{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:DZI2SUPEXQGHKHI5WUGJR3SJKC","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":"dc4271da310b8138abbecf3b4e3a2f14e3493ebe0aed7ba91832464c4e63a519","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-20T07:54:33Z","title_canon_sha256":"2de01d99a01951014f29bc27784e3d1bea5a62e5c5920c7fb3ef7b604139c3c6"},"schema_version":"1.0","source":{"id":"2004.09109","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.09109","created_at":"2026-07-05T03:22:56Z"},{"alias_kind":"arxiv_version","alias_value":"2004.09109v1","created_at":"2026-07-05T03:22:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.09109","created_at":"2026-07-05T03:22:56Z"},{"alias_kind":"pith_short_12","alias_value":"DZI2SUPEXQGH","created_at":"2026-07-05T03:22:56Z"},{"alias_kind":"pith_short_16","alias_value":"DZI2SUPEXQGHKHI5","created_at":"2026-07-05T03:22:56Z"},{"alias_kind":"pith_short_8","alias_value":"DZI2SUPE","created_at":"2026-07-05T03:22:56Z"}],"graph_snapshots":[{"event_id":"sha256:f88eac25f33df4a1c9112fe8cc59e6b93b04b53724bc874d92b17f8c0911ea13","target":"graph","created_at":"2026-07-05T03:22:56Z","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/2004.09109/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We homogeneously reanalyse $124$ transit light curves for the WASP-4 b hot Jupiter. This set involved new observations secured in 2019 and nearly all observations mentioned in the literature, including high-accuracy GEMINI/GMOS transmission spectroscopy of 2011-2014 and TESS observations of 2018. The analysis confirmed a nonlinear TTV trend with $P/|\\dot P|\\sim (17-30)$ Myr (1-sigma range), implying only half of the initial decay rate estimation. The trend significance is at least $3.4$-sigma in the agressively conservative treatment. Possible radial acceleration due to unseen companions is no","authors_text":"C. Huitson, C.R. Knight, E.N. Sokov, I.A. Sokova, Jos\\'e A.R.S. da Silva, P. Evans, R.V. Baluev, S. Hoyer, V.Sh. Shaidulin","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-20T07:54:33Z","title":"WASP-4 transit timing variation from a comprehensive set of 129 transits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.09109","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:a6875c4ca8a51bf6a5ee7ad4fe5944fa6415fbf03072130bd43d49fbbb3baf07","target":"record","created_at":"2026-07-05T03:22:56Z","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":"dc4271da310b8138abbecf3b4e3a2f14e3493ebe0aed7ba91832464c4e63a519","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-20T07:54:33Z","title_canon_sha256":"2de01d99a01951014f29bc27784e3d1bea5a62e5c5920c7fb3ef7b604139c3c6"},"schema_version":"1.0","source":{"id":"2004.09109","kind":"arxiv","version":1}},"canonical_sha256":"1e51a951e4bc0c751d1db50c98ee4950a60220fd001cfa9de1895ace4b2bc1ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e51a951e4bc0c751d1db50c98ee4950a60220fd001cfa9de1895ace4b2bc1ca","first_computed_at":"2026-07-05T03:22:56.932019Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:22:56.932019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wUf4a/uxCTvbT2AlT6Duetkj3uuhj4ldoTdKIL0eaqzHe/M9kIEi6nvWWFGQ4ifMKHhNNvQkIRuALtl07wGkBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:22:56.932529Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.09109","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6875c4ca8a51bf6a5ee7ad4fe5944fa6415fbf03072130bd43d49fbbb3baf07","sha256:f88eac25f33df4a1c9112fe8cc59e6b93b04b53724bc874d92b17f8c0911ea13"],"state_sha256":"03ee19d5d729e02a27e813553fc7dc3978eecf6638b5838e622c1511fc088f78"}