{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:SJF5MVNU3DTMPZZQ6QRIAF6JFO","short_pith_number":"pith:SJF5MVNU","canonical_record":{"source":{"id":"2307.15520","kind":"arxiv","version":5},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-07-28T12:26:18Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"3f1dca66d93478b1fec7040036a4f91d332faa906d5fe4d096668f3bc9431704","abstract_canon_sha256":"e45b94c7e34937320c8bea466646ee2efb630a053af1e4b5a49e6579305e59fe"},"schema_version":"1.0"},"canonical_sha256":"924bd655b4d8e6c7e730f4228017c92b9978b51801a45694520b81bc638c804a","source":{"kind":"arxiv","id":"2307.15520","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.15520","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"arxiv_version","alias_value":"2307.15520v5","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.15520","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"pith_short_12","alias_value":"SJF5MVNU3DTM","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"pith_short_16","alias_value":"SJF5MVNU3DTMPZZQ","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"pith_short_8","alias_value":"SJF5MVNU","created_at":"2026-07-05T07:44:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:SJF5MVNU3DTMPZZQ6QRIAF6JFO","target":"record","payload":{"canonical_record":{"source":{"id":"2307.15520","kind":"arxiv","version":5},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-07-28T12:26:18Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"3f1dca66d93478b1fec7040036a4f91d332faa906d5fe4d096668f3bc9431704","abstract_canon_sha256":"e45b94c7e34937320c8bea466646ee2efb630a053af1e4b5a49e6579305e59fe"},"schema_version":"1.0"},"canonical_sha256":"924bd655b4d8e6c7e730f4228017c92b9978b51801a45694520b81bc638c804a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:44:19.224262Z","signature_b64":"wbM83ITUKi6mNjMHWfOtwno31xhJ2m5wO4uMOMHYfIk0aaKw7OYjMUkrgnqBg8NWyCC6+IYnjkYX4ZRm56hRCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"924bd655b4d8e6c7e730f4228017c92b9978b51801a45694520b81bc638c804a","last_reissued_at":"2026-07-05T07:44:19.223877Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:44:19.223877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2307.15520","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:44:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DflAWj5xyhsjJ/68l2RbmeaPTjeBCFQeMDa/VGKB4Q4ZPzvX34lsb8UVVh/8Wc0l+f9lrpI0xNnlTWZBuCwCCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T10:55:47.436549Z"},"content_sha256":"2cd8da5f3db6880bba38f9cc6d8ce006be59c3132e909dc6cbd7499240161d57","schema_version":"1.0","event_id":"sha256:2cd8da5f3db6880bba38f9cc6d8ce006be59c3132e909dc6cbd7499240161d57"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:SJF5MVNU3DTMPZZQ6QRIAF6JFO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Raman spectroscopy of monolayer to bulk PtSe2 exfoliated crystals","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Bernard Pla\\c{c}ais, Christophe Voisin, Dominique Carisetti, Emmanuel Baudin, Eva Desgu\\'e, Marin Tharrault, Pierre Legagneux","submitted_at":"2023-07-28T12:26:18Z","abstract_excerpt":"Raman spectroscopy is widely used to assess the quality of 2D materials thin films. This report focuses on $\\rm{PtSe_2}$, a noble transition metal dichalcogenide which has the remarkable property to transit from a semi-conductor to a semi-metal with increasing layer number. While polycrystalline $\\rm{PtSe_2}$ can be grown with various crystalline qualities, getting insight into the monocrystalline intrinsic properties remains challenging. We report on the study of exfoliated 1 to 10 layers $\\rm{PtSe_2}$ by Raman spectroscopy, featuring record linewidth. The clear Raman signatures allow layer-t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.15520","kind":"arxiv","version":5},"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/2307.15520/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":"2026-07-05T07:44:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TIMKc+NGiJ8rwjTlINPKTxLWmGlXoN8J/I60U5QFrTVaxV2PSQLaxQc30wFw/BWYYkAh3LeSQGWXxbyWhBEqBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T10:55:47.437060Z"},"content_sha256":"1d06df8d1a1e16fc2660b71df9c93733b7d63cda77950496fe2ed5ef8f7c3bde","schema_version":"1.0","event_id":"sha256:1d06df8d1a1e16fc2660b71df9c93733b7d63cda77950496fe2ed5ef8f7c3bde"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SJF5MVNU3DTMPZZQ6QRIAF6JFO/bundle.json","state_url":"https://pith.science/pith/SJF5MVNU3DTMPZZQ6QRIAF6JFO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SJF5MVNU3DTMPZZQ6QRIAF6JFO/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":"2026-08-23T10:55:47Z","links":{"resolver":"https://pith.science/pith/SJF5MVNU3DTMPZZQ6QRIAF6JFO","bundle":"https://pith.science/pith/SJF5MVNU3DTMPZZQ6QRIAF6JFO/bundle.json","state":"https://pith.science/pith/SJF5MVNU3DTMPZZQ6QRIAF6JFO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SJF5MVNU3DTMPZZQ6QRIAF6JFO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SJF5MVNU3DTMPZZQ6QRIAF6JFO","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":"e45b94c7e34937320c8bea466646ee2efb630a053af1e4b5a49e6579305e59fe","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-07-28T12:26:18Z","title_canon_sha256":"3f1dca66d93478b1fec7040036a4f91d332faa906d5fe4d096668f3bc9431704"},"schema_version":"1.0","source":{"id":"2307.15520","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.15520","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"arxiv_version","alias_value":"2307.15520v5","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.15520","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"pith_short_12","alias_value":"SJF5MVNU3DTM","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"pith_short_16","alias_value":"SJF5MVNU3DTMPZZQ","created_at":"2026-07-05T07:44:19Z"},{"alias_kind":"pith_short_8","alias_value":"SJF5MVNU","created_at":"2026-07-05T07:44:19Z"}],"graph_snapshots":[{"event_id":"sha256:1d06df8d1a1e16fc2660b71df9c93733b7d63cda77950496fe2ed5ef8f7c3bde","target":"graph","created_at":"2026-07-05T07:44:19Z","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/2307.15520/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Raman spectroscopy is widely used to assess the quality of 2D materials thin films. This report focuses on $\\rm{PtSe_2}$, a noble transition metal dichalcogenide which has the remarkable property to transit from a semi-conductor to a semi-metal with increasing layer number. While polycrystalline $\\rm{PtSe_2}$ can be grown with various crystalline qualities, getting insight into the monocrystalline intrinsic properties remains challenging. We report on the study of exfoliated 1 to 10 layers $\\rm{PtSe_2}$ by Raman spectroscopy, featuring record linewidth. The clear Raman signatures allow layer-t","authors_text":"Bernard Pla\\c{c}ais, Christophe Voisin, Dominique Carisetti, Emmanuel Baudin, Eva Desgu\\'e, Marin Tharrault, Pierre Legagneux","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-07-28T12:26:18Z","title":"Raman spectroscopy of monolayer to bulk PtSe2 exfoliated crystals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.15520","kind":"arxiv","version":5},"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":"sha256:2cd8da5f3db6880bba38f9cc6d8ce006be59c3132e909dc6cbd7499240161d57","target":"record","created_at":"2026-07-05T07:44:19Z","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":"e45b94c7e34937320c8bea466646ee2efb630a053af1e4b5a49e6579305e59fe","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-07-28T12:26:18Z","title_canon_sha256":"3f1dca66d93478b1fec7040036a4f91d332faa906d5fe4d096668f3bc9431704"},"schema_version":"1.0","source":{"id":"2307.15520","kind":"arxiv","version":5}},"canonical_sha256":"924bd655b4d8e6c7e730f4228017c92b9978b51801a45694520b81bc638c804a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"924bd655b4d8e6c7e730f4228017c92b9978b51801a45694520b81bc638c804a","first_computed_at":"2026-07-05T07:44:19.223877Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:44:19.223877Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wbM83ITUKi6mNjMHWfOtwno31xhJ2m5wO4uMOMHYfIk0aaKw7OYjMUkrgnqBg8NWyCC6+IYnjkYX4ZRm56hRCA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:44:19.224262Z","signed_message":"canonical_sha256_bytes"},"source_id":"2307.15520","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2cd8da5f3db6880bba38f9cc6d8ce006be59c3132e909dc6cbd7499240161d57","sha256:1d06df8d1a1e16fc2660b71df9c93733b7d63cda77950496fe2ed5ef8f7c3bde"],"state_sha256":"0631a4310bfadf84fee27898d721cd0e3fd9223cf34c0a326987e1fe716c8c23"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6LGY7tJT0uN5jDoE0yEaKqXvklzL7aiONCh+p9wnqI6r9vcu3ymwXhDEEXginUCwQrDHXku0xd6hXLA1MyGXDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T10:55:47.441190Z","bundle_sha256":"5994b7145bba919b338ff29b1315864ca0b8ba23c7644f6443ff95888c8d3c9e"}}