{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:JPD5T7QYOA26MCO7OBMD3SY6P5","short_pith_number":"pith:JPD5T7QY","canonical_record":{"source":{"id":"1704.00203","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-01T17:51:39Z","cross_cats_sorted":[],"title_canon_sha256":"6ee0a6fff76993270f2aeb2ed548768bc0e9829be419f1b40662b3468fdc4a45","abstract_canon_sha256":"013b1427768f557801c0ab292986c295fe761ecde7f38f136e26113db74c901b"},"schema_version":"1.0"},"canonical_sha256":"4bc7d9fe187035e609df70583dcb1e7f51fb0978b9a3a0d3f52f3e9bde582398","source":{"kind":"arxiv","id":"1704.00203","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00203","created_at":"2026-05-18T00:39:36Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00203v2","created_at":"2026-05-18T00:39:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00203","created_at":"2026-05-18T00:39:36Z"},{"alias_kind":"pith_short_12","alias_value":"JPD5T7QYOA26","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JPD5T7QYOA26MCO7","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JPD5T7QY","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:JPD5T7QYOA26MCO7OBMD3SY6P5","target":"record","payload":{"canonical_record":{"source":{"id":"1704.00203","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-01T17:51:39Z","cross_cats_sorted":[],"title_canon_sha256":"6ee0a6fff76993270f2aeb2ed548768bc0e9829be419f1b40662b3468fdc4a45","abstract_canon_sha256":"013b1427768f557801c0ab292986c295fe761ecde7f38f136e26113db74c901b"},"schema_version":"1.0"},"canonical_sha256":"4bc7d9fe187035e609df70583dcb1e7f51fb0978b9a3a0d3f52f3e9bde582398","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:36.121449Z","signature_b64":"uzgwYE8OYii+OcOkBV2oxjCRqQUFg6Lt5EQNsGLwPyjBy8Lp0OyCqm1sSUMWME+whBIRNZ3/654P8xEz9fmFBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4bc7d9fe187035e609df70583dcb1e7f51fb0978b9a3a0d3f52f3e9bde582398","last_reissued_at":"2026-05-18T00:39:36.120801Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:36.120801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.00203","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":"2026-05-18T00:39:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8DS2trsd1hmbDwJ0h9M/k6iUD9D9q2V7SxZ6hO2w1S67Py7x834aDFwemm4NKea9K3a+P6xrAEa5keuAc9RyBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:30:12.954644Z"},"content_sha256":"3bab09d51b41addb408f04f95e09c39423f988949bfcedf94aa1d219a42162ad","schema_version":"1.0","event_id":"sha256:3bab09d51b41addb408f04f95e09c39423f988949bfcedf94aa1d219a42162ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:JPD5T7QYOA26MCO7OBMD3SY6P5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Absence of a metallicity effect for ultra-short-period planets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Andrew W. Howard, Erik A. Petigura, Geoffrey W. Marcy, Howard Isaacson, Joshua N. Winn, Kevin Schlaufman, Leslie Hebb, Leslie Rogers, Phillip Cargile, Roberto Sanchis-Ojeda","submitted_at":"2017-04-01T17:51:39Z","abstract_excerpt":"Ultra-short-period (USP) planets are a newly recognized class of planets with periods shorter than one day and radii smaller than about 2 Earth radii. It has been proposed that USP planets are the solid cores of hot Jupiters that lost their gaseous envelopes due to photo-evaporation or Roche lobe overflow. We test this hypothesis by asking whether USP planets are associated with metal-rich stars, as has long been observed for hot Jupiters. We find the metallicity distributions of USP-planet and hot-Jupiter hosts to be significantly different ($p = 3\\times 10^{-4}$), based on Keck spectroscopy "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00203","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":"2026-05-18T00:39:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OZirdv51g0nt0ZHz+1sAyBmN9YOtmrUIroWW7IuysaFTo78hGrayxWxLtUIpyBmiB7Z9WkYmeoF+WMrp6T0XDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:30:12.955435Z"},"content_sha256":"3335fb7fd38599cda18e2afd313fad7f294f5fe052bbaf5c82870102e29f8c9f","schema_version":"1.0","event_id":"sha256:3335fb7fd38599cda18e2afd313fad7f294f5fe052bbaf5c82870102e29f8c9f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JPD5T7QYOA26MCO7OBMD3SY6P5/bundle.json","state_url":"https://pith.science/pith/JPD5T7QYOA26MCO7OBMD3SY6P5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JPD5T7QYOA26MCO7OBMD3SY6P5/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":"2026-05-30T12:30:12Z","links":{"resolver":"https://pith.science/pith/JPD5T7QYOA26MCO7OBMD3SY6P5","bundle":"https://pith.science/pith/JPD5T7QYOA26MCO7OBMD3SY6P5/bundle.json","state":"https://pith.science/pith/JPD5T7QYOA26MCO7OBMD3SY6P5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JPD5T7QYOA26MCO7OBMD3SY6P5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:JPD5T7QYOA26MCO7OBMD3SY6P5","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":"013b1427768f557801c0ab292986c295fe761ecde7f38f136e26113db74c901b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-01T17:51:39Z","title_canon_sha256":"6ee0a6fff76993270f2aeb2ed548768bc0e9829be419f1b40662b3468fdc4a45"},"schema_version":"1.0","source":{"id":"1704.00203","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00203","created_at":"2026-05-18T00:39:36Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00203v2","created_at":"2026-05-18T00:39:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00203","created_at":"2026-05-18T00:39:36Z"},{"alias_kind":"pith_short_12","alias_value":"JPD5T7QYOA26","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JPD5T7QYOA26MCO7","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JPD5T7QY","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:3335fb7fd38599cda18e2afd313fad7f294f5fe052bbaf5c82870102e29f8c9f","target":"graph","created_at":"2026-05-18T00:39:36Z","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":"Ultra-short-period (USP) planets are a newly recognized class of planets with periods shorter than one day and radii smaller than about 2 Earth radii. It has been proposed that USP planets are the solid cores of hot Jupiters that lost their gaseous envelopes due to photo-evaporation or Roche lobe overflow. We test this hypothesis by asking whether USP planets are associated with metal-rich stars, as has long been observed for hot Jupiters. We find the metallicity distributions of USP-planet and hot-Jupiter hosts to be significantly different ($p = 3\\times 10^{-4}$), based on Keck spectroscopy ","authors_text":"Andrew W. Howard, Erik A. Petigura, Geoffrey W. Marcy, Howard Isaacson, Joshua N. Winn, Kevin Schlaufman, Leslie Hebb, Leslie Rogers, Phillip Cargile, Roberto Sanchis-Ojeda","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-01T17:51:39Z","title":"Absence of a metallicity effect for ultra-short-period planets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00203","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":"sha256:3bab09d51b41addb408f04f95e09c39423f988949bfcedf94aa1d219a42162ad","target":"record","created_at":"2026-05-18T00:39:36Z","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":"013b1427768f557801c0ab292986c295fe761ecde7f38f136e26113db74c901b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-04-01T17:51:39Z","title_canon_sha256":"6ee0a6fff76993270f2aeb2ed548768bc0e9829be419f1b40662b3468fdc4a45"},"schema_version":"1.0","source":{"id":"1704.00203","kind":"arxiv","version":2}},"canonical_sha256":"4bc7d9fe187035e609df70583dcb1e7f51fb0978b9a3a0d3f52f3e9bde582398","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4bc7d9fe187035e609df70583dcb1e7f51fb0978b9a3a0d3f52f3e9bde582398","first_computed_at":"2026-05-18T00:39:36.120801Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:36.120801Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uzgwYE8OYii+OcOkBV2oxjCRqQUFg6Lt5EQNsGLwPyjBy8Lp0OyCqm1sSUMWME+whBIRNZ3/654P8xEz9fmFBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:36.121449Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.00203","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3bab09d51b41addb408f04f95e09c39423f988949bfcedf94aa1d219a42162ad","sha256:3335fb7fd38599cda18e2afd313fad7f294f5fe052bbaf5c82870102e29f8c9f"],"state_sha256":"3c1401f54766de91b78e749aee20e0be0d6a861b0bbb72181e9f61b00b86b904"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pBIKNV8pbNf5xhGAMeBSGSauh50tcpCjyDhKfJvyV0zDtJwP12laB8k8u9z6EBob1GfHjA3iqgpGq3mUtkouAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T12:30:12.960476Z","bundle_sha256":"ea3003d30a835a3ca7895c713fec9574c60821a7d8b34595569910a90fd784c9"}}