{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:FLCBFLPEHBHZ6GEXDRABX2YLGB","short_pith_number":"pith:FLCBFLPE","canonical_record":{"source":{"id":"2305.17554","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-05-27T19:09:05Z","cross_cats_sorted":[],"title_canon_sha256":"3803ec5592337886dc473d5f087b894165aef8b005f4fccb4b1baa13f89ce3e2","abstract_canon_sha256":"02868d2032571ab4005b177770c0e72d23c080a1afe67d23d9b2b345989305ba"},"schema_version":"1.0"},"canonical_sha256":"2ac412ade4384f9f18971c401beb0b307af3be01b6429b2cff3d8d300957fe15","source":{"kind":"arxiv","id":"2305.17554","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.17554","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"arxiv_version","alias_value":"2305.17554v1","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.17554","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"pith_short_12","alias_value":"FLCBFLPEHBHZ","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"pith_short_16","alias_value":"FLCBFLPEHBHZ6GEX","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"pith_short_8","alias_value":"FLCBFLPE","created_at":"2026-07-05T06:14:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:FLCBFLPEHBHZ6GEXDRABX2YLGB","target":"record","payload":{"canonical_record":{"source":{"id":"2305.17554","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-05-27T19:09:05Z","cross_cats_sorted":[],"title_canon_sha256":"3803ec5592337886dc473d5f087b894165aef8b005f4fccb4b1baa13f89ce3e2","abstract_canon_sha256":"02868d2032571ab4005b177770c0e72d23c080a1afe67d23d9b2b345989305ba"},"schema_version":"1.0"},"canonical_sha256":"2ac412ade4384f9f18971c401beb0b307af3be01b6429b2cff3d8d300957fe15","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:14:45.842405Z","signature_b64":"OtjPPvrdI+dsKssf69XSpj7HAq+fYdZmUNs+ahiG1ID4BuOet8VGvBrDh0TRrTXS6nWlVxhfmMonfCoUtRSNAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ac412ade4384f9f18971c401beb0b307af3be01b6429b2cff3d8d300957fe15","last_reissued_at":"2026-07-05T06:14:45.842058Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:14:45.842058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.17554","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":"2026-07-05T06:14:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ne8kS14YAm59Jw+OanC59Wa56Fnw5geZzf3firVsH6Zfuut7n8Azwi9eeL/vNR97BM8jza7degUwIfFhozlzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T01:21:33.467465Z"},"content_sha256":"97980f23f6a07f3e6c0b79f9327a92d30ae6d09144450fca8815ed4357f9980f","schema_version":"1.0","event_id":"sha256:97980f23f6a07f3e6c0b79f9327a92d30ae6d09144450fca8815ed4357f9980f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:FLCBFLPEHBHZ6GEXDRABX2YLGB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Distinguishing different stackings in layered materials via luminescence spectroscopy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexandre Plaud, Annick Loiseau, Daniele Varsano, Elisa Molinari, Fran\\c{c}ois Ducastelle, Fr\\'ed\\'eric Fossard, Fulvio Paleari, Ingrid Stenger, Julien Barjon, L\\'eonard Schu\\'e, Lorenzo Sponza, Ludger Wirtz, Matteo Zanfrognini","submitted_at":"2023-05-27T19:09:05Z","abstract_excerpt":"Despite its simple crystal structure, layered boron nitride features a surprisingly complex variety of phonon-assisted luminescence peaks. We present a combined experimental and theoretical study on ultraviolet-light emission in hexagonal and rhombohedral bulk boron nitride crystals. Emission spectra of high-quality samples are measured via cathodoluminescence spectroscopy, displaying characteristic differences between the two polytypes. These differences are explained using a fully first-principles computational technique that takes into account radiative emission from ``indirect'', finite-mo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.17554","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/2305.17554/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":"2026-07-05T06:14:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8jH/z+oaWdCksOdlN/ozlx7/xn/E4VGGgrSsV6iQ+FjD1tBtzuj75qpHoH4ciU2s0i+05bJ5pN0LZxbycfspAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T01:21:33.468433Z"},"content_sha256":"820b502fee1009e72211fd2fcb47e1e84ed517a849465cd8bf0e1742576847ef","schema_version":"1.0","event_id":"sha256:820b502fee1009e72211fd2fcb47e1e84ed517a849465cd8bf0e1742576847ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FLCBFLPEHBHZ6GEXDRABX2YLGB/bundle.json","state_url":"https://pith.science/pith/FLCBFLPEHBHZ6GEXDRABX2YLGB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FLCBFLPEHBHZ6GEXDRABX2YLGB/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":"2026-08-18T01:21:33Z","links":{"resolver":"https://pith.science/pith/FLCBFLPEHBHZ6GEXDRABX2YLGB","bundle":"https://pith.science/pith/FLCBFLPEHBHZ6GEXDRABX2YLGB/bundle.json","state":"https://pith.science/pith/FLCBFLPEHBHZ6GEXDRABX2YLGB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FLCBFLPEHBHZ6GEXDRABX2YLGB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:FLCBFLPEHBHZ6GEXDRABX2YLGB","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":"02868d2032571ab4005b177770c0e72d23c080a1afe67d23d9b2b345989305ba","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-05-27T19:09:05Z","title_canon_sha256":"3803ec5592337886dc473d5f087b894165aef8b005f4fccb4b1baa13f89ce3e2"},"schema_version":"1.0","source":{"id":"2305.17554","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.17554","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"arxiv_version","alias_value":"2305.17554v1","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.17554","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"pith_short_12","alias_value":"FLCBFLPEHBHZ","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"pith_short_16","alias_value":"FLCBFLPEHBHZ6GEX","created_at":"2026-07-05T06:14:45Z"},{"alias_kind":"pith_short_8","alias_value":"FLCBFLPE","created_at":"2026-07-05T06:14:45Z"}],"graph_snapshots":[{"event_id":"sha256:820b502fee1009e72211fd2fcb47e1e84ed517a849465cd8bf0e1742576847ef","target":"graph","created_at":"2026-07-05T06:14:45Z","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/2305.17554/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Despite its simple crystal structure, layered boron nitride features a surprisingly complex variety of phonon-assisted luminescence peaks. We present a combined experimental and theoretical study on ultraviolet-light emission in hexagonal and rhombohedral bulk boron nitride crystals. Emission spectra of high-quality samples are measured via cathodoluminescence spectroscopy, displaying characteristic differences between the two polytypes. These differences are explained using a fully first-principles computational technique that takes into account radiative emission from ``indirect'', finite-mo","authors_text":"Alexandre Plaud, Annick Loiseau, Daniele Varsano, Elisa Molinari, Fran\\c{c}ois Ducastelle, Fr\\'ed\\'eric Fossard, Fulvio Paleari, Ingrid Stenger, Julien Barjon, L\\'eonard Schu\\'e, Lorenzo Sponza, Ludger Wirtz, Matteo Zanfrognini","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-05-27T19:09:05Z","title":"Distinguishing different stackings in layered materials via luminescence spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.17554","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":"sha256:97980f23f6a07f3e6c0b79f9327a92d30ae6d09144450fca8815ed4357f9980f","target":"record","created_at":"2026-07-05T06:14:45Z","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":"02868d2032571ab4005b177770c0e72d23c080a1afe67d23d9b2b345989305ba","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-05-27T19:09:05Z","title_canon_sha256":"3803ec5592337886dc473d5f087b894165aef8b005f4fccb4b1baa13f89ce3e2"},"schema_version":"1.0","source":{"id":"2305.17554","kind":"arxiv","version":1}},"canonical_sha256":"2ac412ade4384f9f18971c401beb0b307af3be01b6429b2cff3d8d300957fe15","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ac412ade4384f9f18971c401beb0b307af3be01b6429b2cff3d8d300957fe15","first_computed_at":"2026-07-05T06:14:45.842058Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:14:45.842058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OtjPPvrdI+dsKssf69XSpj7HAq+fYdZmUNs+ahiG1ID4BuOet8VGvBrDh0TRrTXS6nWlVxhfmMonfCoUtRSNAg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:14:45.842405Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.17554","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97980f23f6a07f3e6c0b79f9327a92d30ae6d09144450fca8815ed4357f9980f","sha256:820b502fee1009e72211fd2fcb47e1e84ed517a849465cd8bf0e1742576847ef"],"state_sha256":"2c5b766ba84a7340573b97a3e3369aa4d47784249f3a8337f813f504d6682566"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vve0sxUJegnaaiMBssHUWunxiaHPaP1UP1fTO3a8QI8oF+GhfXfGgS9Y7sUa3ZYeFN5HXEQ7mpfre87aeB9EBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T01:21:33.536493Z","bundle_sha256":"6dca064a63f9c6fc499ca27de248f40e38a56e7081514f5a5eae0b8fde90ba66"}}