{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:747TOGJLMYJULZTHXWU4NCUMLX","short_pith_number":"pith:747TOGJL","canonical_record":{"source":{"id":"2202.01703","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-02-03T17:13:05Z","cross_cats_sorted":[],"title_canon_sha256":"3213558c34afd7ee65b8ba493248d409c22e7495c957a910f8d557bfa45000ad","abstract_canon_sha256":"9104e811535aed274d5657983bf98774b9c100e4370cf248fb07754edbf2d9ce"},"schema_version":"1.0"},"canonical_sha256":"ff3f37192b661345e667bda9c68a8c5de841aae564e13e85b2a8f0b0b12781f9","source":{"kind":"arxiv","id":"2202.01703","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.01703","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"arxiv_version","alias_value":"2202.01703v1","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.01703","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"pith_short_12","alias_value":"747TOGJLMYJU","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"pith_short_16","alias_value":"747TOGJLMYJULZTH","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"pith_short_8","alias_value":"747TOGJL","created_at":"2026-07-05T03:53:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:747TOGJLMYJULZTHXWU4NCUMLX","target":"record","payload":{"canonical_record":{"source":{"id":"2202.01703","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-02-03T17:13:05Z","cross_cats_sorted":[],"title_canon_sha256":"3213558c34afd7ee65b8ba493248d409c22e7495c957a910f8d557bfa45000ad","abstract_canon_sha256":"9104e811535aed274d5657983bf98774b9c100e4370cf248fb07754edbf2d9ce"},"schema_version":"1.0"},"canonical_sha256":"ff3f37192b661345e667bda9c68a8c5de841aae564e13e85b2a8f0b0b12781f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:53:57.045429Z","signature_b64":"RNWKUEVb0DsewEgJNbIxOwaS4TOuRuCoXq/ar9ZVIt4C0PiipHxhQXOfXPN5LmM2+AgKw7o0PDfWq6wgtCzuBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff3f37192b661345e667bda9c68a8c5de841aae564e13e85b2a8f0b0b12781f9","last_reissued_at":"2026-07-05T03:53:57.044992Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:53:57.044992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.01703","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":"2026-07-05T03:53:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AeoaoWSD+aTBrpxbmMMa9qbe4iNzTYzWnUqgCeDYi8GIVytKt/bJo9QaqiPbjEfmYpXQlQaJDVuQy7O8gREjBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:51:37.899430Z"},"content_sha256":"61fc1e4f05e97b20119d800128d2b9404d986f1e173f74ce522db47e64122ec9","schema_version":"1.0","event_id":"sha256:61fc1e4f05e97b20119d800128d2b9404d986f1e173f74ce522db47e64122ec9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:747TOGJLMYJULZTHXWU4NCUMLX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interstellar reddening correction using He I lines","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"\\'Angeles I. D\\'iaz, Elena Terlevich, S. Zamora, Vital Fern\\'andez","submitted_at":"2022-02-03T17:13:05Z","abstract_excerpt":"We present a method to derive the logarithmic extinction coefficient in optical wavelengths using the emission lines of HeI. Using this procedure we can avoid selection biases when studying regions with different surface brightness and we can obtain better measurements of temperature lines, for example [SIII]6312."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.01703","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/2202.01703/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":"2026-07-05T03:53:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FyggF8Lc+yCayQ/hEQJqtHFn0Rn5gNutKg32pdSw9vCeL3N/pX0jO85xliOxVsI4hLCfTvT3kNdewDYZQyGKAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:51:37.899926Z"},"content_sha256":"2e676683e6398214198f4bec82a4bb41d35ee75c887736e4a676004edddb31f1","schema_version":"1.0","event_id":"sha256:2e676683e6398214198f4bec82a4bb41d35ee75c887736e4a676004edddb31f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/747TOGJLMYJULZTHXWU4NCUMLX/bundle.json","state_url":"https://pith.science/pith/747TOGJLMYJULZTHXWU4NCUMLX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/747TOGJLMYJULZTHXWU4NCUMLX/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":"2026-08-05T09:51:37Z","links":{"resolver":"https://pith.science/pith/747TOGJLMYJULZTHXWU4NCUMLX","bundle":"https://pith.science/pith/747TOGJLMYJULZTHXWU4NCUMLX/bundle.json","state":"https://pith.science/pith/747TOGJLMYJULZTHXWU4NCUMLX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/747TOGJLMYJULZTHXWU4NCUMLX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:747TOGJLMYJULZTHXWU4NCUMLX","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":"9104e811535aed274d5657983bf98774b9c100e4370cf248fb07754edbf2d9ce","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-02-03T17:13:05Z","title_canon_sha256":"3213558c34afd7ee65b8ba493248d409c22e7495c957a910f8d557bfa45000ad"},"schema_version":"1.0","source":{"id":"2202.01703","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.01703","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"arxiv_version","alias_value":"2202.01703v1","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.01703","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"pith_short_12","alias_value":"747TOGJLMYJU","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"pith_short_16","alias_value":"747TOGJLMYJULZTH","created_at":"2026-07-05T03:53:57Z"},{"alias_kind":"pith_short_8","alias_value":"747TOGJL","created_at":"2026-07-05T03:53:57Z"}],"graph_snapshots":[{"event_id":"sha256:2e676683e6398214198f4bec82a4bb41d35ee75c887736e4a676004edddb31f1","target":"graph","created_at":"2026-07-05T03:53:57Z","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/2202.01703/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a method to derive the logarithmic extinction coefficient in optical wavelengths using the emission lines of HeI. Using this procedure we can avoid selection biases when studying regions with different surface brightness and we can obtain better measurements of temperature lines, for example [SIII]6312.","authors_text":"\\'Angeles I. D\\'iaz, Elena Terlevich, S. Zamora, Vital Fern\\'andez","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-02-03T17:13:05Z","title":"Interstellar reddening correction using He I lines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.01703","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":"sha256:61fc1e4f05e97b20119d800128d2b9404d986f1e173f74ce522db47e64122ec9","target":"record","created_at":"2026-07-05T03:53:57Z","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":"9104e811535aed274d5657983bf98774b9c100e4370cf248fb07754edbf2d9ce","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-02-03T17:13:05Z","title_canon_sha256":"3213558c34afd7ee65b8ba493248d409c22e7495c957a910f8d557bfa45000ad"},"schema_version":"1.0","source":{"id":"2202.01703","kind":"arxiv","version":1}},"canonical_sha256":"ff3f37192b661345e667bda9c68a8c5de841aae564e13e85b2a8f0b0b12781f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff3f37192b661345e667bda9c68a8c5de841aae564e13e85b2a8f0b0b12781f9","first_computed_at":"2026-07-05T03:53:57.044992Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:53:57.044992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RNWKUEVb0DsewEgJNbIxOwaS4TOuRuCoXq/ar9ZVIt4C0PiipHxhQXOfXPN5LmM2+AgKw7o0PDfWq6wgtCzuBw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:53:57.045429Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.01703","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61fc1e4f05e97b20119d800128d2b9404d986f1e173f74ce522db47e64122ec9","sha256:2e676683e6398214198f4bec82a4bb41d35ee75c887736e4a676004edddb31f1"],"state_sha256":"651ad35873714704cc4b748b3f26c5db5739e2b1d866d24ad0a47b4b0df46fbd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OhB6bxmW20LFDBB4SzJgycR9RYLAI53p8c6H5pYrJs0PuldNCNgOhfK+Jb9id1dvyxqtInLfNA66Gs8MdUmbAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T09:51:37.905069Z","bundle_sha256":"289389f4e6e3e8621ce0da2c097a7b1680d37aa51b026dac644762ecd5174156"}}