{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:7ZRS4MXZQD2IYYRQ54V5MNB7P3","short_pith_number":"pith:7ZRS4MXZ","canonical_record":{"source":{"id":"2505.18939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-05-25T02:18:16Z","cross_cats_sorted":["astro-ph.HE","hep-ex","physics.ins-det"],"title_canon_sha256":"8d2fa424c36de181b46b65a39deeb18bd2ecee9dc3874cee0e7ae074c46f81e0","abstract_canon_sha256":"02e8ef48b0ad596353a9988198942f8c64934e970951cc8a1d4c36d2c1a56538"},"schema_version":"1.0"},"canonical_sha256":"fe632e32f980f48c6230ef2bd6343f7ee3cf6eda5b24e9a06a42c51a33b699f5","source":{"kind":"arxiv","id":"2505.18939","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.18939","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"arxiv_version","alias_value":"2505.18939v1","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.18939","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"pith_short_12","alias_value":"7ZRS4MXZQD2I","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"pith_short_16","alias_value":"7ZRS4MXZQD2IYYRQ","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"pith_short_8","alias_value":"7ZRS4MXZ","created_at":"2026-07-05T11:09:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:7ZRS4MXZQD2IYYRQ54V5MNB7P3","target":"record","payload":{"canonical_record":{"source":{"id":"2505.18939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-05-25T02:18:16Z","cross_cats_sorted":["astro-ph.HE","hep-ex","physics.ins-det"],"title_canon_sha256":"8d2fa424c36de181b46b65a39deeb18bd2ecee9dc3874cee0e7ae074c46f81e0","abstract_canon_sha256":"02e8ef48b0ad596353a9988198942f8c64934e970951cc8a1d4c36d2c1a56538"},"schema_version":"1.0"},"canonical_sha256":"fe632e32f980f48c6230ef2bd6343f7ee3cf6eda5b24e9a06a42c51a33b699f5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:09:22.384423Z","signature_b64":"QLQOQS8R2zTrYKihWvz25VuP1FLpPuE21LMWJx5EOo8d9i7J3WpS+ctkMspDSpaZP6IAKJXmA36W9u4Bd6S3CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe632e32f980f48c6230ef2bd6343f7ee3cf6eda5b24e9a06a42c51a33b699f5","last_reissued_at":"2026-07-05T11:09:22.383917Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:09:22.383917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.18939","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":"2026-07-05T11:09:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ig3xqfp9lTLUBsdQcJT0avnb0kFATM06A6dVF5Fxd9Twhhl5TdKC90XyFHH5zXhSdrlQZgHxC/yvk+Wy5tiSDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:49:46.134092Z"},"content_sha256":"6bd3854754cd957e6c43f78755e40f8675e62d877cde9030a83111253e5ecd0f","schema_version":"1.0","event_id":"sha256:6bd3854754cd957e6c43f78755e40f8675e62d877cde9030a83111253e5ecd0f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:7ZRS4MXZQD2IYYRQ54V5MNB7P3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ground Calibration Result of the Wide-field X-ray Telescope (WXT) onboard 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":"Ailiang Yan, Chen Zhang, Donghua Zhao, Ge Jin, Haiwu Pan, Huaqing Cheng, Junfei Li, Longhui Li, Qiang Zhang, Shengli Sun, Wei Fu, Weimin Yuan, Wenxin Wang, Xiaohao Ma, Xiaojin Sun, Xiongtao Yang, Yanfeng Dai, Yifan Chen, Yixiao Han, Yuan Liu, Yulong Xue, Yusa Wang, Zhengda Li, Zhenqing Jia, Zhiwei Cheng, Zhixing Ling, Zijian Zhao","submitted_at":"2025-05-25T02:18:16Z","abstract_excerpt":"We report on results of the on-ground X-ray calibration of the Wide-field X-ray Telescope (WXT) built from novel lobster-eye micro-pore optics, onboard the Einstein Probe (EP) satellite. To fully characterize the instrumental performance and properties, a series of tests and calibrations have been carried out at different levels of devices, assemblies and the complete module before the launch of EP. In this paper, we present the calibration results of three flight model modules (FM1, FM5 and FM11) obtained during their end-to-end module calibration experiments carried out at the 100-m X-ray Te"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.18939","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/2505.18939/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":"2026-07-05T11:09:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mEt8/aX04WFvO09vqRPLkAzadEvlSK7iD0rJySlwge3nEWAzeaoemQFCJxVgsDqZwC01DrXb7uSSXHV119MqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T05:49:46.134500Z"},"content_sha256":"382df8f1a7359e5f38dc7a0414721e648344b585eb29d705361cc77c14a89364","schema_version":"1.0","event_id":"sha256:382df8f1a7359e5f38dc7a0414721e648344b585eb29d705361cc77c14a89364"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7ZRS4MXZQD2IYYRQ54V5MNB7P3/bundle.json","state_url":"https://pith.science/pith/7ZRS4MXZQD2IYYRQ54V5MNB7P3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7ZRS4MXZQD2IYYRQ54V5MNB7P3/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":"2026-07-07T05:49:46Z","links":{"resolver":"https://pith.science/pith/7ZRS4MXZQD2IYYRQ54V5MNB7P3","bundle":"https://pith.science/pith/7ZRS4MXZQD2IYYRQ54V5MNB7P3/bundle.json","state":"https://pith.science/pith/7ZRS4MXZQD2IYYRQ54V5MNB7P3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7ZRS4MXZQD2IYYRQ54V5MNB7P3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:7ZRS4MXZQD2IYYRQ54V5MNB7P3","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":"02e8ef48b0ad596353a9988198942f8c64934e970951cc8a1d4c36d2c1a56538","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":"2025-05-25T02:18:16Z","title_canon_sha256":"8d2fa424c36de181b46b65a39deeb18bd2ecee9dc3874cee0e7ae074c46f81e0"},"schema_version":"1.0","source":{"id":"2505.18939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.18939","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"arxiv_version","alias_value":"2505.18939v1","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.18939","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"pith_short_12","alias_value":"7ZRS4MXZQD2I","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"pith_short_16","alias_value":"7ZRS4MXZQD2IYYRQ","created_at":"2026-07-05T11:09:22Z"},{"alias_kind":"pith_short_8","alias_value":"7ZRS4MXZ","created_at":"2026-07-05T11:09:22Z"}],"graph_snapshots":[{"event_id":"sha256:382df8f1a7359e5f38dc7a0414721e648344b585eb29d705361cc77c14a89364","target":"graph","created_at":"2026-07-05T11:09:22Z","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/2505.18939/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on results of the on-ground X-ray calibration of the Wide-field X-ray Telescope (WXT) built from novel lobster-eye micro-pore optics, onboard the Einstein Probe (EP) satellite. To fully characterize the instrumental performance and properties, a series of tests and calibrations have been carried out at different levels of devices, assemblies and the complete module before the launch of EP. In this paper, we present the calibration results of three flight model modules (FM1, FM5 and FM11) obtained during their end-to-end module calibration experiments carried out at the 100-m X-ray Te","authors_text":"Ailiang Yan, Chen Zhang, Donghua Zhao, Ge Jin, Haiwu Pan, Huaqing Cheng, Junfei Li, Longhui Li, Qiang Zhang, Shengli Sun, Wei Fu, Weimin Yuan, Wenxin Wang, Xiaohao Ma, Xiaojin Sun, Xiongtao Yang, Yanfeng Dai, Yifan Chen, Yixiao Han, Yuan Liu, Yulong Xue, Yusa Wang, Zhengda Li, Zhenqing Jia, Zhiwei Cheng, Zhixing Ling, Zijian Zhao","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":"2025-05-25T02:18:16Z","title":"Ground Calibration Result of the Wide-field X-ray Telescope (WXT) onboard the Einstein Probe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.18939","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":"sha256:6bd3854754cd957e6c43f78755e40f8675e62d877cde9030a83111253e5ecd0f","target":"record","created_at":"2026-07-05T11:09:22Z","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":"02e8ef48b0ad596353a9988198942f8c64934e970951cc8a1d4c36d2c1a56538","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":"2025-05-25T02:18:16Z","title_canon_sha256":"8d2fa424c36de181b46b65a39deeb18bd2ecee9dc3874cee0e7ae074c46f81e0"},"schema_version":"1.0","source":{"id":"2505.18939","kind":"arxiv","version":1}},"canonical_sha256":"fe632e32f980f48c6230ef2bd6343f7ee3cf6eda5b24e9a06a42c51a33b699f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe632e32f980f48c6230ef2bd6343f7ee3cf6eda5b24e9a06a42c51a33b699f5","first_computed_at":"2026-07-05T11:09:22.383917Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:09:22.383917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QLQOQS8R2zTrYKihWvz25VuP1FLpPuE21LMWJx5EOo8d9i7J3WpS+ctkMspDSpaZP6IAKJXmA36W9u4Bd6S3CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:09:22.384423Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.18939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6bd3854754cd957e6c43f78755e40f8675e62d877cde9030a83111253e5ecd0f","sha256:382df8f1a7359e5f38dc7a0414721e648344b585eb29d705361cc77c14a89364"],"state_sha256":"110754fbb874546756655a42447bab5fd705f048b82caa743c8b0ddbbb4f3271"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+mDWBisJKCngLr9DhU6fBWoTW+yhp3DuJpo+uPb5KPL2IpVL4OHP+NY2jQOtGmq0jPd6RIK2OZRpW3aRybc2CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T05:49:46.136852Z","bundle_sha256":"c7ca88303711cc49e70a1606e2b6fad5f99e17f02cf2b102e3cc0b7905fd4063"}}