{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:S2VQOVOX52MS5OH5YDNI6ZNNS3","short_pith_number":"pith:S2VQOVOX","canonical_record":{"source":{"id":"1509.05840","kind":"arxiv","version":7},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-19T01:58:54Z","cross_cats_sorted":[],"title_canon_sha256":"a389eb1b35c978efb62dbca5a724723f59ac77125a6cf006342c738c0ef92bc3","abstract_canon_sha256":"5c38ae156cd4fa5c66844c7d9050358b595231164837bd498409363afa05be8f"},"schema_version":"1.0"},"canonical_sha256":"96ab0755d7ee992eb8fdc0da8f65ad96f89f7a98127dd77052d7cf4931fe7405","source":{"kind":"arxiv","id":"1509.05840","version":7},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.05840","created_at":"2026-05-18T01:19:40Z"},{"alias_kind":"arxiv_version","alias_value":"1509.05840v7","created_at":"2026-05-18T01:19:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.05840","created_at":"2026-05-18T01:19:40Z"},{"alias_kind":"pith_short_12","alias_value":"S2VQOVOX52MS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"S2VQOVOX52MS5OH5","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"S2VQOVOX","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:S2VQOVOX52MS5OH5YDNI6ZNNS3","target":"record","payload":{"canonical_record":{"source":{"id":"1509.05840","kind":"arxiv","version":7},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-19T01:58:54Z","cross_cats_sorted":[],"title_canon_sha256":"a389eb1b35c978efb62dbca5a724723f59ac77125a6cf006342c738c0ef92bc3","abstract_canon_sha256":"5c38ae156cd4fa5c66844c7d9050358b595231164837bd498409363afa05be8f"},"schema_version":"1.0"},"canonical_sha256":"96ab0755d7ee992eb8fdc0da8f65ad96f89f7a98127dd77052d7cf4931fe7405","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:40.652101Z","signature_b64":"dYqel2nLcV+JAE6PrrNGhFsCjebSNwtXGDamIOdAC0qVKLV5VVcWySTt0TTg6IViUxkd5413m35Oo/oRthGLDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96ab0755d7ee992eb8fdc0da8f65ad96f89f7a98127dd77052d7cf4931fe7405","last_reissued_at":"2026-05-18T01:19:40.651386Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:40.651386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.05840","source_version":7,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:19:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gUbRPyxkMes8eVaJqyleUWLiGdNtwPIXcE3Kxav/hay/Dv4jP8qVmhRQtv82WC9euBQC+SlP1AEIdU0vm513DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T23:59:41.960239Z"},"content_sha256":"a90fd46c6ed79f8933d0405d96747c2fa418eb2b8c0026406eeddd66bf1afa20","schema_version":"1.0","event_id":"sha256:a90fd46c6ed79f8933d0405d96747c2fa418eb2b8c0026406eeddd66bf1afa20"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:S2VQOVOX52MS5OH5YDNI6ZNNS3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Feedback-free optical cavity with self-resonating mechanism","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"A. Kosuge, J. Urakawa, K. Sakaue, M. Washio, T. Omori, T. Takahashi, Y. Honda, Y. Hosaka, Y. Uesugi","submitted_at":"2015-09-19T01:58:54Z","abstract_excerpt":"We demonstrated the operation of a high finesse optical cavity without utilizing an active feedback system to stabilize the resonance. The effective finesse, which is a finesse including the overall system performance, of the cavity was measured to be $394,000 \\pm 10,000$, and the laser power stored in the cavity was $2.52 \\pm 0.13$ kW, which is approximately 187,000 times greater than the incident power to the cavity. The stored power was stabilized with a fluctuation of $1.7 \\%$, and we confirmed continuous cavity operation for more than two hours. This result has the potential to trigger an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.05840","kind":"arxiv","version":7},"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":"2026-05-18T01:19:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AU5nv4XfDwXeWNJvZeg/pAPlTFI3lZ15M70o+klfutwF7v1N7DiUr4fjJ3tupXrXOqTJou7gD0tZ0zPS5DOZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T23:59:41.960597Z"},"content_sha256":"05be17e8424dd02994f0f25bb44bd74427c04b01181a288fab29297be6c65928","schema_version":"1.0","event_id":"sha256:05be17e8424dd02994f0f25bb44bd74427c04b01181a288fab29297be6c65928"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S2VQOVOX52MS5OH5YDNI6ZNNS3/bundle.json","state_url":"https://pith.science/pith/S2VQOVOX52MS5OH5YDNI6ZNNS3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S2VQOVOX52MS5OH5YDNI6ZNNS3/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":"2026-06-27T23:59:41Z","links":{"resolver":"https://pith.science/pith/S2VQOVOX52MS5OH5YDNI6ZNNS3","bundle":"https://pith.science/pith/S2VQOVOX52MS5OH5YDNI6ZNNS3/bundle.json","state":"https://pith.science/pith/S2VQOVOX52MS5OH5YDNI6ZNNS3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S2VQOVOX52MS5OH5YDNI6ZNNS3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:S2VQOVOX52MS5OH5YDNI6ZNNS3","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":"5c38ae156cd4fa5c66844c7d9050358b595231164837bd498409363afa05be8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-19T01:58:54Z","title_canon_sha256":"a389eb1b35c978efb62dbca5a724723f59ac77125a6cf006342c738c0ef92bc3"},"schema_version":"1.0","source":{"id":"1509.05840","kind":"arxiv","version":7}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.05840","created_at":"2026-05-18T01:19:40Z"},{"alias_kind":"arxiv_version","alias_value":"1509.05840v7","created_at":"2026-05-18T01:19:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.05840","created_at":"2026-05-18T01:19:40Z"},{"alias_kind":"pith_short_12","alias_value":"S2VQOVOX52MS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"S2VQOVOX52MS5OH5","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"S2VQOVOX","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:05be17e8424dd02994f0f25bb44bd74427c04b01181a288fab29297be6c65928","target":"graph","created_at":"2026-05-18T01:19:40Z","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 demonstrated the operation of a high finesse optical cavity without utilizing an active feedback system to stabilize the resonance. The effective finesse, which is a finesse including the overall system performance, of the cavity was measured to be $394,000 \\pm 10,000$, and the laser power stored in the cavity was $2.52 \\pm 0.13$ kW, which is approximately 187,000 times greater than the incident power to the cavity. The stored power was stabilized with a fluctuation of $1.7 \\%$, and we confirmed continuous cavity operation for more than two hours. This result has the potential to trigger an","authors_text":"A. Kosuge, J. Urakawa, K. Sakaue, M. Washio, T. Omori, T. Takahashi, Y. Honda, Y. Hosaka, Y. Uesugi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-19T01:58:54Z","title":"Feedback-free optical cavity with self-resonating mechanism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.05840","kind":"arxiv","version":7},"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:a90fd46c6ed79f8933d0405d96747c2fa418eb2b8c0026406eeddd66bf1afa20","target":"record","created_at":"2026-05-18T01:19:40Z","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":"5c38ae156cd4fa5c66844c7d9050358b595231164837bd498409363afa05be8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-09-19T01:58:54Z","title_canon_sha256":"a389eb1b35c978efb62dbca5a724723f59ac77125a6cf006342c738c0ef92bc3"},"schema_version":"1.0","source":{"id":"1509.05840","kind":"arxiv","version":7}},"canonical_sha256":"96ab0755d7ee992eb8fdc0da8f65ad96f89f7a98127dd77052d7cf4931fe7405","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96ab0755d7ee992eb8fdc0da8f65ad96f89f7a98127dd77052d7cf4931fe7405","first_computed_at":"2026-05-18T01:19:40.651386Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:40.651386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dYqel2nLcV+JAE6PrrNGhFsCjebSNwtXGDamIOdAC0qVKLV5VVcWySTt0TTg6IViUxkd5413m35Oo/oRthGLDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:40.652101Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.05840","source_kind":"arxiv","source_version":7}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a90fd46c6ed79f8933d0405d96747c2fa418eb2b8c0026406eeddd66bf1afa20","sha256:05be17e8424dd02994f0f25bb44bd74427c04b01181a288fab29297be6c65928"],"state_sha256":"8e5110d5c9f1e14bcbfd37d32f2278dc100c44dbdadfb7b7696a4c8992cc0762"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"96tsBjgI1VvEfc8eOJKNOXGrsyX0kAsXIxDihPI4Rrb2N1qQGGbudLvWq45j/1X2CfkDj+osuUD7Si0A2K4kBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T23:59:41.962539Z","bundle_sha256":"f7b28ecc9c7d5468460b4e512a0a2a6ed7cea69319c9ac64879fbe83586b5019"}}