{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:CR5HDEZDEX7232T2SYV5IZHK2A","short_pith_number":"pith:CR5HDEZD","canonical_record":{"source":{"id":"1001.0580","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-04T22:03:09Z","cross_cats_sorted":[],"title_canon_sha256":"9f07139a645b904f966c7da55eaedb2b3578c570b70eff00b171a3b52d1ab3f5","abstract_canon_sha256":"f3cbbb1f24c08630c94ebe6cb6ba458748db7f13dd99746faee0892e73deeca8"},"schema_version":"1.0"},"canonical_sha256":"147a71932325ffadea7a962bd464ead0165310ef4f6d66a3033df27b6b8fd2f6","source":{"kind":"arxiv","id":"1001.0580","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.0580","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"arxiv_version","alias_value":"1001.0580v2","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.0580","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"pith_short_12","alias_value":"CR5HDEZDEX72","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"CR5HDEZDEX7232T2","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"CR5HDEZD","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:CR5HDEZDEX7232T2SYV5IZHK2A","target":"record","payload":{"canonical_record":{"source":{"id":"1001.0580","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-04T22:03:09Z","cross_cats_sorted":[],"title_canon_sha256":"9f07139a645b904f966c7da55eaedb2b3578c570b70eff00b171a3b52d1ab3f5","abstract_canon_sha256":"f3cbbb1f24c08630c94ebe6cb6ba458748db7f13dd99746faee0892e73deeca8"},"schema_version":"1.0"},"canonical_sha256":"147a71932325ffadea7a962bd464ead0165310ef4f6d66a3033df27b6b8fd2f6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:05.212694Z","signature_b64":"ZCHq/hDYVXHEKS7GUtCmAQiFh7Rqggtx118rRMX90QA1nrwvoueqyxYCT7+ewZu/kWyDfBvglWsEycido0tQCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"147a71932325ffadea7a962bd464ead0165310ef4f6d66a3033df27b6b8fd2f6","last_reissued_at":"2026-05-18T02:10:05.212084Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:05.212084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.0580","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":"2026-05-18T02:10:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lDV2iHueHa7NJmBIlHxUyjfiewMQUbNmbEruqINCB/rDRG48f5PPMBE0PtuodRQiv1duFXzScJHhrom6BpqYAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:36:13.034918Z"},"content_sha256":"77548f6391d6313194e79f75b77e8b93204ccd5fd001fe14dad770bbdf355f2f","schema_version":"1.0","event_id":"sha256:77548f6391d6313194e79f75b77e8b93204ccd5fd001fe14dad770bbdf355f2f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:CR5HDEZDEX7232T2SYV5IZHK2A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photonic Crystal Spectrometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Hassan M. Edrees, Ioannis Kymissis, Marshall P. Cox, Nadia K. Pervez, Warren Cheng, Zhang Jia","submitted_at":"2010-01-04T22:03:09Z","abstract_excerpt":"We demonstrate a new kind of optical spectrometer employing photonic crystal patterns to outcouple waveguided light from a transparent substrate. This spectrometer consists of an array of photonic crystal patterns, nanofabricated in a polymer on a glass substrate, combined with a camera. The camera captures an image of the light outcoupled from the patterned substrate; the array of patterns produces a spatially resolved map of intensities for different wavelength bands. The intensity map of the image is converted into a spectrum using the photonic crystal pattern response functions. We present"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.0580","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":"2026-05-18T02:10:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sRnHTFabGf+a7lLQLcb3yZacxHoiYKp7wp9/2yCw+EmdFqff7ea/haySyyV5THIl8h2wzPBrU/XQyxagrcEPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:36:13.035267Z"},"content_sha256":"01d29054a625bf2a7d6c477c5184b5b6ee111b2bf6aa0bb7ed50eb5b8b32aaa4","schema_version":"1.0","event_id":"sha256:01d29054a625bf2a7d6c477c5184b5b6ee111b2bf6aa0bb7ed50eb5b8b32aaa4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CR5HDEZDEX7232T2SYV5IZHK2A/bundle.json","state_url":"https://pith.science/pith/CR5HDEZDEX7232T2SYV5IZHK2A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CR5HDEZDEX7232T2SYV5IZHK2A/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":"2026-06-01T20:36:13Z","links":{"resolver":"https://pith.science/pith/CR5HDEZDEX7232T2SYV5IZHK2A","bundle":"https://pith.science/pith/CR5HDEZDEX7232T2SYV5IZHK2A/bundle.json","state":"https://pith.science/pith/CR5HDEZDEX7232T2SYV5IZHK2A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CR5HDEZDEX7232T2SYV5IZHK2A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:CR5HDEZDEX7232T2SYV5IZHK2A","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":"f3cbbb1f24c08630c94ebe6cb6ba458748db7f13dd99746faee0892e73deeca8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-04T22:03:09Z","title_canon_sha256":"9f07139a645b904f966c7da55eaedb2b3578c570b70eff00b171a3b52d1ab3f5"},"schema_version":"1.0","source":{"id":"1001.0580","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.0580","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"arxiv_version","alias_value":"1001.0580v2","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.0580","created_at":"2026-05-18T02:10:05Z"},{"alias_kind":"pith_short_12","alias_value":"CR5HDEZDEX72","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"CR5HDEZDEX7232T2","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"CR5HDEZD","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:01d29054a625bf2a7d6c477c5184b5b6ee111b2bf6aa0bb7ed50eb5b8b32aaa4","target":"graph","created_at":"2026-05-18T02:10:05Z","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 demonstrate a new kind of optical spectrometer employing photonic crystal patterns to outcouple waveguided light from a transparent substrate. This spectrometer consists of an array of photonic crystal patterns, nanofabricated in a polymer on a glass substrate, combined with a camera. The camera captures an image of the light outcoupled from the patterned substrate; the array of patterns produces a spatially resolved map of intensities for different wavelength bands. The intensity map of the image is converted into a spectrum using the photonic crystal pattern response functions. We present","authors_text":"Hassan M. Edrees, Ioannis Kymissis, Marshall P. Cox, Nadia K. Pervez, Warren Cheng, Zhang Jia","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-04T22:03:09Z","title":"Photonic Crystal Spectrometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.0580","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":"sha256:77548f6391d6313194e79f75b77e8b93204ccd5fd001fe14dad770bbdf355f2f","target":"record","created_at":"2026-05-18T02:10:05Z","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":"f3cbbb1f24c08630c94ebe6cb6ba458748db7f13dd99746faee0892e73deeca8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2010-01-04T22:03:09Z","title_canon_sha256":"9f07139a645b904f966c7da55eaedb2b3578c570b70eff00b171a3b52d1ab3f5"},"schema_version":"1.0","source":{"id":"1001.0580","kind":"arxiv","version":2}},"canonical_sha256":"147a71932325ffadea7a962bd464ead0165310ef4f6d66a3033df27b6b8fd2f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"147a71932325ffadea7a962bd464ead0165310ef4f6d66a3033df27b6b8fd2f6","first_computed_at":"2026-05-18T02:10:05.212084Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:05.212084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZCHq/hDYVXHEKS7GUtCmAQiFh7Rqggtx118rRMX90QA1nrwvoueqyxYCT7+ewZu/kWyDfBvglWsEycido0tQCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:05.212694Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.0580","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77548f6391d6313194e79f75b77e8b93204ccd5fd001fe14dad770bbdf355f2f","sha256:01d29054a625bf2a7d6c477c5184b5b6ee111b2bf6aa0bb7ed50eb5b8b32aaa4"],"state_sha256":"d6d3b994239a215a3f49d06f191a375486efab22c125f31f326619e5893a99bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ltmkbMvVD0BhYUIeXOwTtC/ie2sSv4+jGF6/9s5XMeuDihMwa/ozVgGfLJJ42kS12EKWm+6Wux0sNxgJ7cv2AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T20:36:13.037213Z","bundle_sha256":"aa837a8eadf22eca69b6dd70e3f8f69ed225ca1c0445b3829548128c610c8149"}}