{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:M4L2PJFWSXJW6PAKSRKA2IV5JL","short_pith_number":"pith:M4L2PJFW","canonical_record":{"source":{"id":"1703.04657","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-14T18:44:22Z","cross_cats_sorted":[],"title_canon_sha256":"70e963987ad3787f741d16cc319e23f94c22c9260dd7b2d04bd92e5a1d625c42","abstract_canon_sha256":"a11c6e195327b083f2266ac9c282cc39cf44736e660dd2df6066b0ee46301395"},"schema_version":"1.0"},"canonical_sha256":"6717a7a4b695d36f3c0a94540d22bd4acc34ec42c0a7f95ee1968e31c62c8721","source":{"kind":"arxiv","id":"1703.04657","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.04657","created_at":"2026-05-18T00:48:39Z"},{"alias_kind":"arxiv_version","alias_value":"1703.04657v1","created_at":"2026-05-18T00:48:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.04657","created_at":"2026-05-18T00:48:39Z"},{"alias_kind":"pith_short_12","alias_value":"M4L2PJFWSXJW","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"M4L2PJFWSXJW6PAK","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"M4L2PJFW","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:M4L2PJFWSXJW6PAKSRKA2IV5JL","target":"record","payload":{"canonical_record":{"source":{"id":"1703.04657","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-14T18:44:22Z","cross_cats_sorted":[],"title_canon_sha256":"70e963987ad3787f741d16cc319e23f94c22c9260dd7b2d04bd92e5a1d625c42","abstract_canon_sha256":"a11c6e195327b083f2266ac9c282cc39cf44736e660dd2df6066b0ee46301395"},"schema_version":"1.0"},"canonical_sha256":"6717a7a4b695d36f3c0a94540d22bd4acc34ec42c0a7f95ee1968e31c62c8721","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:39.499462Z","signature_b64":"63ZPA7Vtz8lNYWXnktIH3XOsQ/NgMM0wx2OEnaaDQAuZzve7J24/3TxJdS/H7cHwFDVBcZ34eTYmaHy9lGwQCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6717a7a4b695d36f3c0a94540d22bd4acc34ec42c0a7f95ee1968e31c62c8721","last_reissued_at":"2026-05-18T00:48:39.498872Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:39.498872Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.04657","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":"2026-05-18T00:48:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E/MuYMNyT+TAT/kg5o//Tu2QeMt9QhSh8TQkL2kXcXjfo8LzpJnatjiHNppCB2b8809P0aZouMocMzc8Z7cFCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:32:49.712700Z"},"content_sha256":"2d858c8a2a5dca48db7fbf35de2fe6b28aefb285266e63fbfe7fca4a5c98f389","schema_version":"1.0","event_id":"sha256:2d858c8a2a5dca48db7fbf35de2fe6b28aefb285266e63fbfe7fca4a5c98f389"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:M4L2PJFWSXJW6PAKSRKA2IV5JL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The crystal structure of Rb2Ti2O5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Descamps-Mandine, A. F. Popa, A. Shukla, B. Baptiste, B. Leridon, F.Finocchi, G. Rousse, K. Beneut, L. Brohan, P. Giura, R. Federicci, T. Douillard","submitted_at":"2017-03-14T18:44:22Z","abstract_excerpt":"Recent results have demonstrated an exceptionally high dielectric constant in the range 200 K-330 K in a crystalline tianium oxide : Rb2Ti2O5. In this article, the possibility of a structural transition giving rise to ferroelectricity is carefully inspected. In particular X-Ray diffraction, high resolution transmission electron microscopy and Raman spectroscopy are performed. The crystal structure is shown to remain invariant and centrosymmetric at all temperatures between 90 K and 450 K. The stability of the C2/m structure is confirmed by DFT calculations. These important findings allow to di"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.04657","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":""},"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":"2026-05-18T00:48:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+/RmvEBd2eeiawpxlH64kpaKM+VhEri5bJEV+9duLvXtYDeBO0ellwGGmN8t1EQ22K6i1Y3Kz3TgkB93gCVrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:32:49.713352Z"},"content_sha256":"6428c3ab0b94fc19c7daf2c33d2e464751e07ddae04f447d81cc03a490999528","schema_version":"1.0","event_id":"sha256:6428c3ab0b94fc19c7daf2c33d2e464751e07ddae04f447d81cc03a490999528"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M4L2PJFWSXJW6PAKSRKA2IV5JL/bundle.json","state_url":"https://pith.science/pith/M4L2PJFWSXJW6PAKSRKA2IV5JL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M4L2PJFWSXJW6PAKSRKA2IV5JL/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":"2026-05-25T19:32:49Z","links":{"resolver":"https://pith.science/pith/M4L2PJFWSXJW6PAKSRKA2IV5JL","bundle":"https://pith.science/pith/M4L2PJFWSXJW6PAKSRKA2IV5JL/bundle.json","state":"https://pith.science/pith/M4L2PJFWSXJW6PAKSRKA2IV5JL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M4L2PJFWSXJW6PAKSRKA2IV5JL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:M4L2PJFWSXJW6PAKSRKA2IV5JL","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":"a11c6e195327b083f2266ac9c282cc39cf44736e660dd2df6066b0ee46301395","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-14T18:44:22Z","title_canon_sha256":"70e963987ad3787f741d16cc319e23f94c22c9260dd7b2d04bd92e5a1d625c42"},"schema_version":"1.0","source":{"id":"1703.04657","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.04657","created_at":"2026-05-18T00:48:39Z"},{"alias_kind":"arxiv_version","alias_value":"1703.04657v1","created_at":"2026-05-18T00:48:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.04657","created_at":"2026-05-18T00:48:39Z"},{"alias_kind":"pith_short_12","alias_value":"M4L2PJFWSXJW","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"M4L2PJFWSXJW6PAK","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"M4L2PJFW","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:6428c3ab0b94fc19c7daf2c33d2e464751e07ddae04f447d81cc03a490999528","target":"graph","created_at":"2026-05-18T00:48:39Z","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":"Recent results have demonstrated an exceptionally high dielectric constant in the range 200 K-330 K in a crystalline tianium oxide : Rb2Ti2O5. In this article, the possibility of a structural transition giving rise to ferroelectricity is carefully inspected. In particular X-Ray diffraction, high resolution transmission electron microscopy and Raman spectroscopy are performed. The crystal structure is shown to remain invariant and centrosymmetric at all temperatures between 90 K and 450 K. The stability of the C2/m structure is confirmed by DFT calculations. These important findings allow to di","authors_text":"A. Descamps-Mandine, A. F. Popa, A. Shukla, B. Baptiste, B. Leridon, F.Finocchi, G. Rousse, K. Beneut, L. Brohan, P. Giura, R. Federicci, T. Douillard","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-14T18:44:22Z","title":"The crystal structure of Rb2Ti2O5"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.04657","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":"sha256:2d858c8a2a5dca48db7fbf35de2fe6b28aefb285266e63fbfe7fca4a5c98f389","target":"record","created_at":"2026-05-18T00:48:39Z","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":"a11c6e195327b083f2266ac9c282cc39cf44736e660dd2df6066b0ee46301395","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-14T18:44:22Z","title_canon_sha256":"70e963987ad3787f741d16cc319e23f94c22c9260dd7b2d04bd92e5a1d625c42"},"schema_version":"1.0","source":{"id":"1703.04657","kind":"arxiv","version":1}},"canonical_sha256":"6717a7a4b695d36f3c0a94540d22bd4acc34ec42c0a7f95ee1968e31c62c8721","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6717a7a4b695d36f3c0a94540d22bd4acc34ec42c0a7f95ee1968e31c62c8721","first_computed_at":"2026-05-18T00:48:39.498872Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:39.498872Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"63ZPA7Vtz8lNYWXnktIH3XOsQ/NgMM0wx2OEnaaDQAuZzve7J24/3TxJdS/H7cHwFDVBcZ34eTYmaHy9lGwQCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:39.499462Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.04657","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d858c8a2a5dca48db7fbf35de2fe6b28aefb285266e63fbfe7fca4a5c98f389","sha256:6428c3ab0b94fc19c7daf2c33d2e464751e07ddae04f447d81cc03a490999528"],"state_sha256":"50e6a91d551203db9951473ec6497aeedd21a81de2beb395e46a51ab4781a899"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aREFNMMqDwsxOZJNwsx9G0LVvjxXMi+0L8ZndzN+YHNb/bNGHtczHeRNWqbFY5hw76m2DiwGXnDTejJzLHzpBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:32:49.716921Z","bundle_sha256":"994558125542991d694281c531c5a4e246ea5722a4cc5436a25ec23fc452e14d"}}