{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:MIFEXONF75Q3M4HYLIOJHILLMO","short_pith_number":"pith:MIFEXONF","canonical_record":{"source":{"id":"1604.06073","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-20T19:40:02Z","cross_cats_sorted":[],"title_canon_sha256":"e56a6ddbb82f284552a8e2d1f359cfbb82e8dded83e753a12fb3b452355f6460","abstract_canon_sha256":"fce614106ee87723b0175c47e34837cc302b9228d3b9fe4d9c87482a9573f00f"},"schema_version":"1.0"},"canonical_sha256":"620a4bb9a5ff61b670f85a1c93a16b639e80012aa651db5e27f90968f4684ad4","source":{"kind":"arxiv","id":"1604.06073","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06073","created_at":"2026-05-18T01:10:30Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06073v2","created_at":"2026-05-18T01:10:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06073","created_at":"2026-05-18T01:10:30Z"},{"alias_kind":"pith_short_12","alias_value":"MIFEXONF75Q3","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MIFEXONF75Q3M4HY","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MIFEXONF","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:MIFEXONF75Q3M4HYLIOJHILLMO","target":"record","payload":{"canonical_record":{"source":{"id":"1604.06073","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-20T19:40:02Z","cross_cats_sorted":[],"title_canon_sha256":"e56a6ddbb82f284552a8e2d1f359cfbb82e8dded83e753a12fb3b452355f6460","abstract_canon_sha256":"fce614106ee87723b0175c47e34837cc302b9228d3b9fe4d9c87482a9573f00f"},"schema_version":"1.0"},"canonical_sha256":"620a4bb9a5ff61b670f85a1c93a16b639e80012aa651db5e27f90968f4684ad4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:30.450555Z","signature_b64":"tLOGJJ6oTBv4pgs4QRiLeDhosK22XzoZHgcO0a9rg8Fdqfny2ACzKM/tL8YRRVu8cAOmdrYZYLwsXLWrXpUPDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"620a4bb9a5ff61b670f85a1c93a16b639e80012aa651db5e27f90968f4684ad4","last_reissued_at":"2026-05-18T01:10:30.449905Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:30.449905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.06073","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":"2026-05-18T01:10:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kD4/lSOGpDFHWRAi9X7FYwi5/CpojL8wiVEvTp8GJ7XJ+NhZ6+geIwAmF9hVp5EmPvm9fXQJoMmnrA9gXrrYDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:30:55.942154Z"},"content_sha256":"1ded9ce0bd147a094b10bb01abc1574d202f7c62441fbe0439808e7dc5128ccb","schema_version":"1.0","event_id":"sha256:1ded9ce0bd147a094b10bb01abc1574d202f7c62441fbe0439808e7dc5128ccb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:MIFEXONF75Q3M4HYLIOJHILLMO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bayesian Analysis of Two Stellar Populations in Galactic Globular Clusters I: Statistical and Computational Methods","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Sarajedini, D. A. van Dyk, D. C. Stenning, E. Robinson, N. Stein, R. Wagner-Kaiser, T. von Hippel","submitted_at":"2016-04-20T19:40:02Z","abstract_excerpt":"We develop a Bayesian model for globular clusters composed of multiple stellar populations, extending earlier statistical models for open clusters composed of simple (single) stellar populations (vanDyk et al. 2009, Stein et al. 2013). Specifically, we model globular clusters with two populations that differ in helium abundance. Our model assumes a hierarchical structuring of the parameters in which physical properties---age, metallicity, helium abundance, distance, absorption, and initial mass---are common to (i) the cluster as a whole or to (ii) individual populations within a cluster, or ar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06073","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":""},"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":"2026-05-18T01:10:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5GXSS1EkXSgFZNuf7u2Yg7LPx6xxqt7KCIbpg8oOHQURwqyjS0KJR6tgOwKRFeoqrScZ2G6bEj6/FM5MlQbsAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:30:55.942807Z"},"content_sha256":"228ec55dba8fae57139ff20d2265b38b98fa146418707976136f05118ba5eaac","schema_version":"1.0","event_id":"sha256:228ec55dba8fae57139ff20d2265b38b98fa146418707976136f05118ba5eaac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MIFEXONF75Q3M4HYLIOJHILLMO/bundle.json","state_url":"https://pith.science/pith/MIFEXONF75Q3M4HYLIOJHILLMO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MIFEXONF75Q3M4HYLIOJHILLMO/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":"2026-05-26T13:30:55Z","links":{"resolver":"https://pith.science/pith/MIFEXONF75Q3M4HYLIOJHILLMO","bundle":"https://pith.science/pith/MIFEXONF75Q3M4HYLIOJHILLMO/bundle.json","state":"https://pith.science/pith/MIFEXONF75Q3M4HYLIOJHILLMO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MIFEXONF75Q3M4HYLIOJHILLMO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:MIFEXONF75Q3M4HYLIOJHILLMO","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":"fce614106ee87723b0175c47e34837cc302b9228d3b9fe4d9c87482a9573f00f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-20T19:40:02Z","title_canon_sha256":"e56a6ddbb82f284552a8e2d1f359cfbb82e8dded83e753a12fb3b452355f6460"},"schema_version":"1.0","source":{"id":"1604.06073","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06073","created_at":"2026-05-18T01:10:30Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06073v2","created_at":"2026-05-18T01:10:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06073","created_at":"2026-05-18T01:10:30Z"},{"alias_kind":"pith_short_12","alias_value":"MIFEXONF75Q3","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MIFEXONF75Q3M4HY","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MIFEXONF","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:228ec55dba8fae57139ff20d2265b38b98fa146418707976136f05118ba5eaac","target":"graph","created_at":"2026-05-18T01:10:30Z","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":"We develop a Bayesian model for globular clusters composed of multiple stellar populations, extending earlier statistical models for open clusters composed of simple (single) stellar populations (vanDyk et al. 2009, Stein et al. 2013). Specifically, we model globular clusters with two populations that differ in helium abundance. Our model assumes a hierarchical structuring of the parameters in which physical properties---age, metallicity, helium abundance, distance, absorption, and initial mass---are common to (i) the cluster as a whole or to (ii) individual populations within a cluster, or ar","authors_text":"A. Sarajedini, D. A. van Dyk, D. C. Stenning, E. Robinson, N. Stein, R. Wagner-Kaiser, T. von Hippel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-20T19:40:02Z","title":"Bayesian Analysis of Two Stellar Populations in Galactic Globular Clusters I: Statistical and Computational Methods"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06073","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":"sha256:1ded9ce0bd147a094b10bb01abc1574d202f7c62441fbe0439808e7dc5128ccb","target":"record","created_at":"2026-05-18T01:10:30Z","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":"fce614106ee87723b0175c47e34837cc302b9228d3b9fe4d9c87482a9573f00f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-04-20T19:40:02Z","title_canon_sha256":"e56a6ddbb82f284552a8e2d1f359cfbb82e8dded83e753a12fb3b452355f6460"},"schema_version":"1.0","source":{"id":"1604.06073","kind":"arxiv","version":2}},"canonical_sha256":"620a4bb9a5ff61b670f85a1c93a16b639e80012aa651db5e27f90968f4684ad4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"620a4bb9a5ff61b670f85a1c93a16b639e80012aa651db5e27f90968f4684ad4","first_computed_at":"2026-05-18T01:10:30.449905Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:30.449905Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tLOGJJ6oTBv4pgs4QRiLeDhosK22XzoZHgcO0a9rg8Fdqfny2ACzKM/tL8YRRVu8cAOmdrYZYLwsXLWrXpUPDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:30.450555Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.06073","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ded9ce0bd147a094b10bb01abc1574d202f7c62441fbe0439808e7dc5128ccb","sha256:228ec55dba8fae57139ff20d2265b38b98fa146418707976136f05118ba5eaac"],"state_sha256":"760a53ecc8d428a79ec1a14e1837968dbbf13ffa0529d612eda6baebe77b8066"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XEuRWiYez8LU1aqHjDPpz2lQ6Rl/ZJa6tERs9xK9iD8evOhQ81929NfIU846XgTWRH3MpulfLaRV4NSTigfGAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T13:30:55.946195Z","bundle_sha256":"d9ada67f3e212e59e84e9a6e86bf7a70430a91eee2c4fd577f880ca96389f0b3"}}