{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:AXPD3UD4PJFFPIYEXWNO7B62DY","short_pith_number":"pith:AXPD3UD4","canonical_record":{"source":{"id":"2508.16953","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-08-23T08:56:00Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"656ade5d0e5b2f8d7fb7e2505a3724238f34194882ddf1f8d3912221bfd6f5b5","abstract_canon_sha256":"535463d75826b2c9ae5ddf2cb89512ab48d9c5e9f93f2a2a868765e23a6d5d1a"},"schema_version":"1.0"},"canonical_sha256":"05de3dd07c7a4a57a304bd9aef87da1e0101027d2126a73c3c6aae6c1ae17a30","source":{"kind":"arxiv","id":"2508.16953","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.16953","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"arxiv_version","alias_value":"2508.16953v1","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.16953","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"pith_short_12","alias_value":"AXPD3UD4PJFF","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"pith_short_16","alias_value":"AXPD3UD4PJFFPIYE","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"pith_short_8","alias_value":"AXPD3UD4","created_at":"2026-07-05T11:58:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:AXPD3UD4PJFFPIYEXWNO7B62DY","target":"record","payload":{"canonical_record":{"source":{"id":"2508.16953","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-08-23T08:56:00Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"656ade5d0e5b2f8d7fb7e2505a3724238f34194882ddf1f8d3912221bfd6f5b5","abstract_canon_sha256":"535463d75826b2c9ae5ddf2cb89512ab48d9c5e9f93f2a2a868765e23a6d5d1a"},"schema_version":"1.0"},"canonical_sha256":"05de3dd07c7a4a57a304bd9aef87da1e0101027d2126a73c3c6aae6c1ae17a30","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:58:07.011922Z","signature_b64":"AAgg7b2hhOQDRBjz2rOqrMVWhT9MSHhOuuAGMrxM7iBbTOusjhtqUZgYMhguxtj+msfp9J0v66lbCXSMZH33Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05de3dd07c7a4a57a304bd9aef87da1e0101027d2126a73c3c6aae6c1ae17a30","last_reissued_at":"2026-07-05T11:58:07.011498Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:58:07.011498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.16953","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":"2026-07-05T11:58:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1iKNX/mRf+rvpicyRaezlmFpJVPxI19diENjhy6h24F41RFJAMka33mRMwkrEJTrMQwXVfms5lYyDNShUpFjBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T15:36:47.181184Z"},"content_sha256":"04d1be99bcbf047821d12c58d7684a0d0bb5248ebd32c06a148c8022eff7cd01","schema_version":"1.0","event_id":"sha256:04d1be99bcbf047821d12c58d7684a0d0bb5248ebd32c06a148c8022eff7cd01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:AXPD3UD4PJFFPIYEXWNO7B62DY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optics for broadband x-ray ptychography","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.optics","authors_text":"Darren Batey, Matthieu Boone, Silvia Cipiccia, Wiebe Stolp","submitted_at":"2025-08-23T08:56:00Z","abstract_excerpt":"In conventional x-ray ptychography, diffraction data is collected by scanning a sample through a monochromatic, and spatially coherent, x-ray beam. A high-resolution image is then retrieved using an iterative algorithm. Combined with a scan of the incident photon energy, it is also possible to access chemical and elemental information. Although powerful, the high brilliance required currently constrains the method to 3rd and 4th generation synchrotron sources and long scanning times. An alternative approach is to use a broadband illumination in combination with an energy resolving detector. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.16953","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/2508.16953/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":"2026-07-05T11:58:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fIBJqHL9uOKcCa/GOEOBEl6Hcekn2OGAYa3X+HFmKoqcB9MuEwL+BxlcND8eJ9JIR3NzxNYTV8RIwKLtNRZeCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T15:36:47.181614Z"},"content_sha256":"2e82f25d39bdc2d9c260479224239de2a6eb0a089161b27301e086e4da6e3f53","schema_version":"1.0","event_id":"sha256:2e82f25d39bdc2d9c260479224239de2a6eb0a089161b27301e086e4da6e3f53"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AXPD3UD4PJFFPIYEXWNO7B62DY/bundle.json","state_url":"https://pith.science/pith/AXPD3UD4PJFFPIYEXWNO7B62DY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AXPD3UD4PJFFPIYEXWNO7B62DY/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":"2026-07-08T15:36:47Z","links":{"resolver":"https://pith.science/pith/AXPD3UD4PJFFPIYEXWNO7B62DY","bundle":"https://pith.science/pith/AXPD3UD4PJFFPIYEXWNO7B62DY/bundle.json","state":"https://pith.science/pith/AXPD3UD4PJFFPIYEXWNO7B62DY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AXPD3UD4PJFFPIYEXWNO7B62DY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:AXPD3UD4PJFFPIYEXWNO7B62DY","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":"535463d75826b2c9ae5ddf2cb89512ab48d9c5e9f93f2a2a868765e23a6d5d1a","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-08-23T08:56:00Z","title_canon_sha256":"656ade5d0e5b2f8d7fb7e2505a3724238f34194882ddf1f8d3912221bfd6f5b5"},"schema_version":"1.0","source":{"id":"2508.16953","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.16953","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"arxiv_version","alias_value":"2508.16953v1","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.16953","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"pith_short_12","alias_value":"AXPD3UD4PJFF","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"pith_short_16","alias_value":"AXPD3UD4PJFFPIYE","created_at":"2026-07-05T11:58:07Z"},{"alias_kind":"pith_short_8","alias_value":"AXPD3UD4","created_at":"2026-07-05T11:58:07Z"}],"graph_snapshots":[{"event_id":"sha256:2e82f25d39bdc2d9c260479224239de2a6eb0a089161b27301e086e4da6e3f53","target":"graph","created_at":"2026-07-05T11:58:07Z","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/2508.16953/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In conventional x-ray ptychography, diffraction data is collected by scanning a sample through a monochromatic, and spatially coherent, x-ray beam. A high-resolution image is then retrieved using an iterative algorithm. Combined with a scan of the incident photon energy, it is also possible to access chemical and elemental information. Although powerful, the high brilliance required currently constrains the method to 3rd and 4th generation synchrotron sources and long scanning times. An alternative approach is to use a broadband illumination in combination with an energy resolving detector. Th","authors_text":"Darren Batey, Matthieu Boone, Silvia Cipiccia, Wiebe Stolp","cross_cats":["physics.ins-det"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-08-23T08:56:00Z","title":"Optics for broadband x-ray ptychography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.16953","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":"sha256:04d1be99bcbf047821d12c58d7684a0d0bb5248ebd32c06a148c8022eff7cd01","target":"record","created_at":"2026-07-05T11:58:07Z","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":"535463d75826b2c9ae5ddf2cb89512ab48d9c5e9f93f2a2a868765e23a6d5d1a","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2025-08-23T08:56:00Z","title_canon_sha256":"656ade5d0e5b2f8d7fb7e2505a3724238f34194882ddf1f8d3912221bfd6f5b5"},"schema_version":"1.0","source":{"id":"2508.16953","kind":"arxiv","version":1}},"canonical_sha256":"05de3dd07c7a4a57a304bd9aef87da1e0101027d2126a73c3c6aae6c1ae17a30","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05de3dd07c7a4a57a304bd9aef87da1e0101027d2126a73c3c6aae6c1ae17a30","first_computed_at":"2026-07-05T11:58:07.011498Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:58:07.011498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AAgg7b2hhOQDRBjz2rOqrMVWhT9MSHhOuuAGMrxM7iBbTOusjhtqUZgYMhguxtj+msfp9J0v66lbCXSMZH33Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T11:58:07.011922Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.16953","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04d1be99bcbf047821d12c58d7684a0d0bb5248ebd32c06a148c8022eff7cd01","sha256:2e82f25d39bdc2d9c260479224239de2a6eb0a089161b27301e086e4da6e3f53"],"state_sha256":"307168f6b2a5e11180531fb09bdb173d9029d8911ab3e986a164b5020369791d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3qwiwthu5fg3WsvXtA4B1wUb6Z1zXOD55117p6B8nPuEo3GsbepOSQmuLjqvK6fjlfsTUm42VdsaMNAAP9dwBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T15:36:47.183933Z","bundle_sha256":"6c3fa931f9b4d1f555d2d809e40176ba0e1a53e80b3dd8dffe0817c1ec719977"}}