{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:SZ4IKWACRTKEHQAZUHU44L4C75","short_pith_number":"pith:SZ4IKWAC","canonical_record":{"source":{"id":"2207.07191","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-14T20:27:39Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"582527102e79aa4cfbc29bbbcd634067aaa1c5b1d4f5864ec8307463c74a1239","abstract_canon_sha256":"50898c8b0512ef00b3b2c82e882f46cc7c49c54971e8f7b74016baac1ca97cd3"},"schema_version":"1.0"},"canonical_sha256":"96788558028cd443c019a1e9ce2f82ff69a9929a6dd1b5e136ce7b62d373b217","source":{"kind":"arxiv","id":"2207.07191","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07191","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07191v2","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07191","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"pith_short_12","alias_value":"SZ4IKWACRTKE","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"pith_short_16","alias_value":"SZ4IKWACRTKEHQAZ","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"pith_short_8","alias_value":"SZ4IKWAC","created_at":"2026-07-05T05:26:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:SZ4IKWACRTKEHQAZUHU44L4C75","target":"record","payload":{"canonical_record":{"source":{"id":"2207.07191","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-14T20:27:39Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"582527102e79aa4cfbc29bbbcd634067aaa1c5b1d4f5864ec8307463c74a1239","abstract_canon_sha256":"50898c8b0512ef00b3b2c82e882f46cc7c49c54971e8f7b74016baac1ca97cd3"},"schema_version":"1.0"},"canonical_sha256":"96788558028cd443c019a1e9ce2f82ff69a9929a6dd1b5e136ce7b62d373b217","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:26:45.459941Z","signature_b64":"7IJ9CJ0It2fwons+KiNan+u3czHe740aYqwdBLEDEVohiic4XSB9x/szZalMNgceW/iVHw6RjOpyEJEN6UgeBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96788558028cd443c019a1e9ce2f82ff69a9929a6dd1b5e136ce7b62d373b217","last_reissued_at":"2026-07-05T05:26:45.459448Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:26:45.459448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.07191","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":"2026-07-05T05:26:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PPCX9VFKjR131ClmGAg5PFdGOBb2TRrxrKlB9xwAr5bXVJenB6oKuVYx/87K+hCuDW0ThcVahF0U7x49yhe9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T06:21:53.003755Z"},"content_sha256":"dcc5286083fe0e8693019e63418b91208e66eed68dc00c49b4c0ab7465305493","schema_version":"1.0","event_id":"sha256:dcc5286083fe0e8693019e63418b91208e66eed68dc00c49b4c0ab7465305493"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:SZ4IKWACRTKEHQAZUHU44L4C75","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Soft-phonon and charge-density-wave formation in nematic BaNi$_2$As$_2$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"A.-A. Haghighirad, A. Bosak, C. Meingast, L. Paolasini, M. Frachet, M. Le Tacon, M. Merz, R. Heid, S. M. Souliou, T. Lacmann","submitted_at":"2022-07-14T20:27:39Z","abstract_excerpt":"We use diffuse and inelastic x-ray scattering to study the formation of an incommensurate charge-density-wave (I-CDW) in BaNi$_2$As$_2$, a candidate system for charge-driven electronic nematicity. Intense diffuse scattering is observed around the modulation vector of the I-CDW, $Q_{I-CDW}$. It is already visible at room temperature and collapses into superstructure reflections in the long-range ordered state where a small orthorhombic distortion occurs. A clear dip in the dispersion of a low-energy transverse optical phonon mode is observed around $Q_{I-CDW}$. The phonon continuously softens u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07191","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/2207.07191/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":"2026-07-05T05:26:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I6dCksIVmyk2XijW10wB/Zlje0QUNc5oXXQLXF7x3zHt4gmsB10hR7VBLJxQa/9ylMujVpUG60J14i1c5e6WCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T06:21:53.004087Z"},"content_sha256":"e24fd2ac9d195c2b3f891a3e5ceb80a03102b40fdec3ca0ca3cb812c7f03e922","schema_version":"1.0","event_id":"sha256:e24fd2ac9d195c2b3f891a3e5ceb80a03102b40fdec3ca0ca3cb812c7f03e922"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SZ4IKWACRTKEHQAZUHU44L4C75/bundle.json","state_url":"https://pith.science/pith/SZ4IKWACRTKEHQAZUHU44L4C75/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SZ4IKWACRTKEHQAZUHU44L4C75/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":"2026-08-20T06:21:53Z","links":{"resolver":"https://pith.science/pith/SZ4IKWACRTKEHQAZUHU44L4C75","bundle":"https://pith.science/pith/SZ4IKWACRTKEHQAZUHU44L4C75/bundle.json","state":"https://pith.science/pith/SZ4IKWACRTKEHQAZUHU44L4C75/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SZ4IKWACRTKEHQAZUHU44L4C75/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:SZ4IKWACRTKEHQAZUHU44L4C75","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":"50898c8b0512ef00b3b2c82e882f46cc7c49c54971e8f7b74016baac1ca97cd3","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-14T20:27:39Z","title_canon_sha256":"582527102e79aa4cfbc29bbbcd634067aaa1c5b1d4f5864ec8307463c74a1239"},"schema_version":"1.0","source":{"id":"2207.07191","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07191","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07191v2","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07191","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"pith_short_12","alias_value":"SZ4IKWACRTKE","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"pith_short_16","alias_value":"SZ4IKWACRTKEHQAZ","created_at":"2026-07-05T05:26:45Z"},{"alias_kind":"pith_short_8","alias_value":"SZ4IKWAC","created_at":"2026-07-05T05:26:45Z"}],"graph_snapshots":[{"event_id":"sha256:e24fd2ac9d195c2b3f891a3e5ceb80a03102b40fdec3ca0ca3cb812c7f03e922","target":"graph","created_at":"2026-07-05T05:26:45Z","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/2207.07191/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use diffuse and inelastic x-ray scattering to study the formation of an incommensurate charge-density-wave (I-CDW) in BaNi$_2$As$_2$, a candidate system for charge-driven electronic nematicity. Intense diffuse scattering is observed around the modulation vector of the I-CDW, $Q_{I-CDW}$. It is already visible at room temperature and collapses into superstructure reflections in the long-range ordered state where a small orthorhombic distortion occurs. A clear dip in the dispersion of a low-energy transverse optical phonon mode is observed around $Q_{I-CDW}$. The phonon continuously softens u","authors_text":"A.-A. Haghighirad, A. Bosak, C. Meingast, L. Paolasini, M. Frachet, M. Le Tacon, M. Merz, R. Heid, S. M. Souliou, T. Lacmann","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-14T20:27:39Z","title":"Soft-phonon and charge-density-wave formation in nematic BaNi$_2$As$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07191","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:dcc5286083fe0e8693019e63418b91208e66eed68dc00c49b4c0ab7465305493","target":"record","created_at":"2026-07-05T05:26:45Z","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":"50898c8b0512ef00b3b2c82e882f46cc7c49c54971e8f7b74016baac1ca97cd3","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-07-14T20:27:39Z","title_canon_sha256":"582527102e79aa4cfbc29bbbcd634067aaa1c5b1d4f5864ec8307463c74a1239"},"schema_version":"1.0","source":{"id":"2207.07191","kind":"arxiv","version":2}},"canonical_sha256":"96788558028cd443c019a1e9ce2f82ff69a9929a6dd1b5e136ce7b62d373b217","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96788558028cd443c019a1e9ce2f82ff69a9929a6dd1b5e136ce7b62d373b217","first_computed_at":"2026-07-05T05:26:45.459448Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:26:45.459448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7IJ9CJ0It2fwons+KiNan+u3czHe740aYqwdBLEDEVohiic4XSB9x/szZalMNgceW/iVHw6RjOpyEJEN6UgeBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:26:45.459941Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.07191","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dcc5286083fe0e8693019e63418b91208e66eed68dc00c49b4c0ab7465305493","sha256:e24fd2ac9d195c2b3f891a3e5ceb80a03102b40fdec3ca0ca3cb812c7f03e922"],"state_sha256":"c77e7fa1305114bcd9a0987bc0da1a759a3603bfce9323b3322458a99e805230"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YhR38P56iv3BmFyr40bY+TICpQkK4udsBDjQaRgFpgIniKfE01Ot91Gc2N9Bj7CJV4ODIw28y8Yh64HXiDtVDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T06:21:53.007328Z","bundle_sha256":"3826a83e4b37af9549f77e84547acc3b4525b965d6bf2a1be003b71c0ecf4536"}}