{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:YFSSL3FRQ6X6CNAZ5ZG6763YOL","short_pith_number":"pith:YFSSL3FR","canonical_record":{"source":{"id":"1912.03257","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-12-06T17:55:36Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"17b59b2915317ae528c4cda2087c9b116887d940277d1350196b0633b21fde2a","abstract_canon_sha256":"9d8efc2b38cde9e8653b30d9f1b87be28ccb807e8c45431595027dd80a063e8c"},"schema_version":"1.0"},"canonical_sha256":"c16525ecb187afe13419ee4deffb7872cac0f8f2c62d80f2bfbf3c9d2658add2","source":{"kind":"arxiv","id":"1912.03257","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.03257","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"arxiv_version","alias_value":"1912.03257v1","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.03257","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"pith_short_12","alias_value":"YFSSL3FRQ6X6","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"pith_short_16","alias_value":"YFSSL3FRQ6X6CNAZ","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"pith_short_8","alias_value":"YFSSL3FR","created_at":"2026-07-05T00:24:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:YFSSL3FRQ6X6CNAZ5ZG6763YOL","target":"record","payload":{"canonical_record":{"source":{"id":"1912.03257","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-12-06T17:55:36Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"17b59b2915317ae528c4cda2087c9b116887d940277d1350196b0633b21fde2a","abstract_canon_sha256":"9d8efc2b38cde9e8653b30d9f1b87be28ccb807e8c45431595027dd80a063e8c"},"schema_version":"1.0"},"canonical_sha256":"c16525ecb187afe13419ee4deffb7872cac0f8f2c62d80f2bfbf3c9d2658add2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:24:32.079552Z","signature_b64":"dEwAabaQlmA5UrCbQXc1ubEiFzNlzqo/avlReEAfpq9ReF+i2w7T6LrtYh4y7UbGpH7uK4q0Wv/fJQD3KMxQBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c16525ecb187afe13419ee4deffb7872cac0f8f2c62d80f2bfbf3c9d2658add2","last_reissued_at":"2026-07-05T00:24:32.079199Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:24:32.079199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.03257","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":"2026-07-05T00:24:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U3pUvSPfAXcoFvHhrH24QdRgbY/+93pYu/1/SmeMmqWmj2qXPm6x3gGmyFlCsBbr3Zx0/2ADgSiH0b8ASb6eAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:31:13.788849Z"},"content_sha256":"7db70e5da714e34ee359b1899df36b57bb85be04bb4181620f584d6442d83559","schema_version":"1.0","event_id":"sha256:7db70e5da714e34ee359b1899df36b57bb85be04bb4181620f584d6442d83559"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:YFSSL3FRQ6X6CNAZ5ZG6763YOL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Piezoresponse phase as variable in electromechanical characterization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.app-ph","authors_text":"Alexander Tselev, Lane W. Martin, Liam Collins, Nina Balke, Sabine M. Neumayer, Sahar Saremi, Sergei V. Kalinin, Stephen Jesse","submitted_at":"2019-12-06T17:55:36Z","abstract_excerpt":"Piezoresponse force microscopy (PFM) is a powerful characterization technique to readily image and manipulate ferroelectrics domains. PFM gives insight into the strength of local piezoelectric coupling as well as polarization direction through PFM amplitude and phase, respectively. Converting measured arbitrary units to physical material parameters, however, remains a challenge. While much effort has been spent on quantifying the PFM amplitude signal, little attention has been given to the PFM phase and it is often arbitrarily adjusted to fit expectations or processed as recorded. This is prob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.03257","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/1912.03257/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":"2026-07-05T00:24:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dxzDD93zWFbsiz9H4WCuq4NoNxpnZ196qfVA9HOlpTzBN6C6GZZAAO2sVsSM/3SRSZYffdOilP77cYxxjuvPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:31:13.789298Z"},"content_sha256":"d7b19116da82582e6221abd4fcc5365044dc17615daa8e2c15326f86f8702ca9","schema_version":"1.0","event_id":"sha256:d7b19116da82582e6221abd4fcc5365044dc17615daa8e2c15326f86f8702ca9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YFSSL3FRQ6X6CNAZ5ZG6763YOL/bundle.json","state_url":"https://pith.science/pith/YFSSL3FRQ6X6CNAZ5ZG6763YOL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YFSSL3FRQ6X6CNAZ5ZG6763YOL/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":"2026-08-04T23:31:13Z","links":{"resolver":"https://pith.science/pith/YFSSL3FRQ6X6CNAZ5ZG6763YOL","bundle":"https://pith.science/pith/YFSSL3FRQ6X6CNAZ5ZG6763YOL/bundle.json","state":"https://pith.science/pith/YFSSL3FRQ6X6CNAZ5ZG6763YOL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YFSSL3FRQ6X6CNAZ5ZG6763YOL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:YFSSL3FRQ6X6CNAZ5ZG6763YOL","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":"9d8efc2b38cde9e8653b30d9f1b87be28ccb807e8c45431595027dd80a063e8c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-12-06T17:55:36Z","title_canon_sha256":"17b59b2915317ae528c4cda2087c9b116887d940277d1350196b0633b21fde2a"},"schema_version":"1.0","source":{"id":"1912.03257","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.03257","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"arxiv_version","alias_value":"1912.03257v1","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.03257","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"pith_short_12","alias_value":"YFSSL3FRQ6X6","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"pith_short_16","alias_value":"YFSSL3FRQ6X6CNAZ","created_at":"2026-07-05T00:24:32Z"},{"alias_kind":"pith_short_8","alias_value":"YFSSL3FR","created_at":"2026-07-05T00:24:32Z"}],"graph_snapshots":[{"event_id":"sha256:d7b19116da82582e6221abd4fcc5365044dc17615daa8e2c15326f86f8702ca9","target":"graph","created_at":"2026-07-05T00:24:32Z","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/1912.03257/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Piezoresponse force microscopy (PFM) is a powerful characterization technique to readily image and manipulate ferroelectrics domains. PFM gives insight into the strength of local piezoelectric coupling as well as polarization direction through PFM amplitude and phase, respectively. Converting measured arbitrary units to physical material parameters, however, remains a challenge. While much effort has been spent on quantifying the PFM amplitude signal, little attention has been given to the PFM phase and it is often arbitrarily adjusted to fit expectations or processed as recorded. This is prob","authors_text":"Alexander Tselev, Lane W. Martin, Liam Collins, Nina Balke, Sabine M. Neumayer, Sahar Saremi, Sergei V. Kalinin, Stephen Jesse","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-12-06T17:55:36Z","title":"Piezoresponse phase as variable in electromechanical characterization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.03257","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":"sha256:7db70e5da714e34ee359b1899df36b57bb85be04bb4181620f584d6442d83559","target":"record","created_at":"2026-07-05T00:24:32Z","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":"9d8efc2b38cde9e8653b30d9f1b87be28ccb807e8c45431595027dd80a063e8c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-12-06T17:55:36Z","title_canon_sha256":"17b59b2915317ae528c4cda2087c9b116887d940277d1350196b0633b21fde2a"},"schema_version":"1.0","source":{"id":"1912.03257","kind":"arxiv","version":1}},"canonical_sha256":"c16525ecb187afe13419ee4deffb7872cac0f8f2c62d80f2bfbf3c9d2658add2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c16525ecb187afe13419ee4deffb7872cac0f8f2c62d80f2bfbf3c9d2658add2","first_computed_at":"2026-07-05T00:24:32.079199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:24:32.079199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dEwAabaQlmA5UrCbQXc1ubEiFzNlzqo/avlReEAfpq9ReF+i2w7T6LrtYh4y7UbGpH7uK4q0Wv/fJQD3KMxQBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:24:32.079552Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.03257","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7db70e5da714e34ee359b1899df36b57bb85be04bb4181620f584d6442d83559","sha256:d7b19116da82582e6221abd4fcc5365044dc17615daa8e2c15326f86f8702ca9"],"state_sha256":"0c91b03491027aca050ebdfd473ec1d35d7a011fc5c06f644dfd17a75b781392"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xvFtAuAO90JCmd3vKs+eqQB5uFjzayg+ttIq/bUzU0sijFgUMmA1/ibTJEiCR50hprNJ670zrzlRuZDGDfosDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T23:31:13.792632Z","bundle_sha256":"f4bd74c82ee4d22e3da5e354eb99b48c9e4f1242343a8aaa6b0e547e60522318"}}