{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:FNV3WGMLN4MTIXMKE64PZ2PJCQ","short_pith_number":"pith:FNV3WGML","canonical_record":{"source":{"id":"1403.4398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-18T10:37:56Z","cross_cats_sorted":[],"title_canon_sha256":"b76c936e963d38b14625f6bb070636025a34873c9ad4ea24e8ab7a95feb69388","abstract_canon_sha256":"66de4e8ab7b3a90a855220c09b6375821fc4d8360661111a41c999294b1e4ed7"},"schema_version":"1.0"},"canonical_sha256":"2b6bbb198b6f19345d8a27b8fce9e91434188792a41800827336b7dcd3be687b","source":{"kind":"arxiv","id":"1403.4398","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4398","created_at":"2026-05-18T02:51:33Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4398v1","created_at":"2026-05-18T02:51:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4398","created_at":"2026-05-18T02:51:33Z"},{"alias_kind":"pith_short_12","alias_value":"FNV3WGMLN4MT","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"FNV3WGMLN4MTIXMK","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"FNV3WGML","created_at":"2026-05-18T12:28:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:FNV3WGMLN4MTIXMKE64PZ2PJCQ","target":"record","payload":{"canonical_record":{"source":{"id":"1403.4398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-18T10:37:56Z","cross_cats_sorted":[],"title_canon_sha256":"b76c936e963d38b14625f6bb070636025a34873c9ad4ea24e8ab7a95feb69388","abstract_canon_sha256":"66de4e8ab7b3a90a855220c09b6375821fc4d8360661111a41c999294b1e4ed7"},"schema_version":"1.0"},"canonical_sha256":"2b6bbb198b6f19345d8a27b8fce9e91434188792a41800827336b7dcd3be687b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:51:33.183893Z","signature_b64":"f1K1mj1Aiv0ja7on9MAIGQaUqO53UBNCPLMDcEbBrGX6osudfaskp2anXKmVnQu2eR5aLnxbT9eMEKppb5jgBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b6bbb198b6f19345d8a27b8fce9e91434188792a41800827336b7dcd3be687b","last_reissued_at":"2026-05-18T02:51:33.183296Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:51:33.183296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.4398","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":"2026-05-18T02:51:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n8eWECwmtQev3O08r9qv+qd4smE2LhfCUI7v5q/yMrQENjhuJA9LnkraNJpE/7wJt/vS0jTKb8b7AoV6ZzM0DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:46:38.739171Z"},"content_sha256":"b71d43bfc9733a7e4869707f928b5b2ddbd4fb62072ad95c4cf978d3f4349eb9","schema_version":"1.0","event_id":"sha256:b71d43bfc9733a7e4869707f928b5b2ddbd4fb62072ad95c4cf978d3f4349eb9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:FNV3WGMLN4MTIXMKE64PZ2PJCQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantitative measurement of orbital angular momentum in electron microscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"A. B\\'ech\\'e, G. Guzzinati, J. Verbeeck, L. Clark","submitted_at":"2014-03-18T10:37:56Z","abstract_excerpt":"Electron vortex beams have been predicted to enable atomic scale magnetic information measurement, via transfer of orbital angular momentum. Research so far has focussed on developing production techniques and applications of these beams. However, methods to measure the outgoing orbital angular momentum distribution are also a crucial requirement towards this goal. Here, we use a method to obtain the orbital angular momentum decomposition of an electron beam, using a multi-pinhole interferometer. We demonstrate both its ability to accurately measure orbital angular momentum distribution, and i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4398","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":"2026-05-18T02:51:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SA7YEUhn2BIdaY9Tmo9Yy1oQyQk+g53oickqpn9tG58kdV9xWBY4AxIzVxbHfy1kCDW8uueyRJPALEW7dHg4CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:46:38.739533Z"},"content_sha256":"79537c8415a25f2cdbbfc1b306a22664037674dd920817ef1699ce46ac340625","schema_version":"1.0","event_id":"sha256:79537c8415a25f2cdbbfc1b306a22664037674dd920817ef1699ce46ac340625"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FNV3WGMLN4MTIXMKE64PZ2PJCQ/bundle.json","state_url":"https://pith.science/pith/FNV3WGMLN4MTIXMKE64PZ2PJCQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FNV3WGMLN4MTIXMKE64PZ2PJCQ/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":"2026-05-28T13:46:38Z","links":{"resolver":"https://pith.science/pith/FNV3WGMLN4MTIXMKE64PZ2PJCQ","bundle":"https://pith.science/pith/FNV3WGMLN4MTIXMKE64PZ2PJCQ/bundle.json","state":"https://pith.science/pith/FNV3WGMLN4MTIXMKE64PZ2PJCQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FNV3WGMLN4MTIXMKE64PZ2PJCQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:FNV3WGMLN4MTIXMKE64PZ2PJCQ","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":"66de4e8ab7b3a90a855220c09b6375821fc4d8360661111a41c999294b1e4ed7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-18T10:37:56Z","title_canon_sha256":"b76c936e963d38b14625f6bb070636025a34873c9ad4ea24e8ab7a95feb69388"},"schema_version":"1.0","source":{"id":"1403.4398","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4398","created_at":"2026-05-18T02:51:33Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4398v1","created_at":"2026-05-18T02:51:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4398","created_at":"2026-05-18T02:51:33Z"},{"alias_kind":"pith_short_12","alias_value":"FNV3WGMLN4MT","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"FNV3WGMLN4MTIXMK","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"FNV3WGML","created_at":"2026-05-18T12:28:28Z"}],"graph_snapshots":[{"event_id":"sha256:79537c8415a25f2cdbbfc1b306a22664037674dd920817ef1699ce46ac340625","target":"graph","created_at":"2026-05-18T02:51:33Z","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":"Electron vortex beams have been predicted to enable atomic scale magnetic information measurement, via transfer of orbital angular momentum. Research so far has focussed on developing production techniques and applications of these beams. However, methods to measure the outgoing orbital angular momentum distribution are also a crucial requirement towards this goal. Here, we use a method to obtain the orbital angular momentum decomposition of an electron beam, using a multi-pinhole interferometer. We demonstrate both its ability to accurately measure orbital angular momentum distribution, and i","authors_text":"A. B\\'ech\\'e, G. Guzzinati, J. Verbeeck, L. Clark","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-18T10:37:56Z","title":"Quantitative measurement of orbital angular momentum in electron microscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4398","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:b71d43bfc9733a7e4869707f928b5b2ddbd4fb62072ad95c4cf978d3f4349eb9","target":"record","created_at":"2026-05-18T02:51:33Z","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":"66de4e8ab7b3a90a855220c09b6375821fc4d8360661111a41c999294b1e4ed7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-03-18T10:37:56Z","title_canon_sha256":"b76c936e963d38b14625f6bb070636025a34873c9ad4ea24e8ab7a95feb69388"},"schema_version":"1.0","source":{"id":"1403.4398","kind":"arxiv","version":1}},"canonical_sha256":"2b6bbb198b6f19345d8a27b8fce9e91434188792a41800827336b7dcd3be687b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2b6bbb198b6f19345d8a27b8fce9e91434188792a41800827336b7dcd3be687b","first_computed_at":"2026-05-18T02:51:33.183296Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:51:33.183296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f1K1mj1Aiv0ja7on9MAIGQaUqO53UBNCPLMDcEbBrGX6osudfaskp2anXKmVnQu2eR5aLnxbT9eMEKppb5jgBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:51:33.183893Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.4398","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b71d43bfc9733a7e4869707f928b5b2ddbd4fb62072ad95c4cf978d3f4349eb9","sha256:79537c8415a25f2cdbbfc1b306a22664037674dd920817ef1699ce46ac340625"],"state_sha256":"4e07eadc2b46a61516fa7787a18a580dd9c11ba746a2579064aefff3d7689d33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6bAZVv2giE6LeBsLvNEJJ080IpEIpQ7HK0ToeY6SMf29ayvJrR419J8e1q0tjWt8DJVVH/lt0eNDKNDdxeczBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T13:46:38.741408Z","bundle_sha256":"28a36113c45beb84df2768485996307a784dfe814af7c822b0333fab0850670d"}}