{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QMRAFG4YN4OXX2OBU4ZLL6MIG6","short_pith_number":"pith:QMRAFG4Y","canonical_record":{"source":{"id":"2207.07358","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-15T09:14:29Z","cross_cats_sorted":[],"title_canon_sha256":"d15d30c679d64076a67e74e26490ac6a0cc9537fc36e4f662eddaa58632c1017","abstract_canon_sha256":"6d61c828e3b4d9866e90fcf4af90136a8841fdb5ec07aeb6c79af5915dc18567"},"schema_version":"1.0"},"canonical_sha256":"8322029b986f1d7be9c1a732b5f988379fb6bedb430529dff19e7d46f5cea29f","source":{"kind":"arxiv","id":"2207.07358","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07358","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07358v1","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07358","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_12","alias_value":"QMRAFG4YN4OX","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_16","alias_value":"QMRAFG4YN4OXX2OB","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_8","alias_value":"QMRAFG4Y","created_at":"2026-07-05T04:40:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QMRAFG4YN4OXX2OBU4ZLL6MIG6","target":"record","payload":{"canonical_record":{"source":{"id":"2207.07358","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-15T09:14:29Z","cross_cats_sorted":[],"title_canon_sha256":"d15d30c679d64076a67e74e26490ac6a0cc9537fc36e4f662eddaa58632c1017","abstract_canon_sha256":"6d61c828e3b4d9866e90fcf4af90136a8841fdb5ec07aeb6c79af5915dc18567"},"schema_version":"1.0"},"canonical_sha256":"8322029b986f1d7be9c1a732b5f988379fb6bedb430529dff19e7d46f5cea29f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:40:31.612218Z","signature_b64":"9iSi9sMLcAoJwAWGDEeSBG5gwvZPrh4Uxery8Z6y1Tw2U9uLUrNHkB+PKxqqaxLkqjUYMqg0Zr05Hbli+587DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8322029b986f1d7be9c1a732b5f988379fb6bedb430529dff19e7d46f5cea29f","last_reissued_at":"2026-07-05T04:40:31.611790Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:40:31.611790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.07358","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":"2026-07-05T04:40:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YFQWsg2piDWzyyzjgBMRWso2gy/LE+O0V6LFUViElxFNYEPeiDiHU9VL0VethhsXI9C+9Sf6EEMHM6UHDMfdCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:37:43.407023Z"},"content_sha256":"b37248aef14445851a27f584b64f789d94b82b8dd0635e397df609f273ffd7d6","schema_version":"1.0","event_id":"sha256:b37248aef14445851a27f584b64f789d94b82b8dd0635e397df609f273ffd7d6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QMRAFG4YN4OXX2OBU4ZLL6MIG6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Parallel measurements of vibrational modes in a few-layer graphene nanomechanical resonator using software-defined radio dongles","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Ce Zhang, Chen Yang, FengNan Chen, Heng Lu, Joel Moser, Jue Wang, Ye Tian, Ying Yan, Yubin Zhang","submitted_at":"2022-07-15T09:14:29Z","abstract_excerpt":"Software-defined radio dongles are small and inexpensive receivers well known to amateur radio enthusiasts. When connected to an antenna, they enable monitoring of a wide range of the radio spectrum by conditioning the input signal and transferring a downconverted version of it to a personal computer for software processing. Here, we employ a composite of two such dongles, interfaced with codes written in MATLAB and GNU Radio, as a measuring instrument to study the flexural vibrations of a few-layer graphene nanomechanical resonator. Instead of an antenna, we connect the dongles to the split o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07358","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/2207.07358/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":"2026-07-05T04:40:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"whunXqYqHq032thGdX8wPXFuVifsv4FgC4NLqKhJsSzFCX9pR/T6rMqPZQhLJlGljPvp76sDVpVY1mQx9jruBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:37:43.407513Z"},"content_sha256":"99e1ce88eacf742a22c3c7c2b9042485b47d049be400c084fecd6ea4095d6d64","schema_version":"1.0","event_id":"sha256:99e1ce88eacf742a22c3c7c2b9042485b47d049be400c084fecd6ea4095d6d64"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QMRAFG4YN4OXX2OBU4ZLL6MIG6/bundle.json","state_url":"https://pith.science/pith/QMRAFG4YN4OXX2OBU4ZLL6MIG6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QMRAFG4YN4OXX2OBU4ZLL6MIG6/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":"2026-08-07T07:37:43Z","links":{"resolver":"https://pith.science/pith/QMRAFG4YN4OXX2OBU4ZLL6MIG6","bundle":"https://pith.science/pith/QMRAFG4YN4OXX2OBU4ZLL6MIG6/bundle.json","state":"https://pith.science/pith/QMRAFG4YN4OXX2OBU4ZLL6MIG6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QMRAFG4YN4OXX2OBU4ZLL6MIG6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QMRAFG4YN4OXX2OBU4ZLL6MIG6","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":"6d61c828e3b4d9866e90fcf4af90136a8841fdb5ec07aeb6c79af5915dc18567","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-15T09:14:29Z","title_canon_sha256":"d15d30c679d64076a67e74e26490ac6a0cc9537fc36e4f662eddaa58632c1017"},"schema_version":"1.0","source":{"id":"2207.07358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07358","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07358v1","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07358","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_12","alias_value":"QMRAFG4YN4OX","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_16","alias_value":"QMRAFG4YN4OXX2OB","created_at":"2026-07-05T04:40:31Z"},{"alias_kind":"pith_short_8","alias_value":"QMRAFG4Y","created_at":"2026-07-05T04:40:31Z"}],"graph_snapshots":[{"event_id":"sha256:99e1ce88eacf742a22c3c7c2b9042485b47d049be400c084fecd6ea4095d6d64","target":"graph","created_at":"2026-07-05T04:40:31Z","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/2207.07358/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Software-defined radio dongles are small and inexpensive receivers well known to amateur radio enthusiasts. When connected to an antenna, they enable monitoring of a wide range of the radio spectrum by conditioning the input signal and transferring a downconverted version of it to a personal computer for software processing. Here, we employ a composite of two such dongles, interfaced with codes written in MATLAB and GNU Radio, as a measuring instrument to study the flexural vibrations of a few-layer graphene nanomechanical resonator. Instead of an antenna, we connect the dongles to the split o","authors_text":"Ce Zhang, Chen Yang, FengNan Chen, Heng Lu, Joel Moser, Jue Wang, Ye Tian, Ying Yan, Yubin Zhang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-15T09:14:29Z","title":"Parallel measurements of vibrational modes in a few-layer graphene nanomechanical resonator using software-defined radio dongles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07358","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:b37248aef14445851a27f584b64f789d94b82b8dd0635e397df609f273ffd7d6","target":"record","created_at":"2026-07-05T04:40:31Z","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":"6d61c828e3b4d9866e90fcf4af90136a8841fdb5ec07aeb6c79af5915dc18567","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-15T09:14:29Z","title_canon_sha256":"d15d30c679d64076a67e74e26490ac6a0cc9537fc36e4f662eddaa58632c1017"},"schema_version":"1.0","source":{"id":"2207.07358","kind":"arxiv","version":1}},"canonical_sha256":"8322029b986f1d7be9c1a732b5f988379fb6bedb430529dff19e7d46f5cea29f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8322029b986f1d7be9c1a732b5f988379fb6bedb430529dff19e7d46f5cea29f","first_computed_at":"2026-07-05T04:40:31.611790Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:40:31.611790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9iSi9sMLcAoJwAWGDEeSBG5gwvZPrh4Uxery8Z6y1Tw2U9uLUrNHkB+PKxqqaxLkqjUYMqg0Zr05Hbli+587DA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:40:31.612218Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.07358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b37248aef14445851a27f584b64f789d94b82b8dd0635e397df609f273ffd7d6","sha256:99e1ce88eacf742a22c3c7c2b9042485b47d049be400c084fecd6ea4095d6d64"],"state_sha256":"a0a3499640aa46db27cc78b741cf434d27e03c029c40bf507412b708ccb2d1f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jw5kvIpQwFcLLh5eMStvC4GWkrhx8wt5cl/LHEGoUD4XsgI8T9ze8CMxh3xLq3mtOn1EpGurmpjhyJvjmq1lCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T07:37:43.411172Z","bundle_sha256":"a08cdf2ab4777ce15b6e8b49452aea99db32b03fa280fd354f84b34a4151f801"}}