{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2TN6GLNHOXG223HK3QLCJ2WIPJ","short_pith_number":"pith:2TN6GLNH","canonical_record":{"source":{"id":"2004.04530","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-08T07:13:48Z","cross_cats_sorted":[],"title_canon_sha256":"48d452f08056b8d8b5f17913bc45cdec8f173c47a7895b3674c67acb8a8fe779","abstract_canon_sha256":"5d07c1021fd27b9c52e4b95f3df102a502e183b6299b882b49222024880d1958"},"schema_version":"1.0"},"canonical_sha256":"d4dbe32da775cdad6ceadc1624eac87a56ce07b75d4a2f4c9881fd0759b6ab5b","source":{"kind":"arxiv","id":"2004.04530","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.04530","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"arxiv_version","alias_value":"2004.04530v1","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.04530","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"pith_short_12","alias_value":"2TN6GLNHOXG2","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"pith_short_16","alias_value":"2TN6GLNHOXG223HK","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"pith_short_8","alias_value":"2TN6GLNH","created_at":"2026-07-05T01:04:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2TN6GLNHOXG223HK3QLCJ2WIPJ","target":"record","payload":{"canonical_record":{"source":{"id":"2004.04530","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-08T07:13:48Z","cross_cats_sorted":[],"title_canon_sha256":"48d452f08056b8d8b5f17913bc45cdec8f173c47a7895b3674c67acb8a8fe779","abstract_canon_sha256":"5d07c1021fd27b9c52e4b95f3df102a502e183b6299b882b49222024880d1958"},"schema_version":"1.0"},"canonical_sha256":"d4dbe32da775cdad6ceadc1624eac87a56ce07b75d4a2f4c9881fd0759b6ab5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:04:22.081626Z","signature_b64":"fHPeNIQgkCeUwE5XZnblk6hsi+t1ZD8AHaQU0tXfdThc+UywDTEy79trQjklJ9gmpcJMhtOQ67BhwT6EUyYnCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4dbe32da775cdad6ceadc1624eac87a56ce07b75d4a2f4c9881fd0759b6ab5b","last_reissued_at":"2026-07-05T01:04:22.081158Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:04:22.081158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.04530","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":"2026-07-05T01:04:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ldp5IVhlDQwcnkyHsMHGHPwPJ9Ry9eSgLPKYBfmF9l5IIcmEfj6tMolg/tzLmGXudwQxDXGUF69TF0L8LQAkCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T22:34:42.090320Z"},"content_sha256":"eeb2e9d11b52f8293cb0946c375f285f81fa657f67627c7ce239d32a1c8cc8fa","schema_version":"1.0","event_id":"sha256:eeb2e9d11b52f8293cb0946c375f285f81fa657f67627c7ce239d32a1c8cc8fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2TN6GLNHOXG223HK3QLCJ2WIPJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the ratios of \\ion{Si}{4} lines ($\\lambda$1394/$\\lambda$1403) in an emerging flux region","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Durgesh Tripathi, Hiroaki Isobe, J.G. Doyle, V. N. Nived","submitted_at":"2020-04-08T07:13:48Z","abstract_excerpt":"The resonance lines of \\ion{Si}{4} formed at $\\lambda$1394 and 1403 {\\AA} are the most critical for the diagnostics of the solar transition region in the observations of the Interface Region Imaging Spectrograph (IRIS). Studying the intensity ratios of these lines (1394{\\AA}/1403{\\AA}), which under optically thin condition is predicted to be two, helps us to diagnose the optical thickness of the plasma being observed. Here we study the evolution of the distribution of intensity ratios in 31 IRIS rasters recorded for four days during the emergence of an active region. We found that during the e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.04530","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/2004.04530/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":"2026-07-05T01:04:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9Gqe1I0XjYRfzuhbeSKUZkgEUUXn0Gh5P0HWdcjqArEkgditZtPJsR3p/XzLEjjXzEIh4mzM2RGR8U1t1e8bDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T22:34:42.090923Z"},"content_sha256":"dad39872cf196a2bb3f91561247e42308b5879073747efaf5221a0da821edd14","schema_version":"1.0","event_id":"sha256:dad39872cf196a2bb3f91561247e42308b5879073747efaf5221a0da821edd14"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2TN6GLNHOXG223HK3QLCJ2WIPJ/bundle.json","state_url":"https://pith.science/pith/2TN6GLNHOXG223HK3QLCJ2WIPJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2TN6GLNHOXG223HK3QLCJ2WIPJ/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":"2026-08-19T22:34:42Z","links":{"resolver":"https://pith.science/pith/2TN6GLNHOXG223HK3QLCJ2WIPJ","bundle":"https://pith.science/pith/2TN6GLNHOXG223HK3QLCJ2WIPJ/bundle.json","state":"https://pith.science/pith/2TN6GLNHOXG223HK3QLCJ2WIPJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2TN6GLNHOXG223HK3QLCJ2WIPJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2TN6GLNHOXG223HK3QLCJ2WIPJ","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":"5d07c1021fd27b9c52e4b95f3df102a502e183b6299b882b49222024880d1958","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-08T07:13:48Z","title_canon_sha256":"48d452f08056b8d8b5f17913bc45cdec8f173c47a7895b3674c67acb8a8fe779"},"schema_version":"1.0","source":{"id":"2004.04530","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.04530","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"arxiv_version","alias_value":"2004.04530v1","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.04530","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"pith_short_12","alias_value":"2TN6GLNHOXG2","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"pith_short_16","alias_value":"2TN6GLNHOXG223HK","created_at":"2026-07-05T01:04:22Z"},{"alias_kind":"pith_short_8","alias_value":"2TN6GLNH","created_at":"2026-07-05T01:04:22Z"}],"graph_snapshots":[{"event_id":"sha256:dad39872cf196a2bb3f91561247e42308b5879073747efaf5221a0da821edd14","target":"graph","created_at":"2026-07-05T01:04:22Z","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/2004.04530/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The resonance lines of \\ion{Si}{4} formed at $\\lambda$1394 and 1403 {\\AA} are the most critical for the diagnostics of the solar transition region in the observations of the Interface Region Imaging Spectrograph (IRIS). Studying the intensity ratios of these lines (1394{\\AA}/1403{\\AA}), which under optically thin condition is predicted to be two, helps us to diagnose the optical thickness of the plasma being observed. Here we study the evolution of the distribution of intensity ratios in 31 IRIS rasters recorded for four days during the emergence of an active region. We found that during the e","authors_text":"Durgesh Tripathi, Hiroaki Isobe, J.G. Doyle, V. N. Nived","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-08T07:13:48Z","title":"On the ratios of \\ion{Si}{4} lines ($\\lambda$1394/$\\lambda$1403) in an emerging flux region"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.04530","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:eeb2e9d11b52f8293cb0946c375f285f81fa657f67627c7ce239d32a1c8cc8fa","target":"record","created_at":"2026-07-05T01:04:22Z","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":"5d07c1021fd27b9c52e4b95f3df102a502e183b6299b882b49222024880d1958","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-08T07:13:48Z","title_canon_sha256":"48d452f08056b8d8b5f17913bc45cdec8f173c47a7895b3674c67acb8a8fe779"},"schema_version":"1.0","source":{"id":"2004.04530","kind":"arxiv","version":1}},"canonical_sha256":"d4dbe32da775cdad6ceadc1624eac87a56ce07b75d4a2f4c9881fd0759b6ab5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4dbe32da775cdad6ceadc1624eac87a56ce07b75d4a2f4c9881fd0759b6ab5b","first_computed_at":"2026-07-05T01:04:22.081158Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:04:22.081158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fHPeNIQgkCeUwE5XZnblk6hsi+t1ZD8AHaQU0tXfdThc+UywDTEy79trQjklJ9gmpcJMhtOQ67BhwT6EUyYnCg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:04:22.081626Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.04530","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eeb2e9d11b52f8293cb0946c375f285f81fa657f67627c7ce239d32a1c8cc8fa","sha256:dad39872cf196a2bb3f91561247e42308b5879073747efaf5221a0da821edd14"],"state_sha256":"79d7fcec131d327af2528bd8ae8d108dc6d2d98c96848834753216ad634482b6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k2l671o5b37UwzlM/pTRNidjzquN+ippTgxLfdyRk6V75TA2p441h8x8aVUVDBgWWe6rArW0SdX7VuFZcZtSCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T22:34:42.095711Z","bundle_sha256":"b98e6b70b3670e245740285fced425579510f1ba54eeecb1aed89c422862362f"}}