{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:J7XBCZLSFOR7RXNAAAFLP5XXYP","short_pith_number":"pith:J7XBCZLS","canonical_record":{"source":{"id":"1507.02979","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-10T18:13:36Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"e0b78acb0b4d2ed2c0568d2de69291fd9a3924c17347007b629b4c8f6119bb67","abstract_canon_sha256":"53425bc7b298d264845267102689381506239d4c6d8ca4321c6c0bb9eeda9ea8"},"schema_version":"1.0"},"canonical_sha256":"4fee1165722ba3f8dda0000ab7f6f7c3d805e8cfa85307d020a4c62611c69d4e","source":{"kind":"arxiv","id":"1507.02979","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.02979","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"arxiv_version","alias_value":"1507.02979v2","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.02979","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"pith_short_12","alias_value":"J7XBCZLSFOR7","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"J7XBCZLSFOR7RXNA","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"J7XBCZLS","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:J7XBCZLSFOR7RXNAAAFLP5XXYP","target":"record","payload":{"canonical_record":{"source":{"id":"1507.02979","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-10T18:13:36Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"e0b78acb0b4d2ed2c0568d2de69291fd9a3924c17347007b629b4c8f6119bb67","abstract_canon_sha256":"53425bc7b298d264845267102689381506239d4c6d8ca4321c6c0bb9eeda9ea8"},"schema_version":"1.0"},"canonical_sha256":"4fee1165722ba3f8dda0000ab7f6f7c3d805e8cfa85307d020a4c62611c69d4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:58.175715Z","signature_b64":"mUMqyahXhwLsMNTSqFgZdCNcxTv7tBidFQ0m4EzJB7KcnPIWJe74cVFVWsXu/Wuq3ShyoQYLTXadmY9i79xJCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4fee1165722ba3f8dda0000ab7f6f7c3d805e8cfa85307d020a4c62611c69d4e","last_reissued_at":"2026-05-18T01:30:58.175148Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:58.175148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.02979","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":"2026-05-18T01:30:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7I/wr3tCMB4Slq9/WnBnH8G6BxLqRhbfpCNxl/aIRN0eVjoEJZPFc1tt9as2eDOn54Lf15SkfdrsQURrX9sNDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T23:11:47.245191Z"},"content_sha256":"2e54b3a758885a9e691308ced58889e602c9ff156b7dd424e332fa61d4cd903a","schema_version":"1.0","event_id":"sha256:2e54b3a758885a9e691308ced58889e602c9ff156b7dd424e332fa61d4cd903a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:J7XBCZLSFOR7RXNAAAFLP5XXYP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of photo-thermal feed-back in a stable dual-carrier optical spring","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"physics.optics","authors_text":"Antonio Perreca, David Kelley, Fabian Manga\\~na-Sandoval, James Lough, Stefan W. Ballmer","submitted_at":"2015-07-10T18:13:36Z","abstract_excerpt":"We report on the observation of photo-thermal feed-back in a stable dual-carrier optical spring. The optical spring is realized in a 7 cm Fabry-Perot cavity comprised of a suspended 0.4 g small end mirror and a heavy input coupler, illuminated by two optical fields. The frequency, damping and stability of the optical spring resonance can be tuned by adjusting the power and detuning of the two optical fields, allowing for a precise measurement of the absorption-induced photo-thermal feedback. The magnitude and frequency dependence of the observed photo-thermal effect are consistent with predict"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.02979","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":"2026-05-18T01:30:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vf5gqlwSdSbPSC84YgHDcazuPSdHk+p00bjjJOBbPGQibx0NocCHdwJaIpVDG/MSQhPzNOGkjZCVzRZM/kLkBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T23:11:47.245563Z"},"content_sha256":"c3ca6d7c3591b7f57ad4fa11733eb26e64c169d92f1447af98194678cfec7e5f","schema_version":"1.0","event_id":"sha256:c3ca6d7c3591b7f57ad4fa11733eb26e64c169d92f1447af98194678cfec7e5f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J7XBCZLSFOR7RXNAAAFLP5XXYP/bundle.json","state_url":"https://pith.science/pith/J7XBCZLSFOR7RXNAAAFLP5XXYP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J7XBCZLSFOR7RXNAAAFLP5XXYP/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":"2026-06-03T23:11:47Z","links":{"resolver":"https://pith.science/pith/J7XBCZLSFOR7RXNAAAFLP5XXYP","bundle":"https://pith.science/pith/J7XBCZLSFOR7RXNAAAFLP5XXYP/bundle.json","state":"https://pith.science/pith/J7XBCZLSFOR7RXNAAAFLP5XXYP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J7XBCZLSFOR7RXNAAAFLP5XXYP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:J7XBCZLSFOR7RXNAAAFLP5XXYP","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":"53425bc7b298d264845267102689381506239d4c6d8ca4321c6c0bb9eeda9ea8","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-10T18:13:36Z","title_canon_sha256":"e0b78acb0b4d2ed2c0568d2de69291fd9a3924c17347007b629b4c8f6119bb67"},"schema_version":"1.0","source":{"id":"1507.02979","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.02979","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"arxiv_version","alias_value":"1507.02979v2","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.02979","created_at":"2026-05-18T01:30:58Z"},{"alias_kind":"pith_short_12","alias_value":"J7XBCZLSFOR7","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"J7XBCZLSFOR7RXNA","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"J7XBCZLS","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:c3ca6d7c3591b7f57ad4fa11733eb26e64c169d92f1447af98194678cfec7e5f","target":"graph","created_at":"2026-05-18T01:30:58Z","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 report on the observation of photo-thermal feed-back in a stable dual-carrier optical spring. The optical spring is realized in a 7 cm Fabry-Perot cavity comprised of a suspended 0.4 g small end mirror and a heavy input coupler, illuminated by two optical fields. The frequency, damping and stability of the optical spring resonance can be tuned by adjusting the power and detuning of the two optical fields, allowing for a precise measurement of the absorption-induced photo-thermal feedback. The magnitude and frequency dependence of the observed photo-thermal effect are consistent with predict","authors_text":"Antonio Perreca, David Kelley, Fabian Manga\\~na-Sandoval, James Lough, Stefan W. Ballmer","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-10T18:13:36Z","title":"Observation of photo-thermal feed-back in a stable dual-carrier optical spring"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.02979","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":"sha256:2e54b3a758885a9e691308ced58889e602c9ff156b7dd424e332fa61d4cd903a","target":"record","created_at":"2026-05-18T01:30:58Z","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":"53425bc7b298d264845267102689381506239d4c6d8ca4321c6c0bb9eeda9ea8","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-07-10T18:13:36Z","title_canon_sha256":"e0b78acb0b4d2ed2c0568d2de69291fd9a3924c17347007b629b4c8f6119bb67"},"schema_version":"1.0","source":{"id":"1507.02979","kind":"arxiv","version":2}},"canonical_sha256":"4fee1165722ba3f8dda0000ab7f6f7c3d805e8cfa85307d020a4c62611c69d4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4fee1165722ba3f8dda0000ab7f6f7c3d805e8cfa85307d020a4c62611c69d4e","first_computed_at":"2026-05-18T01:30:58.175148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:58.175148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mUMqyahXhwLsMNTSqFgZdCNcxTv7tBidFQ0m4EzJB7KcnPIWJe74cVFVWsXu/Wuq3ShyoQYLTXadmY9i79xJCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:58.175715Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.02979","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e54b3a758885a9e691308ced58889e602c9ff156b7dd424e332fa61d4cd903a","sha256:c3ca6d7c3591b7f57ad4fa11733eb26e64c169d92f1447af98194678cfec7e5f"],"state_sha256":"f7826f73a81a441103257fd7e6dfeb0bb51755c38bfdb4d3b4bbe468349d76e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4mLQbRZki4gXJFhljdWKAmOcUmJuflWVSlwWcP/yky9d/0JhQXISD1h6roqi915RUhiqjHAEMZAue2ckUX60Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T23:11:47.247496Z","bundle_sha256":"66f8feff93a3ad011e735952c634216bd4cbb00b3dfa519a24c1b722ba136834"}}