{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:U3BHH2L4EUQXPKAXSSD4YW4RMH","short_pith_number":"pith:U3BHH2L4","canonical_record":{"source":{"id":"2502.04042","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-06T13:02:42Z","cross_cats_sorted":[],"title_canon_sha256":"ef0a508ffb6f7684f05f6b0ce8d575c94bb3a8e4c9447630f2c2f052db8783b0","abstract_canon_sha256":"32a0801e564ffbbb9bfe05780023bdcfd71180661e54f30a7c03d3cbe263858b"},"schema_version":"1.0"},"canonical_sha256":"a6c273e97c252177a8179487cc5b9161c770f8f0cf4defb8ce4ac19cc09898c4","source":{"kind":"arxiv","id":"2502.04042","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.04042","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"arxiv_version","alias_value":"2502.04042v1","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.04042","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"pith_short_12","alias_value":"U3BHH2L4EUQX","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"pith_short_16","alias_value":"U3BHH2L4EUQXPKAX","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"pith_short_8","alias_value":"U3BHH2L4","created_at":"2026-07-05T10:10:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:U3BHH2L4EUQXPKAXSSD4YW4RMH","target":"record","payload":{"canonical_record":{"source":{"id":"2502.04042","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-06T13:02:42Z","cross_cats_sorted":[],"title_canon_sha256":"ef0a508ffb6f7684f05f6b0ce8d575c94bb3a8e4c9447630f2c2f052db8783b0","abstract_canon_sha256":"32a0801e564ffbbb9bfe05780023bdcfd71180661e54f30a7c03d3cbe263858b"},"schema_version":"1.0"},"canonical_sha256":"a6c273e97c252177a8179487cc5b9161c770f8f0cf4defb8ce4ac19cc09898c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:10:33.308438Z","signature_b64":"2hktFqSg9B0VWHgEFPR3mG30zx4KvY15Xw9BbljoqpuUxiShvwsGfkWHyOD22f9s7PyyzkQ9J335b05qd+x1CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6c273e97c252177a8179487cc5b9161c770f8f0cf4defb8ce4ac19cc09898c4","last_reissued_at":"2026-07-05T10:10:33.307892Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:10:33.307892Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.04042","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":"2026-07-05T10:10:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FmwgEsZMUZZ9YAc5OlEqDOPGt19YMWc9j2Xg9yLfagDplnqtfmbWV8eWTWYO84gbbFoBlnpp8+PnUndUmo5XAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T10:41:36.958432Z"},"content_sha256":"c2b06cf8608ec34972147d60be304f5894836fcd13645bd77749ec66167e9778","schema_version":"1.0","event_id":"sha256:c2b06cf8608ec34972147d60be304f5894836fcd13645bd77749ec66167e9778"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:U3BHH2L4EUQXPKAXSSD4YW4RMH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spontaneous helix formation in polar smectic phase","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Damian Pociecha, Ewa Gorecka, Jakub Herman Przemys{\\l}aw Kula, Jakub Karcz, Julia \\.Zukowska, Ladislav Fekete, Magdalena Majewska","submitted_at":"2025-02-06T13:02:42Z","abstract_excerpt":"In soft ferroelectric crystals, the depolarization field can be reduced by periodic distortion of the polarization direction. In the polar nematic and tilted smectic phases, this process is energetically favorured , as it only requires changes in the director orientation. We demonstrate the spontaneous formation of a helical structure in the proper ferroelectric tilted smectic (SmCTBF) phase, the phase is formed below the heliconical polar nematic (NTBF) phase. The helical pitch in the smectic phase is approximately 600 nm and remains nearly constant across the entire temperature range of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.04042","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/2502.04042/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":"2026-07-05T10:10:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eZsFWGUpk5AQI5pVyNbw9L2U+W8iud2u86CrHyGXAmXcFh/+mTtYKnFmR0s1ypHqWF1SPSjWpJF3wqeF+IgnDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T10:41:36.958965Z"},"content_sha256":"c14ac8d7e1623c5fdd98d703c6a0f954eb180462afd3ff4663daea2b3283c4a1","schema_version":"1.0","event_id":"sha256:c14ac8d7e1623c5fdd98d703c6a0f954eb180462afd3ff4663daea2b3283c4a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U3BHH2L4EUQXPKAXSSD4YW4RMH/bundle.json","state_url":"https://pith.science/pith/U3BHH2L4EUQXPKAXSSD4YW4RMH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U3BHH2L4EUQXPKAXSSD4YW4RMH/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":"2026-08-10T10:41:36Z","links":{"resolver":"https://pith.science/pith/U3BHH2L4EUQXPKAXSSD4YW4RMH","bundle":"https://pith.science/pith/U3BHH2L4EUQXPKAXSSD4YW4RMH/bundle.json","state":"https://pith.science/pith/U3BHH2L4EUQXPKAXSSD4YW4RMH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U3BHH2L4EUQXPKAXSSD4YW4RMH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:U3BHH2L4EUQXPKAXSSD4YW4RMH","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":"32a0801e564ffbbb9bfe05780023bdcfd71180661e54f30a7c03d3cbe263858b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-06T13:02:42Z","title_canon_sha256":"ef0a508ffb6f7684f05f6b0ce8d575c94bb3a8e4c9447630f2c2f052db8783b0"},"schema_version":"1.0","source":{"id":"2502.04042","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.04042","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"arxiv_version","alias_value":"2502.04042v1","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.04042","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"pith_short_12","alias_value":"U3BHH2L4EUQX","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"pith_short_16","alias_value":"U3BHH2L4EUQXPKAX","created_at":"2026-07-05T10:10:33Z"},{"alias_kind":"pith_short_8","alias_value":"U3BHH2L4","created_at":"2026-07-05T10:10:33Z"}],"graph_snapshots":[{"event_id":"sha256:c14ac8d7e1623c5fdd98d703c6a0f954eb180462afd3ff4663daea2b3283c4a1","target":"graph","created_at":"2026-07-05T10:10:33Z","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/2502.04042/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In soft ferroelectric crystals, the depolarization field can be reduced by periodic distortion of the polarization direction. In the polar nematic and tilted smectic phases, this process is energetically favorured , as it only requires changes in the director orientation. We demonstrate the spontaneous formation of a helical structure in the proper ferroelectric tilted smectic (SmCTBF) phase, the phase is formed below the heliconical polar nematic (NTBF) phase. The helical pitch in the smectic phase is approximately 600 nm and remains nearly constant across the entire temperature range of the ","authors_text":"Damian Pociecha, Ewa Gorecka, Jakub Herman Przemys{\\l}aw Kula, Jakub Karcz, Julia \\.Zukowska, Ladislav Fekete, Magdalena Majewska","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-06T13:02:42Z","title":"Spontaneous helix formation in polar smectic phase"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.04042","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:c2b06cf8608ec34972147d60be304f5894836fcd13645bd77749ec66167e9778","target":"record","created_at":"2026-07-05T10:10:33Z","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":"32a0801e564ffbbb9bfe05780023bdcfd71180661e54f30a7c03d3cbe263858b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-06T13:02:42Z","title_canon_sha256":"ef0a508ffb6f7684f05f6b0ce8d575c94bb3a8e4c9447630f2c2f052db8783b0"},"schema_version":"1.0","source":{"id":"2502.04042","kind":"arxiv","version":1}},"canonical_sha256":"a6c273e97c252177a8179487cc5b9161c770f8f0cf4defb8ce4ac19cc09898c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a6c273e97c252177a8179487cc5b9161c770f8f0cf4defb8ce4ac19cc09898c4","first_computed_at":"2026-07-05T10:10:33.307892Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:10:33.307892Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2hktFqSg9B0VWHgEFPR3mG30zx4KvY15Xw9BbljoqpuUxiShvwsGfkWHyOD22f9s7PyyzkQ9J335b05qd+x1CA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:10:33.308438Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.04042","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2b06cf8608ec34972147d60be304f5894836fcd13645bd77749ec66167e9778","sha256:c14ac8d7e1623c5fdd98d703c6a0f954eb180462afd3ff4663daea2b3283c4a1"],"state_sha256":"30342a426807d2af0e5cb5beabe2d8aae435c182ea4f031968dc2b7d976a34b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Unf4LEtbdBDK4SY+y0UL9l/zNC4seAoOhqIUmMPDrtVgwEvQkEtXvF8Mqj6ReudXCbO3EpLyjpX0FvI/d/q6AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T10:41:36.964652Z","bundle_sha256":"edd557425cee842f22c4e5b4ea499a8cccbf8141995d6ec99641e3781adb61cc"}}