{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TNI26LHBCZDDZQ6SODGI4DXMOU","short_pith_number":"pith:TNI26LHB","canonical_record":{"source":{"id":"1507.04714","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-16T19:18:39Z","cross_cats_sorted":[],"title_canon_sha256":"f0cfb6b85d007405ca2a299d6dc2ca49420e8b7695dc271b9d5c44a99d5d2e15","abstract_canon_sha256":"6127d9446b5f1fa59e3a997603f2fa67d56cef8fd760256eb4bc5c26c34e25b2"},"schema_version":"1.0"},"canonical_sha256":"9b51af2ce116463cc3d270cc8e0eec751d2ed2177306d0b1bc55dc5947cdb1a1","source":{"kind":"arxiv","id":"1507.04714","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.04714","created_at":"2026-05-18T01:35:06Z"},{"alias_kind":"arxiv_version","alias_value":"1507.04714v2","created_at":"2026-05-18T01:35:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.04714","created_at":"2026-05-18T01:35:06Z"},{"alias_kind":"pith_short_12","alias_value":"TNI26LHBCZDD","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TNI26LHBCZDDZQ6S","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TNI26LHB","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TNI26LHBCZDDZQ6SODGI4DXMOU","target":"record","payload":{"canonical_record":{"source":{"id":"1507.04714","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-16T19:18:39Z","cross_cats_sorted":[],"title_canon_sha256":"f0cfb6b85d007405ca2a299d6dc2ca49420e8b7695dc271b9d5c44a99d5d2e15","abstract_canon_sha256":"6127d9446b5f1fa59e3a997603f2fa67d56cef8fd760256eb4bc5c26c34e25b2"},"schema_version":"1.0"},"canonical_sha256":"9b51af2ce116463cc3d270cc8e0eec751d2ed2177306d0b1bc55dc5947cdb1a1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:06.832134Z","signature_b64":"C8uYSsvZHtgLymfSL162upe28rU6ZbEuDWfWve8ZAaz3bZ/JH2s2vvdbIspThu4ngCuFY8g7Tz9PRxQmjSprBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b51af2ce116463cc3d270cc8e0eec751d2ed2177306d0b1bc55dc5947cdb1a1","last_reissued_at":"2026-05-18T01:35:06.831411Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:06.831411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.04714","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:35:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8F5nPX7HRVeqWbTSPzRnPNfKo3qS5ehyKmQwRo5XZq9zSB+yByhtMPpftVFUUWrhXhs+ILjEYMuw1y2xKrEFDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:49:26.790480Z"},"content_sha256":"07e0175e44ecdc67abb74ea91f9ef59c44327f76e1c269c50280ed60fe48dd53","schema_version":"1.0","event_id":"sha256:07e0175e44ecdc67abb74ea91f9ef59c44327f76e1c269c50280ed60fe48dd53"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TNI26LHBCZDDZQ6SODGI4DXMOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An RR Lyrae family portrait: 33 stars observed in Pisces with K2-E2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"E. Guggenberger, E. Plachy, J. M. Nemec, K. Kolenberg, L. Moln\\'ar, P. A. Moskalik, R. Poleski, R. Smolec, R. Szab\\'o, Z. Koll\\'ath","submitted_at":"2015-07-16T19:18:39Z","abstract_excerpt":"A detailed analysis is presented of 33 RR Lyrae stars in Pisces observed with the Kepler space telescope over the 8.9-day long K2 Two-Wheel Concept Engineering Test. The sample includes not only fundamental-mode and first overtone (RRab and RRc) stars but the first two double-mode (RRd) stars that Kepler detected and the only modulated first-overtone star ever observed from space so far. The precision of the extracted K2 light curves made it possible to detect low-amplitude additional modes in all subtypes. All RRd and non-modulated RRc stars show the additional mode at P_X/P_1~0.61 that was d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.04714","kind":"arxiv","version":2},"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":"2026-05-18T01:35:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Kh++Rgc2t3+/OLc8fK5tFbGW383cUvkkTxHKn/NdQw/+ILxR8ZUUBynJp+IolC0RhNT6+w1861c8JI2hCnbCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:49:26.790829Z"},"content_sha256":"ea2aedc089ede91e2a32649beecad9fa9d1964bf60e76ac49e0e07914a4fc3ec","schema_version":"1.0","event_id":"sha256:ea2aedc089ede91e2a32649beecad9fa9d1964bf60e76ac49e0e07914a4fc3ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TNI26LHBCZDDZQ6SODGI4DXMOU/bundle.json","state_url":"https://pith.science/pith/TNI26LHBCZDDZQ6SODGI4DXMOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TNI26LHBCZDDZQ6SODGI4DXMOU/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":"2026-05-30T00:49:26Z","links":{"resolver":"https://pith.science/pith/TNI26LHBCZDDZQ6SODGI4DXMOU","bundle":"https://pith.science/pith/TNI26LHBCZDDZQ6SODGI4DXMOU/bundle.json","state":"https://pith.science/pith/TNI26LHBCZDDZQ6SODGI4DXMOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TNI26LHBCZDDZQ6SODGI4DXMOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TNI26LHBCZDDZQ6SODGI4DXMOU","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":"6127d9446b5f1fa59e3a997603f2fa67d56cef8fd760256eb4bc5c26c34e25b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-16T19:18:39Z","title_canon_sha256":"f0cfb6b85d007405ca2a299d6dc2ca49420e8b7695dc271b9d5c44a99d5d2e15"},"schema_version":"1.0","source":{"id":"1507.04714","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.04714","created_at":"2026-05-18T01:35:06Z"},{"alias_kind":"arxiv_version","alias_value":"1507.04714v2","created_at":"2026-05-18T01:35:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.04714","created_at":"2026-05-18T01:35:06Z"},{"alias_kind":"pith_short_12","alias_value":"TNI26LHBCZDD","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TNI26LHBCZDDZQ6S","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TNI26LHB","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:ea2aedc089ede91e2a32649beecad9fa9d1964bf60e76ac49e0e07914a4fc3ec","target":"graph","created_at":"2026-05-18T01:35:06Z","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":"A detailed analysis is presented of 33 RR Lyrae stars in Pisces observed with the Kepler space telescope over the 8.9-day long K2 Two-Wheel Concept Engineering Test. The sample includes not only fundamental-mode and first overtone (RRab and RRc) stars but the first two double-mode (RRd) stars that Kepler detected and the only modulated first-overtone star ever observed from space so far. The precision of the extracted K2 light curves made it possible to detect low-amplitude additional modes in all subtypes. All RRd and non-modulated RRc stars show the additional mode at P_X/P_1~0.61 that was d","authors_text":"E. Guggenberger, E. Plachy, J. M. Nemec, K. Kolenberg, L. Moln\\'ar, P. A. Moskalik, R. Poleski, R. Smolec, R. Szab\\'o, Z. Koll\\'ath","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-16T19:18:39Z","title":"An RR Lyrae family portrait: 33 stars observed in Pisces with K2-E2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.04714","kind":"arxiv","version":2},"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":"sha256:07e0175e44ecdc67abb74ea91f9ef59c44327f76e1c269c50280ed60fe48dd53","target":"record","created_at":"2026-05-18T01:35:06Z","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":"6127d9446b5f1fa59e3a997603f2fa67d56cef8fd760256eb4bc5c26c34e25b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-16T19:18:39Z","title_canon_sha256":"f0cfb6b85d007405ca2a299d6dc2ca49420e8b7695dc271b9d5c44a99d5d2e15"},"schema_version":"1.0","source":{"id":"1507.04714","kind":"arxiv","version":2}},"canonical_sha256":"9b51af2ce116463cc3d270cc8e0eec751d2ed2177306d0b1bc55dc5947cdb1a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b51af2ce116463cc3d270cc8e0eec751d2ed2177306d0b1bc55dc5947cdb1a1","first_computed_at":"2026-05-18T01:35:06.831411Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:06.831411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C8uYSsvZHtgLymfSL162upe28rU6ZbEuDWfWve8ZAaz3bZ/JH2s2vvdbIspThu4ngCuFY8g7Tz9PRxQmjSprBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:06.832134Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.04714","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:07e0175e44ecdc67abb74ea91f9ef59c44327f76e1c269c50280ed60fe48dd53","sha256:ea2aedc089ede91e2a32649beecad9fa9d1964bf60e76ac49e0e07914a4fc3ec"],"state_sha256":"595f7e8b8c646c21d9306a176f7de27c070ddbd559f4731820031921025c3cb6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8ABYfTWlqcAMmsY14Dv4JWEkm0gm3tESrud2uW0hwUud9dJP21X2vnMbdcyUiowsaX6lk7uLmaDeySaSMA8VCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T00:49:26.792894Z","bundle_sha256":"659b24e048d1dc2925403996ebbf3fb862cf8386ce8d217ad3fd8c6fc3f58a56"}}