{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UQKVIS2375YJFKAJVR55NBPIFL","short_pith_number":"pith:UQKVIS23","canonical_record":{"source":{"id":"1902.09925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-26T13:41:09Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f733abb3f32c9aded1d6465a07b902f187d606bc0e5ea5badd4cbe6078f5d567","abstract_canon_sha256":"52a5859e8b7f125578436345d52fee26b4717de87926007b2a9b10551ebc3830"},"schema_version":"1.0"},"canonical_sha256":"a415544b5bff7092a809ac7bd685e82aca0faa574681b43647892215feb66f2d","source":{"kind":"arxiv","id":"1902.09925","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.09925","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"arxiv_version","alias_value":"1902.09925v1","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.09925","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"pith_short_12","alias_value":"UQKVIS2375YJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UQKVIS2375YJFKAJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UQKVIS23","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UQKVIS2375YJFKAJVR55NBPIFL","target":"record","payload":{"canonical_record":{"source":{"id":"1902.09925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-26T13:41:09Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f733abb3f32c9aded1d6465a07b902f187d606bc0e5ea5badd4cbe6078f5d567","abstract_canon_sha256":"52a5859e8b7f125578436345d52fee26b4717de87926007b2a9b10551ebc3830"},"schema_version":"1.0"},"canonical_sha256":"a415544b5bff7092a809ac7bd685e82aca0faa574681b43647892215feb66f2d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:29.848132Z","signature_b64":"aGRIeES2DsIzp2IYVmXX6K6Rj/DsqudTSLC7mEMpWcHHB+cROoktrYksFvDsx4hfzciIFr+0N8R3uc9TleLoDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a415544b5bff7092a809ac7bd685e82aca0faa574681b43647892215feb66f2d","last_reissued_at":"2026-05-17T23:51:29.847687Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:29.847687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.09925","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":"2026-05-17T23:51:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ugQzAfufkwARpP+24IOiDOkaXcrfeLlLdOsN+Xlg+Us55MSHy0YA4WGNxuWoIGdxbmgfEtgICWd5O+gPVtUXCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T10:16:52.212615Z"},"content_sha256":"a8e848d9eee4f64bb4b4b14f426c4be338ce19a3864704555c7b2d4451d738e8","schema_version":"1.0","event_id":"sha256:a8e848d9eee4f64bb4b4b14f426c4be338ce19a3864704555c7b2d4451d738e8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UQKVIS2375YJFKAJVR55NBPIFL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Homogeneous photometry VII. Globular clusters in the Gaia era","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. Zocchi (ESA/ESTEC), E. Pancino (INAF-Arcetri, M. Monelli (Universidad de La Laguna), N. Sanna (INAF-Arcetri), P. B. Stetson (NRC-DAO), SSDC-ASI)","submitted_at":"2019-02-26T13:41:09Z","abstract_excerpt":"We present wide-field, ground-based Johnson-Cousins UBVRI photometry for 48 Galactic globular clusters based on almost 90000 public and proprietary images. The photometry is calibrated with the latest transformations obtained in the framework of our secondary standard project, with typical internal and external uncertainties of order a few millimagnitudes. These data provide a bridge between existing small-area, high-precision HST photometry and all sky-catalogues from large surveys like Gaia, SDSS, or LSST. For many clusters, we present the first publicly available photometry in some of the f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.09925","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":"2026-05-17T23:51:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+p9DHoF7rg0xT05K6L0TmzNFBgUsWdlflFQMu2E8feE7aVrr2lF+QcOxMlLsFZBSE6QK1JmSjXWzLf6INwv2Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T10:16:52.212894Z"},"content_sha256":"4d05b45956e2380a3a1fdf54fb7325308423a51d82b1640f9eef3f24b12aaa75","schema_version":"1.0","event_id":"sha256:4d05b45956e2380a3a1fdf54fb7325308423a51d82b1640f9eef3f24b12aaa75"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UQKVIS2375YJFKAJVR55NBPIFL/bundle.json","state_url":"https://pith.science/pith/UQKVIS2375YJFKAJVR55NBPIFL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UQKVIS2375YJFKAJVR55NBPIFL/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":"2026-08-02T10:16:52Z","links":{"resolver":"https://pith.science/pith/UQKVIS2375YJFKAJVR55NBPIFL","bundle":"https://pith.science/pith/UQKVIS2375YJFKAJVR55NBPIFL/bundle.json","state":"https://pith.science/pith/UQKVIS2375YJFKAJVR55NBPIFL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UQKVIS2375YJFKAJVR55NBPIFL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UQKVIS2375YJFKAJVR55NBPIFL","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":"52a5859e8b7f125578436345d52fee26b4717de87926007b2a9b10551ebc3830","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-26T13:41:09Z","title_canon_sha256":"f733abb3f32c9aded1d6465a07b902f187d606bc0e5ea5badd4cbe6078f5d567"},"schema_version":"1.0","source":{"id":"1902.09925","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.09925","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"arxiv_version","alias_value":"1902.09925v1","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.09925","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"pith_short_12","alias_value":"UQKVIS2375YJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UQKVIS2375YJFKAJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UQKVIS23","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:4d05b45956e2380a3a1fdf54fb7325308423a51d82b1640f9eef3f24b12aaa75","target":"graph","created_at":"2026-05-17T23:51:29Z","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 present wide-field, ground-based Johnson-Cousins UBVRI photometry for 48 Galactic globular clusters based on almost 90000 public and proprietary images. The photometry is calibrated with the latest transformations obtained in the framework of our secondary standard project, with typical internal and external uncertainties of order a few millimagnitudes. These data provide a bridge between existing small-area, high-precision HST photometry and all sky-catalogues from large surveys like Gaia, SDSS, or LSST. For many clusters, we present the first publicly available photometry in some of the f","authors_text":"A. Zocchi (ESA/ESTEC), E. Pancino (INAF-Arcetri, M. Monelli (Universidad de La Laguna), N. Sanna (INAF-Arcetri), P. B. Stetson (NRC-DAO), SSDC-ASI)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-26T13:41:09Z","title":"Homogeneous photometry VII. Globular clusters in the Gaia era"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.09925","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:a8e848d9eee4f64bb4b4b14f426c4be338ce19a3864704555c7b2d4451d738e8","target":"record","created_at":"2026-05-17T23:51:29Z","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":"52a5859e8b7f125578436345d52fee26b4717de87926007b2a9b10551ebc3830","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-26T13:41:09Z","title_canon_sha256":"f733abb3f32c9aded1d6465a07b902f187d606bc0e5ea5badd4cbe6078f5d567"},"schema_version":"1.0","source":{"id":"1902.09925","kind":"arxiv","version":1}},"canonical_sha256":"a415544b5bff7092a809ac7bd685e82aca0faa574681b43647892215feb66f2d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a415544b5bff7092a809ac7bd685e82aca0faa574681b43647892215feb66f2d","first_computed_at":"2026-05-17T23:51:29.847687Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:29.847687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aGRIeES2DsIzp2IYVmXX6K6Rj/DsqudTSLC7mEMpWcHHB+cROoktrYksFvDsx4hfzciIFr+0N8R3uc9TleLoDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:29.848132Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.09925","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8e848d9eee4f64bb4b4b14f426c4be338ce19a3864704555c7b2d4451d738e8","sha256:4d05b45956e2380a3a1fdf54fb7325308423a51d82b1640f9eef3f24b12aaa75"],"state_sha256":"98721016def72a2195106bae80abfb678a90bb7124fc48a1a7e4bf518854d4d9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X+5JRu1C6YeUEF9+9kMyo6K8AQh0blvlyV2I4a3n04bGEiQtdYRFh1H8osu3E82i9ilQmIvr6Ja4cpGtPYGtDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T10:16:52.214889Z","bundle_sha256":"ea40ddb9fe8ca0d16de98923351b6e48232da683c23842fa562bf918607d81f6"}}