{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KMNSRXTO5O5S5VBI454FQ5CAWR","short_pith_number":"pith:KMNSRXTO","canonical_record":{"source":{"id":"2008.08371","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-19T10:39:18Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"762e4622c57e7ccee8e33cdb6aeee55c056d178f7072760dae8e7bbbae843909","abstract_canon_sha256":"68603e61f31a2803bb874c3c349e106e0d304d6f8786cb19fa06266702fdebbf"},"schema_version":"1.0"},"canonical_sha256":"531b28de6eebbb2ed428e778587440b44f234acaa8e6449e885358e535af2cf3","source":{"kind":"arxiv","id":"2008.08371","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.08371","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"arxiv_version","alias_value":"2008.08371v1","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.08371","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_12","alias_value":"KMNSRXTO5O5S","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_16","alias_value":"KMNSRXTO5O5S5VBI","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_8","alias_value":"KMNSRXTO","created_at":"2026-07-05T01:44:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KMNSRXTO5O5S5VBI454FQ5CAWR","target":"record","payload":{"canonical_record":{"source":{"id":"2008.08371","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-19T10:39:18Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"762e4622c57e7ccee8e33cdb6aeee55c056d178f7072760dae8e7bbbae843909","abstract_canon_sha256":"68603e61f31a2803bb874c3c349e106e0d304d6f8786cb19fa06266702fdebbf"},"schema_version":"1.0"},"canonical_sha256":"531b28de6eebbb2ed428e778587440b44f234acaa8e6449e885358e535af2cf3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:44:42.548911Z","signature_b64":"BJLS91s8ok2brAoPV7+OCl5Kzs2auZzDw6TOnfo8T9M0MEyC0ykgK790gqPn55udbup+rpfCXHk2in6m8wW3BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"531b28de6eebbb2ed428e778587440b44f234acaa8e6449e885358e535af2cf3","last_reissued_at":"2026-07-05T01:44:42.548490Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:44:42.548490Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.08371","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":"2026-07-05T01:44:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wGSXXUalWbdYuaoarmQ2UU25T+87Pv8trq5HxbyG9iBgzfkD4UXCpb8YQ4wxHppfgFhr/6b0XauKcSxo9tcfDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T09:15:24.042491Z"},"content_sha256":"644eab9e32c0f1d941a29e194a283f05e7f6e1940d98592f35e36bbdb223be94","schema_version":"1.0","event_id":"sha256:644eab9e32c0f1d941a29e194a283f05e7f6e1940d98592f35e36bbdb223be94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KMNSRXTO5O5S5VBI454FQ5CAWR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Benchmark stars, benchmark spectrographs: Detailed spectroscopic comparison of ESPRESSO, PEPSI, and HARPS data for Gaia benchmark stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"A. A. Hakobyan, A. Recio-Blanco, C. Allende Prieto, E. Delgado Mena, G. Israelian, J. I. Gonzaalez Hernaandez, J. P. Faria, M. Bergemann, M. Oshagh, M. Tsantaki, N. C. Santos, P. de Laverny, P. Figueira, S. G. Sousa, T. Boule, T. L. Campante, V. Adibekyan","submitted_at":"2020-08-19T10:39:18Z","abstract_excerpt":"Gaia benchmark stars are selected to be calibration stars for different spectroscopic surveys. Very high-quality and homogeneous spectroscopic data for these stars are therefore required. We collected ultrahigh-resolution ESPRESSO spectra for 30 of the 34 Gaia benchmark stars and made them public. We quantify the consistency of the results that are obtained with different high-, and ultrahigh-resolution spectrographs. We also comprehensively studied the effect of using different spectral reduction products of ESPRESSO on the final spectroscopic results. We used ultrahigh- and high-resolution s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.08371","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/2008.08371/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":"2026-07-05T01:44:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yJiLLPyjhafVgHmOTGFTHmPnxmHGrDASd4ZzR1vXZwi4yZ9tYycfVK7x94gODNIFoejkzmtEpBrl5LfVZsxrAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T09:15:24.043006Z"},"content_sha256":"68c8bcfb8fae75917a8e23ef6252b9fc12a7698bff9cfa3c4f80edbccaab494e","schema_version":"1.0","event_id":"sha256:68c8bcfb8fae75917a8e23ef6252b9fc12a7698bff9cfa3c4f80edbccaab494e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KMNSRXTO5O5S5VBI454FQ5CAWR/bundle.json","state_url":"https://pith.science/pith/KMNSRXTO5O5S5VBI454FQ5CAWR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KMNSRXTO5O5S5VBI454FQ5CAWR/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":"2026-08-11T09:15:24Z","links":{"resolver":"https://pith.science/pith/KMNSRXTO5O5S5VBI454FQ5CAWR","bundle":"https://pith.science/pith/KMNSRXTO5O5S5VBI454FQ5CAWR/bundle.json","state":"https://pith.science/pith/KMNSRXTO5O5S5VBI454FQ5CAWR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KMNSRXTO5O5S5VBI454FQ5CAWR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KMNSRXTO5O5S5VBI454FQ5CAWR","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":"68603e61f31a2803bb874c3c349e106e0d304d6f8786cb19fa06266702fdebbf","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-19T10:39:18Z","title_canon_sha256":"762e4622c57e7ccee8e33cdb6aeee55c056d178f7072760dae8e7bbbae843909"},"schema_version":"1.0","source":{"id":"2008.08371","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.08371","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"arxiv_version","alias_value":"2008.08371v1","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.08371","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_12","alias_value":"KMNSRXTO5O5S","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_16","alias_value":"KMNSRXTO5O5S5VBI","created_at":"2026-07-05T01:44:42Z"},{"alias_kind":"pith_short_8","alias_value":"KMNSRXTO","created_at":"2026-07-05T01:44:42Z"}],"graph_snapshots":[{"event_id":"sha256:68c8bcfb8fae75917a8e23ef6252b9fc12a7698bff9cfa3c4f80edbccaab494e","target":"graph","created_at":"2026-07-05T01:44:42Z","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/2008.08371/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gaia benchmark stars are selected to be calibration stars for different spectroscopic surveys. Very high-quality and homogeneous spectroscopic data for these stars are therefore required. We collected ultrahigh-resolution ESPRESSO spectra for 30 of the 34 Gaia benchmark stars and made them public. We quantify the consistency of the results that are obtained with different high-, and ultrahigh-resolution spectrographs. We also comprehensively studied the effect of using different spectral reduction products of ESPRESSO on the final spectroscopic results. We used ultrahigh- and high-resolution s","authors_text":"A. A. Hakobyan, A. Recio-Blanco, C. Allende Prieto, E. Delgado Mena, G. Israelian, J. I. Gonzaalez Hernaandez, J. P. Faria, M. Bergemann, M. Oshagh, M. Tsantaki, N. C. Santos, P. de Laverny, P. Figueira, S. G. Sousa, T. Boule, T. L. Campante, V. Adibekyan","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-19T10:39:18Z","title":"Benchmark stars, benchmark spectrographs: Detailed spectroscopic comparison of ESPRESSO, PEPSI, and HARPS data for Gaia benchmark stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.08371","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":"sha256:644eab9e32c0f1d941a29e194a283f05e7f6e1940d98592f35e36bbdb223be94","target":"record","created_at":"2026-07-05T01:44:42Z","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":"68603e61f31a2803bb874c3c349e106e0d304d6f8786cb19fa06266702fdebbf","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-08-19T10:39:18Z","title_canon_sha256":"762e4622c57e7ccee8e33cdb6aeee55c056d178f7072760dae8e7bbbae843909"},"schema_version":"1.0","source":{"id":"2008.08371","kind":"arxiv","version":1}},"canonical_sha256":"531b28de6eebbb2ed428e778587440b44f234acaa8e6449e885358e535af2cf3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"531b28de6eebbb2ed428e778587440b44f234acaa8e6449e885358e535af2cf3","first_computed_at":"2026-07-05T01:44:42.548490Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:44:42.548490Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BJLS91s8ok2brAoPV7+OCl5Kzs2auZzDw6TOnfo8T9M0MEyC0ykgK790gqPn55udbup+rpfCXHk2in6m8wW3BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:44:42.548911Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.08371","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:644eab9e32c0f1d941a29e194a283f05e7f6e1940d98592f35e36bbdb223be94","sha256:68c8bcfb8fae75917a8e23ef6252b9fc12a7698bff9cfa3c4f80edbccaab494e"],"state_sha256":"627e9dbd8d254db919a346feedf77de1a8eaa6253b6deffda2d1adaba4f6fb72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hzzKKyVdw05qP+Ftz+CCnHvg3cz3SMBVlweU9GmsW//h6gaS4mFJRncQ35REs8kDRNf8zvwFMealadwzkBAVAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T09:15:24.046819Z","bundle_sha256":"13d2b470a4991093c8f15e712ee12808b649fc5a348384d5db24d4f4751741cb"}}