{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:CX2MUBPAJGKDB67NLOBJP7RSAS","short_pith_number":"pith:CX2MUBPA","canonical_record":{"source":{"id":"astro-ph/0310371","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-14T16:15:42Z","cross_cats_sorted":[],"title_canon_sha256":"37cc914c11d0162b19a2d3336a37b81d88e4b1f65da785f72e73ec1359388b82","abstract_canon_sha256":"9ad6f79423b3d2d84d851e89af146fa3bdc7e621377eec379573bc579c059a2b"},"schema_version":"1.0"},"canonical_sha256":"15f4ca05e0499430fbed5b8297fe32049073013b546b731558a658f7f9e8d270","source":{"kind":"arxiv","id":"astro-ph/0310371","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0310371","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0310371v1","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0310371","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"pith_short_12","alias_value":"CX2MUBPAJGKD","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"pith_short_16","alias_value":"CX2MUBPAJGKDB67N","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"pith_short_8","alias_value":"CX2MUBPA","created_at":"2026-07-04T14:13:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:CX2MUBPAJGKDB67NLOBJP7RSAS","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0310371","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-14T16:15:42Z","cross_cats_sorted":[],"title_canon_sha256":"37cc914c11d0162b19a2d3336a37b81d88e4b1f65da785f72e73ec1359388b82","abstract_canon_sha256":"9ad6f79423b3d2d84d851e89af146fa3bdc7e621377eec379573bc579c059a2b"},"schema_version":"1.0"},"canonical_sha256":"15f4ca05e0499430fbed5b8297fe32049073013b546b731558a658f7f9e8d270","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:13:05.162989Z","signature_b64":"xmdXslJppeJJMK3UjWaIMV7zvyOt62cL+HplUVDFZwOn+LmnKRk3iTXshPJ0mDoCfoi8JZmWDQ95pbBWiXF6Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15f4ca05e0499430fbed5b8297fe32049073013b546b731558a658f7f9e8d270","last_reissued_at":"2026-07-04T14:13:05.162559Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:13:05.162559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0310371","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":"2026-07-04T14:13:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yUUZLfbpuKgKD8Z0NjU/OZumBccNxeCyULybkzqYBvge0HxeS/KpESP9BcUUVqSMvxtnd5xyWcujtTX+PlSrDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:54:45.210821Z"},"content_sha256":"4df41a9c6af54fc6889cff9380834a421222fd02da758c0a0a8c6d369af7a1cf","schema_version":"1.0","event_id":"sha256:4df41a9c6af54fc6889cff9380834a421222fd02da758c0a0a8c6d369af7a1cf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:CX2MUBPAJGKDB67NLOBJP7RSAS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Sample of X-Ray active extragalactic Sources suitable for NIR Adaptive Optics Observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Eckart (Universitaet zu Koeln), C. Straubmeier (Universitaet zu Koeln), Garching), J. Zuther (Universitaet zu Koeln), W. Voges (Max-Planck Institut fuer extraterrestrische Physik","submitted_at":"2003-10-14T16:15:42Z","abstract_excerpt":"Recent X-ray surveys have now resolved most of the X-ray background (XRB) into discrete sources. While this represents a break- through in the understanding of the XRB, the astrophysical nature of these sources still remains mysterious. In this article we present a sample of X-ray/optically selected extragalactic objects which are suitable for adaptive optics observations in the near infrared (NIR) at highest angu- lar resolution. The sample is based on a cross-correlation of the Sloan Digital Sky Survey and the ROSAT All Sky Survey. The NIR properties can help to disentangle the nature of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0310371","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/astro-ph/0310371/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":"2026-07-04T14:13:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Z24fPxfGzCPWduBLcN4PEXSYZJq69hjTdxR6LcOIxeC1k4D1DgoSRGj9fZ3YNrAqTyjahANRZL9onEp6V+vDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:54:45.211218Z"},"content_sha256":"385512febe9da79c0b111f029db7bbd6b704ff18e578335bbeb874a3fc901ed7","schema_version":"1.0","event_id":"sha256:385512febe9da79c0b111f029db7bbd6b704ff18e578335bbeb874a3fc901ed7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CX2MUBPAJGKDB67NLOBJP7RSAS/bundle.json","state_url":"https://pith.science/pith/CX2MUBPAJGKDB67NLOBJP7RSAS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CX2MUBPAJGKDB67NLOBJP7RSAS/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":"2026-08-05T23:54:45Z","links":{"resolver":"https://pith.science/pith/CX2MUBPAJGKDB67NLOBJP7RSAS","bundle":"https://pith.science/pith/CX2MUBPAJGKDB67NLOBJP7RSAS/bundle.json","state":"https://pith.science/pith/CX2MUBPAJGKDB67NLOBJP7RSAS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CX2MUBPAJGKDB67NLOBJP7RSAS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:CX2MUBPAJGKDB67NLOBJP7RSAS","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":"9ad6f79423b3d2d84d851e89af146fa3bdc7e621377eec379573bc579c059a2b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-14T16:15:42Z","title_canon_sha256":"37cc914c11d0162b19a2d3336a37b81d88e4b1f65da785f72e73ec1359388b82"},"schema_version":"1.0","source":{"id":"astro-ph/0310371","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0310371","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0310371v1","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0310371","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"pith_short_12","alias_value":"CX2MUBPAJGKD","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"pith_short_16","alias_value":"CX2MUBPAJGKDB67N","created_at":"2026-07-04T14:13:05Z"},{"alias_kind":"pith_short_8","alias_value":"CX2MUBPA","created_at":"2026-07-04T14:13:05Z"}],"graph_snapshots":[{"event_id":"sha256:385512febe9da79c0b111f029db7bbd6b704ff18e578335bbeb874a3fc901ed7","target":"graph","created_at":"2026-07-04T14:13:05Z","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/astro-ph/0310371/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent X-ray surveys have now resolved most of the X-ray background (XRB) into discrete sources. While this represents a break- through in the understanding of the XRB, the astrophysical nature of these sources still remains mysterious. In this article we present a sample of X-ray/optically selected extragalactic objects which are suitable for adaptive optics observations in the near infrared (NIR) at highest angu- lar resolution. The sample is based on a cross-correlation of the Sloan Digital Sky Survey and the ROSAT All Sky Survey. The NIR properties can help to disentangle the nature of the","authors_text":"A. Eckart (Universitaet zu Koeln), C. Straubmeier (Universitaet zu Koeln), Garching), J. Zuther (Universitaet zu Koeln), W. Voges (Max-Planck Institut fuer extraterrestrische Physik","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-10-14T16:15:42Z","title":"A Sample of X-Ray active extragalactic Sources suitable for NIR Adaptive Optics Observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0310371","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":"sha256:4df41a9c6af54fc6889cff9380834a421222fd02da758c0a0a8c6d369af7a1cf","target":"record","created_at":"2026-07-04T14:13:05Z","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":"9ad6f79423b3d2d84d851e89af146fa3bdc7e621377eec379573bc579c059a2b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-10-14T16:15:42Z","title_canon_sha256":"37cc914c11d0162b19a2d3336a37b81d88e4b1f65da785f72e73ec1359388b82"},"schema_version":"1.0","source":{"id":"astro-ph/0310371","kind":"arxiv","version":1}},"canonical_sha256":"15f4ca05e0499430fbed5b8297fe32049073013b546b731558a658f7f9e8d270","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15f4ca05e0499430fbed5b8297fe32049073013b546b731558a658f7f9e8d270","first_computed_at":"2026-07-04T14:13:05.162559Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:13:05.162559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xmdXslJppeJJMK3UjWaIMV7zvyOt62cL+HplUVDFZwOn+LmnKRk3iTXshPJ0mDoCfoi8JZmWDQ95pbBWiXF6Bw==","signature_status":"signed_v1","signed_at":"2026-07-04T14:13:05.162989Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0310371","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4df41a9c6af54fc6889cff9380834a421222fd02da758c0a0a8c6d369af7a1cf","sha256:385512febe9da79c0b111f029db7bbd6b704ff18e578335bbeb874a3fc901ed7"],"state_sha256":"de66f530d6a37c7979f373d949a711e570c4a02b5d871864d6743c1a1662205c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6YpkGphTUXaOHXQSDA3VQLhb7vacsOaJ9rHwhFs5Ah5mKuzLES/K7CsrNfa1zV5A+hXUIawOTJ6lQcdqTFWbDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T23:54:45.214575Z","bundle_sha256":"2bd8cbd1f67fedaf74074af6d3fe98bbf95f275d729e7eae86ea42e91665a385"}}