{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:2DUFMVGS2BA6EMOUJYIJ5VOJJY","short_pith_number":"pith:2DUFMVGS","canonical_record":{"source":{"id":"2606.18464","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-16T20:16:16Z","cross_cats_sorted":["astro-ph.EP","cs.LG"],"title_canon_sha256":"45378f8b8d59d499794a3cc7db88ba7cc26cd093995541ab9b6a58c5f71df67e","abstract_canon_sha256":"a4db7114039036898a355cf12de63c88359de2a2f5dda2ff93afbaafb7ed9777"},"schema_version":"1.0"},"canonical_sha256":"d0e85654d2d041e231d44e109ed5c94e0ff4635550ce528bf8b85dc8aa128187","source":{"kind":"arxiv","id":"2606.18464","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18464","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18464v1","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18464","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"pith_short_12","alias_value":"2DUFMVGS2BA6","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"pith_short_16","alias_value":"2DUFMVGS2BA6EMOU","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"pith_short_8","alias_value":"2DUFMVGS","created_at":"2026-06-19T16:11:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:2DUFMVGS2BA6EMOUJYIJ5VOJJY","target":"record","payload":{"canonical_record":{"source":{"id":"2606.18464","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-16T20:16:16Z","cross_cats_sorted":["astro-ph.EP","cs.LG"],"title_canon_sha256":"45378f8b8d59d499794a3cc7db88ba7cc26cd093995541ab9b6a58c5f71df67e","abstract_canon_sha256":"a4db7114039036898a355cf12de63c88359de2a2f5dda2ff93afbaafb7ed9777"},"schema_version":"1.0"},"canonical_sha256":"d0e85654d2d041e231d44e109ed5c94e0ff4635550ce528bf8b85dc8aa128187","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:11:01.857224Z","signature_b64":"73f3Sjft0cCiMGZskWxGe+3oe54rp4+Cyd6fQQBj01w9DMQqtYFBsIEMYznh3vzIaHy4bMhvM7NeaPuGVLTbCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0e85654d2d041e231d44e109ed5c94e0ff4635550ce528bf8b85dc8aa128187","last_reissued_at":"2026-06-19T16:11:01.856775Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:11:01.856775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.18464","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":"2026-06-19T16:11:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1dOmpc1G/5m79SsIX3ybpwgQaKgBaqJ4OwybpoyT4QTJXLjQeA6t2aKrZ/UM9LQeuM5MGaW43BP6gwWrGRQKCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T06:58:23.881827Z"},"content_sha256":"22180e73578566f5a5a1a675185a149eb30c828c4aec0a95a4c682bd5cd81964","schema_version":"1.0","event_id":"sha256:22180e73578566f5a5a1a675185a149eb30c828c4aec0a95a4c682bd5cd81964"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:2DUFMVGS2BA6EMOUJYIJ5VOJJY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling Doppler Shifts in Radial-Velocity Data with Deep Learning toward Earth-mass Exoplanet Detection","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP","cs.LG"],"primary_cat":"astro-ph.IM","authors_text":"Isidro G\\'omez-Vargas, Khaled Al Moulla, Michael Cretignier, Xavier Dumusque, Yinan Zhao","submitted_at":"2026-06-16T20:16:16Z","abstract_excerpt":"Detecting the tiny Doppler shifts induced by Earth-mass planets in stellar radial-velocity measurements remains extremely challenging due to stellar activity. Many deep-learning methods performing well on simulated data remain difficult to apply reliably on real stellar spectra.\n  The aim of this work is to develop a deep-learning framework that generalizes to real, unseen spectra and improves the detectability of Earth-mass planets in radial-velocity data. We train artificial neural networks on HARPS-N solar spectra with injected planetary signals, using physics-motivated spectral representat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18464","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/2606.18464/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":"2026-06-19T16:11:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p3SPZ2Z5OuzmGyAIIxM5UOFy0a1F5put9j4LaM2HD852ht2zyH2WFTnx+HRgAq3ZSnSensfjdx8JYzIxiqxjBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T06:58:23.882192Z"},"content_sha256":"12f9610ea8ed3f320005fab65ffa16b1d01b299b39f24719ad9397637a649445","schema_version":"1.0","event_id":"sha256:12f9610ea8ed3f320005fab65ffa16b1d01b299b39f24719ad9397637a649445"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2DUFMVGS2BA6EMOUJYIJ5VOJJY/bundle.json","state_url":"https://pith.science/pith/2DUFMVGS2BA6EMOUJYIJ5VOJJY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2DUFMVGS2BA6EMOUJYIJ5VOJJY/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":"2026-06-27T06:58:23Z","links":{"resolver":"https://pith.science/pith/2DUFMVGS2BA6EMOUJYIJ5VOJJY","bundle":"https://pith.science/pith/2DUFMVGS2BA6EMOUJYIJ5VOJJY/bundle.json","state":"https://pith.science/pith/2DUFMVGS2BA6EMOUJYIJ5VOJJY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2DUFMVGS2BA6EMOUJYIJ5VOJJY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:2DUFMVGS2BA6EMOUJYIJ5VOJJY","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":"a4db7114039036898a355cf12de63c88359de2a2f5dda2ff93afbaafb7ed9777","cross_cats_sorted":["astro-ph.EP","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-16T20:16:16Z","title_canon_sha256":"45378f8b8d59d499794a3cc7db88ba7cc26cd093995541ab9b6a58c5f71df67e"},"schema_version":"1.0","source":{"id":"2606.18464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18464","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18464v1","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18464","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"pith_short_12","alias_value":"2DUFMVGS2BA6","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"pith_short_16","alias_value":"2DUFMVGS2BA6EMOU","created_at":"2026-06-19T16:11:01Z"},{"alias_kind":"pith_short_8","alias_value":"2DUFMVGS","created_at":"2026-06-19T16:11:01Z"}],"graph_snapshots":[{"event_id":"sha256:12f9610ea8ed3f320005fab65ffa16b1d01b299b39f24719ad9397637a649445","target":"graph","created_at":"2026-06-19T16:11:01Z","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/2606.18464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Detecting the tiny Doppler shifts induced by Earth-mass planets in stellar radial-velocity measurements remains extremely challenging due to stellar activity. Many deep-learning methods performing well on simulated data remain difficult to apply reliably on real stellar spectra.\n  The aim of this work is to develop a deep-learning framework that generalizes to real, unseen spectra and improves the detectability of Earth-mass planets in radial-velocity data. We train artificial neural networks on HARPS-N solar spectra with injected planetary signals, using physics-motivated spectral representat","authors_text":"Isidro G\\'omez-Vargas, Khaled Al Moulla, Michael Cretignier, Xavier Dumusque, Yinan Zhao","cross_cats":["astro-ph.EP","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-16T20:16:16Z","title":"Modeling Doppler Shifts in Radial-Velocity Data with Deep Learning toward Earth-mass Exoplanet Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18464","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":"sha256:22180e73578566f5a5a1a675185a149eb30c828c4aec0a95a4c682bd5cd81964","target":"record","created_at":"2026-06-19T16:11:01Z","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":"a4db7114039036898a355cf12de63c88359de2a2f5dda2ff93afbaafb7ed9777","cross_cats_sorted":["astro-ph.EP","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-16T20:16:16Z","title_canon_sha256":"45378f8b8d59d499794a3cc7db88ba7cc26cd093995541ab9b6a58c5f71df67e"},"schema_version":"1.0","source":{"id":"2606.18464","kind":"arxiv","version":1}},"canonical_sha256":"d0e85654d2d041e231d44e109ed5c94e0ff4635550ce528bf8b85dc8aa128187","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0e85654d2d041e231d44e109ed5c94e0ff4635550ce528bf8b85dc8aa128187","first_computed_at":"2026-06-19T16:11:01.856775Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:11:01.856775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"73f3Sjft0cCiMGZskWxGe+3oe54rp4+Cyd6fQQBj01w9DMQqtYFBsIEMYznh3vzIaHy4bMhvM7NeaPuGVLTbCw==","signature_status":"signed_v1","signed_at":"2026-06-19T16:11:01.857224Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.18464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22180e73578566f5a5a1a675185a149eb30c828c4aec0a95a4c682bd5cd81964","sha256:12f9610ea8ed3f320005fab65ffa16b1d01b299b39f24719ad9397637a649445"],"state_sha256":"6a12906d6a3c9f05bfdbe22d99d351a1fd65a9600f9c3b83388141957409adf7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BkUaN0xIPXFAMhx65tEG2e9B86qJLzKRE1TftTbk0EDkPb6FdrMpxPAL85FhjDHOcznPLy/OjcWL/rwW04y7BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T06:58:23.884212Z","bundle_sha256":"239b54fbf287de1a8b2249637c86835da2eebad83266dea656edc274df0d6d4d"}}