{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:66E4Z5NCP3ADZ7IUVMJRF7DW5X","short_pith_number":"pith:66E4Z5NC","canonical_record":{"source":{"id":"1705.02143","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-05T09:21:49Z","cross_cats_sorted":[],"title_canon_sha256":"5f62b586eabf815a90ea288f8f84a3fbaa1c9de70da3d819e6780c1a48d3ac6f","abstract_canon_sha256":"8d28d574722a4fa07a0b3a8884a6a3da0316e177a87db466409ac774a15e023b"},"schema_version":"1.0"},"canonical_sha256":"f789ccf5a27ec03cfd14ab1312fc76edd55e2b998df0dd7c13323ca96ab13691","source":{"kind":"arxiv","id":"1705.02143","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02143","created_at":"2026-05-18T00:43:08Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02143v1","created_at":"2026-05-18T00:43:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02143","created_at":"2026-05-18T00:43:08Z"},{"alias_kind":"pith_short_12","alias_value":"66E4Z5NCP3AD","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"66E4Z5NCP3ADZ7IU","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"66E4Z5NC","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:66E4Z5NCP3ADZ7IUVMJRF7DW5X","target":"record","payload":{"canonical_record":{"source":{"id":"1705.02143","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-05T09:21:49Z","cross_cats_sorted":[],"title_canon_sha256":"5f62b586eabf815a90ea288f8f84a3fbaa1c9de70da3d819e6780c1a48d3ac6f","abstract_canon_sha256":"8d28d574722a4fa07a0b3a8884a6a3da0316e177a87db466409ac774a15e023b"},"schema_version":"1.0"},"canonical_sha256":"f789ccf5a27ec03cfd14ab1312fc76edd55e2b998df0dd7c13323ca96ab13691","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:08.279353Z","signature_b64":"QxYpUdDUJS5kzUPIuiZKbshw3TrVH/lfnajeSC7vxJFcuIImtm14d9cMTIP+nvXt+h2MSJZYYpzgS9i5WAzCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f789ccf5a27ec03cfd14ab1312fc76edd55e2b998df0dd7c13323ca96ab13691","last_reissued_at":"2026-05-18T00:43:08.278724Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:08.278724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.02143","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":"2026-05-18T00:43:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CDfTJjOvpWTP/gmJeGykfvUCvHx7PoQVA+jZdEjrMlD8EWpwp/zB9Y/Bb5xPFZmNlfXnaasmrhNl92fTh+YLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T15:32:06.620495Z"},"content_sha256":"de30cc8ad01d43339be17f3e7bf1ee4c1a5c9d5d82606b601060d435356351dd","schema_version":"1.0","event_id":"sha256:de30cc8ad01d43339be17f3e7bf1ee4c1a5c9d5d82606b601060d435356351dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:66E4Z5NCP3ADZ7IUVMJRF7DW5X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unusual ferroelectric and magnetic phases in multiferroic 2H-BaMnO$_3$ ceramics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bogdan Dabrowski, Christelle Kadlec, Dmitry Nuzhnyy, Dominik Kriegner, Fedir Borodavka, Jan Drahokoupil, Jan Kroupa, Jan Prokleska, Kamal Chapagain, Lukas Palatinus. Filip Kadlec, Martin Kempa, Maxim Savinov, Petr Bednyakov, Petr Brazda, Pierre Toledano, Stanislav Kamba, Valentin Laguta, Veronica Goian, Viktor Bovtun","submitted_at":"2017-05-05T09:21:49Z","abstract_excerpt":"The structural phase transition in hexagonal BaMnO$_3$ occurring at $T_c$=130 K was studied in ceramic samples using electron and X-ray diffraction, second harmonic generation as well as by dielectric and lattice dynamic spectroscopies. The low-temperature phase (space group $P6_{3}cm$) is ferroelectric with a triplicated unit cell. The phase transition is driven by an optical soft mode from the Brillouin-zone boundary [$q = (\\frac{1}{3},\\frac{1}{3},0)$]; this mode activates in infrared and Raman spectra below $T_c$ and it hardens according to the Cochran law. Upon cooling below $T_c$, the per"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02143","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":"2026-05-18T00:43:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RhtmzeVX+FLNH1V3Z1ntwwMZbE3oPR4Kxsomus6/0+Ikr/SIUNsgjyRojiaA92VqrLF6ERN/l+ME5LcZ7sBtAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T15:32:06.620839Z"},"content_sha256":"6157622ee5b6876603bcd4ba665487e6d65a400877544e2dd175f373365aa4d5","schema_version":"1.0","event_id":"sha256:6157622ee5b6876603bcd4ba665487e6d65a400877544e2dd175f373365aa4d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/66E4Z5NCP3ADZ7IUVMJRF7DW5X/bundle.json","state_url":"https://pith.science/pith/66E4Z5NCP3ADZ7IUVMJRF7DW5X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/66E4Z5NCP3ADZ7IUVMJRF7DW5X/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":"2026-06-22T15:32:06Z","links":{"resolver":"https://pith.science/pith/66E4Z5NCP3ADZ7IUVMJRF7DW5X","bundle":"https://pith.science/pith/66E4Z5NCP3ADZ7IUVMJRF7DW5X/bundle.json","state":"https://pith.science/pith/66E4Z5NCP3ADZ7IUVMJRF7DW5X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/66E4Z5NCP3ADZ7IUVMJRF7DW5X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:66E4Z5NCP3ADZ7IUVMJRF7DW5X","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":"8d28d574722a4fa07a0b3a8884a6a3da0316e177a87db466409ac774a15e023b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-05T09:21:49Z","title_canon_sha256":"5f62b586eabf815a90ea288f8f84a3fbaa1c9de70da3d819e6780c1a48d3ac6f"},"schema_version":"1.0","source":{"id":"1705.02143","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02143","created_at":"2026-05-18T00:43:08Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02143v1","created_at":"2026-05-18T00:43:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02143","created_at":"2026-05-18T00:43:08Z"},{"alias_kind":"pith_short_12","alias_value":"66E4Z5NCP3AD","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"66E4Z5NCP3ADZ7IU","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"66E4Z5NC","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:6157622ee5b6876603bcd4ba665487e6d65a400877544e2dd175f373365aa4d5","target":"graph","created_at":"2026-05-18T00:43:08Z","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":"The structural phase transition in hexagonal BaMnO$_3$ occurring at $T_c$=130 K was studied in ceramic samples using electron and X-ray diffraction, second harmonic generation as well as by dielectric and lattice dynamic spectroscopies. The low-temperature phase (space group $P6_{3}cm$) is ferroelectric with a triplicated unit cell. The phase transition is driven by an optical soft mode from the Brillouin-zone boundary [$q = (\\frac{1}{3},\\frac{1}{3},0)$]; this mode activates in infrared and Raman spectra below $T_c$ and it hardens according to the Cochran law. Upon cooling below $T_c$, the per","authors_text":"Bogdan Dabrowski, Christelle Kadlec, Dmitry Nuzhnyy, Dominik Kriegner, Fedir Borodavka, Jan Drahokoupil, Jan Kroupa, Jan Prokleska, Kamal Chapagain, Lukas Palatinus. Filip Kadlec, Martin Kempa, Maxim Savinov, Petr Bednyakov, Petr Brazda, Pierre Toledano, Stanislav Kamba, Valentin Laguta, Veronica Goian, Viktor Bovtun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-05T09:21:49Z","title":"Unusual ferroelectric and magnetic phases in multiferroic 2H-BaMnO$_3$ ceramics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02143","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:de30cc8ad01d43339be17f3e7bf1ee4c1a5c9d5d82606b601060d435356351dd","target":"record","created_at":"2026-05-18T00:43:08Z","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":"8d28d574722a4fa07a0b3a8884a6a3da0316e177a87db466409ac774a15e023b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-05T09:21:49Z","title_canon_sha256":"5f62b586eabf815a90ea288f8f84a3fbaa1c9de70da3d819e6780c1a48d3ac6f"},"schema_version":"1.0","source":{"id":"1705.02143","kind":"arxiv","version":1}},"canonical_sha256":"f789ccf5a27ec03cfd14ab1312fc76edd55e2b998df0dd7c13323ca96ab13691","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f789ccf5a27ec03cfd14ab1312fc76edd55e2b998df0dd7c13323ca96ab13691","first_computed_at":"2026-05-18T00:43:08.278724Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:08.278724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QxYpUdDUJS5kzUPIuiZKbshw3TrVH/lfnajeSC7vxJFcuIImtm14d9cMTIP+nvXt+h2MSJZYYpzgS9i5WAzCAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:08.279353Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.02143","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de30cc8ad01d43339be17f3e7bf1ee4c1a5c9d5d82606b601060d435356351dd","sha256:6157622ee5b6876603bcd4ba665487e6d65a400877544e2dd175f373365aa4d5"],"state_sha256":"0bdcd30e184b31900014dba042499521ba343b7cf1c552c854c9e8243215deec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nYgnXWAIGQvbSzpFv5N54h6mCazKSvTCrao8Xc7Kxhgc3hwTbQC0j1+XfVzp26j5aCRUYDDPBBmp9FWA9K0TCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T15:32:06.622726Z","bundle_sha256":"5ffc60322902a519edbe2fea038a04901b277b226e990df03ffd83e884d0d74a"}}