{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:3EGRF46GLMIL6BO6MA4QJYHB4G","short_pith_number":"pith:3EGRF46G","canonical_record":{"source":{"id":"2606.28101","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-26T13:59:02Z","cross_cats_sorted":["astro-ph.HE","hep-ex","physics.ins-det"],"title_canon_sha256":"8d573618493d366d453d48f5073f0262444f4622fcfe2ffbefaf78d2860aa28d","abstract_canon_sha256":"4ff88a79867c57059fd1a0f453a34d02d4b21ae492694c64e31f25c59bedecb5"},"schema_version":"1.0"},"canonical_sha256":"d90d12f3c65b10bf05de603904e0e1e196a3fd6ce3337ad0bb973b0d11850607","source":{"kind":"arxiv","id":"2606.28101","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.28101","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"arxiv_version","alias_value":"2606.28101v1","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.28101","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"pith_short_12","alias_value":"3EGRF46GLMIL","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"pith_short_16","alias_value":"3EGRF46GLMIL6BO6","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"pith_short_8","alias_value":"3EGRF46G","created_at":"2026-06-29T01:14:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:3EGRF46GLMIL6BO6MA4QJYHB4G","target":"record","payload":{"canonical_record":{"source":{"id":"2606.28101","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-26T13:59:02Z","cross_cats_sorted":["astro-ph.HE","hep-ex","physics.ins-det"],"title_canon_sha256":"8d573618493d366d453d48f5073f0262444f4622fcfe2ffbefaf78d2860aa28d","abstract_canon_sha256":"4ff88a79867c57059fd1a0f453a34d02d4b21ae492694c64e31f25c59bedecb5"},"schema_version":"1.0"},"canonical_sha256":"d90d12f3c65b10bf05de603904e0e1e196a3fd6ce3337ad0bb973b0d11850607","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-29T01:14:57.947408Z","signature_b64":"XBAYDl2MdIt7h8Bw8eDz76SioUL6bmSXh3+oEa2qV8WqYz2z5hY2awBatDHWw9Z2PqmDi9HbpKZyM5RykYfbBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d90d12f3c65b10bf05de603904e0e1e196a3fd6ce3337ad0bb973b0d11850607","last_reissued_at":"2026-06-29T01:14:57.947013Z","signature_status":"signed_v1","first_computed_at":"2026-06-29T01:14:57.947013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.28101","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":"2026-06-29T01:14:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4yLB4yHPRVGnRqBARXeiRKIHgz8D8xBIf8LURGuhxdOySg6rdmmjqDiouF4jgb4a3SzGfK6g2d48XpAJmZH0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:04:50.587167Z"},"content_sha256":"1d4507ddc3b279d6a2b7b70cc88c6058d6c4052c0b5268a20f9b6f6f340e0ea2","schema_version":"1.0","event_id":"sha256:1d4507ddc3b279d6a2b7b70cc88c6058d6c4052c0b5268a20f9b6f6f340e0ea2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:3EGRF46GLMIL6BO6MA4QJYHB4G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"In-flight calibration of the Wide-field X-ray Telescope on board the Einstein Probe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-ex","physics.ins-det"],"primary_cat":"astro-ph.IM","authors_text":"Chen Zhang, Donghua Zhao, Ge Jin, Hai-Wu Pan, Haonan Yang, He-Yang Liu, Huaqing Cheng, Jingwei Hu, Longhui Li, Shuang-Nan Zhang, Weimin Yuan, Wenxin Wang, Xiaojin Sun, Xue Yang, Yifan Chen, Yuan Liu, Zhixing Ling","submitted_at":"2026-06-26T13:59:02Z","abstract_excerpt":"By utilizing novel lobster-eye optics, the Wide-field X-ray Telescope (WXT) onboard the Einstein Probe (EP) satellite achieves an unprecedented combination of a large instantaneous field-of-view (FoV) and high sensitivity for monitoring the dynamic X-ray sky. In this paper, we present the in-orbit calibration results of the WXT during its first two and a half years of operations. By conducting observations of standard celestial sources--including the Crab Nebula, Scorpius X-1, and Cassiopeia A--we systematically characterized key instrumental properties. Our analysis demonstrates that the in-o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.28101","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/2606.28101/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":"2026-06-29T01:14:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G610f/ryN4VhRfp9zDwj/4LJi5WgaPdrgjzVihTuv7wW0HTAGmal6I1N3ME8vExHn1O+wpNxRCWEvxChyCyCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:04:50.587567Z"},"content_sha256":"980da3408caea574fa5f6df1a1ec0821de8fc5b06c919429dcfaace3cdc89091","schema_version":"1.0","event_id":"sha256:980da3408caea574fa5f6df1a1ec0821de8fc5b06c919429dcfaace3cdc89091"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3EGRF46GLMIL6BO6MA4QJYHB4G/bundle.json","state_url":"https://pith.science/pith/3EGRF46GLMIL6BO6MA4QJYHB4G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3EGRF46GLMIL6BO6MA4QJYHB4G/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":"2026-06-29T13:04:50Z","links":{"resolver":"https://pith.science/pith/3EGRF46GLMIL6BO6MA4QJYHB4G","bundle":"https://pith.science/pith/3EGRF46GLMIL6BO6MA4QJYHB4G/bundle.json","state":"https://pith.science/pith/3EGRF46GLMIL6BO6MA4QJYHB4G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3EGRF46GLMIL6BO6MA4QJYHB4G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:3EGRF46GLMIL6BO6MA4QJYHB4G","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":"4ff88a79867c57059fd1a0f453a34d02d4b21ae492694c64e31f25c59bedecb5","cross_cats_sorted":["astro-ph.HE","hep-ex","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-26T13:59:02Z","title_canon_sha256":"8d573618493d366d453d48f5073f0262444f4622fcfe2ffbefaf78d2860aa28d"},"schema_version":"1.0","source":{"id":"2606.28101","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.28101","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"arxiv_version","alias_value":"2606.28101v1","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.28101","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"pith_short_12","alias_value":"3EGRF46GLMIL","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"pith_short_16","alias_value":"3EGRF46GLMIL6BO6","created_at":"2026-06-29T01:14:57Z"},{"alias_kind":"pith_short_8","alias_value":"3EGRF46G","created_at":"2026-06-29T01:14:57Z"}],"graph_snapshots":[{"event_id":"sha256:980da3408caea574fa5f6df1a1ec0821de8fc5b06c919429dcfaace3cdc89091","target":"graph","created_at":"2026-06-29T01:14:57Z","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/2606.28101/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"By utilizing novel lobster-eye optics, the Wide-field X-ray Telescope (WXT) onboard the Einstein Probe (EP) satellite achieves an unprecedented combination of a large instantaneous field-of-view (FoV) and high sensitivity for monitoring the dynamic X-ray sky. In this paper, we present the in-orbit calibration results of the WXT during its first two and a half years of operations. By conducting observations of standard celestial sources--including the Crab Nebula, Scorpius X-1, and Cassiopeia A--we systematically characterized key instrumental properties. Our analysis demonstrates that the in-o","authors_text":"Chen Zhang, Donghua Zhao, Ge Jin, Hai-Wu Pan, Haonan Yang, He-Yang Liu, Huaqing Cheng, Jingwei Hu, Longhui Li, Shuang-Nan Zhang, Weimin Yuan, Wenxin Wang, Xiaojin Sun, Xue Yang, Yifan Chen, Yuan Liu, Zhixing Ling","cross_cats":["astro-ph.HE","hep-ex","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-26T13:59:02Z","title":"In-flight calibration of the Wide-field X-ray Telescope on board the Einstein Probe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.28101","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":"sha256:1d4507ddc3b279d6a2b7b70cc88c6058d6c4052c0b5268a20f9b6f6f340e0ea2","target":"record","created_at":"2026-06-29T01:14:57Z","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":"4ff88a79867c57059fd1a0f453a34d02d4b21ae492694c64e31f25c59bedecb5","cross_cats_sorted":["astro-ph.HE","hep-ex","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-26T13:59:02Z","title_canon_sha256":"8d573618493d366d453d48f5073f0262444f4622fcfe2ffbefaf78d2860aa28d"},"schema_version":"1.0","source":{"id":"2606.28101","kind":"arxiv","version":1}},"canonical_sha256":"d90d12f3c65b10bf05de603904e0e1e196a3fd6ce3337ad0bb973b0d11850607","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d90d12f3c65b10bf05de603904e0e1e196a3fd6ce3337ad0bb973b0d11850607","first_computed_at":"2026-06-29T01:14:57.947013Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-29T01:14:57.947013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XBAYDl2MdIt7h8Bw8eDz76SioUL6bmSXh3+oEa2qV8WqYz2z5hY2awBatDHWw9Z2PqmDi9HbpKZyM5RykYfbBg==","signature_status":"signed_v1","signed_at":"2026-06-29T01:14:57.947408Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.28101","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d4507ddc3b279d6a2b7b70cc88c6058d6c4052c0b5268a20f9b6f6f340e0ea2","sha256:980da3408caea574fa5f6df1a1ec0821de8fc5b06c919429dcfaace3cdc89091"],"state_sha256":"5b6bd7d5b3bfa268ec849e50a200637e597845276f5927c1f4f402a5be808591"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UKpPFsNPEMXNvFKteI6+o9aY5jSQ7FlO0qQjGuHCrriRZuC1OeQBNpm/UTkdHeDv4IcMLFk7r9yx5xZDZo8qCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T13:04:50.589571Z","bundle_sha256":"df7d214b6f99e79286e51dcf34eda0de1bc9c131d4976982bab5be8e4771eedf"}}