{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UAYDUPQJVZKDIBDGUL2GILPZX3","short_pith_number":"pith:UAYDUPQJ","canonical_record":{"source":{"id":"1902.01695","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-05T14:13:15Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"08aea9fb2299f5606c46c722f92e7779f222627cda34731128e63211382affe5","abstract_canon_sha256":"32b6293df2917fab6528cb2f3539b60c49668558ff5bccff6b5415f722d00290"},"schema_version":"1.0"},"canonical_sha256":"a0303a3e09ae54340466a2f4642df9becc1e5b511cde63cf94d6170e0b64cf87","source":{"kind":"arxiv","id":"1902.01695","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01695","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01695v1","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01695","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"pith_short_12","alias_value":"UAYDUPQJVZKD","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UAYDUPQJVZKDIBDG","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UAYDUPQJ","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UAYDUPQJVZKDIBDGUL2GILPZX3","target":"record","payload":{"canonical_record":{"source":{"id":"1902.01695","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-05T14:13:15Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"08aea9fb2299f5606c46c722f92e7779f222627cda34731128e63211382affe5","abstract_canon_sha256":"32b6293df2917fab6528cb2f3539b60c49668558ff5bccff6b5415f722d00290"},"schema_version":"1.0"},"canonical_sha256":"a0303a3e09ae54340466a2f4642df9becc1e5b511cde63cf94d6170e0b64cf87","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:08.247930Z","signature_b64":"0NSTTvY63cRQneMCMnElZnK3nctSUZ3HcyWxOU4O16hOFFFNq5/uBY4ZSMlH3P4VEkYyQeE+9qbwvImQcKWSBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0303a3e09ae54340466a2f4642df9becc1e5b511cde63cf94d6170e0b64cf87","last_reissued_at":"2026-05-17T23:50:08.247457Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:08.247457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.01695","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":"2026-05-17T23:50:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6g4uoh8dql5ppj2f3KUPV6zF2bH/9sPJuSgMnMYrxToimLxiITLu4VbVJBJU2eLldwfC/6WVpMJO7mvtNIeWBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:15:09.351539Z"},"content_sha256":"5407d01338cc7b3abe2ac490fbb4d069713c08778e6e12f912cd246e4a62ecf7","schema_version":"1.0","event_id":"sha256:5407d01338cc7b3abe2ac490fbb4d069713c08778e6e12f912cd246e4a62ecf7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UAYDUPQJVZKDIBDGUL2GILPZX3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mapping the stellar age of the Milky Way bulge with the VVV. I. The method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"(10) INAF - Astronomical Observatory of Abruzzo, 11), (11) INFN, (12) INAF - Osservatorio Astronomico di Padova, (13) Max-Planck-Institut f\\\"ur Astrophysik), (2) Instituto de Astrof\\'isica de Canarias, 3), (3) Department of Astrophysics University of La Laguna, 4), (4) Instituto de Astrof\\'isica Pontificia Universidad Cat\\'olica de Chile, 5), (5) Millennium Institute of Astrophysics, 6), (6) Excellence Cluster Universe, 7, (7) Departamento de Ciencias F\\'isicas Universidad Andr\\'es Bello, 8), (8) Vatican Observatory, (9) Institute for Astronomy University of Edinburgh, A. Renzini (12), A. Weiss (13) ((1) European Southern Observatory, D. Minniti (5, E. S\\\"okmen (2, E. Valenti (1), F. Surot (1, M. Rejkuba (1, M. Zoccali (4, O. A. Gonzalez (9), S. Cassisi (10, S. L. Hidalgo (2","submitted_at":"2019-02-05T14:13:15Z","abstract_excerpt":"Recent observational programmes are providing a global view of the Milky Way bulge that serves as template for detailed comparison with models and extragalactic bulges. A number of surveys (i.e. VVV, GIBS, GES, ARGOS, BRAVA, APOGEE) are producing comprehensive and detailed extinction, metallicity, kinematics and stellar density maps of the Galactic bulge with unprecedented accuracy. However, the still missing key ingredient is the distribution of stellar ages across the bulge. To overcome this limitation, we aim to age-date the stellar population in several bulge fields with the ultimate goal "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01695","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":"2026-05-17T23:50:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PGaqShs4wiSi3y9ukxH/gWzn0KggcxSJAB/3CTYJGCPHYDUKmuUkkxnRR9NMt1nlNx28RwizyLQU1uHIZTlXAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:15:09.351923Z"},"content_sha256":"4625ea380b5e4b52a3eb251e5d7d52eca5a7efda0b25bacdc31322897ec0e793","schema_version":"1.0","event_id":"sha256:4625ea380b5e4b52a3eb251e5d7d52eca5a7efda0b25bacdc31322897ec0e793"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UAYDUPQJVZKDIBDGUL2GILPZX3/bundle.json","state_url":"https://pith.science/pith/UAYDUPQJVZKDIBDGUL2GILPZX3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UAYDUPQJVZKDIBDGUL2GILPZX3/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":"2026-05-27T23:15:09Z","links":{"resolver":"https://pith.science/pith/UAYDUPQJVZKDIBDGUL2GILPZX3","bundle":"https://pith.science/pith/UAYDUPQJVZKDIBDGUL2GILPZX3/bundle.json","state":"https://pith.science/pith/UAYDUPQJVZKDIBDGUL2GILPZX3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UAYDUPQJVZKDIBDGUL2GILPZX3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UAYDUPQJVZKDIBDGUL2GILPZX3","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":"32b6293df2917fab6528cb2f3539b60c49668558ff5bccff6b5415f722d00290","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-05T14:13:15Z","title_canon_sha256":"08aea9fb2299f5606c46c722f92e7779f222627cda34731128e63211382affe5"},"schema_version":"1.0","source":{"id":"1902.01695","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01695","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01695v1","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01695","created_at":"2026-05-17T23:50:08Z"},{"alias_kind":"pith_short_12","alias_value":"UAYDUPQJVZKD","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UAYDUPQJVZKDIBDG","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UAYDUPQJ","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:4625ea380b5e4b52a3eb251e5d7d52eca5a7efda0b25bacdc31322897ec0e793","target":"graph","created_at":"2026-05-17T23:50:08Z","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":"Recent observational programmes are providing a global view of the Milky Way bulge that serves as template for detailed comparison with models and extragalactic bulges. A number of surveys (i.e. VVV, GIBS, GES, ARGOS, BRAVA, APOGEE) are producing comprehensive and detailed extinction, metallicity, kinematics and stellar density maps of the Galactic bulge with unprecedented accuracy. However, the still missing key ingredient is the distribution of stellar ages across the bulge. To overcome this limitation, we aim to age-date the stellar population in several bulge fields with the ultimate goal ","authors_text":"(10) INAF - Astronomical Observatory of Abruzzo, 11), (11) INFN, (12) INAF - Osservatorio Astronomico di Padova, (13) Max-Planck-Institut f\\\"ur Astrophysik), (2) Instituto de Astrof\\'isica de Canarias, 3), (3) Department of Astrophysics University of La Laguna, 4), (4) Instituto de Astrof\\'isica Pontificia Universidad Cat\\'olica de Chile, 5), (5) Millennium Institute of Astrophysics, 6), (6) Excellence Cluster Universe, 7, (7) Departamento de Ciencias F\\'isicas Universidad Andr\\'es Bello, 8), (8) Vatican Observatory, (9) Institute for Astronomy University of Edinburgh, A. Renzini (12), A. Weiss (13) ((1) European Southern Observatory, D. Minniti (5, E. S\\\"okmen (2, E. Valenti (1), F. Surot (1, M. Rejkuba (1, M. Zoccali (4, O. A. Gonzalez (9), S. Cassisi (10, S. L. Hidalgo (2","cross_cats":["astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-05T14:13:15Z","title":"Mapping the stellar age of the Milky Way bulge with the VVV. I. The method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01695","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":"sha256:5407d01338cc7b3abe2ac490fbb4d069713c08778e6e12f912cd246e4a62ecf7","target":"record","created_at":"2026-05-17T23:50:08Z","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":"32b6293df2917fab6528cb2f3539b60c49668558ff5bccff6b5415f722d00290","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-05T14:13:15Z","title_canon_sha256":"08aea9fb2299f5606c46c722f92e7779f222627cda34731128e63211382affe5"},"schema_version":"1.0","source":{"id":"1902.01695","kind":"arxiv","version":1}},"canonical_sha256":"a0303a3e09ae54340466a2f4642df9becc1e5b511cde63cf94d6170e0b64cf87","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0303a3e09ae54340466a2f4642df9becc1e5b511cde63cf94d6170e0b64cf87","first_computed_at":"2026-05-17T23:50:08.247457Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:08.247457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0NSTTvY63cRQneMCMnElZnK3nctSUZ3HcyWxOU4O16hOFFFNq5/uBY4ZSMlH3P4VEkYyQeE+9qbwvImQcKWSBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:08.247930Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.01695","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5407d01338cc7b3abe2ac490fbb4d069713c08778e6e12f912cd246e4a62ecf7","sha256:4625ea380b5e4b52a3eb251e5d7d52eca5a7efda0b25bacdc31322897ec0e793"],"state_sha256":"1c3abac2d6cdd97c49b68cf99d146a517d038847036fe3d0d802055af0adaaf0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g3j8ottr+njgJFEcG9VISZqFlXUE1adZOL1v7pPq3NHXgs3V1MHw6KjPfpm2trIK0ifSNXQ3eSy88M+b0oohCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T23:15:09.355207Z","bundle_sha256":"26b93964c5900f14f5e6606350ec93183fe1145f9a3f2922487967be04fded35"}}