{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GFTWEJX3PZEIY7NHSULHYFSDY3","short_pith_number":"pith:GFTWEJX3","canonical_record":{"source":{"id":"1701.04212","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T09:26:21Z","cross_cats_sorted":[],"title_canon_sha256":"b522e2db05c63c25bb68ce5e77b529f5f63059a6164c832ebf45db610bce48ec","abstract_canon_sha256":"ac695460a1bf7666b51864fa803e07138d76451098eb1be58407c9fa96fe416f"},"schema_version":"1.0"},"canonical_sha256":"31676226fb7e488c7da795167c1643c6e1386ec2305452808741a07b8e35ad58","source":{"kind":"arxiv","id":"1701.04212","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04212","created_at":"2026-05-18T00:47:04Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04212v2","created_at":"2026-05-18T00:47:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04212","created_at":"2026-05-18T00:47:04Z"},{"alias_kind":"pith_short_12","alias_value":"GFTWEJX3PZEI","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GFTWEJX3PZEIY7NH","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GFTWEJX3","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GFTWEJX3PZEIY7NHSULHYFSDY3","target":"record","payload":{"canonical_record":{"source":{"id":"1701.04212","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T09:26:21Z","cross_cats_sorted":[],"title_canon_sha256":"b522e2db05c63c25bb68ce5e77b529f5f63059a6164c832ebf45db610bce48ec","abstract_canon_sha256":"ac695460a1bf7666b51864fa803e07138d76451098eb1be58407c9fa96fe416f"},"schema_version":"1.0"},"canonical_sha256":"31676226fb7e488c7da795167c1643c6e1386ec2305452808741a07b8e35ad58","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:47:04.466382Z","signature_b64":"JxiZOQR3XXK6pyp3vr/ELS5TIHwTgzUf5IYazGV5AY3VOigRLtE8X6NGBfLupZiODeNKQA4W5Io+n/ZItqljBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"31676226fb7e488c7da795167c1643c6e1386ec2305452808741a07b8e35ad58","last_reissued_at":"2026-05-18T00:47:04.465912Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:47:04.465912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.04212","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":"2026-05-18T00:47:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6TYPMqNGhK9wPE960LFOzIZuRgyUl718RgcAJl9FV9RHUHFQNgFB83OHQQdX7yvqttmfr/1V3qXTNgsYGqSjDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:01:50.720273Z"},"content_sha256":"b182719b8f5abeafffea6b7853e9b360deef8f9e2d5caa95820fdb1e4d07c193","schema_version":"1.0","event_id":"sha256:b182719b8f5abeafffea6b7853e9b360deef8f9e2d5caa95820fdb1e4d07c193"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GFTWEJX3PZEIY7NHSULHYFSDY3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Q nested resonator in an actively stabilized optomechanical cavity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Dirk Bouwmeester, Fernando Luna, Frank M. Buters, Hedwig J. Eerkens, Kier Heeck, Matthew J. Weaver, Sven de Man","submitted_at":"2017-01-16T09:26:21Z","abstract_excerpt":"Experiments involving micro- and nanomechanical resonators need to be carefully designed to reduce mechanical environmental noise. A small scale on-chip approach is to add an additional resonator to the system as a mechanical low-pass filter. Unfortunately, the inherent low frequency of the low-pass filter causes the system to be easily excited mechanically. Fixating the additional resonator ensures that the resonator itself can not be excited by the environment. This, however, negates the purpose of the low-pass filter. We solve this apparent paradox by applying active feedback to the resonat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04212","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":"2026-05-18T00:47:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CeQ4pxgGYgQBrdWqrJ0aZ9lCAE4sNj+kpHFuxGURugHcSRRxIRLlLnAk6hTpcIyF7YTpP0dJ1ArQnv1gTpu+Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T17:01:50.721186Z"},"content_sha256":"ef529b1f4957b5cd4b5245456789c479cf1d7819c9b26979222c13125d6ab1f1","schema_version":"1.0","event_id":"sha256:ef529b1f4957b5cd4b5245456789c479cf1d7819c9b26979222c13125d6ab1f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GFTWEJX3PZEIY7NHSULHYFSDY3/bundle.json","state_url":"https://pith.science/pith/GFTWEJX3PZEIY7NHSULHYFSDY3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GFTWEJX3PZEIY7NHSULHYFSDY3/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":"2026-06-07T17:01:50Z","links":{"resolver":"https://pith.science/pith/GFTWEJX3PZEIY7NHSULHYFSDY3","bundle":"https://pith.science/pith/GFTWEJX3PZEIY7NHSULHYFSDY3/bundle.json","state":"https://pith.science/pith/GFTWEJX3PZEIY7NHSULHYFSDY3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GFTWEJX3PZEIY7NHSULHYFSDY3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GFTWEJX3PZEIY7NHSULHYFSDY3","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":"ac695460a1bf7666b51864fa803e07138d76451098eb1be58407c9fa96fe416f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T09:26:21Z","title_canon_sha256":"b522e2db05c63c25bb68ce5e77b529f5f63059a6164c832ebf45db610bce48ec"},"schema_version":"1.0","source":{"id":"1701.04212","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04212","created_at":"2026-05-18T00:47:04Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04212v2","created_at":"2026-05-18T00:47:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04212","created_at":"2026-05-18T00:47:04Z"},{"alias_kind":"pith_short_12","alias_value":"GFTWEJX3PZEI","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GFTWEJX3PZEIY7NH","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GFTWEJX3","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:ef529b1f4957b5cd4b5245456789c479cf1d7819c9b26979222c13125d6ab1f1","target":"graph","created_at":"2026-05-18T00:47:04Z","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":"Experiments involving micro- and nanomechanical resonators need to be carefully designed to reduce mechanical environmental noise. A small scale on-chip approach is to add an additional resonator to the system as a mechanical low-pass filter. Unfortunately, the inherent low frequency of the low-pass filter causes the system to be easily excited mechanically. Fixating the additional resonator ensures that the resonator itself can not be excited by the environment. This, however, negates the purpose of the low-pass filter. We solve this apparent paradox by applying active feedback to the resonat","authors_text":"Dirk Bouwmeester, Fernando Luna, Frank M. Buters, Hedwig J. Eerkens, Kier Heeck, Matthew J. Weaver, Sven de Man","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T09:26:21Z","title":"High-Q nested resonator in an actively stabilized optomechanical cavity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04212","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:b182719b8f5abeafffea6b7853e9b360deef8f9e2d5caa95820fdb1e4d07c193","target":"record","created_at":"2026-05-18T00:47:04Z","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":"ac695460a1bf7666b51864fa803e07138d76451098eb1be58407c9fa96fe416f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-01-16T09:26:21Z","title_canon_sha256":"b522e2db05c63c25bb68ce5e77b529f5f63059a6164c832ebf45db610bce48ec"},"schema_version":"1.0","source":{"id":"1701.04212","kind":"arxiv","version":2}},"canonical_sha256":"31676226fb7e488c7da795167c1643c6e1386ec2305452808741a07b8e35ad58","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31676226fb7e488c7da795167c1643c6e1386ec2305452808741a07b8e35ad58","first_computed_at":"2026-05-18T00:47:04.465912Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:04.465912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JxiZOQR3XXK6pyp3vr/ELS5TIHwTgzUf5IYazGV5AY3VOigRLtE8X6NGBfLupZiODeNKQA4W5Io+n/ZItqljBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:04.466382Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.04212","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b182719b8f5abeafffea6b7853e9b360deef8f9e2d5caa95820fdb1e4d07c193","sha256:ef529b1f4957b5cd4b5245456789c479cf1d7819c9b26979222c13125d6ab1f1"],"state_sha256":"5abaa99246e316bd481b411c638293cbaf929808a758bfc193adeb8ffd1a1493"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GSzdNK7IHwxo3i+eJyhp6xbsK7MMnOWio5Xdb3GyB6hkekeXUZ9JXLjBPHKAvc83abYz2+5oPPWqGFshv/avDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T17:01:50.724802Z","bundle_sha256":"a1752bbc011e3414c0980bbc83a4d4bcf27901f47411de4aea0347df95ceecb0"}}