{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:7AK3Z4NFKEOA2NQXGZ7TY5OFVD","short_pith_number":"pith:7AK3Z4NF","canonical_record":{"source":{"id":"2005.10945","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-05-21T23:53:25Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"title_canon_sha256":"31b082e3000857182d2f66dfa707d6754b3b8407a3c0c6c6ff8a9b9465cabd5a","abstract_canon_sha256":"e262276135ccd35822f672b714356ce9df769c62d3f5dec83121fb94496d78ef"},"schema_version":"1.0"},"canonical_sha256":"f815bcf1a5511c0d3617367f3c75c5a8ca60a3c11bc09eee2cbdab6c1ffff598","source":{"kind":"arxiv","id":"2005.10945","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.10945","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"arxiv_version","alias_value":"2005.10945v1","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.10945","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"pith_short_12","alias_value":"7AK3Z4NFKEOA","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"pith_short_16","alias_value":"7AK3Z4NFKEOA2NQX","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"pith_short_8","alias_value":"7AK3Z4NF","created_at":"2026-07-05T01:10:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:7AK3Z4NFKEOA2NQXGZ7TY5OFVD","target":"record","payload":{"canonical_record":{"source":{"id":"2005.10945","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-05-21T23:53:25Z","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"title_canon_sha256":"31b082e3000857182d2f66dfa707d6754b3b8407a3c0c6c6ff8a9b9465cabd5a","abstract_canon_sha256":"e262276135ccd35822f672b714356ce9df769c62d3f5dec83121fb94496d78ef"},"schema_version":"1.0"},"canonical_sha256":"f815bcf1a5511c0d3617367f3c75c5a8ca60a3c11bc09eee2cbdab6c1ffff598","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:10:38.869031Z","signature_b64":"rCGaUgFJh+XHoSuFA5VQqW0MNxK4TyGDX79mClO+GL5BM8aSWmNmHLR3838iXkI8mkVMawyUVotLx/5KTutqAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f815bcf1a5511c0d3617367f3c75c5a8ca60a3c11bc09eee2cbdab6c1ffff598","last_reissued_at":"2026-07-05T01:10:38.868574Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:10:38.868574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.10945","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":"2026-07-05T01:10:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PLuQ0dot1fw708sqYCimM6F5HVCKAshqgdmKE3WayWTyGX8R1vFgZVBzpz2ty7EWLoo2QOwGdgvJXPH18veIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T18:18:47.578495Z"},"content_sha256":"0c5f609f7f1460a3362b9cfec7a08ce187948f78cc73d1b9d18ddaa470961822","schema_version":"1.0","event_id":"sha256:0c5f609f7f1460a3362b9cfec7a08ce187948f78cc73d1b9d18ddaa470961822"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:7AK3Z4NFKEOA2NQXGZ7TY5OFVD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New Grids of Pure-Hydrogen White-Dwarf NLTE Model Atmospheres \\newline and the HST/STIS Flux Calibration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Ivan Hubeny, Ralph Bohlin, Thomas Rauch","submitted_at":"2020-05-21T23:53:25Z","abstract_excerpt":"Non-local Thermodynamic Equilibrium (NLTE) calculations of hot white dwarf (WD) model atmospheres are the cornerstone of modern flux calibrations for the Hubble Space Telescope (HST) and for the CALSPEC database. These theoretical spectral energy distributions (SEDs) provide the relative flux vs. wavelength, and only the absolute flux level remains to be set by reconciling the measured absolute flux of Vega in the visible with the Midcourse Space Experiment (MSX) values for Sirius in the mid-IR. The most recent SEDs calculated by the \\textsc{tlusty} and \\textsc{tmap} NLTE model atmosphere code"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.10945","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/2005.10945/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":"2026-07-05T01:10:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8BaD/0dcZmcSa9vjmwJDcuiUjdFk0wSqvk/jG89Ld4X1dlkdeuWIWvfTfeNa/KpqvKqPJxDHNXfmyJrkMuuoCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T18:18:47.579061Z"},"content_sha256":"04697f0164f896398561e9e558c166dc1c8481f687eceb3e449eafcd886fd1a3","schema_version":"1.0","event_id":"sha256:04697f0164f896398561e9e558c166dc1c8481f687eceb3e449eafcd886fd1a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7AK3Z4NFKEOA2NQXGZ7TY5OFVD/bundle.json","state_url":"https://pith.science/pith/7AK3Z4NFKEOA2NQXGZ7TY5OFVD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7AK3Z4NFKEOA2NQXGZ7TY5OFVD/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":"2026-07-25T18:18:47Z","links":{"resolver":"https://pith.science/pith/7AK3Z4NFKEOA2NQXGZ7TY5OFVD","bundle":"https://pith.science/pith/7AK3Z4NFKEOA2NQXGZ7TY5OFVD/bundle.json","state":"https://pith.science/pith/7AK3Z4NFKEOA2NQXGZ7TY5OFVD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7AK3Z4NFKEOA2NQXGZ7TY5OFVD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:7AK3Z4NFKEOA2NQXGZ7TY5OFVD","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":"e262276135ccd35822f672b714356ce9df769c62d3f5dec83121fb94496d78ef","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-05-21T23:53:25Z","title_canon_sha256":"31b082e3000857182d2f66dfa707d6754b3b8407a3c0c6c6ff8a9b9465cabd5a"},"schema_version":"1.0","source":{"id":"2005.10945","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.10945","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"arxiv_version","alias_value":"2005.10945v1","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.10945","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"pith_short_12","alias_value":"7AK3Z4NFKEOA","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"pith_short_16","alias_value":"7AK3Z4NFKEOA2NQX","created_at":"2026-07-05T01:10:38Z"},{"alias_kind":"pith_short_8","alias_value":"7AK3Z4NF","created_at":"2026-07-05T01:10:38Z"}],"graph_snapshots":[{"event_id":"sha256:04697f0164f896398561e9e558c166dc1c8481f687eceb3e449eafcd886fd1a3","target":"graph","created_at":"2026-07-05T01:10:38Z","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/2005.10945/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-local Thermodynamic Equilibrium (NLTE) calculations of hot white dwarf (WD) model atmospheres are the cornerstone of modern flux calibrations for the Hubble Space Telescope (HST) and for the CALSPEC database. These theoretical spectral energy distributions (SEDs) provide the relative flux vs. wavelength, and only the absolute flux level remains to be set by reconciling the measured absolute flux of Vega in the visible with the Midcourse Space Experiment (MSX) values for Sirius in the mid-IR. The most recent SEDs calculated by the \\textsc{tlusty} and \\textsc{tmap} NLTE model atmosphere code","authors_text":"Ivan Hubeny, Ralph Bohlin, Thomas Rauch","cross_cats":["astro-ph.GA","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-05-21T23:53:25Z","title":"New Grids of Pure-Hydrogen White-Dwarf NLTE Model Atmospheres \\newline and the HST/STIS Flux Calibration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.10945","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":"sha256:0c5f609f7f1460a3362b9cfec7a08ce187948f78cc73d1b9d18ddaa470961822","target":"record","created_at":"2026-07-05T01:10:38Z","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":"e262276135ccd35822f672b714356ce9df769c62d3f5dec83121fb94496d78ef","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-05-21T23:53:25Z","title_canon_sha256":"31b082e3000857182d2f66dfa707d6754b3b8407a3c0c6c6ff8a9b9465cabd5a"},"schema_version":"1.0","source":{"id":"2005.10945","kind":"arxiv","version":1}},"canonical_sha256":"f815bcf1a5511c0d3617367f3c75c5a8ca60a3c11bc09eee2cbdab6c1ffff598","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f815bcf1a5511c0d3617367f3c75c5a8ca60a3c11bc09eee2cbdab6c1ffff598","first_computed_at":"2026-07-05T01:10:38.868574Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:10:38.868574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rCGaUgFJh+XHoSuFA5VQqW0MNxK4TyGDX79mClO+GL5BM8aSWmNmHLR3838iXkI8mkVMawyUVotLx/5KTutqAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:10:38.869031Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.10945","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c5f609f7f1460a3362b9cfec7a08ce187948f78cc73d1b9d18ddaa470961822","sha256:04697f0164f896398561e9e558c166dc1c8481f687eceb3e449eafcd886fd1a3"],"state_sha256":"f712c6cfc1039386c09d29472f6945cb4411396320d57bec475c166854321b06"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9g9tDpff9v/7RpUo3saDkof9bXdxx+OYJSLpX4k8oeBPgJg1mNWoLfnVDnSFFzkyGIZrAHPV1cBob1LsXsKPCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-25T18:18:47.582272Z","bundle_sha256":"59f01bcf4c7659df47cffa824977b464db354c4cdc5b4b6b08e0297077548e17"}}