{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:PGATUSJX35TZZDAVTEIYP7OT5C","short_pith_number":"pith:PGATUSJX","canonical_record":{"source":{"id":"1901.04129","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-14T04:56:23Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"653d4af8128db99aa2e47ce1da45a0a95b11defed31d5ccca20c746d897715e0","abstract_canon_sha256":"9ecd656c43b8e9ba00c3b1cbe017791e7a88f67300b558cd263a1fd9866775e9"},"schema_version":"1.0"},"canonical_sha256":"79813a4937df679c8c15991187fdd3e889323364f1a1c884165be5e5829a28e3","source":{"kind":"arxiv","id":"1901.04129","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04129","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04129v1","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04129","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"pith_short_12","alias_value":"PGATUSJX35TZ","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"pith_short_16","alias_value":"PGATUSJX35TZZDAV","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"pith_short_8","alias_value":"PGATUSJX","created_at":"2026-07-05T02:02:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:PGATUSJX35TZZDAVTEIYP7OT5C","target":"record","payload":{"canonical_record":{"source":{"id":"1901.04129","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-14T04:56:23Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"653d4af8128db99aa2e47ce1da45a0a95b11defed31d5ccca20c746d897715e0","abstract_canon_sha256":"9ecd656c43b8e9ba00c3b1cbe017791e7a88f67300b558cd263a1fd9866775e9"},"schema_version":"1.0"},"canonical_sha256":"79813a4937df679c8c15991187fdd3e889323364f1a1c884165be5e5829a28e3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:02:00.083994Z","signature_b64":"PhfHcDHvuetTWjd//gS1OjPbbasuHWbbbMW6LygUO8R2gdYPgFFUHwo2j6/bGs3nclgBKyj18nL8W4GZASjNCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"79813a4937df679c8c15991187fdd3e889323364f1a1c884165be5e5829a28e3","last_reissued_at":"2026-07-05T02:02:00.083538Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:02:00.083538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.04129","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":"2026-07-05T02:02:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GN/QyCNNe1OMfA+Q7csDzQXj79w9HGf35bMudw1VPlpe4JTryVN5J033O+ij9KjYVln5eRWwwMH0ljnH0flqDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:59:38.777593Z"},"content_sha256":"1f8b87d0f62c5a74f455f99604887c63d906b219e68a937bab5069d453efbf1a","schema_version":"1.0","event_id":"sha256:1f8b87d0f62c5a74f455f99604887c63d906b219e68a937bab5069d453efbf1a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:PGATUSJX35TZZDAVTEIYP7OT5C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phononic bandgap nano-acoustic cavity with ultralong phonon lifetime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alp Sipahigil, Gregory S. MacCabe, Hengjiang Ren, Hengyun Zhou, Jie Luo, Justin D. Cohen, Mohammad Mirhosseini, Oskar Painter","submitted_at":"2019-01-14T04:56:23Z","abstract_excerpt":"We present measurements at millikelvin temperatures of the microwave-frequency acoustic properties of a crystalline silicon nanobeam cavity incorporating a phononic bandgap clamping structure for acoustic confinement. Utilizing pulsed laser light to excite a co-localized optical mode of the nanobeam cavity, we measure the dynamics of cavity acoustic modes with single-phonon sensitivity. Energy ringdown measurements for the fundamental $5$~GHz acoustic mode of the cavity shows an exponential increase in phonon lifetime versus number of periods in the phononic bandgap shield, increasing up to $\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04129","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/1901.04129/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":"2026-07-05T02:02:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ONQjbFdXxaXs9jAq32CXSvBXShOSIooEKiCq1nn6J/fc3j0HlSv/3gxLknK7yC7JvDTtcfi8PA6Gtgl4+rWMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T22:59:38.778092Z"},"content_sha256":"86329a83db110eb4b5764b991f16619c42cc45b7c0391102c45c0bbeec28d1a2","schema_version":"1.0","event_id":"sha256:86329a83db110eb4b5764b991f16619c42cc45b7c0391102c45c0bbeec28d1a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PGATUSJX35TZZDAVTEIYP7OT5C/bundle.json","state_url":"https://pith.science/pith/PGATUSJX35TZZDAVTEIYP7OT5C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PGATUSJX35TZZDAVTEIYP7OT5C/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":"2026-08-23T22:59:38Z","links":{"resolver":"https://pith.science/pith/PGATUSJX35TZZDAVTEIYP7OT5C","bundle":"https://pith.science/pith/PGATUSJX35TZZDAVTEIYP7OT5C/bundle.json","state":"https://pith.science/pith/PGATUSJX35TZZDAVTEIYP7OT5C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PGATUSJX35TZZDAVTEIYP7OT5C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:PGATUSJX35TZZDAVTEIYP7OT5C","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":"9ecd656c43b8e9ba00c3b1cbe017791e7a88f67300b558cd263a1fd9866775e9","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-14T04:56:23Z","title_canon_sha256":"653d4af8128db99aa2e47ce1da45a0a95b11defed31d5ccca20c746d897715e0"},"schema_version":"1.0","source":{"id":"1901.04129","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04129","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04129v1","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04129","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"pith_short_12","alias_value":"PGATUSJX35TZ","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"pith_short_16","alias_value":"PGATUSJX35TZZDAV","created_at":"2026-07-05T02:02:00Z"},{"alias_kind":"pith_short_8","alias_value":"PGATUSJX","created_at":"2026-07-05T02:02:00Z"}],"graph_snapshots":[{"event_id":"sha256:86329a83db110eb4b5764b991f16619c42cc45b7c0391102c45c0bbeec28d1a2","target":"graph","created_at":"2026-07-05T02:02:00Z","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/1901.04129/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present measurements at millikelvin temperatures of the microwave-frequency acoustic properties of a crystalline silicon nanobeam cavity incorporating a phononic bandgap clamping structure for acoustic confinement. Utilizing pulsed laser light to excite a co-localized optical mode of the nanobeam cavity, we measure the dynamics of cavity acoustic modes with single-phonon sensitivity. Energy ringdown measurements for the fundamental $5$~GHz acoustic mode of the cavity shows an exponential increase in phonon lifetime versus number of periods in the phononic bandgap shield, increasing up to $\\","authors_text":"Alp Sipahigil, Gregory S. MacCabe, Hengjiang Ren, Hengyun Zhou, Jie Luo, Justin D. Cohen, Mohammad Mirhosseini, Oskar Painter","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-14T04:56:23Z","title":"Phononic bandgap nano-acoustic cavity with ultralong phonon lifetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04129","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":"sha256:1f8b87d0f62c5a74f455f99604887c63d906b219e68a937bab5069d453efbf1a","target":"record","created_at":"2026-07-05T02:02:00Z","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":"9ecd656c43b8e9ba00c3b1cbe017791e7a88f67300b558cd263a1fd9866775e9","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-01-14T04:56:23Z","title_canon_sha256":"653d4af8128db99aa2e47ce1da45a0a95b11defed31d5ccca20c746d897715e0"},"schema_version":"1.0","source":{"id":"1901.04129","kind":"arxiv","version":1}},"canonical_sha256":"79813a4937df679c8c15991187fdd3e889323364f1a1c884165be5e5829a28e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79813a4937df679c8c15991187fdd3e889323364f1a1c884165be5e5829a28e3","first_computed_at":"2026-07-05T02:02:00.083538Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:02:00.083538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PhfHcDHvuetTWjd//gS1OjPbbasuHWbbbMW6LygUO8R2gdYPgFFUHwo2j6/bGs3nclgBKyj18nL8W4GZASjNCw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:02:00.083994Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.04129","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f8b87d0f62c5a74f455f99604887c63d906b219e68a937bab5069d453efbf1a","sha256:86329a83db110eb4b5764b991f16619c42cc45b7c0391102c45c0bbeec28d1a2"],"state_sha256":"88f4f85c8436e96648a322940862b5f404b8ad7b3817009a67c3dadbad92bc10"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kFrQBC8TrMuZk7PreQgsr+ZLd8vYAm0IVmJ6VBXtaYOUQX4xx79b/3Smla+6d3Bl8ZRLcOuhblf0d9uxAYa3DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T22:59:38.782644Z","bundle_sha256":"fa9c8800ae9a7abde0eec0fa0e0b57d0a55e8786b0087771d3569d27e657c73c"}}