{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:3HDKSWYYRTNKGKPHLQC55GHO3Q","short_pith_number":"pith:3HDKSWYY","canonical_record":{"source":{"id":"2005.06505","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-13T18:20:08Z","cross_cats_sorted":[],"title_canon_sha256":"6ed8a418bfa1a9bd58c7622caf98a04a1718715a38e9ec71ac3b25a577030166","abstract_canon_sha256":"5d48d7579e789bce51fbac18fb14c721d0fc76e924ea60af8b028c4716aeeb57"},"schema_version":"1.0"},"canonical_sha256":"d9c6a95b188cdaa329e75c05de98eedc0d7d71dcd40dd5afdd79a874727084a7","source":{"kind":"arxiv","id":"2005.06505","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.06505","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"arxiv_version","alias_value":"2005.06505v2","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.06505","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"pith_short_12","alias_value":"3HDKSWYYRTNK","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"pith_short_16","alias_value":"3HDKSWYYRTNKGKPH","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"pith_short_8","alias_value":"3HDKSWYY","created_at":"2026-07-05T01:03:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:3HDKSWYYRTNKGKPHLQC55GHO3Q","target":"record","payload":{"canonical_record":{"source":{"id":"2005.06505","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-13T18:20:08Z","cross_cats_sorted":[],"title_canon_sha256":"6ed8a418bfa1a9bd58c7622caf98a04a1718715a38e9ec71ac3b25a577030166","abstract_canon_sha256":"5d48d7579e789bce51fbac18fb14c721d0fc76e924ea60af8b028c4716aeeb57"},"schema_version":"1.0"},"canonical_sha256":"d9c6a95b188cdaa329e75c05de98eedc0d7d71dcd40dd5afdd79a874727084a7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:03:44.629246Z","signature_b64":"N4jIdzzGnGnQplLkZv5w7uQUxQ95fEcOLd5elaJMvTv2zm18ynwLkrevnFospO33LRpSfWUQa+LXwJPWXJS7BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9c6a95b188cdaa329e75c05de98eedc0d7d71dcd40dd5afdd79a874727084a7","last_reissued_at":"2026-07-05T01:03:44.628775Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:03:44.628775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.06505","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:03:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TSFozXvb6vywLRSSYILoSlzd5zgK6EtR8VVQw0tZC7blKOV6KsK6ksCvnR81qryDGtrw5Msns35r8mbFJLCQAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T16:50:48.808859Z"},"content_sha256":"286e7c228cd7b77121e31e25ec1ee01b6e95afd70d798eb65fc5e8c63319b6a6","schema_version":"1.0","event_id":"sha256:286e7c228cd7b77121e31e25ec1ee01b6e95afd70d798eb65fc5e8c63319b6a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:3HDKSWYYRTNKGKPHLQC55GHO3Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PypeIt: The Python Spectroscopic Data Reduction Pipeline","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"2), (2) Kavli Institute for the Physics, (3) University of California, (4) University of California Observatories, (5) Durham University, 6), (6) Steward Observatory, 7), (7) Lawrence Berkeley National Laboratory, 8) ((1) University of California, (8) Max Planck Institut fur Astrophysik), Emanuele Paolo Farina (3, Feige Wang (3, Frederick B. Davies (3, Joseph F. Hennawi (3), J. Xavier Prochaska (1, Kyle B. Westfall (4), Mathematics of the Universe, Ryan J. Cooke (5), Santa Barbara, Santa Cruz, Tiffany Hsyu (1), UK, University of Arizona","submitted_at":"2020-05-13T18:20:08Z","abstract_excerpt":"PypeIt is a Python package for semi-automated reduction of astronomical, spectroscopic data. Its algorithms build on decades-long development of previous data reduction pipelines by the developers (Bernstein, Burles, & Prochaska, 2015; Bochanski et al., 2009). The reduction procedure -- including a complete list of the input parameters and available functionality -- is provided as online documentation hosted by Read the Docs, which is regularly updated. (https://pypeit.readthedocs.io/en/latest/). Release v1.0.3 serves the following spectrographs: Gemini/GNIRS, Gemini/GMOS, Gemini/FLAMINGOS 2, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.06505","kind":"arxiv","version":2},"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/2005.06505/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":"2026-07-05T01:03:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CWc07a4mRan79n3SDBxRDWNrtqcfIX7HQWBnYDK2koQN7RIRzdyUW11gdkuVRQgFjCSENhGNkmS7SvVH8WnRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T16:50:48.809227Z"},"content_sha256":"4ea0a073657b9c30e1dd54b8ebcb30d6516320f83429acf9a7e45906645f9a37","schema_version":"1.0","event_id":"sha256:4ea0a073657b9c30e1dd54b8ebcb30d6516320f83429acf9a7e45906645f9a37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3HDKSWYYRTNKGKPHLQC55GHO3Q/bundle.json","state_url":"https://pith.science/pith/3HDKSWYYRTNKGKPHLQC55GHO3Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3HDKSWYYRTNKGKPHLQC55GHO3Q/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":"2026-07-12T16:50:48Z","links":{"resolver":"https://pith.science/pith/3HDKSWYYRTNKGKPHLQC55GHO3Q","bundle":"https://pith.science/pith/3HDKSWYYRTNKGKPHLQC55GHO3Q/bundle.json","state":"https://pith.science/pith/3HDKSWYYRTNKGKPHLQC55GHO3Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3HDKSWYYRTNKGKPHLQC55GHO3Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:3HDKSWYYRTNKGKPHLQC55GHO3Q","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":"5d48d7579e789bce51fbac18fb14c721d0fc76e924ea60af8b028c4716aeeb57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-13T18:20:08Z","title_canon_sha256":"6ed8a418bfa1a9bd58c7622caf98a04a1718715a38e9ec71ac3b25a577030166"},"schema_version":"1.0","source":{"id":"2005.06505","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.06505","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"arxiv_version","alias_value":"2005.06505v2","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.06505","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"pith_short_12","alias_value":"3HDKSWYYRTNK","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"pith_short_16","alias_value":"3HDKSWYYRTNKGKPH","created_at":"2026-07-05T01:03:44Z"},{"alias_kind":"pith_short_8","alias_value":"3HDKSWYY","created_at":"2026-07-05T01:03:44Z"}],"graph_snapshots":[{"event_id":"sha256:4ea0a073657b9c30e1dd54b8ebcb30d6516320f83429acf9a7e45906645f9a37","target":"graph","created_at":"2026-07-05T01:03:44Z","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/2005.06505/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"PypeIt is a Python package for semi-automated reduction of astronomical, spectroscopic data. Its algorithms build on decades-long development of previous data reduction pipelines by the developers (Bernstein, Burles, & Prochaska, 2015; Bochanski et al., 2009). The reduction procedure -- including a complete list of the input parameters and available functionality -- is provided as online documentation hosted by Read the Docs, which is regularly updated. (https://pypeit.readthedocs.io/en/latest/). Release v1.0.3 serves the following spectrographs: Gemini/GNIRS, Gemini/GMOS, Gemini/FLAMINGOS 2, ","authors_text":"2), (2) Kavli Institute for the Physics, (3) University of California, (4) University of California Observatories, (5) Durham University, 6), (6) Steward Observatory, 7), (7) Lawrence Berkeley National Laboratory, 8) ((1) University of California, (8) Max Planck Institut fur Astrophysik), Emanuele Paolo Farina (3, Feige Wang (3, Frederick B. Davies (3, Joseph F. Hennawi (3), J. Xavier Prochaska (1, Kyle B. Westfall (4), Mathematics of the Universe, Ryan J. Cooke (5), Santa Barbara, Santa Cruz, Tiffany Hsyu (1), UK, University of Arizona","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-13T18:20:08Z","title":"PypeIt: The Python Spectroscopic Data Reduction Pipeline"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.06505","kind":"arxiv","version":2},"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":"sha256:286e7c228cd7b77121e31e25ec1ee01b6e95afd70d798eb65fc5e8c63319b6a6","target":"record","created_at":"2026-07-05T01:03:44Z","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":"5d48d7579e789bce51fbac18fb14c721d0fc76e924ea60af8b028c4716aeeb57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-05-13T18:20:08Z","title_canon_sha256":"6ed8a418bfa1a9bd58c7622caf98a04a1718715a38e9ec71ac3b25a577030166"},"schema_version":"1.0","source":{"id":"2005.06505","kind":"arxiv","version":2}},"canonical_sha256":"d9c6a95b188cdaa329e75c05de98eedc0d7d71dcd40dd5afdd79a874727084a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9c6a95b188cdaa329e75c05de98eedc0d7d71dcd40dd5afdd79a874727084a7","first_computed_at":"2026-07-05T01:03:44.628775Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:03:44.628775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N4jIdzzGnGnQplLkZv5w7uQUxQ95fEcOLd5elaJMvTv2zm18ynwLkrevnFospO33LRpSfWUQa+LXwJPWXJS7BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:03:44.629246Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.06505","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:286e7c228cd7b77121e31e25ec1ee01b6e95afd70d798eb65fc5e8c63319b6a6","sha256:4ea0a073657b9c30e1dd54b8ebcb30d6516320f83429acf9a7e45906645f9a37"],"state_sha256":"50dfb8a0743c6327ada3f40c482c3b0731416315bdc741606ca5b12deb9a0d06"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9/51qUw/FL7W5SnZYZRi4eqb/CHzAONkADqFRpZUH2vVZ7xHBsQItvm0WPKuUwFi3oE9T0CSvBQILbKf2jkUAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-12T16:50:48.811278Z","bundle_sha256":"58c4668288bd073b2d87f0f7cec2b1bfde2b90155cbae0fb43df7dba9c02c7be"}}