{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:X6OP2K4NATA2XCOBL6VEAJYHU5","short_pith_number":"pith:X6OP2K4N","canonical_record":{"source":{"id":"2002.01188","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-04T09:37:49Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"b71afc96c2cee3f2d2c505f0802c7cb1eb354f350b7bd793fca9c52c0b5dc3f1","abstract_canon_sha256":"ab423f11b38cb37392cf758e3b1914dc21a8272574fd085fe7a0a1a05faa8201"},"schema_version":"1.0"},"canonical_sha256":"bf9cfd2b8d04c1ab89c15faa402707a74279280f7ade21141cbbc94f3462335c","source":{"kind":"arxiv","id":"2002.01188","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.01188","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"2002.01188v1","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.01188","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"X6OP2K4NATA2","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"X6OP2K4NATA2XCOB","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"X6OP2K4N","created_at":"2026-07-05T00:55:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:X6OP2K4NATA2XCOBL6VEAJYHU5","target":"record","payload":{"canonical_record":{"source":{"id":"2002.01188","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-04T09:37:49Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"b71afc96c2cee3f2d2c505f0802c7cb1eb354f350b7bd793fca9c52c0b5dc3f1","abstract_canon_sha256":"ab423f11b38cb37392cf758e3b1914dc21a8272574fd085fe7a0a1a05faa8201"},"schema_version":"1.0"},"canonical_sha256":"bf9cfd2b8d04c1ab89c15faa402707a74279280f7ade21141cbbc94f3462335c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:55:09.687166Z","signature_b64":"CT8uLPgr0e5plDsZeMZMuKpRhQkBKpryarvi6QuekICtjl9+VOs2QCYx895KnNS1zYFujptsM+iKLwBcRxu8AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf9cfd2b8d04c1ab89c15faa402707a74279280f7ade21141cbbc94f3462335c","last_reissued_at":"2026-07-05T00:55:09.686579Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:55:09.686579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.01188","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":"2026-07-05T00:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pZI6ACIQMMcRYK8fPjO19RqIz+k47iKay9PdhbSLzeLcIwC+P1Pky9xp6KPTL1xaCd9FMMIzFUdl4Razh+6YAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:57:09.091468Z"},"content_sha256":"514703c06ed9a15c933d479988a41a50de11c819a8c1503d183a0397ad2761fb","schema_version":"1.0","event_id":"sha256:514703c06ed9a15c933d479988a41a50de11c819a8c1503d183a0397ad2761fb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:X6OP2K4NATA2XCOBL6VEAJYHU5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing the galactic halo with RR Lyrae stars I: The catalog","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"B.-Q. Chen, C. Wang, F. Wang, G.-C. Liu, H.-B. Yuan, H.-W. Zhang, J.-J., M.-S. Xiang, Ren, X.-W. Liu, Y. Huang, Y. Yang, Z.-J. Tian","submitted_at":"2020-02-04T09:37:49Z","abstract_excerpt":"We present a catalog of 5,290 RR Lyrae stars (RRLs) with metallicities estimated from spectra of the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) and the Sloan Extension for Galactic Understanding and Exploration (SEGUE) surveys. Nearly 70 per cent of them (3,642 objects) also have systemic radial velocities measured. Given the pulsating nature of RRLs, metallicity estimates are based on spectra of individual exposures, by matching them with the synthetic templates. The systemic radial velocities are measured by fitting the observed velocity as a function of phase assum"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.01188","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/2002.01188/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":"2026-07-05T00:55:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KwaB63D4zADEmipXsblyWPyYrBPzfDNZ70mRf+tdLzaoqLI778I4T60A8OQOJ7nOSg64ET7OPutAAixOC2C/AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:57:09.092394Z"},"content_sha256":"745e0f2ad8ee5027a179b6853c49f93fa058f800ef4a385eb18825b5c1447869","schema_version":"1.0","event_id":"sha256:745e0f2ad8ee5027a179b6853c49f93fa058f800ef4a385eb18825b5c1447869"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X6OP2K4NATA2XCOBL6VEAJYHU5/bundle.json","state_url":"https://pith.science/pith/X6OP2K4NATA2XCOBL6VEAJYHU5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X6OP2K4NATA2XCOBL6VEAJYHU5/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":"2026-08-10T17:57:09Z","links":{"resolver":"https://pith.science/pith/X6OP2K4NATA2XCOBL6VEAJYHU5","bundle":"https://pith.science/pith/X6OP2K4NATA2XCOBL6VEAJYHU5/bundle.json","state":"https://pith.science/pith/X6OP2K4NATA2XCOBL6VEAJYHU5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X6OP2K4NATA2XCOBL6VEAJYHU5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:X6OP2K4NATA2XCOBL6VEAJYHU5","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":"ab423f11b38cb37392cf758e3b1914dc21a8272574fd085fe7a0a1a05faa8201","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-04T09:37:49Z","title_canon_sha256":"b71afc96c2cee3f2d2c505f0802c7cb1eb354f350b7bd793fca9c52c0b5dc3f1"},"schema_version":"1.0","source":{"id":"2002.01188","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.01188","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"arxiv_version","alias_value":"2002.01188v1","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.01188","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"pith_short_12","alias_value":"X6OP2K4NATA2","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"pith_short_16","alias_value":"X6OP2K4NATA2XCOB","created_at":"2026-07-05T00:55:09Z"},{"alias_kind":"pith_short_8","alias_value":"X6OP2K4N","created_at":"2026-07-05T00:55:09Z"}],"graph_snapshots":[{"event_id":"sha256:745e0f2ad8ee5027a179b6853c49f93fa058f800ef4a385eb18825b5c1447869","target":"graph","created_at":"2026-07-05T00:55:09Z","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/2002.01188/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a catalog of 5,290 RR Lyrae stars (RRLs) with metallicities estimated from spectra of the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) and the Sloan Extension for Galactic Understanding and Exploration (SEGUE) surveys. Nearly 70 per cent of them (3,642 objects) also have systemic radial velocities measured. Given the pulsating nature of RRLs, metallicity estimates are based on spectra of individual exposures, by matching them with the synthetic templates. The systemic radial velocities are measured by fitting the observed velocity as a function of phase assum","authors_text":"B.-Q. Chen, C. Wang, F. Wang, G.-C. Liu, H.-B. Yuan, H.-W. Zhang, J.-J., M.-S. Xiang, Ren, X.-W. Liu, Y. Huang, Y. Yang, Z.-J. Tian","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-04T09:37:49Z","title":"Probing the galactic halo with RR Lyrae stars I: The catalog"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.01188","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":"sha256:514703c06ed9a15c933d479988a41a50de11c819a8c1503d183a0397ad2761fb","target":"record","created_at":"2026-07-05T00:55:09Z","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":"ab423f11b38cb37392cf758e3b1914dc21a8272574fd085fe7a0a1a05faa8201","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-02-04T09:37:49Z","title_canon_sha256":"b71afc96c2cee3f2d2c505f0802c7cb1eb354f350b7bd793fca9c52c0b5dc3f1"},"schema_version":"1.0","source":{"id":"2002.01188","kind":"arxiv","version":1}},"canonical_sha256":"bf9cfd2b8d04c1ab89c15faa402707a74279280f7ade21141cbbc94f3462335c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf9cfd2b8d04c1ab89c15faa402707a74279280f7ade21141cbbc94f3462335c","first_computed_at":"2026-07-05T00:55:09.686579Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:55:09.686579Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CT8uLPgr0e5plDsZeMZMuKpRhQkBKpryarvi6QuekICtjl9+VOs2QCYx895KnNS1zYFujptsM+iKLwBcRxu8AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:55:09.687166Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.01188","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:514703c06ed9a15c933d479988a41a50de11c819a8c1503d183a0397ad2761fb","sha256:745e0f2ad8ee5027a179b6853c49f93fa058f800ef4a385eb18825b5c1447869"],"state_sha256":"1b2f39eea521f1c0cb722eee74148b4a84764dc313d05612a2bff56ee186215e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wqthazv2RB/v/mz5wL+z5V9BI9PvN5IJHFIznvfqIX+lHSKktq2yvq4mQZr1qxUyqI1yndc0j8sVtHYz/s41Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T17:57:09.098324Z","bundle_sha256":"046636de35ee0d3bab86629a1ba6c81221ffbe78212e256d7aea84980b861eeb"}}