{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:WJRYPV6SIMDYDCFHLXIYHKEZ2U","short_pith_number":"pith:WJRYPV6S","canonical_record":{"source":{"id":"1904.10896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-24T16:05:21Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"43f99fc2de66e2d34b868db8ede63f77f113be934678898f6f8dca3dc0eca2be","abstract_canon_sha256":"f64e0c72fdf0ae261af4fff1b8086b1b86daad27240bfac08493bc20f096da4a"},"schema_version":"1.0"},"canonical_sha256":"b26387d7d243078188a75dd183a899d5365743bd2d1f3f1af49cc048270da551","source":{"kind":"arxiv","id":"1904.10896","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.10896","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"arxiv_version","alias_value":"1904.10896v1","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.10896","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"pith_short_12","alias_value":"WJRYPV6SIMDY","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WJRYPV6SIMDYDCFH","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WJRYPV6S","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:WJRYPV6SIMDYDCFHLXIYHKEZ2U","target":"record","payload":{"canonical_record":{"source":{"id":"1904.10896","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-24T16:05:21Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"43f99fc2de66e2d34b868db8ede63f77f113be934678898f6f8dca3dc0eca2be","abstract_canon_sha256":"f64e0c72fdf0ae261af4fff1b8086b1b86daad27240bfac08493bc20f096da4a"},"schema_version":"1.0"},"canonical_sha256":"b26387d7d243078188a75dd183a899d5365743bd2d1f3f1af49cc048270da551","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:32.393492Z","signature_b64":"hQBYqQKYm9o2Yo8Pd8RaH1r5t58qNaoGOk59j7lMhSx7mRbAwzX7LLlcETnJGelvhpPwF5SCuL5s/bigB0d2CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b26387d7d243078188a75dd183a899d5365743bd2d1f3f1af49cc048270da551","last_reissued_at":"2026-05-17T23:40:32.392809Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:32.392809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.10896","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":"2026-05-17T23:40:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s3x7CLiYLrJgJE56Qqxg/29omXrr0wvYR2mh9KBJ6+3CXxvCXsVWBfUh0aB7dsHDppJ8V1AENo3eLaKGbmi6AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:23:50.405502Z"},"content_sha256":"641161bf1e7af305553c2b6c5821895f2f12153f2f292d4183e9797bc41c990e","schema_version":"1.0","event_id":"sha256:641161bf1e7af305553c2b6c5821895f2f12153f2f292d4183e9797bc41c990e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:WJRYPV6SIMDYDCFHLXIYHKEZ2U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Shallow Ultraviolet Transits of WD 1145+017","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Akihiko Fukui, Amy Steele, Andrew Vanderburg, Ben Zuckerman, Beth Klein, Bruce Gary, John Debes, Kate Y. L. Su, Maude Fortin-Archambault, Michael A. Jura, Na'ama Hallakoun, Nobuhiko Kusakabe, Noriharu Watanabe, Norio Narita, Patrick Dufour, Paul A. Dalba, Philip S. Muirhead, Siyi Xu, Zhuchang Zhan","submitted_at":"2019-04-24T16:05:21Z","abstract_excerpt":"WD 1145+017 is a unique white dwarf system that has a heavily polluted atmosphere, an infrared excess from a dust disk, numerous broad absorption lines from circumstellar gas, and changing transit features, likely from fragments of an actively disintegrating asteroid. Here, we present results from a large photometric and spectroscopic campaign with Hubble, Keck , VLT, Spitzer, and many other smaller telescopes from 2015 to 2018. Somewhat surprisingly, but consistent with previous observations in the u' band, the UV transit depths are always shallower than those in the optical. We develop a mod"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.10896","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":"2026-05-17T23:40:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VkIU3zI0nMANNxQDmhBdjsumpSvKIUMmuLbqDLygFzJlSJwgstdyPCuvTpNlPwM/+MlZDmISdmjIaHhuVDQDAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:23:50.406244Z"},"content_sha256":"d48d13647a44f798b8c2d258c7d7963f780edfece41b6753c9f8aa59ce95ca16","schema_version":"1.0","event_id":"sha256:d48d13647a44f798b8c2d258c7d7963f780edfece41b6753c9f8aa59ce95ca16"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WJRYPV6SIMDYDCFHLXIYHKEZ2U/bundle.json","state_url":"https://pith.science/pith/WJRYPV6SIMDYDCFHLXIYHKEZ2U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WJRYPV6SIMDYDCFHLXIYHKEZ2U/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":"2026-05-25T13:23:50Z","links":{"resolver":"https://pith.science/pith/WJRYPV6SIMDYDCFHLXIYHKEZ2U","bundle":"https://pith.science/pith/WJRYPV6SIMDYDCFHLXIYHKEZ2U/bundle.json","state":"https://pith.science/pith/WJRYPV6SIMDYDCFHLXIYHKEZ2U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WJRYPV6SIMDYDCFHLXIYHKEZ2U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WJRYPV6SIMDYDCFHLXIYHKEZ2U","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":"f64e0c72fdf0ae261af4fff1b8086b1b86daad27240bfac08493bc20f096da4a","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-24T16:05:21Z","title_canon_sha256":"43f99fc2de66e2d34b868db8ede63f77f113be934678898f6f8dca3dc0eca2be"},"schema_version":"1.0","source":{"id":"1904.10896","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.10896","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"arxiv_version","alias_value":"1904.10896v1","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.10896","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"pith_short_12","alias_value":"WJRYPV6SIMDY","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"WJRYPV6SIMDYDCFH","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"WJRYPV6S","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:d48d13647a44f798b8c2d258c7d7963f780edfece41b6753c9f8aa59ce95ca16","target":"graph","created_at":"2026-05-17T23:40:32Z","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":"WD 1145+017 is a unique white dwarf system that has a heavily polluted atmosphere, an infrared excess from a dust disk, numerous broad absorption lines from circumstellar gas, and changing transit features, likely from fragments of an actively disintegrating asteroid. Here, we present results from a large photometric and spectroscopic campaign with Hubble, Keck , VLT, Spitzer, and many other smaller telescopes from 2015 to 2018. Somewhat surprisingly, but consistent with previous observations in the u' band, the UV transit depths are always shallower than those in the optical. We develop a mod","authors_text":"Akihiko Fukui, Amy Steele, Andrew Vanderburg, Ben Zuckerman, Beth Klein, Bruce Gary, John Debes, Kate Y. L. Su, Maude Fortin-Archambault, Michael A. Jura, Na'ama Hallakoun, Nobuhiko Kusakabe, Noriharu Watanabe, Norio Narita, Patrick Dufour, Paul A. Dalba, Philip S. Muirhead, Siyi Xu, Zhuchang Zhan","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-24T16:05:21Z","title":"Shallow Ultraviolet Transits of WD 1145+017"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.10896","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":"sha256:641161bf1e7af305553c2b6c5821895f2f12153f2f292d4183e9797bc41c990e","target":"record","created_at":"2026-05-17T23:40:32Z","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":"f64e0c72fdf0ae261af4fff1b8086b1b86daad27240bfac08493bc20f096da4a","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-24T16:05:21Z","title_canon_sha256":"43f99fc2de66e2d34b868db8ede63f77f113be934678898f6f8dca3dc0eca2be"},"schema_version":"1.0","source":{"id":"1904.10896","kind":"arxiv","version":1}},"canonical_sha256":"b26387d7d243078188a75dd183a899d5365743bd2d1f3f1af49cc048270da551","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b26387d7d243078188a75dd183a899d5365743bd2d1f3f1af49cc048270da551","first_computed_at":"2026-05-17T23:40:32.392809Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:32.392809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hQBYqQKYm9o2Yo8Pd8RaH1r5t58qNaoGOk59j7lMhSx7mRbAwzX7LLlcETnJGelvhpPwF5SCuL5s/bigB0d2CQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:32.393492Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.10896","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:641161bf1e7af305553c2b6c5821895f2f12153f2f292d4183e9797bc41c990e","sha256:d48d13647a44f798b8c2d258c7d7963f780edfece41b6753c9f8aa59ce95ca16"],"state_sha256":"8c1d47d38ad810562cd37007a909ded8d69e4913e97d498d32aaf707691e887f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/gspyBXo3KYNMlFHGIuCk5R00TBAH4c02/ZROmQWZpnq6szH1ztTafDd/oGeVMfBIMWnjLg5xNXBzWsUSnJZDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:23:50.409908Z","bundle_sha256":"c968c5ee69d47c0e0a51bdc4814c30ae4659360a2d56f7091339485517b4d99a"}}