{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MZNGMFO72YSLCXUGJ5PMMHNIMB","short_pith_number":"pith:MZNGMFO7","canonical_record":{"source":{"id":"1805.08536","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-22T12:20:01Z","cross_cats_sorted":[],"title_canon_sha256":"0c07cb2f4f1f9b807b0fa7ac23f739d2d9f46c7f5d67bbe31aa80e6fc6416f7c","abstract_canon_sha256":"c0c10390848c1c9c9aeb3ef9060d78dc6915c34723f16790ee005d315b016637"},"schema_version":"1.0"},"canonical_sha256":"665a6615dfd624b15e864f5ec61da8607d873ac97e3c33f674929b37302133bd","source":{"kind":"arxiv","id":"1805.08536","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08536","created_at":"2026-05-17T23:48:34Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08536v2","created_at":"2026-05-17T23:48:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08536","created_at":"2026-05-17T23:48:34Z"},{"alias_kind":"pith_short_12","alias_value":"MZNGMFO72YSL","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MZNGMFO72YSLCXUG","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MZNGMFO7","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MZNGMFO72YSLCXUGJ5PMMHNIMB","target":"record","payload":{"canonical_record":{"source":{"id":"1805.08536","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-22T12:20:01Z","cross_cats_sorted":[],"title_canon_sha256":"0c07cb2f4f1f9b807b0fa7ac23f739d2d9f46c7f5d67bbe31aa80e6fc6416f7c","abstract_canon_sha256":"c0c10390848c1c9c9aeb3ef9060d78dc6915c34723f16790ee005d315b016637"},"schema_version":"1.0"},"canonical_sha256":"665a6615dfd624b15e864f5ec61da8607d873ac97e3c33f674929b37302133bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:34.160727Z","signature_b64":"4iytHaBkBOFb1DwYDdK2cULNZso+6mStnou+srd/hRMpVXKQ0Q6L9z9YEhkv0nkcuky6/XugOX64ABYqKZApDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"665a6615dfd624b15e864f5ec61da8607d873ac97e3c33f674929b37302133bd","last_reissued_at":"2026-05-17T23:48:34.160172Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:34.160172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.08536","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":"2026-05-17T23:48:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WkHBWfIwKuONyvXPl4D7IL/J87a9OC9w4o9b019+KaBhe6c77LAtqI+cxCFqTqSSaLt331r0iHKPe2Sx0mSpBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T13:08:58.457899Z"},"content_sha256":"537e92c47c95d65a67656372c43303e88675667944dda578341a56c92c7620ff","schema_version":"1.0","event_id":"sha256:537e92c47c95d65a67656372c43303e88675667944dda578341a56c92c7620ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MZNGMFO72YSLCXUGJ5PMMHNIMB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Studies of Barkhausen Pulses in Ferroelectrics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"2) ((1) School of Physics, (2) School of Chemistry, (3) Dept. Earth Sciences, Astronomy, Cambridge, Cambridge Univ., C. D. Tan (1), E. K. H. Salje (3), F. D. Morrison (2), J. F. Scott (1, J. Gardner (2), St Andrews, UK, UK), University of St Andrews","submitted_at":"2018-05-22T12:20:01Z","abstract_excerpt":"Systems that produce crackling noises such as Barkhausen pulses are statistically similar and can be compared with one another. In this project, the Barkhausen noise of three ferroelectric lead zirconate titanate (PZT) samples were demonstrated to be compatible with avalanche statistics. The peaks of the slew-rate (time derivative of current $dI/dt$) squared, defined as jerks, were statistically analysed and shown to obey power-laws. The critical exponents obtained for three PZT samples (B, F and S) were 1.73, 1.64 and 1.61, respectively, with a standard deviation of 0.04. This power-law behav"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08536","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":""},"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":"2026-05-17T23:48:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EGqUDsx3A+UbggFzdT+WZALwlIokJIok4ZzE2YeOg2DHmQfzI7yGtZVtD/ZgUVGMXifzE4+eWH9Rn+7Fy369BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T13:08:58.458520Z"},"content_sha256":"3c960b1c066e686f0bcb743a3765020c7c638036defeb9e9c23283359bdc8a34","schema_version":"1.0","event_id":"sha256:3c960b1c066e686f0bcb743a3765020c7c638036defeb9e9c23283359bdc8a34"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MZNGMFO72YSLCXUGJ5PMMHNIMB/bundle.json","state_url":"https://pith.science/pith/MZNGMFO72YSLCXUGJ5PMMHNIMB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MZNGMFO72YSLCXUGJ5PMMHNIMB/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":"2026-05-23T13:08:58Z","links":{"resolver":"https://pith.science/pith/MZNGMFO72YSLCXUGJ5PMMHNIMB","bundle":"https://pith.science/pith/MZNGMFO72YSLCXUGJ5PMMHNIMB/bundle.json","state":"https://pith.science/pith/MZNGMFO72YSLCXUGJ5PMMHNIMB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MZNGMFO72YSLCXUGJ5PMMHNIMB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MZNGMFO72YSLCXUGJ5PMMHNIMB","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":"c0c10390848c1c9c9aeb3ef9060d78dc6915c34723f16790ee005d315b016637","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-22T12:20:01Z","title_canon_sha256":"0c07cb2f4f1f9b807b0fa7ac23f739d2d9f46c7f5d67bbe31aa80e6fc6416f7c"},"schema_version":"1.0","source":{"id":"1805.08536","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08536","created_at":"2026-05-17T23:48:34Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08536v2","created_at":"2026-05-17T23:48:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08536","created_at":"2026-05-17T23:48:34Z"},{"alias_kind":"pith_short_12","alias_value":"MZNGMFO72YSL","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MZNGMFO72YSLCXUG","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MZNGMFO7","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:3c960b1c066e686f0bcb743a3765020c7c638036defeb9e9c23283359bdc8a34","target":"graph","created_at":"2026-05-17T23:48:34Z","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"},"paper":{"abstract_excerpt":"Systems that produce crackling noises such as Barkhausen pulses are statistically similar and can be compared with one another. In this project, the Barkhausen noise of three ferroelectric lead zirconate titanate (PZT) samples were demonstrated to be compatible with avalanche statistics. The peaks of the slew-rate (time derivative of current $dI/dt$) squared, defined as jerks, were statistically analysed and shown to obey power-laws. The critical exponents obtained for three PZT samples (B, F and S) were 1.73, 1.64 and 1.61, respectively, with a standard deviation of 0.04. This power-law behav","authors_text":"2) ((1) School of Physics, (2) School of Chemistry, (3) Dept. Earth Sciences, Astronomy, Cambridge, Cambridge Univ., C. D. Tan (1), E. K. H. Salje (3), F. D. Morrison (2), J. F. Scott (1, J. Gardner (2), St Andrews, UK, UK), University of St Andrews","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-22T12:20:01Z","title":"Studies of Barkhausen Pulses in Ferroelectrics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08536","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":"sha256:537e92c47c95d65a67656372c43303e88675667944dda578341a56c92c7620ff","target":"record","created_at":"2026-05-17T23:48:34Z","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":"c0c10390848c1c9c9aeb3ef9060d78dc6915c34723f16790ee005d315b016637","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-05-22T12:20:01Z","title_canon_sha256":"0c07cb2f4f1f9b807b0fa7ac23f739d2d9f46c7f5d67bbe31aa80e6fc6416f7c"},"schema_version":"1.0","source":{"id":"1805.08536","kind":"arxiv","version":2}},"canonical_sha256":"665a6615dfd624b15e864f5ec61da8607d873ac97e3c33f674929b37302133bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"665a6615dfd624b15e864f5ec61da8607d873ac97e3c33f674929b37302133bd","first_computed_at":"2026-05-17T23:48:34.160172Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:34.160172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4iytHaBkBOFb1DwYDdK2cULNZso+6mStnou+srd/hRMpVXKQ0Q6L9z9YEhkv0nkcuky6/XugOX64ABYqKZApDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:34.160727Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.08536","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:537e92c47c95d65a67656372c43303e88675667944dda578341a56c92c7620ff","sha256:3c960b1c066e686f0bcb743a3765020c7c638036defeb9e9c23283359bdc8a34"],"state_sha256":"fcc98b20c16d972b6460ea181b7fc168ca630e7ea61dc32f9a47ea02f00428c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Ysa6ntN9e0/LTQ+80M9QrluBJKEF3kziu0/5eQPXruG+7TYb397Mq9VX6YOlBcb2JSwBq5gPhEMiKS5Jw0WDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T13:08:58.461504Z","bundle_sha256":"0129aca772e98eea88d3b6d89450aaebb43ea4266ec2ead1c73931fcdca81e07"}}