{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:UZERLGVKPAMNPTH6QZWT5FZXTP","short_pith_number":"pith:UZERLGVK","canonical_record":{"source":{"id":"2005.09470","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-05-19T14:17:35Z","cross_cats_sorted":["nlin.CD"],"title_canon_sha256":"7d3f1b5d9fbebe47c01dbcfb625455884237890a2d360a4a0ccb6c58b9b303ad","abstract_canon_sha256":"63be47a305cd9e6251b25ae2fbfe07ca848dceeaf23d17bc6c68e3cd80d8e8bc"},"schema_version":"1.0"},"canonical_sha256":"a649159aaa7818d7ccfe866d3e97379bfbcc3be6865c0479514d0ba4aafc78df","source":{"kind":"arxiv","id":"2005.09470","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.09470","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"arxiv_version","alias_value":"2005.09470v1","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.09470","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_12","alias_value":"UZERLGVKPAMN","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_16","alias_value":"UZERLGVKPAMNPTH6","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_8","alias_value":"UZERLGVK","created_at":"2026-07-05T01:03:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:UZERLGVKPAMNPTH6QZWT5FZXTP","target":"record","payload":{"canonical_record":{"source":{"id":"2005.09470","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-05-19T14:17:35Z","cross_cats_sorted":["nlin.CD"],"title_canon_sha256":"7d3f1b5d9fbebe47c01dbcfb625455884237890a2d360a4a0ccb6c58b9b303ad","abstract_canon_sha256":"63be47a305cd9e6251b25ae2fbfe07ca848dceeaf23d17bc6c68e3cd80d8e8bc"},"schema_version":"1.0"},"canonical_sha256":"a649159aaa7818d7ccfe866d3e97379bfbcc3be6865c0479514d0ba4aafc78df","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:03:50.462967Z","signature_b64":"xyYaU76kpGPB4I+NYkZRhXujso/qtq7hs4cumZ/57RJh+hfOVdyBvsSLBTmQAWOKSyLSNr5vJJqzxx8mO6rxAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a649159aaa7818d7ccfe866d3e97379bfbcc3be6865c0479514d0ba4aafc78df","last_reissued_at":"2026-07-05T01:03:50.462637Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:03:50.462637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.09470","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":"2026-07-05T01:03:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IsFQ+awtQ/efpm9003kvdhl7/hGnytz/52LNHp0cjkRESJ+YB+Cy8yAtb3JaqkEEy/s/iBRcYns75EeJdsHOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T17:22:36.842873Z"},"content_sha256":"4d8703b37552fe6bb904cdc541d8a76461d8d277446514314b5a490b446f1872","schema_version":"1.0","event_id":"sha256:4d8703b37552fe6bb904cdc541d8a76461d8d277446514314b5a490b446f1872"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:UZERLGVKPAMNPTH6QZWT5FZXTP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spontaneous Chaotic Microlasers for Random Number Generation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nlin.CD"],"primary_cat":"physics.optics","authors_text":"Chun-Guang Ma, Jin-Long Xiao, Yong-Zhen Huang, Yue-De Yang, Zhi-Xiong Xiao","submitted_at":"2020-05-19T14:17:35Z","abstract_excerpt":"Chaotic semiconductor lasers have been widely investigated for generating true random numbers with the merit of unpredictability relative to pseudorandom numbers generated by a computing process, especially for the lasers with external optical feedback. Here, we report the first spontaneous chaotic microlaser due to the interaction of nearly degenerate modes. The circular-side hexagonal microlaser is designed and demonstrated with adjusted mode intervals in the order of GHz for the fundamental and the first order transverse modes. Four modes including degenerate modes with strong mode beating "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.09470","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/2005.09470/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":"2026-07-05T01:03:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NCkxQAlypS+AhyI7tf8h6NS6KDgCOF2PlrWHIDTznoM/J0f7GybYcyao/7MtzMU8rcHK/FtVv0LJNLc3yCi3Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T17:22:36.843242Z"},"content_sha256":"2bf5614b79eded583a0580488eb88e1a32415ba4878f4c7a2388a21fb8c2823f","schema_version":"1.0","event_id":"sha256:2bf5614b79eded583a0580488eb88e1a32415ba4878f4c7a2388a21fb8c2823f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UZERLGVKPAMNPTH6QZWT5FZXTP/bundle.json","state_url":"https://pith.science/pith/UZERLGVKPAMNPTH6QZWT5FZXTP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UZERLGVKPAMNPTH6QZWT5FZXTP/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":"2026-07-06T17:22:36Z","links":{"resolver":"https://pith.science/pith/UZERLGVKPAMNPTH6QZWT5FZXTP","bundle":"https://pith.science/pith/UZERLGVKPAMNPTH6QZWT5FZXTP/bundle.json","state":"https://pith.science/pith/UZERLGVKPAMNPTH6QZWT5FZXTP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UZERLGVKPAMNPTH6QZWT5FZXTP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:UZERLGVKPAMNPTH6QZWT5FZXTP","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":"63be47a305cd9e6251b25ae2fbfe07ca848dceeaf23d17bc6c68e3cd80d8e8bc","cross_cats_sorted":["nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-05-19T14:17:35Z","title_canon_sha256":"7d3f1b5d9fbebe47c01dbcfb625455884237890a2d360a4a0ccb6c58b9b303ad"},"schema_version":"1.0","source":{"id":"2005.09470","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.09470","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"arxiv_version","alias_value":"2005.09470v1","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.09470","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_12","alias_value":"UZERLGVKPAMN","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_16","alias_value":"UZERLGVKPAMNPTH6","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_8","alias_value":"UZERLGVK","created_at":"2026-07-05T01:03:50Z"}],"graph_snapshots":[{"event_id":"sha256:2bf5614b79eded583a0580488eb88e1a32415ba4878f4c7a2388a21fb8c2823f","target":"graph","created_at":"2026-07-05T01:03:50Z","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/2005.09470/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Chaotic semiconductor lasers have been widely investigated for generating true random numbers with the merit of unpredictability relative to pseudorandom numbers generated by a computing process, especially for the lasers with external optical feedback. Here, we report the first spontaneous chaotic microlaser due to the interaction of nearly degenerate modes. The circular-side hexagonal microlaser is designed and demonstrated with adjusted mode intervals in the order of GHz for the fundamental and the first order transverse modes. Four modes including degenerate modes with strong mode beating ","authors_text":"Chun-Guang Ma, Jin-Long Xiao, Yong-Zhen Huang, Yue-De Yang, Zhi-Xiong Xiao","cross_cats":["nlin.CD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-05-19T14:17:35Z","title":"Spontaneous Chaotic Microlasers for Random Number Generation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.09470","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":"sha256:4d8703b37552fe6bb904cdc541d8a76461d8d277446514314b5a490b446f1872","target":"record","created_at":"2026-07-05T01:03:50Z","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":"63be47a305cd9e6251b25ae2fbfe07ca848dceeaf23d17bc6c68e3cd80d8e8bc","cross_cats_sorted":["nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-05-19T14:17:35Z","title_canon_sha256":"7d3f1b5d9fbebe47c01dbcfb625455884237890a2d360a4a0ccb6c58b9b303ad"},"schema_version":"1.0","source":{"id":"2005.09470","kind":"arxiv","version":1}},"canonical_sha256":"a649159aaa7818d7ccfe866d3e97379bfbcc3be6865c0479514d0ba4aafc78df","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a649159aaa7818d7ccfe866d3e97379bfbcc3be6865c0479514d0ba4aafc78df","first_computed_at":"2026-07-05T01:03:50.462637Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:03:50.462637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xyYaU76kpGPB4I+NYkZRhXujso/qtq7hs4cumZ/57RJh+hfOVdyBvsSLBTmQAWOKSyLSNr5vJJqzxx8mO6rxAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:03:50.462967Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.09470","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d8703b37552fe6bb904cdc541d8a76461d8d277446514314b5a490b446f1872","sha256:2bf5614b79eded583a0580488eb88e1a32415ba4878f4c7a2388a21fb8c2823f"],"state_sha256":"a9e04703bd5a9a21957b6093b811286eaedf02ec846a8409558abc2d6333985f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FVYybMnQ7YdgQvc44oAnaDTx5ihwTk9gxm7so5lSRMGcnE5a11JMddX+8ZN06FzfIRij1Wzacl8nOgiqT/jlBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T17:22:36.845160Z","bundle_sha256":"4a8f9c010bee9888753cc016b1104606d64632ebc0954d65bd6f4ba0d81fee67"}}