{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ULWIZGURS5YACI6YJQ436WBAPU","short_pith_number":"pith:ULWIZGUR","canonical_record":{"source":{"id":"2608.10779","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-11T10:31:22Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"a39a167fc7cddb353b6c40dfe3e1c8412a41d647bffb445c58da0dde43429e06","abstract_canon_sha256":"faef2b884266ec20291f656e2d38528927007a066354815dcd1c9aeaecd1f13a"},"schema_version":"1.0"},"canonical_sha256":"a2ec8c9a9197700123d84c39bf58207d2f203d72dec48015c9715748524ba79f","source":{"kind":"arxiv","id":"2608.10779","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.10779","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"arxiv_version","alias_value":"2608.10779v1","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.10779","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"pith_short_12","alias_value":"ULWIZGURS5YA","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"pith_short_16","alias_value":"ULWIZGURS5YACI6Y","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"pith_short_8","alias_value":"ULWIZGUR","created_at":"2026-08-12T01:23:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ULWIZGURS5YACI6YJQ436WBAPU","target":"record","payload":{"canonical_record":{"source":{"id":"2608.10779","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-11T10:31:22Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"a39a167fc7cddb353b6c40dfe3e1c8412a41d647bffb445c58da0dde43429e06","abstract_canon_sha256":"faef2b884266ec20291f656e2d38528927007a066354815dcd1c9aeaecd1f13a"},"schema_version":"1.0"},"canonical_sha256":"a2ec8c9a9197700123d84c39bf58207d2f203d72dec48015c9715748524ba79f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-12T01:23:15.681873Z","signature_b64":"ZwmGJqBHMpVRYLPf6J0Z0mHMjOS9qbh//m6zRZguHCTeWp2U5I6QWZMkLpeabtRI5yn5AgoWRc55kdC3OtXBBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2ec8c9a9197700123d84c39bf58207d2f203d72dec48015c9715748524ba79f","last_reissued_at":"2026-08-12T01:23:15.680242Z","signature_status":"signed_v1","first_computed_at":"2026-08-12T01:23:15.680242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.10779","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":"2026-08-12T01:23:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z05kC8wtBhRouuUOYinzkTB0duoCtlf7oPQdtAtfJ5Gg/u/biRWVfhnXQdUJFZzKYbmiLD7y1TY3PnRaFhWNAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T02:38:45.245384Z"},"content_sha256":"546eea99eb634ebf75b3710eae00e8e74debf18196dbac7ae6d04487fcd3c152","schema_version":"1.0","event_id":"sha256:546eea99eb634ebf75b3710eae00e8e74debf18196dbac7ae6d04487fcd3c152"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ULWIZGURS5YACI6YJQ436WBAPU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bernhard-1: An Eccentric Binary Periodically Obscured by its Misaligned Circumbinary Disk","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Ping Chen, Richard Post, Weicheng Zang, Wei Zhu, Zhecheng Hu","submitted_at":"2026-08-11T10:31:22Z","abstract_excerpt":"Bernhard-1 is a proposed KH 15D-like circumbinary disk occultation (CBO) system, but its binary nature and disk geometry have not previously been confirmed. We present new optical and near-infrared spectroscopy together with multi-band photometric monitoring of the system. The radial velocities confirm that Bernhard-1 hosts a highly eccentric binary with $e = 0.80 \\pm 0.09$, confirming that the periodic photometric variability arises from occultation by a misaligned circumbinary disk. Joint modeling of the spectra and phase-dependent spectral energy distributions yields pre-main-sequence compo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.10779","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/2608.10779/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":"2026-08-12T01:23:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YfM/v2AqZGJEoJm3GIUj/9pgpYmzXqO20x3MHXI/rnXkGY6BUzNqm7P1yP3d9Bjy7kFfXxzSvt/mnjZ0u2DaBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T02:38:45.245922Z"},"content_sha256":"573f2e701faba46bb8f8c140baaaaf43f256264287ef21949a310f4a79003efa","schema_version":"1.0","event_id":"sha256:573f2e701faba46bb8f8c140baaaaf43f256264287ef21949a310f4a79003efa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ULWIZGURS5YACI6YJQ436WBAPU/bundle.json","state_url":"https://pith.science/pith/ULWIZGURS5YACI6YJQ436WBAPU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ULWIZGURS5YACI6YJQ436WBAPU/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":"2026-08-15T02:38:45Z","links":{"resolver":"https://pith.science/pith/ULWIZGURS5YACI6YJQ436WBAPU","bundle":"https://pith.science/pith/ULWIZGURS5YACI6YJQ436WBAPU/bundle.json","state":"https://pith.science/pith/ULWIZGURS5YACI6YJQ436WBAPU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ULWIZGURS5YACI6YJQ436WBAPU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ULWIZGURS5YACI6YJQ436WBAPU","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":"faef2b884266ec20291f656e2d38528927007a066354815dcd1c9aeaecd1f13a","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-11T10:31:22Z","title_canon_sha256":"a39a167fc7cddb353b6c40dfe3e1c8412a41d647bffb445c58da0dde43429e06"},"schema_version":"1.0","source":{"id":"2608.10779","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.10779","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"arxiv_version","alias_value":"2608.10779v1","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.10779","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"pith_short_12","alias_value":"ULWIZGURS5YA","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"pith_short_16","alias_value":"ULWIZGURS5YACI6Y","created_at":"2026-08-12T01:23:15Z"},{"alias_kind":"pith_short_8","alias_value":"ULWIZGUR","created_at":"2026-08-12T01:23:15Z"}],"graph_snapshots":[{"event_id":"sha256:573f2e701faba46bb8f8c140baaaaf43f256264287ef21949a310f4a79003efa","target":"graph","created_at":"2026-08-12T01:23:15Z","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/2608.10779/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Bernhard-1 is a proposed KH 15D-like circumbinary disk occultation (CBO) system, but its binary nature and disk geometry have not previously been confirmed. We present new optical and near-infrared spectroscopy together with multi-band photometric monitoring of the system. The radial velocities confirm that Bernhard-1 hosts a highly eccentric binary with $e = 0.80 \\pm 0.09$, confirming that the periodic photometric variability arises from occultation by a misaligned circumbinary disk. Joint modeling of the spectra and phase-dependent spectral energy distributions yields pre-main-sequence compo","authors_text":"Ping Chen, Richard Post, Weicheng Zang, Wei Zhu, Zhecheng Hu","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-11T10:31:22Z","title":"Bernhard-1: An Eccentric Binary Periodically Obscured by its Misaligned Circumbinary Disk"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.10779","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":"sha256:546eea99eb634ebf75b3710eae00e8e74debf18196dbac7ae6d04487fcd3c152","target":"record","created_at":"2026-08-12T01:23:15Z","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":"faef2b884266ec20291f656e2d38528927007a066354815dcd1c9aeaecd1f13a","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-08-11T10:31:22Z","title_canon_sha256":"a39a167fc7cddb353b6c40dfe3e1c8412a41d647bffb445c58da0dde43429e06"},"schema_version":"1.0","source":{"id":"2608.10779","kind":"arxiv","version":1}},"canonical_sha256":"a2ec8c9a9197700123d84c39bf58207d2f203d72dec48015c9715748524ba79f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2ec8c9a9197700123d84c39bf58207d2f203d72dec48015c9715748524ba79f","first_computed_at":"2026-08-12T01:23:15.680242Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-12T01:23:15.680242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZwmGJqBHMpVRYLPf6J0Z0mHMjOS9qbh//m6zRZguHCTeWp2U5I6QWZMkLpeabtRI5yn5AgoWRc55kdC3OtXBBw==","signature_status":"signed_v1","signed_at":"2026-08-12T01:23:15.681873Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.10779","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:546eea99eb634ebf75b3710eae00e8e74debf18196dbac7ae6d04487fcd3c152","sha256:573f2e701faba46bb8f8c140baaaaf43f256264287ef21949a310f4a79003efa"],"state_sha256":"7828e9014f529fadf7c01f30d2812f10a512c8711268f69617664298ecb13a6a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4lDRb2FL7R7pmgSeE/i6WJ8wnJlZmq9UD2fvNl1H+SngkZpEVlNpMO7r8QArQJMNmV2Q2mxQ+Ac4c7WoSZh0BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T02:38:45.252296Z","bundle_sha256":"a9c7c595ce67befc3d48e32da739a14d4ec00e414e88d8179ada3f45f22d93c2"}}