{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SNJGW2BAU5U75B7ZA76BNKM6MV","short_pith_number":"pith:SNJGW2BA","canonical_record":{"source":{"id":"1708.07557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-23T00:42:43Z","cross_cats_sorted":[],"title_canon_sha256":"69f59e21a9837d66d8739ca7ed29685c9cca6c26dc618e0fb0469bb7cbb0915c","abstract_canon_sha256":"91cf809ae0caa4d4380dddf02f765f0af1e331bb251cd87a157b4c948ed096b7"},"schema_version":"1.0"},"canonical_sha256":"93526b6820a769fe87f907fc16a99e656fe0113c55c2b10f9d74e4fa6af53f75","source":{"kind":"arxiv","id":"1708.07557","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07557","created_at":"2026-05-18T00:17:30Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07557v1","created_at":"2026-05-18T00:17:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07557","created_at":"2026-05-18T00:17:30Z"},{"alias_kind":"pith_short_12","alias_value":"SNJGW2BAU5U7","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SNJGW2BAU5U75B7Z","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SNJGW2BA","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SNJGW2BAU5U75B7ZA76BNKM6MV","target":"record","payload":{"canonical_record":{"source":{"id":"1708.07557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-23T00:42:43Z","cross_cats_sorted":[],"title_canon_sha256":"69f59e21a9837d66d8739ca7ed29685c9cca6c26dc618e0fb0469bb7cbb0915c","abstract_canon_sha256":"91cf809ae0caa4d4380dddf02f765f0af1e331bb251cd87a157b4c948ed096b7"},"schema_version":"1.0"},"canonical_sha256":"93526b6820a769fe87f907fc16a99e656fe0113c55c2b10f9d74e4fa6af53f75","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:30.642692Z","signature_b64":"TcGD2J7WmaD+Ez2dBTqCKOBS4RRKF93Fr9v8UaXn41tzVkxAPajuAj2bOAmfXq/UpO+DZGHADZC9mksM+Nb8Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93526b6820a769fe87f907fc16a99e656fe0113c55c2b10f9d74e4fa6af53f75","last_reissued_at":"2026-05-18T00:17:30.642022Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:30.642022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.07557","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":"2026-05-18T00:17:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YLH1J+8zqG673UsJExW1c6jh+bkgFI1one5GdX1eJ980TEzEr/SC3Isf9fsCEvnKvx9+FUGzkRqQgi6LyuzvCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:54:16.252122Z"},"content_sha256":"033bbee9b564fff9e9ba40df700dfccdaedb7c1c4972e26b5b6e3d1e41cd015d","schema_version":"1.0","event_id":"sha256:033bbee9b564fff9e9ba40df700dfccdaedb7c1c4972e26b5b6e3d1e41cd015d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SNJGW2BAU5U75B7ZA76BNKM6MV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nondestructive testing of grating imperfections using grating-based X-ray phase-contrast imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Can Zhang, Shenghao Wang","submitted_at":"2017-08-23T00:42:43Z","abstract_excerpt":"We reported the usage of grating-based X-ray phase-contrast imaging in nondestructive testing of grating imperfections. It was found that electroplating flaws could be easily detected by conventional absorption signal, and in particular, we observed that the grating defects resulting from uneven ultraviolet exposure could be clearly discriminated with phase-contrast signal. The experimental results demonstrate that grating-based X-ray phase-contrast imaging, with a conventional low-brilliance X-ray source, a large field of view and a reasonable compact setup, which simultaneously yields phase-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07557","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":"2026-05-18T00:17:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bXyqLn6AqXpwrgXT1Ix4iqrtW3M1amMDSf9S+SOtb3k05vQgrxhfn8aECDdoeW3MLFjI08EdcPRcsjCZfm8aAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:54:16.252478Z"},"content_sha256":"a2553d4c7977850f77b1be8513a86ee3f80d7245973947286aba010053c35f2b","schema_version":"1.0","event_id":"sha256:a2553d4c7977850f77b1be8513a86ee3f80d7245973947286aba010053c35f2b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SNJGW2BAU5U75B7ZA76BNKM6MV/bundle.json","state_url":"https://pith.science/pith/SNJGW2BAU5U75B7ZA76BNKM6MV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SNJGW2BAU5U75B7ZA76BNKM6MV/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":"2026-06-03T17:54:16Z","links":{"resolver":"https://pith.science/pith/SNJGW2BAU5U75B7ZA76BNKM6MV","bundle":"https://pith.science/pith/SNJGW2BAU5U75B7ZA76BNKM6MV/bundle.json","state":"https://pith.science/pith/SNJGW2BAU5U75B7ZA76BNKM6MV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SNJGW2BAU5U75B7ZA76BNKM6MV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SNJGW2BAU5U75B7ZA76BNKM6MV","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":"91cf809ae0caa4d4380dddf02f765f0af1e331bb251cd87a157b4c948ed096b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-23T00:42:43Z","title_canon_sha256":"69f59e21a9837d66d8739ca7ed29685c9cca6c26dc618e0fb0469bb7cbb0915c"},"schema_version":"1.0","source":{"id":"1708.07557","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07557","created_at":"2026-05-18T00:17:30Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07557v1","created_at":"2026-05-18T00:17:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07557","created_at":"2026-05-18T00:17:30Z"},{"alias_kind":"pith_short_12","alias_value":"SNJGW2BAU5U7","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SNJGW2BAU5U75B7Z","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SNJGW2BA","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:a2553d4c7977850f77b1be8513a86ee3f80d7245973947286aba010053c35f2b","target":"graph","created_at":"2026-05-18T00:17:30Z","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 reported the usage of grating-based X-ray phase-contrast imaging in nondestructive testing of grating imperfections. It was found that electroplating flaws could be easily detected by conventional absorption signal, and in particular, we observed that the grating defects resulting from uneven ultraviolet exposure could be clearly discriminated with phase-contrast signal. The experimental results demonstrate that grating-based X-ray phase-contrast imaging, with a conventional low-brilliance X-ray source, a large field of view and a reasonable compact setup, which simultaneously yields phase-","authors_text":"Can Zhang, Shenghao Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-23T00:42:43Z","title":"Nondestructive testing of grating imperfections using grating-based X-ray phase-contrast imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07557","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":"sha256:033bbee9b564fff9e9ba40df700dfccdaedb7c1c4972e26b5b6e3d1e41cd015d","target":"record","created_at":"2026-05-18T00:17:30Z","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":"91cf809ae0caa4d4380dddf02f765f0af1e331bb251cd87a157b4c948ed096b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-08-23T00:42:43Z","title_canon_sha256":"69f59e21a9837d66d8739ca7ed29685c9cca6c26dc618e0fb0469bb7cbb0915c"},"schema_version":"1.0","source":{"id":"1708.07557","kind":"arxiv","version":1}},"canonical_sha256":"93526b6820a769fe87f907fc16a99e656fe0113c55c2b10f9d74e4fa6af53f75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93526b6820a769fe87f907fc16a99e656fe0113c55c2b10f9d74e4fa6af53f75","first_computed_at":"2026-05-18T00:17:30.642022Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:30.642022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TcGD2J7WmaD+Ez2dBTqCKOBS4RRKF93Fr9v8UaXn41tzVkxAPajuAj2bOAmfXq/UpO+DZGHADZC9mksM+Nb8Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:30.642692Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.07557","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:033bbee9b564fff9e9ba40df700dfccdaedb7c1c4972e26b5b6e3d1e41cd015d","sha256:a2553d4c7977850f77b1be8513a86ee3f80d7245973947286aba010053c35f2b"],"state_sha256":"3f96ca37c6a8a6bfb59e51897cc9bcd20f378f0b63bf88be7974471fa4d9a5f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y+90K7CtnvKqBq4zQ4cFLZBb7PCkWurrzZ/yprXI7epZMZZstHJm9irElT3FXJO34Zc0RrL9qizPuCDzpuRECw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T17:54:16.254415Z","bundle_sha256":"9b95741ea15313bcc9671a9e047e8a182db9d9e44131ed009c3fcfbac3335288"}}