{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:YFSCR6VPDBBBULV5XCFXWV7JSQ","short_pith_number":"pith:YFSCR6VP","canonical_record":{"source":{"id":"1303.4477","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-19T03:18:51Z","cross_cats_sorted":[],"title_canon_sha256":"b26700a112c5536ff3559ad9644f9371b30975b5aa0b39bf59924e8565cf891b","abstract_canon_sha256":"2555ae92094534f3283408c190ce300900a2fe204f809aa9e81c7012b321db9e"},"schema_version":"1.0"},"canonical_sha256":"c16428faaf18421a2ebdb88b7b57e99428072cb6f89eb276aef0f872e2d1f1c4","source":{"kind":"arxiv","id":"1303.4477","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.4477","created_at":"2026-05-18T03:21:43Z"},{"alias_kind":"arxiv_version","alias_value":"1303.4477v2","created_at":"2026-05-18T03:21:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.4477","created_at":"2026-05-18T03:21:43Z"},{"alias_kind":"pith_short_12","alias_value":"YFSCR6VPDBBB","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YFSCR6VPDBBBULV5","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YFSCR6VP","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:YFSCR6VPDBBBULV5XCFXWV7JSQ","target":"record","payload":{"canonical_record":{"source":{"id":"1303.4477","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-19T03:18:51Z","cross_cats_sorted":[],"title_canon_sha256":"b26700a112c5536ff3559ad9644f9371b30975b5aa0b39bf59924e8565cf891b","abstract_canon_sha256":"2555ae92094534f3283408c190ce300900a2fe204f809aa9e81c7012b321db9e"},"schema_version":"1.0"},"canonical_sha256":"c16428faaf18421a2ebdb88b7b57e99428072cb6f89eb276aef0f872e2d1f1c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:21:43.182675Z","signature_b64":"hwebSVGsI79oJV7WrMUOXIrdZq4j0CCAKiKsvht25kH8uN/BMgHPTWupVvwk3LbPgz/6+JFgPSp1STcYGRdHAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c16428faaf18421a2ebdb88b7b57e99428072cb6f89eb276aef0f872e2d1f1c4","last_reissued_at":"2026-05-18T03:21:43.181935Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:21:43.181935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.4477","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:21:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pqoUvhDnqozL7Z8hZ8I6l9TQqJfX52K7BEvbhF81Mb36w/5tlmW+ZxNySj5MxdN960/YG8Qbx2ZQXcPG16/CCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T03:32:10.628541Z"},"content_sha256":"0b1a53b6ab36ed7151f84ba9b8aa1df0529ded63e86bafe9c8f35332dae92dd2","schema_version":"1.0","event_id":"sha256:0b1a53b6ab36ed7151f84ba9b8aa1df0529ded63e86bafe9c8f35332dae92dd2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:YFSCR6VPDBBBULV5XCFXWV7JSQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Odd-symmetry phase gratings produce optical nulls uniquely insensitive to wavelength and depth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Patrick R. Gill","submitted_at":"2013-03-19T03:18:51Z","abstract_excerpt":"I present the analysis of a new class of diffractive optical element, the odd-symmetry phase grating, which creates wavelength- and depth-robust features in its near-field diffraction pattern."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.4477","kind":"arxiv","version":2},"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":"2026-05-18T03:21:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jw9DX9JIir/UOgn0CJNYIngwzcadU3V/O/mga6FLH1OKAvezuaUKBBRRhWTqy5deYrew2GnvOm0z6Q9GicqIBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T03:32:10.628883Z"},"content_sha256":"b61c41ecd831b2a9885d6d74e913670927424a0a5883eac9f4cf9019fa6ec8fc","schema_version":"1.0","event_id":"sha256:b61c41ecd831b2a9885d6d74e913670927424a0a5883eac9f4cf9019fa6ec8fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YFSCR6VPDBBBULV5XCFXWV7JSQ/bundle.json","state_url":"https://pith.science/pith/YFSCR6VPDBBBULV5XCFXWV7JSQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YFSCR6VPDBBBULV5XCFXWV7JSQ/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":"2026-06-24T03:32:10Z","links":{"resolver":"https://pith.science/pith/YFSCR6VPDBBBULV5XCFXWV7JSQ","bundle":"https://pith.science/pith/YFSCR6VPDBBBULV5XCFXWV7JSQ/bundle.json","state":"https://pith.science/pith/YFSCR6VPDBBBULV5XCFXWV7JSQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YFSCR6VPDBBBULV5XCFXWV7JSQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YFSCR6VPDBBBULV5XCFXWV7JSQ","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":"2555ae92094534f3283408c190ce300900a2fe204f809aa9e81c7012b321db9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-19T03:18:51Z","title_canon_sha256":"b26700a112c5536ff3559ad9644f9371b30975b5aa0b39bf59924e8565cf891b"},"schema_version":"1.0","source":{"id":"1303.4477","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.4477","created_at":"2026-05-18T03:21:43Z"},{"alias_kind":"arxiv_version","alias_value":"1303.4477v2","created_at":"2026-05-18T03:21:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.4477","created_at":"2026-05-18T03:21:43Z"},{"alias_kind":"pith_short_12","alias_value":"YFSCR6VPDBBB","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YFSCR6VPDBBBULV5","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YFSCR6VP","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:b61c41ecd831b2a9885d6d74e913670927424a0a5883eac9f4cf9019fa6ec8fc","target":"graph","created_at":"2026-05-18T03:21:43Z","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":"I present the analysis of a new class of diffractive optical element, the odd-symmetry phase grating, which creates wavelength- and depth-robust features in its near-field diffraction pattern.","authors_text":"Patrick R. Gill","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-19T03:18:51Z","title":"Odd-symmetry phase gratings produce optical nulls uniquely insensitive to wavelength and depth"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.4477","kind":"arxiv","version":2},"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":"sha256:0b1a53b6ab36ed7151f84ba9b8aa1df0529ded63e86bafe9c8f35332dae92dd2","target":"record","created_at":"2026-05-18T03:21:43Z","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":"2555ae92094534f3283408c190ce300900a2fe204f809aa9e81c7012b321db9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-19T03:18:51Z","title_canon_sha256":"b26700a112c5536ff3559ad9644f9371b30975b5aa0b39bf59924e8565cf891b"},"schema_version":"1.0","source":{"id":"1303.4477","kind":"arxiv","version":2}},"canonical_sha256":"c16428faaf18421a2ebdb88b7b57e99428072cb6f89eb276aef0f872e2d1f1c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c16428faaf18421a2ebdb88b7b57e99428072cb6f89eb276aef0f872e2d1f1c4","first_computed_at":"2026-05-18T03:21:43.181935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:21:43.181935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hwebSVGsI79oJV7WrMUOXIrdZq4j0CCAKiKsvht25kH8uN/BMgHPTWupVvwk3LbPgz/6+JFgPSp1STcYGRdHAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:21:43.182675Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.4477","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b1a53b6ab36ed7151f84ba9b8aa1df0529ded63e86bafe9c8f35332dae92dd2","sha256:b61c41ecd831b2a9885d6d74e913670927424a0a5883eac9f4cf9019fa6ec8fc"],"state_sha256":"b5967024f27be970ea6681ba0857d68bd184907990c3469edd3df01f9c8f8a33"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jF1/RkJzznOHDSKefxCA4TdfP58Zmm4S3YPNdmN5mw/pp8CEfqu2nlDftPsocLUJ+XJ5rYvZJLKQz7sddJO6Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T03:32:10.630842Z","bundle_sha256":"922baffccfce57684c2eb7a038cbc84a8f2e2b8ea4173e6088da763255f6a4ce"}}