{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:OQEBE7P22OZU5SJWXB464H3OFZ","short_pith_number":"pith:OQEBE7P2","canonical_record":{"source":{"id":"2007.12482","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-23T15:46:06Z","cross_cats_sorted":["astro-ph.EP","physics.ao-ph"],"title_canon_sha256":"061bbcb22a9438517c2c3898b9e9014eca7523b69b0df2081f2e095ae4512d74","abstract_canon_sha256":"da064e280c1f53a7084c6bf0ec441ac95bdb1251c9c945b86751cc41ba977a5e"},"schema_version":"1.0"},"canonical_sha256":"7408127dfad3b34ec936b879ee1f6e2e684319c83af2ae9cc65e8dad84c7102e","source":{"kind":"arxiv","id":"2007.12482","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.12482","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"arxiv_version","alias_value":"2007.12482v1","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.12482","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"pith_short_12","alias_value":"OQEBE7P22OZU","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"pith_short_16","alias_value":"OQEBE7P22OZU5SJW","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"pith_short_8","alias_value":"OQEBE7P2","created_at":"2026-07-05T01:21:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:OQEBE7P22OZU5SJWXB464H3OFZ","target":"record","payload":{"canonical_record":{"source":{"id":"2007.12482","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-23T15:46:06Z","cross_cats_sorted":["astro-ph.EP","physics.ao-ph"],"title_canon_sha256":"061bbcb22a9438517c2c3898b9e9014eca7523b69b0df2081f2e095ae4512d74","abstract_canon_sha256":"da064e280c1f53a7084c6bf0ec441ac95bdb1251c9c945b86751cc41ba977a5e"},"schema_version":"1.0"},"canonical_sha256":"7408127dfad3b34ec936b879ee1f6e2e684319c83af2ae9cc65e8dad84c7102e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:21:52.737346Z","signature_b64":"40PCOcuSFalPDQzzZ9cZupv0zROcvYjiS8xNH3snXErbdLOlSjIdrIWR4Ydud7Q0ns40lcpZ0R6CHNxt/wMXBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7408127dfad3b34ec936b879ee1f6e2e684319c83af2ae9cc65e8dad84c7102e","last_reissued_at":"2026-07-05T01:21:52.736904Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:21:52.736904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.12482","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":"2026-07-05T01:21:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"129ZHgrn4/E9iboK9EGyu1487Fw/eYhxDPeX6BqFoqwCQRCG61rTkkjexBU2vo3Lxh5ogIqXKLEkQmuxKmThBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:31:36.971834Z"},"content_sha256":"29d7dac53ed45ff87af03f4fe9a0e2ebb3401a20912e73c2b9654fb69f829519","schema_version":"1.0","event_id":"sha256:29d7dac53ed45ff87af03f4fe9a0e2ebb3401a20912e73c2b9654fb69f829519"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:OQEBE7P22OZU5SJWXB464H3OFZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detection of polarization neutral points in observations of the combined corona and sky during the 21 August 2017 total solar eclipse","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","physics.ao-ph"],"primary_cat":"astro-ph.SR","authors_text":"David S. Doelman, Dmitry Vorobiev, Emiel H. Por, Felix Bettonvil, Frans Snik, Joseph A. Shaw, Laura M. Eshelman, Michiel Rodenhuis, Stefanie A. Brackenhoff, Steven P. Bos","submitted_at":"2020-07-23T15:46:06Z","abstract_excerpt":"We report the results of polarimetric observations of the total solar eclipse of 21 August 2017 from Rexburg, Idaho (USA). We use three synchronized DSLR cameras with polarization filters oriented at 0{\\deg}, 60{\\deg}, and 120{\\deg} to provide high-dynamic-range RGB polarization images of the corona and surrounding sky. We measure tangential coronal polarization and vertical sky polarization, both as expected. These observations provide detailed detections of polarization neutral points above and below the eclipsed Sun where the coronal polarization is canceled by the sky polarization. We name"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.12482","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/2007.12482/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":"2026-07-05T01:21:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l5dMo74Y40BFO6OgmcIG1qlcMzlD09NXw9b2tx368pbqbFe8LeUhddy14kn/KserrIX6e8Tfqr2VrjBdNxghCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:31:36.972831Z"},"content_sha256":"0efa10c33f60c3555c84142ae344226f33f11b38d00542c295af230840c171c4","schema_version":"1.0","event_id":"sha256:0efa10c33f60c3555c84142ae344226f33f11b38d00542c295af230840c171c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OQEBE7P22OZU5SJWXB464H3OFZ/bundle.json","state_url":"https://pith.science/pith/OQEBE7P22OZU5SJWXB464H3OFZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OQEBE7P22OZU5SJWXB464H3OFZ/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":"2026-08-04T21:31:36Z","links":{"resolver":"https://pith.science/pith/OQEBE7P22OZU5SJWXB464H3OFZ","bundle":"https://pith.science/pith/OQEBE7P22OZU5SJWXB464H3OFZ/bundle.json","state":"https://pith.science/pith/OQEBE7P22OZU5SJWXB464H3OFZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OQEBE7P22OZU5SJWXB464H3OFZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:OQEBE7P22OZU5SJWXB464H3OFZ","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":"da064e280c1f53a7084c6bf0ec441ac95bdb1251c9c945b86751cc41ba977a5e","cross_cats_sorted":["astro-ph.EP","physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-23T15:46:06Z","title_canon_sha256":"061bbcb22a9438517c2c3898b9e9014eca7523b69b0df2081f2e095ae4512d74"},"schema_version":"1.0","source":{"id":"2007.12482","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.12482","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"arxiv_version","alias_value":"2007.12482v1","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.12482","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"pith_short_12","alias_value":"OQEBE7P22OZU","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"pith_short_16","alias_value":"OQEBE7P22OZU5SJW","created_at":"2026-07-05T01:21:52Z"},{"alias_kind":"pith_short_8","alias_value":"OQEBE7P2","created_at":"2026-07-05T01:21:52Z"}],"graph_snapshots":[{"event_id":"sha256:0efa10c33f60c3555c84142ae344226f33f11b38d00542c295af230840c171c4","target":"graph","created_at":"2026-07-05T01:21:52Z","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/2007.12482/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the results of polarimetric observations of the total solar eclipse of 21 August 2017 from Rexburg, Idaho (USA). We use three synchronized DSLR cameras with polarization filters oriented at 0{\\deg}, 60{\\deg}, and 120{\\deg} to provide high-dynamic-range RGB polarization images of the corona and surrounding sky. We measure tangential coronal polarization and vertical sky polarization, both as expected. These observations provide detailed detections of polarization neutral points above and below the eclipsed Sun where the coronal polarization is canceled by the sky polarization. We name","authors_text":"David S. Doelman, Dmitry Vorobiev, Emiel H. Por, Felix Bettonvil, Frans Snik, Joseph A. Shaw, Laura M. Eshelman, Michiel Rodenhuis, Stefanie A. Brackenhoff, Steven P. Bos","cross_cats":["astro-ph.EP","physics.ao-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-23T15:46:06Z","title":"Detection of polarization neutral points in observations of the combined corona and sky during the 21 August 2017 total solar eclipse"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.12482","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":"sha256:29d7dac53ed45ff87af03f4fe9a0e2ebb3401a20912e73c2b9654fb69f829519","target":"record","created_at":"2026-07-05T01:21:52Z","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":"da064e280c1f53a7084c6bf0ec441ac95bdb1251c9c945b86751cc41ba977a5e","cross_cats_sorted":["astro-ph.EP","physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-23T15:46:06Z","title_canon_sha256":"061bbcb22a9438517c2c3898b9e9014eca7523b69b0df2081f2e095ae4512d74"},"schema_version":"1.0","source":{"id":"2007.12482","kind":"arxiv","version":1}},"canonical_sha256":"7408127dfad3b34ec936b879ee1f6e2e684319c83af2ae9cc65e8dad84c7102e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7408127dfad3b34ec936b879ee1f6e2e684319c83af2ae9cc65e8dad84c7102e","first_computed_at":"2026-07-05T01:21:52.736904Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:21:52.736904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"40PCOcuSFalPDQzzZ9cZupv0zROcvYjiS8xNH3snXErbdLOlSjIdrIWR4Ydud7Q0ns40lcpZ0R6CHNxt/wMXBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:21:52.737346Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.12482","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29d7dac53ed45ff87af03f4fe9a0e2ebb3401a20912e73c2b9654fb69f829519","sha256:0efa10c33f60c3555c84142ae344226f33f11b38d00542c295af230840c171c4"],"state_sha256":"c3bec3e21acf3c26d2bba12e4939ce78187006f60d8edfb260af91f3fbbb1966"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SsUKwvybkZdgVzpwLi2F6WAGp7MFWoQv/Dxk0yFh4fQ22wcn5v/SZH5mcWM9TGn6ieJ5MBj6N+GrmxfUjo0EBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T21:31:36.987800Z","bundle_sha256":"64f3c883c8e442db4a93bd942c02580709bad69c0d6f57e5ddd387b7c630148a"}}