{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:USOQYC774NU6SXVIFAYBHABBNW","short_pith_number":"pith:USOQYC77","canonical_record":{"source":{"id":"1711.01112","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-11-03T11:43:57Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4805b83b1d78c72807d8ce6a49e494974eeeecd3a5c29ff1ae88e5bd622a2b21","abstract_canon_sha256":"329ad3fa1c2dab4054bc9e343a9cc00d32d08181bec7dbb76df8d3a82d1fb965"},"schema_version":"1.0"},"canonical_sha256":"a49d0c0bffe369e95ea828301380216dbe5a6095bc33939590f451ee26b0e57f","source":{"kind":"arxiv","id":"1711.01112","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.01112","created_at":"2026-05-18T00:29:24Z"},{"alias_kind":"arxiv_version","alias_value":"1711.01112v1","created_at":"2026-05-18T00:29:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.01112","created_at":"2026-05-18T00:29:24Z"},{"alias_kind":"pith_short_12","alias_value":"USOQYC774NU6","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"USOQYC774NU6SXVI","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"USOQYC77","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:USOQYC774NU6SXVIFAYBHABBNW","target":"record","payload":{"canonical_record":{"source":{"id":"1711.01112","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-11-03T11:43:57Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4805b83b1d78c72807d8ce6a49e494974eeeecd3a5c29ff1ae88e5bd622a2b21","abstract_canon_sha256":"329ad3fa1c2dab4054bc9e343a9cc00d32d08181bec7dbb76df8d3a82d1fb965"},"schema_version":"1.0"},"canonical_sha256":"a49d0c0bffe369e95ea828301380216dbe5a6095bc33939590f451ee26b0e57f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:24.460618Z","signature_b64":"HP6gTfBx8QHgh/wfcqzcJMAJdzPAVZyhUJw7fHwkHMbCpQXrFJp9GAUHsHqwAgQ56Ho8UvtSdc9yEFb8NA5pCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a49d0c0bffe369e95ea828301380216dbe5a6095bc33939590f451ee26b0e57f","last_reissued_at":"2026-05-18T00:29:24.459926Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:24.459926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.01112","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":"2026-05-18T00:29:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hcdBVR7nHDLCgZdvE0ycubYlCh7YSf0OOuDsVk49i7KDTgX8Ue3+5Qe6/+cRMQc/5CWLYqRYxXwO4l3FdK9+BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:45:19.275580Z"},"content_sha256":"6c83e738d86c6cb6d3d0043f2fc154393959c7bbe94952cbc629401c250b61d9","schema_version":"1.0","event_id":"sha256:6c83e738d86c6cb6d3d0043f2fc154393959c7bbe94952cbc629401c250b61d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:USOQYC774NU6SXVIFAYBHABBNW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterization of Exoplanet-Host Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Nuno C. Santos, S\\'ergio G. Sousa, Vardan Adibekyan","submitted_at":"2017-11-03T11:43:57Z","abstract_excerpt":"Precise and, if possible, accurate characterization of exoplanets cannot be dissociated from the characterization of their host stars. In this chapter we discuss different methods and techniques used to derive fundamental properties and atmospheric parameters of exoplanet-host stars. The main limitations, advantages and disadvantages, as well as corresponding typical measurement uncertainties of each method are presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01112","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":""},"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":"2026-05-18T00:29:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+6CxtIwbAWF+gEPE+HqnG2cEyEV8YCuoGt7lTe/gRCuxXqcZk2Dbu6/gNxswHjAynDXpqtPNTxwuTaenQXdyCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:45:19.275934Z"},"content_sha256":"fa5692e7181a92319d3f9cdde6f25e42a6ef338104e275cbde536cbfdad3fe31","schema_version":"1.0","event_id":"sha256:fa5692e7181a92319d3f9cdde6f25e42a6ef338104e275cbde536cbfdad3fe31"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/USOQYC774NU6SXVIFAYBHABBNW/bundle.json","state_url":"https://pith.science/pith/USOQYC774NU6SXVIFAYBHABBNW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/USOQYC774NU6SXVIFAYBHABBNW/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":"2026-05-28T06:45:19Z","links":{"resolver":"https://pith.science/pith/USOQYC774NU6SXVIFAYBHABBNW","bundle":"https://pith.science/pith/USOQYC774NU6SXVIFAYBHABBNW/bundle.json","state":"https://pith.science/pith/USOQYC774NU6SXVIFAYBHABBNW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/USOQYC774NU6SXVIFAYBHABBNW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:USOQYC774NU6SXVIFAYBHABBNW","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":"329ad3fa1c2dab4054bc9e343a9cc00d32d08181bec7dbb76df8d3a82d1fb965","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-11-03T11:43:57Z","title_canon_sha256":"4805b83b1d78c72807d8ce6a49e494974eeeecd3a5c29ff1ae88e5bd622a2b21"},"schema_version":"1.0","source":{"id":"1711.01112","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.01112","created_at":"2026-05-18T00:29:24Z"},{"alias_kind":"arxiv_version","alias_value":"1711.01112v1","created_at":"2026-05-18T00:29:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.01112","created_at":"2026-05-18T00:29:24Z"},{"alias_kind":"pith_short_12","alias_value":"USOQYC774NU6","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"USOQYC774NU6SXVI","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"USOQYC77","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:fa5692e7181a92319d3f9cdde6f25e42a6ef338104e275cbde536cbfdad3fe31","target":"graph","created_at":"2026-05-18T00:29:24Z","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":"Precise and, if possible, accurate characterization of exoplanets cannot be dissociated from the characterization of their host stars. In this chapter we discuss different methods and techniques used to derive fundamental properties and atmospheric parameters of exoplanet-host stars. The main limitations, advantages and disadvantages, as well as corresponding typical measurement uncertainties of each method are presented.","authors_text":"Nuno C. Santos, S\\'ergio G. Sousa, Vardan Adibekyan","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-11-03T11:43:57Z","title":"Characterization of Exoplanet-Host Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01112","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":"sha256:6c83e738d86c6cb6d3d0043f2fc154393959c7bbe94952cbc629401c250b61d9","target":"record","created_at":"2026-05-18T00:29:24Z","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":"329ad3fa1c2dab4054bc9e343a9cc00d32d08181bec7dbb76df8d3a82d1fb965","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-11-03T11:43:57Z","title_canon_sha256":"4805b83b1d78c72807d8ce6a49e494974eeeecd3a5c29ff1ae88e5bd622a2b21"},"schema_version":"1.0","source":{"id":"1711.01112","kind":"arxiv","version":1}},"canonical_sha256":"a49d0c0bffe369e95ea828301380216dbe5a6095bc33939590f451ee26b0e57f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a49d0c0bffe369e95ea828301380216dbe5a6095bc33939590f451ee26b0e57f","first_computed_at":"2026-05-18T00:29:24.459926Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:29:24.459926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HP6gTfBx8QHgh/wfcqzcJMAJdzPAVZyhUJw7fHwkHMbCpQXrFJp9GAUHsHqwAgQ56Ho8UvtSdc9yEFb8NA5pCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:29:24.460618Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.01112","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c83e738d86c6cb6d3d0043f2fc154393959c7bbe94952cbc629401c250b61d9","sha256:fa5692e7181a92319d3f9cdde6f25e42a6ef338104e275cbde536cbfdad3fe31"],"state_sha256":"54ff7c1773e015e66b3b9af72b7116f0fd3331eec9c56c9c38c75fab90c0cbbd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ucivgmu6fthwiGvDdBBl5GKHMrH8ZOZ98NkQd0EAyEtwogFL82Ll69KWL3Qu8MVuCmj5qfEUVKidMzt2CefSCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T06:45:19.277914Z","bundle_sha256":"8c0a35ac32427b41b7833b6c0aef3a7b074541dcc0b74af1c8f9464ae0489c9c"}}