{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PNKC7UWBR6SVUCORAYFVYJC7NI","short_pith_number":"pith:PNKC7UWB","canonical_record":{"source":{"id":"1111.0009","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-31T20:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"4bb2d0c24ca816b9e771f4441eade081ee6c2a329ae0d68d5d8bd322550223da","abstract_canon_sha256":"7e289dacabefc5314d611038e650c9e482571c765ccd213c957321583b4d0606"},"schema_version":"1.0"},"canonical_sha256":"7b542fd2c18fa55a09d1060b5c245f6a0f85353586b58d58870d518cad8c364f","source":{"kind":"arxiv","id":"1111.0009","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.0009","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"arxiv_version","alias_value":"1111.0009v1","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.0009","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"pith_short_12","alias_value":"PNKC7UWBR6SV","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PNKC7UWBR6SVUCOR","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PNKC7UWB","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PNKC7UWBR6SVUCORAYFVYJC7NI","target":"record","payload":{"canonical_record":{"source":{"id":"1111.0009","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-31T20:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"4bb2d0c24ca816b9e771f4441eade081ee6c2a329ae0d68d5d8bd322550223da","abstract_canon_sha256":"7e289dacabefc5314d611038e650c9e482571c765ccd213c957321583b4d0606"},"schema_version":"1.0"},"canonical_sha256":"7b542fd2c18fa55a09d1060b5c245f6a0f85353586b58d58870d518cad8c364f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:01.628952Z","signature_b64":"wQojHXM+HSxnjOFAC5L9eZkEw8fyx8c6SVO4Zr3pJPunnMEDi7+pLI5k+ihqarsgzLJEAAPTvm0848iUex+SBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b542fd2c18fa55a09d1060b5c245f6a0f85353586b58d58870d518cad8c364f","last_reissued_at":"2026-05-18T03:55:01.628274Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:01.628274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1111.0009","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":"2026-05-18T03:55:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MbNiW9lIA479mwvaumnuE9+8S5LMom5/aKpvvRJIvYSDfYNfAhYjOkKAfC3Et7ctWGQtmovg2WwCXJU95DASBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:29:41.156708Z"},"content_sha256":"768a84cec4ef3a1c61fee88c931c98c4699b5c3fb516673b6c013f01cb123f97","schema_version":"1.0","event_id":"sha256:768a84cec4ef3a1c61fee88c931c98c4699b5c3fb516673b6c013f01cb123f97"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PNKC7UWBR6SVUCORAYFVYJC7NI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The X-ray luminous galaxy cluster population at 0.9<z<~1.6 as revealed by the XMM-Newton Distant Cluster Project","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. de Hoon, A.D. Schwope, A. Nastasi, D. Pierini, G. Lamer, G.W. Pratt, H. Boehringer, H. Quintana, J.J. Mohr, J. Kohnert, J.S. Santos, M. Muehlegger, P. Rosati, R. Fassbender, R. Suhada","submitted_at":"2011-10-31T20:00:02Z","abstract_excerpt":"We present the largest sample of spectroscopically confirmed X-ray luminous high-redshift galaxy clusters to date comprising 22 systems in the range 0.9<z<\\sim1.6 as part of the XMM-Newton Distant Cluster Project (XDCP). All systems were initially selected as extended X-ray sources over 76.1 deg^2 of non-contiguous deep archival XMM-Newton coverage. We test and calibrate the most promising two-band redshift estimation techniques based on the R-z and z-H colors for efficient distant cluster identifications and find a good redshift accuracy performance of the z-H color out to at least z\\sim1.5, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.0009","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":"2026-05-18T03:55:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rJ2KILHV923OpXRasYp878J/rqBQgFXcgfS8SAFceuVNFTr/02xoYtqjoHBlmknrxCiKh0b1q6CzmrMYO+EXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:29:41.157045Z"},"content_sha256":"d714a2837fde91217cff3aa8a0a5019e772aa729f68a790633da6fbb9f95eebf","schema_version":"1.0","event_id":"sha256:d714a2837fde91217cff3aa8a0a5019e772aa729f68a790633da6fbb9f95eebf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PNKC7UWBR6SVUCORAYFVYJC7NI/bundle.json","state_url":"https://pith.science/pith/PNKC7UWBR6SVUCORAYFVYJC7NI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PNKC7UWBR6SVUCORAYFVYJC7NI/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":"2026-06-19T22:29:41Z","links":{"resolver":"https://pith.science/pith/PNKC7UWBR6SVUCORAYFVYJC7NI","bundle":"https://pith.science/pith/PNKC7UWBR6SVUCORAYFVYJC7NI/bundle.json","state":"https://pith.science/pith/PNKC7UWBR6SVUCORAYFVYJC7NI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PNKC7UWBR6SVUCORAYFVYJC7NI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PNKC7UWBR6SVUCORAYFVYJC7NI","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":"7e289dacabefc5314d611038e650c9e482571c765ccd213c957321583b4d0606","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-31T20:00:02Z","title_canon_sha256":"4bb2d0c24ca816b9e771f4441eade081ee6c2a329ae0d68d5d8bd322550223da"},"schema_version":"1.0","source":{"id":"1111.0009","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.0009","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"arxiv_version","alias_value":"1111.0009v1","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.0009","created_at":"2026-05-18T03:55:01Z"},{"alias_kind":"pith_short_12","alias_value":"PNKC7UWBR6SV","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PNKC7UWBR6SVUCOR","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PNKC7UWB","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:d714a2837fde91217cff3aa8a0a5019e772aa729f68a790633da6fbb9f95eebf","target":"graph","created_at":"2026-05-18T03:55:01Z","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"},"paper":{"abstract_excerpt":"We present the largest sample of spectroscopically confirmed X-ray luminous high-redshift galaxy clusters to date comprising 22 systems in the range 0.9<z<\\sim1.6 as part of the XMM-Newton Distant Cluster Project (XDCP). All systems were initially selected as extended X-ray sources over 76.1 deg^2 of non-contiguous deep archival XMM-Newton coverage. We test and calibrate the most promising two-band redshift estimation techniques based on the R-z and z-H colors for efficient distant cluster identifications and find a good redshift accuracy performance of the z-H color out to at least z\\sim1.5, ","authors_text":"A. de Hoon, A.D. Schwope, A. Nastasi, D. Pierini, G. Lamer, G.W. Pratt, H. Boehringer, H. Quintana, J.J. Mohr, J. Kohnert, J.S. Santos, M. Muehlegger, P. Rosati, R. Fassbender, R. Suhada","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-31T20:00:02Z","title":"The X-ray luminous galaxy cluster population at 0.9<z<~1.6 as revealed by the XMM-Newton Distant Cluster Project"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.0009","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":"sha256:768a84cec4ef3a1c61fee88c931c98c4699b5c3fb516673b6c013f01cb123f97","target":"record","created_at":"2026-05-18T03:55:01Z","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":"7e289dacabefc5314d611038e650c9e482571c765ccd213c957321583b4d0606","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-10-31T20:00:02Z","title_canon_sha256":"4bb2d0c24ca816b9e771f4441eade081ee6c2a329ae0d68d5d8bd322550223da"},"schema_version":"1.0","source":{"id":"1111.0009","kind":"arxiv","version":1}},"canonical_sha256":"7b542fd2c18fa55a09d1060b5c245f6a0f85353586b58d58870d518cad8c364f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b542fd2c18fa55a09d1060b5c245f6a0f85353586b58d58870d518cad8c364f","first_computed_at":"2026-05-18T03:55:01.628274Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:01.628274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wQojHXM+HSxnjOFAC5L9eZkEw8fyx8c6SVO4Zr3pJPunnMEDi7+pLI5k+ihqarsgzLJEAAPTvm0848iUex+SBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:01.628952Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.0009","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:768a84cec4ef3a1c61fee88c931c98c4699b5c3fb516673b6c013f01cb123f97","sha256:d714a2837fde91217cff3aa8a0a5019e772aa729f68a790633da6fbb9f95eebf"],"state_sha256":"4ac38da01961a0458cb3efc6e4b5b52621374ca5417c05c3b89a78bb4765e104"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xWz0A6f4+MQCTATtKQCFPBBeJt77Be+4ty3fBlAxgW8P2DzYlcuicGVJ0k7BFE7xPXgj6F1YnZS5SnVMgDFFDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-19T22:29:41.158942Z","bundle_sha256":"54c2690af44b8eb308cfdeb0caf61c060588e85b296e0c6f8bee20b7d217608c"}}