{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:YQMYWGPEVCKWZHS4QRGDEVFNOO","short_pith_number":"pith:YQMYWGPE","canonical_record":{"source":{"id":"2012.00778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-01T19:01:56Z","cross_cats_sorted":[],"title_canon_sha256":"58922d119334e22ae196625f857c90b25125b5a031e7051db173922f2217005a","abstract_canon_sha256":"ab9c79173587b1df11a3cadbb4d9cb3a80345920b5d1cd9eecd14af9938d9321"},"schema_version":"1.0"},"canonical_sha256":"c4198b19e4a8956c9e5c844c3254ad73978c3ebce9c4ac4465de7f36058d17d8","source":{"kind":"arxiv","id":"2012.00778","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.00778","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"arxiv_version","alias_value":"2012.00778v1","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.00778","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"pith_short_12","alias_value":"YQMYWGPEVCKW","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"pith_short_16","alias_value":"YQMYWGPEVCKWZHS4","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"pith_short_8","alias_value":"YQMYWGPE","created_at":"2026-07-05T02:04:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:YQMYWGPEVCKWZHS4QRGDEVFNOO","target":"record","payload":{"canonical_record":{"source":{"id":"2012.00778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-01T19:01:56Z","cross_cats_sorted":[],"title_canon_sha256":"58922d119334e22ae196625f857c90b25125b5a031e7051db173922f2217005a","abstract_canon_sha256":"ab9c79173587b1df11a3cadbb4d9cb3a80345920b5d1cd9eecd14af9938d9321"},"schema_version":"1.0"},"canonical_sha256":"c4198b19e4a8956c9e5c844c3254ad73978c3ebce9c4ac4465de7f36058d17d8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:04:48.631779Z","signature_b64":"G+EoScAtT9rwAXhUpNnxAcgtnwSG5hnNGvpOjLZLheEMNrci23DOCFmQrkZDuOOu3U1w9IAwtdRXB82MzClDBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4198b19e4a8956c9e5c844c3254ad73978c3ebce9c4ac4465de7f36058d17d8","last_reissued_at":"2026-07-05T02:04:48.631243Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:04:48.631243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.00778","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":"2026-07-05T02:04:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kKzy6Lxcg451Gj9s5zyA0MXd2IwxqJs3IWolIJiBLw+0PEvHB6FwqDJd8F2g+fFpXZEDjmNDS1Kv7WFBLBjaCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T16:05:09.400182Z"},"content_sha256":"2121cf7b35bcd88a50646e1c1472c87644551fb93f27ac8a60ee54d9bbe68dd5","schema_version":"1.0","event_id":"sha256:2121cf7b35bcd88a50646e1c1472c87644551fb93f27ac8a60ee54d9bbe68dd5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:YQMYWGPEVCKWZHS4QRGDEVFNOO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ARMADA I: Triple Companions Detected in B-Type Binaries alpha Del and nu Gem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) Tennessee State University, (3) The CHARA Array of Georgia State University, (4) Institut de Planetologie et d'Astrophysique de Grenoble, (5) University of Exeter, (6) University of Arizona, (7) KU Leuven, (8) Australian National University), Aaron Labdon (5), Ann Arbor, Benjamin R. Setterholm (1), Chris Farrington (3), Claire L. Davies (5), Cyprien Lanthermann (7), Douglas R. Gies (3), Francis C. Fekel (2), Fred C. Adams (1) ((1) University of Michigan, Gail Schaefer (3), Jacob Ennis (1), Jean-Baptiste Le Bouquin (4), John D. Monnier (1), Judit Sturmann (3), Kaitlin M. Kratter (6), Keith J.C. Johnson (1), Laszlo Sturmann (3), Michael Ireland (8), Narsireddy Anugu (6), Robert Klement (3), Stefan Kraus (5), Theo Ten Brummelaar (3), Tyler Gardner (1)","submitted_at":"2020-12-01T19:01:56Z","abstract_excerpt":"Ground-based optical long-baseline interferometry has the power to measure the orbits of close binary systems at ~10 micro-arcsecond precision. This precision makes it possible to detect \"wobbles\" in the binary motion due to the gravitational pull from additional short period companions. We started the ARrangement for Micro-Arcsecond Differential Astrometry (ARMADA) survey with the MIRC-X instrument at the CHARA array for the purpose of detecting giant planets and stellar companions orbiting individual stars in binary systems. We describe our observations for the survey, and introduce the wave"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.00778","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/2012.00778/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":"2026-07-05T02:04:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5n9lI7yWAV9arFGit8B5RZ2ZeA3h7apQM5xxGlW86npQTvI3g4XJYeV7+bJgXkklpKrLoE2q+2PAWJ2ftCGICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T16:05:09.400584Z"},"content_sha256":"95142fd7e8184d81fdd0ec1efd69b4ecd49b8ccf7bae403ac5b59e57d45eb841","schema_version":"1.0","event_id":"sha256:95142fd7e8184d81fdd0ec1efd69b4ecd49b8ccf7bae403ac5b59e57d45eb841"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YQMYWGPEVCKWZHS4QRGDEVFNOO/bundle.json","state_url":"https://pith.science/pith/YQMYWGPEVCKWZHS4QRGDEVFNOO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YQMYWGPEVCKWZHS4QRGDEVFNOO/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":"2026-07-08T16:05:09Z","links":{"resolver":"https://pith.science/pith/YQMYWGPEVCKWZHS4QRGDEVFNOO","bundle":"https://pith.science/pith/YQMYWGPEVCKWZHS4QRGDEVFNOO/bundle.json","state":"https://pith.science/pith/YQMYWGPEVCKWZHS4QRGDEVFNOO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YQMYWGPEVCKWZHS4QRGDEVFNOO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YQMYWGPEVCKWZHS4QRGDEVFNOO","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":"ab9c79173587b1df11a3cadbb4d9cb3a80345920b5d1cd9eecd14af9938d9321","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-01T19:01:56Z","title_canon_sha256":"58922d119334e22ae196625f857c90b25125b5a031e7051db173922f2217005a"},"schema_version":"1.0","source":{"id":"2012.00778","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.00778","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"arxiv_version","alias_value":"2012.00778v1","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.00778","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"pith_short_12","alias_value":"YQMYWGPEVCKW","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"pith_short_16","alias_value":"YQMYWGPEVCKWZHS4","created_at":"2026-07-05T02:04:48Z"},{"alias_kind":"pith_short_8","alias_value":"YQMYWGPE","created_at":"2026-07-05T02:04:48Z"}],"graph_snapshots":[{"event_id":"sha256:95142fd7e8184d81fdd0ec1efd69b4ecd49b8ccf7bae403ac5b59e57d45eb841","target":"graph","created_at":"2026-07-05T02:04:48Z","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/2012.00778/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ground-based optical long-baseline interferometry has the power to measure the orbits of close binary systems at ~10 micro-arcsecond precision. This precision makes it possible to detect \"wobbles\" in the binary motion due to the gravitational pull from additional short period companions. We started the ARrangement for Micro-Arcsecond Differential Astrometry (ARMADA) survey with the MIRC-X instrument at the CHARA array for the purpose of detecting giant planets and stellar companions orbiting individual stars in binary systems. We describe our observations for the survey, and introduce the wave","authors_text":"(2) Tennessee State University, (3) The CHARA Array of Georgia State University, (4) Institut de Planetologie et d'Astrophysique de Grenoble, (5) University of Exeter, (6) University of Arizona, (7) KU Leuven, (8) Australian National University), Aaron Labdon (5), Ann Arbor, Benjamin R. Setterholm (1), Chris Farrington (3), Claire L. Davies (5), Cyprien Lanthermann (7), Douglas R. Gies (3), Francis C. Fekel (2), Fred C. Adams (1) ((1) University of Michigan, Gail Schaefer (3), Jacob Ennis (1), Jean-Baptiste Le Bouquin (4), John D. Monnier (1), Judit Sturmann (3), Kaitlin M. Kratter (6), Keith J.C. Johnson (1), Laszlo Sturmann (3), Michael Ireland (8), Narsireddy Anugu (6), Robert Klement (3), Stefan Kraus (5), Theo Ten Brummelaar (3), Tyler Gardner (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-01T19:01:56Z","title":"ARMADA I: Triple Companions Detected in B-Type Binaries alpha Del and nu Gem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.00778","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":"sha256:2121cf7b35bcd88a50646e1c1472c87644551fb93f27ac8a60ee54d9bbe68dd5","target":"record","created_at":"2026-07-05T02:04:48Z","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":"ab9c79173587b1df11a3cadbb4d9cb3a80345920b5d1cd9eecd14af9938d9321","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-12-01T19:01:56Z","title_canon_sha256":"58922d119334e22ae196625f857c90b25125b5a031e7051db173922f2217005a"},"schema_version":"1.0","source":{"id":"2012.00778","kind":"arxiv","version":1}},"canonical_sha256":"c4198b19e4a8956c9e5c844c3254ad73978c3ebce9c4ac4465de7f36058d17d8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4198b19e4a8956c9e5c844c3254ad73978c3ebce9c4ac4465de7f36058d17d8","first_computed_at":"2026-07-05T02:04:48.631243Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:04:48.631243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G+EoScAtT9rwAXhUpNnxAcgtnwSG5hnNGvpOjLZLheEMNrci23DOCFmQrkZDuOOu3U1w9IAwtdRXB82MzClDBw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:04:48.631779Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.00778","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2121cf7b35bcd88a50646e1c1472c87644551fb93f27ac8a60ee54d9bbe68dd5","sha256:95142fd7e8184d81fdd0ec1efd69b4ecd49b8ccf7bae403ac5b59e57d45eb841"],"state_sha256":"003ba969b2ff1e7d3318362d3d91553287fd351bf957e6d4d80915c625eb7463"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tyzEfeghu4VUDMugGFhmke8VVJni+23QhCbfgUcvVPZ3+zA1BcuKR+ECpY0icpup1IKRquEx1JLkeBLQhKHTCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T16:05:09.402668Z","bundle_sha256":"c02f7a098eecec60a8c25931ccf7cb0b1f0062ac5e4d2d63bc94600c63b18c92"}}