{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:LPRTIEFNCMOH57LWXZNBHKWJJW","short_pith_number":"pith:LPRTIEFN","canonical_record":{"source":{"id":"2006.12507","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-22T18:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"699b5ddaf25df36a64c7c9db46ce8a206794359d0f6da420f0279899e9d4aeda","abstract_canon_sha256":"251c529057fd43b4f2abaa5e53e815dd7f6f52c542a5910459162a16c85b49d6"},"schema_version":"1.0"},"canonical_sha256":"5be33410ad131c7efd76be5a13aac94db141d0b83ae707f74f4524535173b650","source":{"kind":"arxiv","id":"2006.12507","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.12507","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"arxiv_version","alias_value":"2006.12507v1","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.12507","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"pith_short_12","alias_value":"LPRTIEFNCMOH","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"pith_short_16","alias_value":"LPRTIEFNCMOH57LW","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"pith_short_8","alias_value":"LPRTIEFN","created_at":"2026-07-05T01:35:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:LPRTIEFNCMOH57LWXZNBHKWJJW","target":"record","payload":{"canonical_record":{"source":{"id":"2006.12507","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-22T18:00:01Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"699b5ddaf25df36a64c7c9db46ce8a206794359d0f6da420f0279899e9d4aeda","abstract_canon_sha256":"251c529057fd43b4f2abaa5e53e815dd7f6f52c542a5910459162a16c85b49d6"},"schema_version":"1.0"},"canonical_sha256":"5be33410ad131c7efd76be5a13aac94db141d0b83ae707f74f4524535173b650","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:35:34.848046Z","signature_b64":"Ow80VYMs+lZCvCdJ43xZHVFR35zoW8x+lSVBTVlz6iH3YLkn/XLocJ7+hjHy+akWQ1QledcukdsJN6wDilBkBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5be33410ad131c7efd76be5a13aac94db141d0b83ae707f74f4524535173b650","last_reissued_at":"2026-07-05T01:35:34.847520Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:35:34.847520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.12507","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":"2026-07-05T01:35:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LKfxT8GyjICaiIBlsTD4cQooirVM04vjHpPUojh+gZgcQfvCf3S32cu5k2yOYSnDiO4LNvnOENrNlaXjFjGTDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T10:10:01.604550Z"},"content_sha256":"c0cc70f59406815a1bdf3da7d20acab9db8693226cd2400f0c103d0767adaa7d","schema_version":"1.0","event_id":"sha256:c0cc70f59406815a1bdf3da7d20acab9db8693226cd2400f0c103d0767adaa7d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:LPRTIEFNCMOH57LWXZNBHKWJJW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The age of the Milky Way inner stellar spheroid from RR Lyrae population synthesis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Koch, A. Kunder, A. Savino, R. Smolec, Z. Prudil","submitted_at":"2020-06-22T18:00:01Z","abstract_excerpt":"The central kiloparsecs of the Milky Way are known to host an old, spheroidal stellar population, whose spatial and kinematical properties set it apart from the boxy/peanut structure that constitutes most of the central stellar mass. The nature of this spheroidal population, whether a small classical bulge, the innermost stellar halo or a population of disk stars with large initial velocity dispersion, remains unclear. This structure is also a promising candidate to host some of the oldest stars in the Galaxy. Here we address the topic of the inner stellar spheroid age, using spectroscopic and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.12507","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.12507/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":"2026-07-05T01:35:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VhskLVvQBAmcaX0TsnUA/pDucdOyZorBK2wWnkiVNCRkBzAeGMnKv1dpQH/PU8AgpJMJ9xoZlEcBbL7L6qxgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T10:10:01.605116Z"},"content_sha256":"98dff5e28e2156c8c30d93759bd3a5bff8e207b8e3b9ffb67f0e24423a52a5a8","schema_version":"1.0","event_id":"sha256:98dff5e28e2156c8c30d93759bd3a5bff8e207b8e3b9ffb67f0e24423a52a5a8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LPRTIEFNCMOH57LWXZNBHKWJJW/bundle.json","state_url":"https://pith.science/pith/LPRTIEFNCMOH57LWXZNBHKWJJW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LPRTIEFNCMOH57LWXZNBHKWJJW/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":"2026-07-05T10:10:01Z","links":{"resolver":"https://pith.science/pith/LPRTIEFNCMOH57LWXZNBHKWJJW","bundle":"https://pith.science/pith/LPRTIEFNCMOH57LWXZNBHKWJJW/bundle.json","state":"https://pith.science/pith/LPRTIEFNCMOH57LWXZNBHKWJJW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LPRTIEFNCMOH57LWXZNBHKWJJW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:LPRTIEFNCMOH57LWXZNBHKWJJW","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":"251c529057fd43b4f2abaa5e53e815dd7f6f52c542a5910459162a16c85b49d6","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-22T18:00:01Z","title_canon_sha256":"699b5ddaf25df36a64c7c9db46ce8a206794359d0f6da420f0279899e9d4aeda"},"schema_version":"1.0","source":{"id":"2006.12507","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.12507","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"arxiv_version","alias_value":"2006.12507v1","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.12507","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"pith_short_12","alias_value":"LPRTIEFNCMOH","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"pith_short_16","alias_value":"LPRTIEFNCMOH57LW","created_at":"2026-07-05T01:35:34Z"},{"alias_kind":"pith_short_8","alias_value":"LPRTIEFN","created_at":"2026-07-05T01:35:34Z"}],"graph_snapshots":[{"event_id":"sha256:98dff5e28e2156c8c30d93759bd3a5bff8e207b8e3b9ffb67f0e24423a52a5a8","target":"graph","created_at":"2026-07-05T01:35:34Z","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/2006.12507/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The central kiloparsecs of the Milky Way are known to host an old, spheroidal stellar population, whose spatial and kinematical properties set it apart from the boxy/peanut structure that constitutes most of the central stellar mass. The nature of this spheroidal population, whether a small classical bulge, the innermost stellar halo or a population of disk stars with large initial velocity dispersion, remains unclear. This structure is also a promising candidate to host some of the oldest stars in the Galaxy. Here we address the topic of the inner stellar spheroid age, using spectroscopic and","authors_text":"A. Koch, A. Kunder, A. Savino, R. Smolec, Z. Prudil","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-22T18:00:01Z","title":"The age of the Milky Way inner stellar spheroid from RR Lyrae population synthesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.12507","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:c0cc70f59406815a1bdf3da7d20acab9db8693226cd2400f0c103d0767adaa7d","target":"record","created_at":"2026-07-05T01:35:34Z","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":"251c529057fd43b4f2abaa5e53e815dd7f6f52c542a5910459162a16c85b49d6","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-06-22T18:00:01Z","title_canon_sha256":"699b5ddaf25df36a64c7c9db46ce8a206794359d0f6da420f0279899e9d4aeda"},"schema_version":"1.0","source":{"id":"2006.12507","kind":"arxiv","version":1}},"canonical_sha256":"5be33410ad131c7efd76be5a13aac94db141d0b83ae707f74f4524535173b650","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5be33410ad131c7efd76be5a13aac94db141d0b83ae707f74f4524535173b650","first_computed_at":"2026-07-05T01:35:34.847520Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:35:34.847520Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ow80VYMs+lZCvCdJ43xZHVFR35zoW8x+lSVBTVlz6iH3YLkn/XLocJ7+hjHy+akWQ1QledcukdsJN6wDilBkBg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:35:34.848046Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.12507","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0cc70f59406815a1bdf3da7d20acab9db8693226cd2400f0c103d0767adaa7d","sha256:98dff5e28e2156c8c30d93759bd3a5bff8e207b8e3b9ffb67f0e24423a52a5a8"],"state_sha256":"60f1b02a2c3b743e34bb82b5ca4ca4f829ec78b4a096711495e69ce7e768b830"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WbUzAW6Bguc/XJYhCL8y9ENQAZA52Zzf9/BNRDMJNzB8U2652aMGxafnqquOucidQ+qV7ydgHPfufcz8zqp2Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T10:10:01.607788Z","bundle_sha256":"15d13d53e6219dc1359101a6a425e9a3a197708c91f7fbb4cec427e426fc18e2"}}