{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:4WTG65ZNRHRY4VT44HRY2LBKTL","short_pith_number":"pith:4WTG65ZN","canonical_record":{"source":{"id":"1905.09121","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-22T13:20:56Z","cross_cats_sorted":[],"title_canon_sha256":"171a9a85628f13e27a0855873e0b785c93ed45590959343f299c0e5bbf27e1c7","abstract_canon_sha256":"a92d75971ecd52cbb312d223d8048e8f338b88d3b5cd6bec6b4f279659bc5d11"},"schema_version":"1.0"},"canonical_sha256":"e5a66f772d89e38e567ce1e38d2c2a9ae411da808d6d6ab8c1ccf48ff75e18d1","source":{"kind":"arxiv","id":"1905.09121","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.09121","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"arxiv_version","alias_value":"1905.09121v1","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.09121","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"pith_short_12","alias_value":"4WTG65ZNRHRY","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"4WTG65ZNRHRY4VT4","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"4WTG65ZN","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:4WTG65ZNRHRY4VT44HRY2LBKTL","target":"record","payload":{"canonical_record":{"source":{"id":"1905.09121","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-22T13:20:56Z","cross_cats_sorted":[],"title_canon_sha256":"171a9a85628f13e27a0855873e0b785c93ed45590959343f299c0e5bbf27e1c7","abstract_canon_sha256":"a92d75971ecd52cbb312d223d8048e8f338b88d3b5cd6bec6b4f279659bc5d11"},"schema_version":"1.0"},"canonical_sha256":"e5a66f772d89e38e567ce1e38d2c2a9ae411da808d6d6ab8c1ccf48ff75e18d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:21.919206Z","signature_b64":"O56pz6C/4ExXBxmcag/HT390b7JysavUI7j6l6dbLXMESZXDFokRBnGkdNp/KV0aUPwXgAIWmfyxmFIDWkgLCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5a66f772d89e38e567ce1e38d2c2a9ae411da808d6d6ab8c1ccf48ff75e18d1","last_reissued_at":"2026-05-17T23:45:21.918642Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:21.918642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.09121","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":"2026-05-17T23:45:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0xnRdwJZwA8eIV5voIPQu1qtyjzNL+M3VM9svur+aDlfESLPcQuTbjXPGXwfA+JA+Chum1iJ9Bmi46JbFEiRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:53:10.419406Z"},"content_sha256":"317385bb7bc81a2188cdae7a21bc7e4fdb4a3a6a2448b7a84bbae33b0a42aefd","schema_version":"1.0","event_id":"sha256:317385bb7bc81a2188cdae7a21bc7e4fdb4a3a6a2448b7a84bbae33b0a42aefd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:4WTG65ZNRHRY4VT44HRY2LBKTL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Statistical errors in equivalent widths -- A clarification","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Thomas Eversberg","submitted_at":"2019-05-22T13:20:56Z","abstract_excerpt":"In a recent mathematical approach, Netzel (2018) proposes a method for determining the statistical error of spectral line equivalent widths. Using various approximations, he derives a determination equation that differs significantly from earlier approaches by Vollmann \\& Eversberg (2006) and Chalabaev \\& Mailard (1983) and evaluates these works with his approach. Several points stand out, which have a not to be neglected influence on the evaluation of this approach."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.09121","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":"2026-05-17T23:45:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EdPzfe8EdYJVBXUaLwty8A5eAyacdeQ4bfPF2M5F3CLhDWkObdzQWyUitgmBzMzptClsvoYsAmOIV0/NmpKKAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:53:10.420114Z"},"content_sha256":"011bc73520d1928caf2856a8c31d2a9a90c2c54bb760d2a2ec5c5fe3c6dd8ce4","schema_version":"1.0","event_id":"sha256:011bc73520d1928caf2856a8c31d2a9a90c2c54bb760d2a2ec5c5fe3c6dd8ce4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4WTG65ZNRHRY4VT44HRY2LBKTL/bundle.json","state_url":"https://pith.science/pith/4WTG65ZNRHRY4VT44HRY2LBKTL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4WTG65ZNRHRY4VT44HRY2LBKTL/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":"2026-05-25T19:53:10Z","links":{"resolver":"https://pith.science/pith/4WTG65ZNRHRY4VT44HRY2LBKTL","bundle":"https://pith.science/pith/4WTG65ZNRHRY4VT44HRY2LBKTL/bundle.json","state":"https://pith.science/pith/4WTG65ZNRHRY4VT44HRY2LBKTL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4WTG65ZNRHRY4VT44HRY2LBKTL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:4WTG65ZNRHRY4VT44HRY2LBKTL","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":"a92d75971ecd52cbb312d223d8048e8f338b88d3b5cd6bec6b4f279659bc5d11","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-22T13:20:56Z","title_canon_sha256":"171a9a85628f13e27a0855873e0b785c93ed45590959343f299c0e5bbf27e1c7"},"schema_version":"1.0","source":{"id":"1905.09121","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.09121","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"arxiv_version","alias_value":"1905.09121v1","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.09121","created_at":"2026-05-17T23:45:21Z"},{"alias_kind":"pith_short_12","alias_value":"4WTG65ZNRHRY","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"4WTG65ZNRHRY4VT4","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"4WTG65ZN","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:011bc73520d1928caf2856a8c31d2a9a90c2c54bb760d2a2ec5c5fe3c6dd8ce4","target":"graph","created_at":"2026-05-17T23:45:21Z","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":"In a recent mathematical approach, Netzel (2018) proposes a method for determining the statistical error of spectral line equivalent widths. Using various approximations, he derives a determination equation that differs significantly from earlier approaches by Vollmann \\& Eversberg (2006) and Chalabaev \\& Mailard (1983) and evaluates these works with his approach. Several points stand out, which have a not to be neglected influence on the evaluation of this approach.","authors_text":"Thomas Eversberg","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-22T13:20:56Z","title":"Statistical errors in equivalent widths -- A clarification"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.09121","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":"sha256:317385bb7bc81a2188cdae7a21bc7e4fdb4a3a6a2448b7a84bbae33b0a42aefd","target":"record","created_at":"2026-05-17T23:45:21Z","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":"a92d75971ecd52cbb312d223d8048e8f338b88d3b5cd6bec6b4f279659bc5d11","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-22T13:20:56Z","title_canon_sha256":"171a9a85628f13e27a0855873e0b785c93ed45590959343f299c0e5bbf27e1c7"},"schema_version":"1.0","source":{"id":"1905.09121","kind":"arxiv","version":1}},"canonical_sha256":"e5a66f772d89e38e567ce1e38d2c2a9ae411da808d6d6ab8c1ccf48ff75e18d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5a66f772d89e38e567ce1e38d2c2a9ae411da808d6d6ab8c1ccf48ff75e18d1","first_computed_at":"2026-05-17T23:45:21.918642Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:21.918642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O56pz6C/4ExXBxmcag/HT390b7JysavUI7j6l6dbLXMESZXDFokRBnGkdNp/KV0aUPwXgAIWmfyxmFIDWkgLCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:21.919206Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.09121","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:317385bb7bc81a2188cdae7a21bc7e4fdb4a3a6a2448b7a84bbae33b0a42aefd","sha256:011bc73520d1928caf2856a8c31d2a9a90c2c54bb760d2a2ec5c5fe3c6dd8ce4"],"state_sha256":"e32a155e2d857d2322c6fd667829fe0c69eaaf51b5e110da1aed1a8a2c054e6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uUGjjxVTJwcbmwoTqRu1uYyR1r9SbgGQADX2o2LApkcnrgidgf43IgADgDYJNpQhzrnD5+HVU54ej33FIqN5CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:53:10.423141Z","bundle_sha256":"450d418a3e071feec2b893b9e877b465ed836f98fc2cef656da6064702cdb22e"}}