{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:UW26XD4WLMDNI4TKFYT6EDBXQ2","short_pith_number":"pith:UW26XD4W","canonical_record":{"source":{"id":"2508.16088","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2025-08-22T04:46:59Z","cross_cats_sorted":[],"title_canon_sha256":"c2ff83b484ab578d0ab4f87158c880f29dc7ad9679ec17f25d9528b4c076f64a","abstract_canon_sha256":"8271a866ae316bd25e07123de6d4efa7eb1702ab7e30f60d7a15ac054c50d603"},"schema_version":"1.0"},"canonical_sha256":"a5b5eb8f965b06d4726a2e27e20c37869b7e54ec4d7fe4fce6dde93a09d7312c","source":{"kind":"arxiv","id":"2508.16088","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.16088","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"arxiv_version","alias_value":"2508.16088v1","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.16088","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"pith_short_12","alias_value":"UW26XD4WLMDN","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"pith_short_16","alias_value":"UW26XD4WLMDNI4TK","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"pith_short_8","alias_value":"UW26XD4W","created_at":"2026-07-05T11:57:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:UW26XD4WLMDNI4TKFYT6EDBXQ2","target":"record","payload":{"canonical_record":{"source":{"id":"2508.16088","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2025-08-22T04:46:59Z","cross_cats_sorted":[],"title_canon_sha256":"c2ff83b484ab578d0ab4f87158c880f29dc7ad9679ec17f25d9528b4c076f64a","abstract_canon_sha256":"8271a866ae316bd25e07123de6d4efa7eb1702ab7e30f60d7a15ac054c50d603"},"schema_version":"1.0"},"canonical_sha256":"a5b5eb8f965b06d4726a2e27e20c37869b7e54ec4d7fe4fce6dde93a09d7312c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:57:41.853606Z","signature_b64":"GYy7BtHvFXkGBaZGcR1JzroJowLYuHFJjo/O/qZW+M1W+GiSl5puV1zwUSaG1FPQumZn1LCx9K9UiRLM2pBBBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5b5eb8f965b06d4726a2e27e20c37869b7e54ec4d7fe4fce6dde93a09d7312c","last_reissued_at":"2026-07-05T11:57:41.853066Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:57:41.853066Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.16088","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":"2026-07-05T11:57:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DUN9nppdglzjxYwIew51M1iw9qVr6oVEZMYEIGHDg+xPPoUgbUTGcaeK1cd010W0UZ86uQHpOPc+/cwFjncgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T02:41:30.891741Z"},"content_sha256":"7a843eb813717755e512d2289945e75cfec389e112c1108a4530b6a00fef2c54","schema_version":"1.0","event_id":"sha256:7a843eb813717755e512d2289945e75cfec389e112c1108a4530b6a00fef2c54"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:UW26XD4WLMDNI4TKFYT6EDBXQ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precision optomechanical accelerometer via hybrid test mass integration","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Benjamin J. Carey, Erick Romero, Glen I. Harris, Leo Sementilli, Margaret Wegener, Nathaniel Bawden, Nishta Arora, Poh-Meng Yeo, Victor M. Valenzuela, Warwick P. Bowen","submitted_at":"2025-08-22T04:46:59Z","abstract_excerpt":"Accelerometers offer motion sensing capabilities across a wide range of areas, enabling navigational awareness in consumer goods and defense applications, and playing a key role in monitoring and control systems. To date, on-chip accelerometers have largely utilized a single device layer or substrate as a test mass. This constrains the test mass to the dimensions and density of the device layer or substrate, ultimately limiting the sensitivity of the device. We demonstrate a new approach which utilizes a pick-and-place bonding technique to increase the test mass of an on-chip accelerometer. By"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.16088","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/2508.16088/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":"2026-07-05T11:57:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lhLhyKaysWGFSdOKQj5uCymACDtRrweiHbaQAngO/BEM0Ymt2s+NjXO21H9MBchKWOCvdtKVAuHSPP1Lt3ueDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T02:41:30.892235Z"},"content_sha256":"e4d7da674d3c8b69d5f35fd8fba7064076f5b45e776f3c7102be3462bc314b12","schema_version":"1.0","event_id":"sha256:e4d7da674d3c8b69d5f35fd8fba7064076f5b45e776f3c7102be3462bc314b12"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UW26XD4WLMDNI4TKFYT6EDBXQ2/bundle.json","state_url":"https://pith.science/pith/UW26XD4WLMDNI4TKFYT6EDBXQ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UW26XD4WLMDNI4TKFYT6EDBXQ2/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":"2026-08-15T02:41:30Z","links":{"resolver":"https://pith.science/pith/UW26XD4WLMDNI4TKFYT6EDBXQ2","bundle":"https://pith.science/pith/UW26XD4WLMDNI4TKFYT6EDBXQ2/bundle.json","state":"https://pith.science/pith/UW26XD4WLMDNI4TKFYT6EDBXQ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UW26XD4WLMDNI4TKFYT6EDBXQ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:UW26XD4WLMDNI4TKFYT6EDBXQ2","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":"8271a866ae316bd25e07123de6d4efa7eb1702ab7e30f60d7a15ac054c50d603","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2025-08-22T04:46:59Z","title_canon_sha256":"c2ff83b484ab578d0ab4f87158c880f29dc7ad9679ec17f25d9528b4c076f64a"},"schema_version":"1.0","source":{"id":"2508.16088","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.16088","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"arxiv_version","alias_value":"2508.16088v1","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.16088","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"pith_short_12","alias_value":"UW26XD4WLMDN","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"pith_short_16","alias_value":"UW26XD4WLMDNI4TK","created_at":"2026-07-05T11:57:41Z"},{"alias_kind":"pith_short_8","alias_value":"UW26XD4W","created_at":"2026-07-05T11:57:41Z"}],"graph_snapshots":[{"event_id":"sha256:e4d7da674d3c8b69d5f35fd8fba7064076f5b45e776f3c7102be3462bc314b12","target":"graph","created_at":"2026-07-05T11:57:41Z","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/2508.16088/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accelerometers offer motion sensing capabilities across a wide range of areas, enabling navigational awareness in consumer goods and defense applications, and playing a key role in monitoring and control systems. To date, on-chip accelerometers have largely utilized a single device layer or substrate as a test mass. This constrains the test mass to the dimensions and density of the device layer or substrate, ultimately limiting the sensitivity of the device. We demonstrate a new approach which utilizes a pick-and-place bonding technique to increase the test mass of an on-chip accelerometer. By","authors_text":"Benjamin J. Carey, Erick Romero, Glen I. Harris, Leo Sementilli, Margaret Wegener, Nathaniel Bawden, Nishta Arora, Poh-Meng Yeo, Victor M. Valenzuela, Warwick P. Bowen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2025-08-22T04:46:59Z","title":"Precision optomechanical accelerometer via hybrid test mass integration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.16088","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":"sha256:7a843eb813717755e512d2289945e75cfec389e112c1108a4530b6a00fef2c54","target":"record","created_at":"2026-07-05T11:57:41Z","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":"8271a866ae316bd25e07123de6d4efa7eb1702ab7e30f60d7a15ac054c50d603","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.app-ph","submitted_at":"2025-08-22T04:46:59Z","title_canon_sha256":"c2ff83b484ab578d0ab4f87158c880f29dc7ad9679ec17f25d9528b4c076f64a"},"schema_version":"1.0","source":{"id":"2508.16088","kind":"arxiv","version":1}},"canonical_sha256":"a5b5eb8f965b06d4726a2e27e20c37869b7e54ec4d7fe4fce6dde93a09d7312c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a5b5eb8f965b06d4726a2e27e20c37869b7e54ec4d7fe4fce6dde93a09d7312c","first_computed_at":"2026-07-05T11:57:41.853066Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:57:41.853066Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GYy7BtHvFXkGBaZGcR1JzroJowLYuHFJjo/O/qZW+M1W+GiSl5puV1zwUSaG1FPQumZn1LCx9K9UiRLM2pBBBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:57:41.853606Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.16088","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7a843eb813717755e512d2289945e75cfec389e112c1108a4530b6a00fef2c54","sha256:e4d7da674d3c8b69d5f35fd8fba7064076f5b45e776f3c7102be3462bc314b12"],"state_sha256":"92e93c6a322d5857dc36b6ea5421156fb88463cd419acf0b6867de663ef7b6c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s1hwqlFONSv+fxY6YQAxP8+Iyr8/B/7cmYVGIqJXrmLgBXo/UKQsiElNtKi32aU7fd92I6iT9t2vcHsz1xtxAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T02:41:30.896047Z","bundle_sha256":"2afcfc3f5775cbdcb55ede460294584f69544f083502fc9f415f68353fb80e08"}}