{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:4QKIWGVYJNKFVOKY4XRE4KFKYB","short_pith_number":"pith:4QKIWGVY","canonical_record":{"source":{"id":"1904.11896","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-26T15:26:41Z","cross_cats_sorted":[],"title_canon_sha256":"26b0d1a75bf5a4ba28c686bd71b32c5cea609a809cbd5b50595c31e2f00899da","abstract_canon_sha256":"9c9be925e84062d21c55cab941eff8ca819d6306028401963389a677f98a7d7c"},"schema_version":"1.0"},"canonical_sha256":"e4148b1ab84b545ab958e5e24e28aac0436c0c4da13a607035bae3a08432cc1f","source":{"kind":"arxiv","id":"1904.11896","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11896","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11896v2","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11896","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"4QKIWGVYJNKF","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"pith_short_16","alias_value":"4QKIWGVYJNKFVOKY","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"pith_short_8","alias_value":"4QKIWGVY","created_at":"2026-07-05T00:48:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:4QKIWGVYJNKFVOKY4XRE4KFKYB","target":"record","payload":{"canonical_record":{"source":{"id":"1904.11896","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-26T15:26:41Z","cross_cats_sorted":[],"title_canon_sha256":"26b0d1a75bf5a4ba28c686bd71b32c5cea609a809cbd5b50595c31e2f00899da","abstract_canon_sha256":"9c9be925e84062d21c55cab941eff8ca819d6306028401963389a677f98a7d7c"},"schema_version":"1.0"},"canonical_sha256":"e4148b1ab84b545ab958e5e24e28aac0436c0c4da13a607035bae3a08432cc1f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:48:15.048436Z","signature_b64":"IhhVRplECVFvFJWQy22BeTdnIHSChshkHC6Ij12gXpQ/ho7lwj7xHxj7LfFbrnXsRk6F9hJ8swVZ9LS7+jYqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4148b1ab84b545ab958e5e24e28aac0436c0c4da13a607035bae3a08432cc1f","last_reissued_at":"2026-07-05T00:48:15.047935Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:48:15.047935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.11896","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":"2026-07-05T00:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4mxBFcu6Yz+gnXx/HJPHszSiGaK1xJYgyu3jST0D5s8anwhKSGRwNRTHgGBqXGRTrvx/RYoIWpve8qXa1BMEBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:20:13.962018Z"},"content_sha256":"e7f060873590f10f91512186ce83b7b591e0b988da2c9fe8a70f00650cba49a4","schema_version":"1.0","event_id":"sha256:e7f060873590f10f91512186ce83b7b591e0b988da2c9fe8a70f00650cba49a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:4QKIWGVYJNKFVOKY4XRE4KFKYB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Loose Ends for the Exomoon Candidate Host Kepler-1625b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alex Teachey, Andrew W. Howard, Christopher J. Burke, David Kipping, Ruth Angus","submitted_at":"2019-04-26T15:26:41Z","abstract_excerpt":"The claim of an exomoon candidate in the Kepler-1625b system has generated substantial discussion regarding possible alternative explanations for the purported signal. In this work we examine in detail these possibilities. First, the effect of more flexible trend models is explored and we show that sufficiently flexible models are capable of attenuating the signal, although this is an expected byproduct of invoking such models. We also explore trend models using X and Y centroid positions and show that there is no data-driven impetus to adopt such models over temporal ones. We quantify the pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11896","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1904.11896/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":"2026-07-05T00:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e2kuS88pUoAHLBBVi0SuXxLjdE4f61n73eVFU9O0E0fIkm+wEI5NzWa1mEvSIicJ5gTPcQNGs6URq28istFeBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T07:20:13.962503Z"},"content_sha256":"2692c8bce757b3b17a1232423b5eb2e296337092c5b47baa1be559537894e8a8","schema_version":"1.0","event_id":"sha256:2692c8bce757b3b17a1232423b5eb2e296337092c5b47baa1be559537894e8a8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4QKIWGVYJNKFVOKY4XRE4KFKYB/bundle.json","state_url":"https://pith.science/pith/4QKIWGVYJNKFVOKY4XRE4KFKYB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4QKIWGVYJNKFVOKY4XRE4KFKYB/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":"2026-08-11T07:20:13Z","links":{"resolver":"https://pith.science/pith/4QKIWGVYJNKFVOKY4XRE4KFKYB","bundle":"https://pith.science/pith/4QKIWGVYJNKFVOKY4XRE4KFKYB/bundle.json","state":"https://pith.science/pith/4QKIWGVYJNKFVOKY4XRE4KFKYB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4QKIWGVYJNKFVOKY4XRE4KFKYB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:4QKIWGVYJNKFVOKY4XRE4KFKYB","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":"9c9be925e84062d21c55cab941eff8ca819d6306028401963389a677f98a7d7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-26T15:26:41Z","title_canon_sha256":"26b0d1a75bf5a4ba28c686bd71b32c5cea609a809cbd5b50595c31e2f00899da"},"schema_version":"1.0","source":{"id":"1904.11896","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11896","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11896v2","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11896","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"4QKIWGVYJNKF","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"pith_short_16","alias_value":"4QKIWGVYJNKFVOKY","created_at":"2026-07-05T00:48:15Z"},{"alias_kind":"pith_short_8","alias_value":"4QKIWGVY","created_at":"2026-07-05T00:48:15Z"}],"graph_snapshots":[{"event_id":"sha256:2692c8bce757b3b17a1232423b5eb2e296337092c5b47baa1be559537894e8a8","target":"graph","created_at":"2026-07-05T00:48:15Z","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/1904.11896/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The claim of an exomoon candidate in the Kepler-1625b system has generated substantial discussion regarding possible alternative explanations for the purported signal. In this work we examine in detail these possibilities. First, the effect of more flexible trend models is explored and we show that sufficiently flexible models are capable of attenuating the signal, although this is an expected byproduct of invoking such models. We also explore trend models using X and Y centroid positions and show that there is no data-driven impetus to adopt such models over temporal ones. We quantify the pro","authors_text":"Alex Teachey, Andrew W. Howard, Christopher J. Burke, David Kipping, Ruth Angus","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-26T15:26:41Z","title":"Loose Ends for the Exomoon Candidate Host Kepler-1625b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11896","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:e7f060873590f10f91512186ce83b7b591e0b988da2c9fe8a70f00650cba49a4","target":"record","created_at":"2026-07-05T00:48:15Z","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":"9c9be925e84062d21c55cab941eff8ca819d6306028401963389a677f98a7d7c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-04-26T15:26:41Z","title_canon_sha256":"26b0d1a75bf5a4ba28c686bd71b32c5cea609a809cbd5b50595c31e2f00899da"},"schema_version":"1.0","source":{"id":"1904.11896","kind":"arxiv","version":2}},"canonical_sha256":"e4148b1ab84b545ab958e5e24e28aac0436c0c4da13a607035bae3a08432cc1f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4148b1ab84b545ab958e5e24e28aac0436c0c4da13a607035bae3a08432cc1f","first_computed_at":"2026-07-05T00:48:15.047935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:48:15.047935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IhhVRplECVFvFJWQy22BeTdnIHSChshkHC6Ij12gXpQ/ho7lwj7xHxj7LfFbrnXsRk6F9hJ8swVZ9LS7+jYqBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:48:15.048436Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.11896","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e7f060873590f10f91512186ce83b7b591e0b988da2c9fe8a70f00650cba49a4","sha256:2692c8bce757b3b17a1232423b5eb2e296337092c5b47baa1be559537894e8a8"],"state_sha256":"cd575ea091bc93f5d4f7fbe248d6f1e732d155559b8ca3566d9a53a0101431d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V6XRYp44UmpSn97y4IUfYx8RlohhUtlfi4WR93pqOuAB6Ta52v8N9TMCrw8MapFuHWgFV4xSKPVqX9at+eYOBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T07:20:13.966883Z","bundle_sha256":"b9f2d08f27b85740babd4afcca4c9eca463066286ccc25530438c9cf13833feb"}}