{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:TYOCXDEU5O2S6XMYOL7RWTRFFS","short_pith_number":"pith:TYOCXDEU","canonical_record":{"source":{"id":"1912.05889","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-12-12T11:45:11Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"075f02edf5a4d40baaaf1afffdcbf58711490d7078fb2d7faf70cf365021913f","abstract_canon_sha256":"698ebbf78b0f2394b0ff9ee296ca86df37200cf1ec9e8ddffc28e3d2915d54ee"},"schema_version":"1.0"},"canonical_sha256":"9e1c2b8c94ebb52f5d9872ff1b4e252c97791c027c384520e9627bc49fdef9fd","source":{"kind":"arxiv","id":"1912.05889","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.05889","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"arxiv_version","alias_value":"1912.05889v1","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.05889","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"pith_short_12","alias_value":"TYOCXDEU5O2S","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"pith_short_16","alias_value":"TYOCXDEU5O2S6XMY","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"pith_short_8","alias_value":"TYOCXDEU","created_at":"2026-07-05T00:35:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:TYOCXDEU5O2S6XMYOL7RWTRFFS","target":"record","payload":{"canonical_record":{"source":{"id":"1912.05889","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-12-12T11:45:11Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"075f02edf5a4d40baaaf1afffdcbf58711490d7078fb2d7faf70cf365021913f","abstract_canon_sha256":"698ebbf78b0f2394b0ff9ee296ca86df37200cf1ec9e8ddffc28e3d2915d54ee"},"schema_version":"1.0"},"canonical_sha256":"9e1c2b8c94ebb52f5d9872ff1b4e252c97791c027c384520e9627bc49fdef9fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:35:54.045598Z","signature_b64":"CSSMRGRHW9CdxwAVFdCTZJLPTx8IGf7Ng6fAtdlj3ru8bU5bMcf5F7H9OAHjFsINFmYvQeqQjxNcMWWol/s2Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e1c2b8c94ebb52f5d9872ff1b4e252c97791c027c384520e9627bc49fdef9fd","last_reissued_at":"2026-07-05T00:35:54.045039Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:35:54.045039Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.05889","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":"2026-07-05T00:35:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QmdIJTm1mxeWBy0t2AumA7Z4EM1TIBfDD+E+YkeRvL3KJCPiqWptr7B9SYr9wowxu7ZVxb/FEJn1jrbt1NaXBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T20:54:30.083965Z"},"content_sha256":"4f2976ec66db948cf53e1c3746cf37cd1275e914d276f57ce424785dfdf0d7c5","schema_version":"1.0","event_id":"sha256:4f2976ec66db948cf53e1c3746cf37cd1275e914d276f57ce424785dfdf0d7c5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:TYOCXDEU5O2S6XMYOL7RWTRFFS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HST/STIS capability for Love number measurement of WASP-121b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Frank Sohl, Heike Rauer, Hugo Hellard, Sebastiano Padovan, Szil\\'ard Csizmadia","submitted_at":"2019-12-12T11:45:11Z","abstract_excerpt":"Data from transit light curves, radial velocity and transit timing observations can be used to probe the interiors of exoplanets beyond the mean density, by measuring the Love numbers $h_2$ and $k_2$. The first indirect estimate of $k_2$ for an exoplanet from radial velocity and transit timing variations observations has been performed by taking advantage of the years-spanning baseline. Not a single measurement of $h_2$ has been achieved from transit light curves, mostly because the photometric precision of current observing facilities is still too low. We show that the Imaging Spectrograph in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.05889","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/1912.05889/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":"2026-07-05T00:35:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rcOwjjpeANHUcMKKsL/YoPJSiw7293ha0t6rvoyVAY9FH7zCuS6gWNPOHp5szCKecnw7kkvoiSbxXfcm1Y2VBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T20:54:30.084469Z"},"content_sha256":"0080db26c481fed1e6729d1ff67657e4a5bd8bba902e7c6d35d923b38a8d70e4","schema_version":"1.0","event_id":"sha256:0080db26c481fed1e6729d1ff67657e4a5bd8bba902e7c6d35d923b38a8d70e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TYOCXDEU5O2S6XMYOL7RWTRFFS/bundle.json","state_url":"https://pith.science/pith/TYOCXDEU5O2S6XMYOL7RWTRFFS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TYOCXDEU5O2S6XMYOL7RWTRFFS/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":"2026-08-10T20:54:30Z","links":{"resolver":"https://pith.science/pith/TYOCXDEU5O2S6XMYOL7RWTRFFS","bundle":"https://pith.science/pith/TYOCXDEU5O2S6XMYOL7RWTRFFS/bundle.json","state":"https://pith.science/pith/TYOCXDEU5O2S6XMYOL7RWTRFFS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TYOCXDEU5O2S6XMYOL7RWTRFFS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:TYOCXDEU5O2S6XMYOL7RWTRFFS","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":"698ebbf78b0f2394b0ff9ee296ca86df37200cf1ec9e8ddffc28e3d2915d54ee","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-12-12T11:45:11Z","title_canon_sha256":"075f02edf5a4d40baaaf1afffdcbf58711490d7078fb2d7faf70cf365021913f"},"schema_version":"1.0","source":{"id":"1912.05889","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.05889","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"arxiv_version","alias_value":"1912.05889v1","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.05889","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"pith_short_12","alias_value":"TYOCXDEU5O2S","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"pith_short_16","alias_value":"TYOCXDEU5O2S6XMY","created_at":"2026-07-05T00:35:54Z"},{"alias_kind":"pith_short_8","alias_value":"TYOCXDEU","created_at":"2026-07-05T00:35:54Z"}],"graph_snapshots":[{"event_id":"sha256:0080db26c481fed1e6729d1ff67657e4a5bd8bba902e7c6d35d923b38a8d70e4","target":"graph","created_at":"2026-07-05T00:35:54Z","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/1912.05889/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Data from transit light curves, radial velocity and transit timing observations can be used to probe the interiors of exoplanets beyond the mean density, by measuring the Love numbers $h_2$ and $k_2$. The first indirect estimate of $k_2$ for an exoplanet from radial velocity and transit timing variations observations has been performed by taking advantage of the years-spanning baseline. Not a single measurement of $h_2$ has been achieved from transit light curves, mostly because the photometric precision of current observing facilities is still too low. We show that the Imaging Spectrograph in","authors_text":"Frank Sohl, Heike Rauer, Hugo Hellard, Sebastiano Padovan, Szil\\'ard Csizmadia","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-12-12T11:45:11Z","title":"HST/STIS capability for Love number measurement of WASP-121b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.05889","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":"sha256:4f2976ec66db948cf53e1c3746cf37cd1275e914d276f57ce424785dfdf0d7c5","target":"record","created_at":"2026-07-05T00:35:54Z","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":"698ebbf78b0f2394b0ff9ee296ca86df37200cf1ec9e8ddffc28e3d2915d54ee","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-12-12T11:45:11Z","title_canon_sha256":"075f02edf5a4d40baaaf1afffdcbf58711490d7078fb2d7faf70cf365021913f"},"schema_version":"1.0","source":{"id":"1912.05889","kind":"arxiv","version":1}},"canonical_sha256":"9e1c2b8c94ebb52f5d9872ff1b4e252c97791c027c384520e9627bc49fdef9fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e1c2b8c94ebb52f5d9872ff1b4e252c97791c027c384520e9627bc49fdef9fd","first_computed_at":"2026-07-05T00:35:54.045039Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:35:54.045039Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CSSMRGRHW9CdxwAVFdCTZJLPTx8IGf7Ng6fAtdlj3ru8bU5bMcf5F7H9OAHjFsINFmYvQeqQjxNcMWWol/s2Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T00:35:54.045598Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.05889","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f2976ec66db948cf53e1c3746cf37cd1275e914d276f57ce424785dfdf0d7c5","sha256:0080db26c481fed1e6729d1ff67657e4a5bd8bba902e7c6d35d923b38a8d70e4"],"state_sha256":"9ed58949a27e1f812a6ab6dd42b43b512cf1746b08fa66474f67ef9bcbff2d5d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WAaqI8/3KOD7eCf2iIOgqCeVnai0OuJ5Ott1QEjhkbw4QusXG1kWawSWzmM4J0+1Ss01tYvILkWJOUecQ7/jDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T20:54:30.088772Z","bundle_sha256":"cb6ab07d33763ed2d2752a2b3672c0024fb033a1fa1f084c7cd184caf5c95141"}}