{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:U7LECPW4Q5C35TZR7OF2GB2KOH","short_pith_number":"pith:U7LECPW4","canonical_record":{"source":{"id":"1310.2937","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-10T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"b64d366e4e39cd267f8e29baf32a2fee80c6c0664efda32c3c321a65f05a57a7","abstract_canon_sha256":"3edc2c3b14bae13847f5d0bf16e9fcfca5d7e3e5c169faf7e43fa359ab15fa8c"},"schema_version":"1.0"},"canonical_sha256":"a7d6413edc8745becf31fb8ba3074a71c3e6d05e0a9b4ff27345740f395570d2","source":{"kind":"arxiv","id":"1310.2937","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2937","created_at":"2026-05-18T01:47:06Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2937v3","created_at":"2026-05-18T01:47:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2937","created_at":"2026-05-18T01:47:06Z"},{"alias_kind":"pith_short_12","alias_value":"U7LECPW4Q5C3","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"U7LECPW4Q5C35TZR","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"U7LECPW4","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:U7LECPW4Q5C35TZR7OF2GB2KOH","target":"record","payload":{"canonical_record":{"source":{"id":"1310.2937","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-10T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"b64d366e4e39cd267f8e29baf32a2fee80c6c0664efda32c3c321a65f05a57a7","abstract_canon_sha256":"3edc2c3b14bae13847f5d0bf16e9fcfca5d7e3e5c169faf7e43fa359ab15fa8c"},"schema_version":"1.0"},"canonical_sha256":"a7d6413edc8745becf31fb8ba3074a71c3e6d05e0a9b4ff27345740f395570d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:06.817756Z","signature_b64":"yAzEPZUmolCYV0lN0UkK2XUmhecHdZ5283PD7ewZhjp6MaKQxE5s4UG9zFG6jxLN7gWtfCWHjNiU5fVN8sgGCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7d6413edc8745becf31fb8ba3074a71c3e6d05e0a9b4ff27345740f395570d2","last_reissued_at":"2026-05-18T01:47:06.817157Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:06.817157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.2937","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:47:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NDeJ2cI7UvqyRjPXJj95OjTUeByntSBBQXgxaUNiPsDxQdoezYZWplMWLxPmvQLva92jvCWsxBg/BVhbbwIUCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:36:58.742808Z"},"content_sha256":"46b1ece272c3ec7479610aff7a14d6ab4d9ef44143dccdce863b4732b2bd0ec4","schema_version":"1.0","event_id":"sha256:46b1ece272c3ec7479610aff7a14d6ab4d9ef44143dccdce863b4732b2bd0ec4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:U7LECPW4Q5C35TZR7OF2GB2KOH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring the total Galactic extinction with SDSS BHB stars","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Chao Liu, Hai-Jun Tian, Jing-Yao Hu, Xue-Lei Chen, Yang Xu","submitted_at":"2013-10-10T20:00:00Z","abstract_excerpt":"Aims: We used 12,530 photometrically-selected blue horizontal branch (BHB) stars from the Sloan Digital Sky Survey (SDSS) to estimate the total extinction of the Milky Way at the high Galactic latitudes, $R_V$ and $A_V$ in each line of sight. Methods: A Bayesian method was developed to estimate the reddening values in the given lines of sight. Based on the most likely values of reddening in multiple colors, we were able to derive the values of $R_V$ and $A_V$.\n  Results: We selected 94 zero-reddened BHB stars from seven globular clusters as the template. The reddening in the four SDSS colors f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2937","kind":"arxiv","version":3},"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":"2026-05-18T01:47:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qMsRE+qaD0LJjWiNn8QHXjcQGsfsjZBdmGzVMSDcf59ugvfRJr+1bekD5jI2DHufvHUzlMSR3BCXW/QJZxVyAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:36:58.743152Z"},"content_sha256":"24bc15feaf3263d5708114b803ecee482dea70f5b0d1d43b55c5c85540763b26","schema_version":"1.0","event_id":"sha256:24bc15feaf3263d5708114b803ecee482dea70f5b0d1d43b55c5c85540763b26"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U7LECPW4Q5C35TZR7OF2GB2KOH/bundle.json","state_url":"https://pith.science/pith/U7LECPW4Q5C35TZR7OF2GB2KOH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U7LECPW4Q5C35TZR7OF2GB2KOH/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":"2026-06-02T10:36:58Z","links":{"resolver":"https://pith.science/pith/U7LECPW4Q5C35TZR7OF2GB2KOH","bundle":"https://pith.science/pith/U7LECPW4Q5C35TZR7OF2GB2KOH/bundle.json","state":"https://pith.science/pith/U7LECPW4Q5C35TZR7OF2GB2KOH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U7LECPW4Q5C35TZR7OF2GB2KOH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:U7LECPW4Q5C35TZR7OF2GB2KOH","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":"3edc2c3b14bae13847f5d0bf16e9fcfca5d7e3e5c169faf7e43fa359ab15fa8c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-10T20:00:00Z","title_canon_sha256":"b64d366e4e39cd267f8e29baf32a2fee80c6c0664efda32c3c321a65f05a57a7"},"schema_version":"1.0","source":{"id":"1310.2937","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.2937","created_at":"2026-05-18T01:47:06Z"},{"alias_kind":"arxiv_version","alias_value":"1310.2937v3","created_at":"2026-05-18T01:47:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.2937","created_at":"2026-05-18T01:47:06Z"},{"alias_kind":"pith_short_12","alias_value":"U7LECPW4Q5C3","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"U7LECPW4Q5C35TZR","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"U7LECPW4","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:24bc15feaf3263d5708114b803ecee482dea70f5b0d1d43b55c5c85540763b26","target":"graph","created_at":"2026-05-18T01:47:06Z","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":"Aims: We used 12,530 photometrically-selected blue horizontal branch (BHB) stars from the Sloan Digital Sky Survey (SDSS) to estimate the total extinction of the Milky Way at the high Galactic latitudes, $R_V$ and $A_V$ in each line of sight. Methods: A Bayesian method was developed to estimate the reddening values in the given lines of sight. Based on the most likely values of reddening in multiple colors, we were able to derive the values of $R_V$ and $A_V$.\n  Results: We selected 94 zero-reddened BHB stars from seven globular clusters as the template. The reddening in the four SDSS colors f","authors_text":"Chao Liu, Hai-Jun Tian, Jing-Yao Hu, Xue-Lei Chen, Yang Xu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-10T20:00:00Z","title":"Exploring the total Galactic extinction with SDSS BHB stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.2937","kind":"arxiv","version":3},"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":"sha256:46b1ece272c3ec7479610aff7a14d6ab4d9ef44143dccdce863b4732b2bd0ec4","target":"record","created_at":"2026-05-18T01:47:06Z","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":"3edc2c3b14bae13847f5d0bf16e9fcfca5d7e3e5c169faf7e43fa359ab15fa8c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-10-10T20:00:00Z","title_canon_sha256":"b64d366e4e39cd267f8e29baf32a2fee80c6c0664efda32c3c321a65f05a57a7"},"schema_version":"1.0","source":{"id":"1310.2937","kind":"arxiv","version":3}},"canonical_sha256":"a7d6413edc8745becf31fb8ba3074a71c3e6d05e0a9b4ff27345740f395570d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7d6413edc8745becf31fb8ba3074a71c3e6d05e0a9b4ff27345740f395570d2","first_computed_at":"2026-05-18T01:47:06.817157Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:06.817157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yAzEPZUmolCYV0lN0UkK2XUmhecHdZ5283PD7ewZhjp6MaKQxE5s4UG9zFG6jxLN7gWtfCWHjNiU5fVN8sgGCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:06.817756Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.2937","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46b1ece272c3ec7479610aff7a14d6ab4d9ef44143dccdce863b4732b2bd0ec4","sha256:24bc15feaf3263d5708114b803ecee482dea70f5b0d1d43b55c5c85540763b26"],"state_sha256":"f45a8a7d8a3981149e635e6bf03e9ee8ad29919aec50c1de09816e65583d318d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jrE1dJy32j0HoA2CNv5Okovkpi9J2FCfYsFr21H5KT//BOtwqq1wljByALJYwZnoPDKKtISfRpm95wgz7pdEBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:36:58.745347Z","bundle_sha256":"7e31ae6e64d148ee77ce8238fde5b528a700a4d73fbbfa6a2c92fc4550cee823"}}