{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:LT56WQRQ7A5SW45IUWT2LQHM5Q","short_pith_number":"pith:LT56WQRQ","canonical_record":{"source":{"id":"1911.12277","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-27T16:47:58Z","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det"],"title_canon_sha256":"91f3e831d9a37885870f405f19033d3190d3c7eb27d9d5e3a9df4b6e36790ea7","abstract_canon_sha256":"428310ae5b89adff221c996ddc613ea070d564a6235fb30caf9b79a353516d0e"},"schema_version":"1.0"},"canonical_sha256":"5cfbeb4230f83b2b73a8a5a7a5c0ecec2b0bfa3712876d73831e381f1bfa538b","source":{"kind":"arxiv","id":"1911.12277","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.12277","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"arxiv_version","alias_value":"1911.12277v2","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.12277","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"pith_short_12","alias_value":"LT56WQRQ7A5S","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"pith_short_16","alias_value":"LT56WQRQ7A5SW45I","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"pith_short_8","alias_value":"LT56WQRQ","created_at":"2026-07-05T00:45:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:LT56WQRQ7A5SW45IUWT2LQHM5Q","target":"record","payload":{"canonical_record":{"source":{"id":"1911.12277","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-27T16:47:58Z","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det"],"title_canon_sha256":"91f3e831d9a37885870f405f19033d3190d3c7eb27d9d5e3a9df4b6e36790ea7","abstract_canon_sha256":"428310ae5b89adff221c996ddc613ea070d564a6235fb30caf9b79a353516d0e"},"schema_version":"1.0"},"canonical_sha256":"5cfbeb4230f83b2b73a8a5a7a5c0ecec2b0bfa3712876d73831e381f1bfa538b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:45:15.977507Z","signature_b64":"E0YqaPVIC00P1ON1zm4g+PRZufo4pqbXnSEQeOJj1lmMbqhQUqh4pKz25y4oXVolFtvHEdJyuarj6aX/vhljCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5cfbeb4230f83b2b73a8a5a7a5c0ecec2b0bfa3712876d73831e381f1bfa538b","last_reissued_at":"2026-07-05T00:45:15.977103Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:45:15.977103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1911.12277","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":"2026-07-05T00:45:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RssDWcb/ixQq3YcuwwkVqYVWSCdBqw+SO4vWaYPXiUtKvu9xMYfQvGsh7kXrHQx4YuVITBQOrvchXYDYs9XlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:11:01.944857Z"},"content_sha256":"9b31a5d26b188af6418d9ca6f3d3ba8578bfc616d54cc887e459ac0923e3535e","schema_version":"1.0","event_id":"sha256:9b31a5d26b188af6418d9ca6f3d3ba8578bfc616d54cc887e459ac0923e3535e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:LT56WQRQ7A5SW45IUWT2LQHM5Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A method for the experimental measurement of bulk and shear loss angles in amorphous thin films","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","gr-qc","physics.ins-det"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alena Ananyeva, Anchal Gupta, Carmen S. Menoni, Gabriele Vajente, GariLynn Billingsley, Le Yang, Mariana Fazio","submitted_at":"2019-11-27T16:47:58Z","abstract_excerpt":"Brownian thermal noise is a limiting factor for the sensitivity of many high precision metrology applications, among other gravitational-wave detectors. The origin of Brownian noise can be traced down to internal friction in the amorphous materials that are used for the high reflection coatings. To properly characterize the internal friction in an amorphous material, one needs to consider separately the bulk and shear losses. In most of previous works the two loss angles were considered equal, although without any first principle motivation. In this work we present a method that can be used to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.12277","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1911.12277/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":"2026-07-05T00:45:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GkhKa8an0XagesEhgtMNhZGAXCYe21y85hunA/VUozCVi8/0A1Z1bc28/B2fDHgqaRJ+8lDcLgy0T/wz5zuxCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:11:01.945398Z"},"content_sha256":"74b807258bc3d6cd555a764ad446318739d28914c1c10b1e69f327ef3be92fed","schema_version":"1.0","event_id":"sha256:74b807258bc3d6cd555a764ad446318739d28914c1c10b1e69f327ef3be92fed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LT56WQRQ7A5SW45IUWT2LQHM5Q/bundle.json","state_url":"https://pith.science/pith/LT56WQRQ7A5SW45IUWT2LQHM5Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LT56WQRQ7A5SW45IUWT2LQHM5Q/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":"2026-08-03T20:11:01Z","links":{"resolver":"https://pith.science/pith/LT56WQRQ7A5SW45IUWT2LQHM5Q","bundle":"https://pith.science/pith/LT56WQRQ7A5SW45IUWT2LQHM5Q/bundle.json","state":"https://pith.science/pith/LT56WQRQ7A5SW45IUWT2LQHM5Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LT56WQRQ7A5SW45IUWT2LQHM5Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:LT56WQRQ7A5SW45IUWT2LQHM5Q","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":"428310ae5b89adff221c996ddc613ea070d564a6235fb30caf9b79a353516d0e","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-27T16:47:58Z","title_canon_sha256":"91f3e831d9a37885870f405f19033d3190d3c7eb27d9d5e3a9df4b6e36790ea7"},"schema_version":"1.0","source":{"id":"1911.12277","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.12277","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"arxiv_version","alias_value":"1911.12277v2","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.12277","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"pith_short_12","alias_value":"LT56WQRQ7A5S","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"pith_short_16","alias_value":"LT56WQRQ7A5SW45I","created_at":"2026-07-05T00:45:15Z"},{"alias_kind":"pith_short_8","alias_value":"LT56WQRQ","created_at":"2026-07-05T00:45:15Z"}],"graph_snapshots":[{"event_id":"sha256:74b807258bc3d6cd555a764ad446318739d28914c1c10b1e69f327ef3be92fed","target":"graph","created_at":"2026-07-05T00:45:15Z","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/1911.12277/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Brownian thermal noise is a limiting factor for the sensitivity of many high precision metrology applications, among other gravitational-wave detectors. The origin of Brownian noise can be traced down to internal friction in the amorphous materials that are used for the high reflection coatings. To properly characterize the internal friction in an amorphous material, one needs to consider separately the bulk and shear losses. In most of previous works the two loss angles were considered equal, although without any first principle motivation. In this work we present a method that can be used to","authors_text":"Alena Ananyeva, Anchal Gupta, Carmen S. Menoni, Gabriele Vajente, GariLynn Billingsley, Le Yang, Mariana Fazio","cross_cats":["astro-ph.IM","gr-qc","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-27T16:47:58Z","title":"A method for the experimental measurement of bulk and shear loss angles in amorphous thin films"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.12277","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":"sha256:9b31a5d26b188af6418d9ca6f3d3ba8578bfc616d54cc887e459ac0923e3535e","target":"record","created_at":"2026-07-05T00:45:15Z","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":"428310ae5b89adff221c996ddc613ea070d564a6235fb30caf9b79a353516d0e","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-27T16:47:58Z","title_canon_sha256":"91f3e831d9a37885870f405f19033d3190d3c7eb27d9d5e3a9df4b6e36790ea7"},"schema_version":"1.0","source":{"id":"1911.12277","kind":"arxiv","version":2}},"canonical_sha256":"5cfbeb4230f83b2b73a8a5a7a5c0ecec2b0bfa3712876d73831e381f1bfa538b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5cfbeb4230f83b2b73a8a5a7a5c0ecec2b0bfa3712876d73831e381f1bfa538b","first_computed_at":"2026-07-05T00:45:15.977103Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:45:15.977103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E0YqaPVIC00P1ON1zm4g+PRZufo4pqbXnSEQeOJj1lmMbqhQUqh4pKz25y4oXVolFtvHEdJyuarj6aX/vhljCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:45:15.977507Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.12277","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b31a5d26b188af6418d9ca6f3d3ba8578bfc616d54cc887e459ac0923e3535e","sha256:74b807258bc3d6cd555a764ad446318739d28914c1c10b1e69f327ef3be92fed"],"state_sha256":"066c199d5ef38a9239accd1786f56aa9c6342c7695a187d00e248fd18a15ae57"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RLkSK1L6668zGzk5GYof0hdfv3Le2Vt5P1P2ok/m5WFZiZUzv9mjGr1rJrMff0j1E+3k4f6+DiVmhYMSitisBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T20:11:01.950362Z","bundle_sha256":"0eb2e334644c1b66ab9bbcb4736ce6b783b2fa39721df53d2b0ac2862438d0f6"}}