{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:RYAWODZOHO4RJH5YU2W4M7CAN3","short_pith_number":"pith:RYAWODZO","canonical_record":{"source":{"id":"1511.00728","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-02T22:10:22Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"65face94b01bde7caa4bda0cb3640ccb6a27837c155eae19207633579153b4a2","abstract_canon_sha256":"38decd74b8c7b9ded583a786d56b869544dc46ee9805ab7d49af00928557191d"},"schema_version":"1.0"},"canonical_sha256":"8e01670f2e3bb9149fb8a6adc67c406ee1432af6829df9775cf817490672f8ad","source":{"kind":"arxiv","id":"1511.00728","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.00728","created_at":"2026-05-18T01:28:06Z"},{"alias_kind":"arxiv_version","alias_value":"1511.00728v1","created_at":"2026-05-18T01:28:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.00728","created_at":"2026-05-18T01:28:06Z"},{"alias_kind":"pith_short_12","alias_value":"RYAWODZOHO4R","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RYAWODZOHO4RJH5Y","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RYAWODZO","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:RYAWODZOHO4RJH5YU2W4M7CAN3","target":"record","payload":{"canonical_record":{"source":{"id":"1511.00728","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-02T22:10:22Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"65face94b01bde7caa4bda0cb3640ccb6a27837c155eae19207633579153b4a2","abstract_canon_sha256":"38decd74b8c7b9ded583a786d56b869544dc46ee9805ab7d49af00928557191d"},"schema_version":"1.0"},"canonical_sha256":"8e01670f2e3bb9149fb8a6adc67c406ee1432af6829df9775cf817490672f8ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:28:06.545510Z","signature_b64":"W5DLePZsmxkpfpCJM50btaqPMjcq2es7vIrvfiZALPAe7oHZPknNuxQfSt4TUQ6mLm9IHCMGyClteJLoE6K0BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e01670f2e3bb9149fb8a6adc67c406ee1432af6829df9775cf817490672f8ad","last_reissued_at":"2026-05-18T01:28:06.544934Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:28:06.544934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.00728","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":"2026-05-18T01:28:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PKS/tNnMcGuMxBNyWF18genokQ/wPjhjPkiMffTGM7G1x1Cc1HM/7eTIm+xBStiQ6apA7g8yYKXIiDsXU1K3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:15:53.451127Z"},"content_sha256":"187fc4a89d4a2ce3aa37cc8cec9ea7f03ecff3d59eb3a032d9e3eb9b1e6290e0","schema_version":"1.0","event_id":"sha256:187fc4a89d4a2ce3aa37cc8cec9ea7f03ecff3d59eb3a032d9e3eb9b1e6290e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:RYAWODZOHO4RJH5YU2W4M7CAN3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The HST survey of Magellanic-Cloud clusters and of their stellar populations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. P. Milone","submitted_at":"2015-11-02T22:10:22Z","abstract_excerpt":"A large number of intermediate-age (~1-2-Gyr old) globular clusters (GCs) in the Large and the Small Magellanic Cloud (MC) exhibit either bimodal or extended main-sequence (MS) turn off and dual red clump. Moreover, recent papers have shown that the MS of the young clusters NGC1844 and NGC1856 is either broadened or split. These features of the color-magnitude diagram (CMD) are not consistent with a single isochrone and suggest that star clusters in MCs have experienced a prolonged star formation, in close analogy with Milky-Way GCs with multiple stellar populations. As an alternative, stellar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.00728","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":"2026-05-18T01:28:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IZGgprJbOlIvn8bd1ZQmI4SxoZmvH1nxMPwNatOByC0bpNP2LULmZQ56rosRhNnulOmuL58gT7MCYlJlA7mjAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:15:53.451496Z"},"content_sha256":"1d8f3a9b594eb22cd91d7142612ea423e4d18a23de2a05b420e917f9aefc0536","schema_version":"1.0","event_id":"sha256:1d8f3a9b594eb22cd91d7142612ea423e4d18a23de2a05b420e917f9aefc0536"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RYAWODZOHO4RJH5YU2W4M7CAN3/bundle.json","state_url":"https://pith.science/pith/RYAWODZOHO4RJH5YU2W4M7CAN3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RYAWODZOHO4RJH5YU2W4M7CAN3/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":"2026-05-28T08:15:53Z","links":{"resolver":"https://pith.science/pith/RYAWODZOHO4RJH5YU2W4M7CAN3","bundle":"https://pith.science/pith/RYAWODZOHO4RJH5YU2W4M7CAN3/bundle.json","state":"https://pith.science/pith/RYAWODZOHO4RJH5YU2W4M7CAN3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RYAWODZOHO4RJH5YU2W4M7CAN3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RYAWODZOHO4RJH5YU2W4M7CAN3","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":"38decd74b8c7b9ded583a786d56b869544dc46ee9805ab7d49af00928557191d","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-02T22:10:22Z","title_canon_sha256":"65face94b01bde7caa4bda0cb3640ccb6a27837c155eae19207633579153b4a2"},"schema_version":"1.0","source":{"id":"1511.00728","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.00728","created_at":"2026-05-18T01:28:06Z"},{"alias_kind":"arxiv_version","alias_value":"1511.00728v1","created_at":"2026-05-18T01:28:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.00728","created_at":"2026-05-18T01:28:06Z"},{"alias_kind":"pith_short_12","alias_value":"RYAWODZOHO4R","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RYAWODZOHO4RJH5Y","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RYAWODZO","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:1d8f3a9b594eb22cd91d7142612ea423e4d18a23de2a05b420e917f9aefc0536","target":"graph","created_at":"2026-05-18T01:28:06Z","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":"A large number of intermediate-age (~1-2-Gyr old) globular clusters (GCs) in the Large and the Small Magellanic Cloud (MC) exhibit either bimodal or extended main-sequence (MS) turn off and dual red clump. Moreover, recent papers have shown that the MS of the young clusters NGC1844 and NGC1856 is either broadened or split. These features of the color-magnitude diagram (CMD) are not consistent with a single isochrone and suggest that star clusters in MCs have experienced a prolonged star formation, in close analogy with Milky-Way GCs with multiple stellar populations. As an alternative, stellar","authors_text":"A. P. Milone","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-02T22:10:22Z","title":"The HST survey of Magellanic-Cloud clusters and of their stellar populations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.00728","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":"sha256:187fc4a89d4a2ce3aa37cc8cec9ea7f03ecff3d59eb3a032d9e3eb9b1e6290e0","target":"record","created_at":"2026-05-18T01:28:06Z","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":"38decd74b8c7b9ded583a786d56b869544dc46ee9805ab7d49af00928557191d","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-11-02T22:10:22Z","title_canon_sha256":"65face94b01bde7caa4bda0cb3640ccb6a27837c155eae19207633579153b4a2"},"schema_version":"1.0","source":{"id":"1511.00728","kind":"arxiv","version":1}},"canonical_sha256":"8e01670f2e3bb9149fb8a6adc67c406ee1432af6829df9775cf817490672f8ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e01670f2e3bb9149fb8a6adc67c406ee1432af6829df9775cf817490672f8ad","first_computed_at":"2026-05-18T01:28:06.544934Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:06.544934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W5DLePZsmxkpfpCJM50btaqPMjcq2es7vIrvfiZALPAe7oHZPknNuxQfSt4TUQ6mLm9IHCMGyClteJLoE6K0BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:06.545510Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.00728","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:187fc4a89d4a2ce3aa37cc8cec9ea7f03ecff3d59eb3a032d9e3eb9b1e6290e0","sha256:1d8f3a9b594eb22cd91d7142612ea423e4d18a23de2a05b420e917f9aefc0536"],"state_sha256":"70a80fef7324b8545b64e80e0f754762190ff7993831570366ffb7b7dfc82ba0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ehHpGxoQ6oDJhRQ4LD2Icb19Lw8fssyWX7TKg3KOwQUwlKZtG8bkKAVFpAioE6Dsjc760K9C4O0kfxmQZonwCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:15:53.453691Z","bundle_sha256":"8c6becede09b53713e2fe30710abf7e0cb8855a76709c5ba1f78086706b6dc6a"}}