852f8ccc6cc746641f6a8be27f9bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EOT4YQR7DDGOZXSRR2V3G67YRZ/bundle.json","state_url":"https://pith.science/pith/EOT4YQR7DDGOZXSRR2V3G67YRZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EOT4YQR7DDGOZXSRR2V3G67YRZ/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":"2026-05-28T02:31:18Z","links":{"resolver":"https://pith.science/pith/EOT4YQR7DDGOZXSRR2V3G67YRZ","bundle":"https://pith.science/pith/EOT4YQR7DDGOZXSRR2V3G67YRZ/bundle.json","state":"https://pith.science/pith/EOT4YQR7DDGOZXSRR2V3G67YRZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EOT4YQR7DDGOZXSRR2V3G67YRZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EOT4YQR7DDGOZXSRR2V3G67YRZ","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":"420b320987b02d4ca80f3e3fe6c81b9485c5b62934284885f3d57a630c66e390","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-03T11:15:08Z","title_canon_sha256":"f66b275281505b9d603853767bee5a4784dd8cf2803ee414761b71ec54276c55"},"schema_version":"1.0","source":{"id":"1701.00657","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.00657","created_at":"2026-05-18T00:39:00Z"},{"alias_kind":"arxiv_version","alias_value":"1701.00657v1","created_at":"2026-05-18T00:39:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.00657","created_at":"2026-05-18T00:39:00Z"},{"alias_kind":"pith_short_12","alias_value":"EOT4YQR7DDGO","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EOT4YQR7DDGOZXSR","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EOT4YQR7","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:46bdd61f4ef6bf54e67c01bdaf80c10a4bc852f8ccc6cc746641f6a8be27f9bd","target":"graph","created_at":"2026-05-18T00:39:00Z","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":"With the start of the Gaia era, the time has come to address the major challenge of deriving the star formation history and evolution of the disk of our MilkyWay. Here we review our present knowledge of the outer regions of the Milky Way disk population. Its stellar content, its structure and its dynamical and chemical evolution are summarized, focussing on our lack of understanding both from an observational and a theoretical viewpoint. We describe the unprecedented data that Gaia and the upcoming ground-based spectroscopic surveys will provide in the next decade. More in detail, we quantify ","authors_text":"Francesca Figueras","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-03T11:15:08Z","title":"Outer Regions of the Milky Way"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.00657","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:fe5dee4a94848389d07405c84c14aa042fbfc65654792c55c698e734f68bbb57","target":"record","created_at":"2026-05-18T00:39:00Z","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":"420b320987b02d4ca80f3e3fe6c81b9485c5b62934284885f3d57a630c66e390","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-03T11:15:08Z","title_canon_sha256":"f66b275281505b9d603853767bee5a4784dd8cf2803ee414761b71ec54276c55"},"schema_version":"1.0","source":{"id":"1701.00657","kind":"arxiv","version":1}},"canonical_sha256":"23a7cc423f18ccecde518eabb37bf88e52bbf1f7bfbfe0f66e7add7b3faf2c78","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23a7cc423f18ccecde518eabb37bf88e52bbf1f7bfbfe0f66e7add7b3faf2c78","first_computed_at":"2026-05-18T00:39:00.359295Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:00.359295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rBbG19joWLR8693UQ7vxT9UFNBXR1auRS5knt+Il9g/VLEtLClA6sKjlzDczUl6bjczag1m1yrxX+nwHFoN1Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:00.359920Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.00657","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe5dee4a94848389d07405c84c14aa042fbfc65654792c55c698e734f68bbb57","sha256:46bdd61f4ef6bf54e67c01bdaf80c10a4bc852f8ccc6cc746641f6a8be27f9bd"],"state_sha256":"c191e29471fedf1cd23ec540cb12707365c25a61a3488975045eecd200111ec2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N5hzdZHGmePBDzjqoIzWhHMgpqNPWWcSO5Y3YQMnw7ayLJz5tkb4KEBoAwuP/EaPIiSLltou2l7E1nPs0u8nAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T02:31:18.721467Z","bundle_sha256":"d16b059c64f76b2f6609afcd4d9fcddd2f74580c3fa292a7324b7a5b66f998c5"}}