{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:52EOTAGZWZPIIJSFK6T5NVUOL4","short_pith_number":"pith:52EOTAGZ","canonical_record":{"source":{"id":"1805.08725","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-21T09:49:59Z","cross_cats_sorted":["physics.class-ph","quant-ph"],"title_canon_sha256":"f0b0d18c6e32f3752ed6140bcc9308c41b3c51a5369656bc62241576dcc1c63b","abstract_canon_sha256":"d58c2bc6be812a70f05418ed12fb6f873d6ec637549446c0f441f2c30cb2bd69"},"schema_version":"1.0"},"canonical_sha256":"ee88e980d9b65e84264557a7d6d68e5f0d8abc9fa1acfd833cc53887f5185aa7","source":{"kind":"arxiv","id":"1805.08725","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08725","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08725v3","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08725","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"pith_short_12","alias_value":"52EOTAGZWZPI","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"52EOTAGZWZPIIJSF","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"52EOTAGZ","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:52EOTAGZWZPIIJSFK6T5NVUOL4","target":"record","payload":{"canonical_record":{"source":{"id":"1805.08725","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-21T09:49:59Z","cross_cats_sorted":["physics.class-ph","quant-ph"],"title_canon_sha256":"f0b0d18c6e32f3752ed6140bcc9308c41b3c51a5369656bc62241576dcc1c63b","abstract_canon_sha256":"d58c2bc6be812a70f05418ed12fb6f873d6ec637549446c0f441f2c30cb2bd69"},"schema_version":"1.0"},"canonical_sha256":"ee88e980d9b65e84264557a7d6d68e5f0d8abc9fa1acfd833cc53887f5185aa7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:23.234995Z","signature_b64":"eeqgyoyKkPcBKn6tdUWPQlkYPNYBB+zZpHAddpEBTDOkOZrbbN4DtcpfUCAzTgAKfeIYBypbu9FEde/SpvRRCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ee88e980d9b65e84264557a7d6d68e5f0d8abc9fa1acfd833cc53887f5185aa7","last_reissued_at":"2026-05-18T00:11:23.234266Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:23.234266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.08725","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:11:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qJqHBv3Wfsj/cvGWVbdDg/lNatZ4cQF7v4xB7xH26xbL/TLrb+tOpb/ksdcWl6rIWZvLiKI5Kk+9CBRoNLs7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T12:42:47.824735Z"},"content_sha256":"6e0a93b88438f8994f1d56b9de7d4e3cfd46dfc548418e427d1c8d3e87a185e1","schema_version":"1.0","event_id":"sha256:6e0a93b88438f8994f1d56b9de7d4e3cfd46dfc548418e427d1c8d3e87a185e1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:52EOTAGZWZPIIJSFK6T5NVUOL4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Frequency crystal","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.class-ph","quant-ph"],"primary_cat":"physics.optics","authors_text":"R. N. Shakhmuratov","submitted_at":"2018-05-21T09:49:59Z","abstract_excerpt":"Pulse filtering through a medium with infinite periodic structure in transmission spectrum is analyzed. Two types of filters are considered. The first, named harmonic frequency crystal (HFC), is the filter whose widths of transmitting and absorbing windows are equal. The second, named anharmonic frequency crystal (AHFC), has narrow absorption peaks separated by wide transmission windows. AHFC of moderate optical thickness demonstrates properties quite similar to those of high finesse atomic frequency comb (AFC) with limited number of the absorption peaks, which produce a few pulses from a shor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08725","kind":"arxiv","version":3},"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":"2026-05-18T00:11:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jr4AI3A/tMl7BYJaV7HXtrL/a5UqFvOsfx7QZPyN5i2YzCb7VX9vzaGlJQHbaLfJ3zlcsUAHJ9jyJNqTZWILBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T12:42:47.825083Z"},"content_sha256":"b4222efb012b6a7cd65feb2bb9c6fd4f6710b218c2196dcabcb210a5da60c24f","schema_version":"1.0","event_id":"sha256:b4222efb012b6a7cd65feb2bb9c6fd4f6710b218c2196dcabcb210a5da60c24f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/52EOTAGZWZPIIJSFK6T5NVUOL4/bundle.json","state_url":"https://pith.science/pith/52EOTAGZWZPIIJSFK6T5NVUOL4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/52EOTAGZWZPIIJSFK6T5NVUOL4/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":"2026-06-30T12:42:47Z","links":{"resolver":"https://pith.science/pith/52EOTAGZWZPIIJSFK6T5NVUOL4","bundle":"https://pith.science/pith/52EOTAGZWZPIIJSFK6T5NVUOL4/bundle.json","state":"https://pith.science/pith/52EOTAGZWZPIIJSFK6T5NVUOL4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/52EOTAGZWZPIIJSFK6T5NVUOL4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:52EOTAGZWZPIIJSFK6T5NVUOL4","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":"d58c2bc6be812a70f05418ed12fb6f873d6ec637549446c0f441f2c30cb2bd69","cross_cats_sorted":["physics.class-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-21T09:49:59Z","title_canon_sha256":"f0b0d18c6e32f3752ed6140bcc9308c41b3c51a5369656bc62241576dcc1c63b"},"schema_version":"1.0","source":{"id":"1805.08725","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08725","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08725v3","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08725","created_at":"2026-05-18T00:11:23Z"},{"alias_kind":"pith_short_12","alias_value":"52EOTAGZWZPI","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"52EOTAGZWZPIIJSF","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"52EOTAGZ","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:b4222efb012b6a7cd65feb2bb9c6fd4f6710b218c2196dcabcb210a5da60c24f","target":"graph","created_at":"2026-05-18T00:11:23Z","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":"Pulse filtering through a medium with infinite periodic structure in transmission spectrum is analyzed. Two types of filters are considered. The first, named harmonic frequency crystal (HFC), is the filter whose widths of transmitting and absorbing windows are equal. The second, named anharmonic frequency crystal (AHFC), has narrow absorption peaks separated by wide transmission windows. AHFC of moderate optical thickness demonstrates properties quite similar to those of high finesse atomic frequency comb (AFC) with limited number of the absorption peaks, which produce a few pulses from a shor","authors_text":"R. N. Shakhmuratov","cross_cats":["physics.class-ph","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-21T09:49:59Z","title":"Frequency crystal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08725","kind":"arxiv","version":3},"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":"sha256:6e0a93b88438f8994f1d56b9de7d4e3cfd46dfc548418e427d1c8d3e87a185e1","target":"record","created_at":"2026-05-18T00:11:23Z","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":"d58c2bc6be812a70f05418ed12fb6f873d6ec637549446c0f441f2c30cb2bd69","cross_cats_sorted":["physics.class-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-21T09:49:59Z","title_canon_sha256":"f0b0d18c6e32f3752ed6140bcc9308c41b3c51a5369656bc62241576dcc1c63b"},"schema_version":"1.0","source":{"id":"1805.08725","kind":"arxiv","version":3}},"canonical_sha256":"ee88e980d9b65e84264557a7d6d68e5f0d8abc9fa1acfd833cc53887f5185aa7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ee88e980d9b65e84264557a7d6d68e5f0d8abc9fa1acfd833cc53887f5185aa7","first_computed_at":"2026-05-18T00:11:23.234266Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:23.234266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eeqgyoyKkPcBKn6tdUWPQlkYPNYBB+zZpHAddpEBTDOkOZrbbN4DtcpfUCAzTgAKfeIYBypbu9FEde/SpvRRCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:23.234995Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.08725","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e0a93b88438f8994f1d56b9de7d4e3cfd46dfc548418e427d1c8d3e87a185e1","sha256:b4222efb012b6a7cd65feb2bb9c6fd4f6710b218c2196dcabcb210a5da60c24f"],"state_sha256":"c22fb7b31b9ae5d8057efdedb5f0b1cd87fd2df88f08b6da2648d54d4c753a8d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5mCb2Onf2zJEML81LOcQdvqIKh0Y+h3nS9FcrNkxX9nL5Ve8f1oGAHJN+KyyrFdHBzBzHSNorMhT/VqjJzAxCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T12:42:47.827253Z","bundle_sha256":"52a7061845237f1ccff10c2331d0a5fb4ff48f278d7d4961a80711adbab20f34"}}