{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:VPMH2VQRJXCXMINNRJH3AQMWVR","short_pith_number":"pith:VPMH2VQR","canonical_record":{"source":{"id":"2003.10741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-24T09:58:41Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"bb99309984e3a92f87575bbbcefa95f9f847de5df50bd2b9a124ceea84e567e9","abstract_canon_sha256":"1a32f7cd701d95809c1dcb6d67c2687c81633297af99cc519f8c1aac0d30e32e"},"schema_version":"1.0"},"canonical_sha256":"abd87d56114dc57621ad8a4fb04196ac73277f972acdb18383b7a9389beef3e7","source":{"kind":"arxiv","id":"2003.10741","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.10741","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"arxiv_version","alias_value":"2003.10741v1","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.10741","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_12","alias_value":"VPMH2VQRJXCX","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_16","alias_value":"VPMH2VQRJXCXMINN","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_8","alias_value":"VPMH2VQR","created_at":"2026-07-05T01:01:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:VPMH2VQRJXCXMINNRJH3AQMWVR","target":"record","payload":{"canonical_record":{"source":{"id":"2003.10741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-24T09:58:41Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"bb99309984e3a92f87575bbbcefa95f9f847de5df50bd2b9a124ceea84e567e9","abstract_canon_sha256":"1a32f7cd701d95809c1dcb6d67c2687c81633297af99cc519f8c1aac0d30e32e"},"schema_version":"1.0"},"canonical_sha256":"abd87d56114dc57621ad8a4fb04196ac73277f972acdb18383b7a9389beef3e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:01:16.495021Z","signature_b64":"nvrKRhqHUJ+TL2hFpVPaK3Gf/azxKEHEaCoVef3VM5CwRgOidG93yAB2x0XLz05oDNV4IUbWsz6x6kqxbCnmCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abd87d56114dc57621ad8a4fb04196ac73277f972acdb18383b7a9389beef3e7","last_reissued_at":"2026-07-05T01:01:16.494561Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:01:16.494561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.10741","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":"2026-07-05T01:01:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0n3/cpHmIxxQnAY9FGueZknKW7Jm3KG5FluUfeakz+n7rnOOmPag4LOP4OemsBKrmMPu8uoo3GAN5Vko2+2eBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:28:54.397846Z"},"content_sha256":"03215311711c5009364570df8430b7c342510a756e4026517a7e592a761ac0dd","schema_version":"1.0","event_id":"sha256:03215311711c5009364570df8430b7c342510a756e4026517a7e592a761ac0dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:VPMH2VQRJXCXMINNRJH3AQMWVR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical signatures of phase transitions and structural modulation in elemental tellurium under pressure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexander A. Tsirlin, Diego Rodriguez, Ece Uykur, Kaya Kobayashi, Martin Dressel, Takeshi Takahashi, Teppei Ueno, Tobias Biesner","submitted_at":"2020-03-24T09:58:41Z","abstract_excerpt":"A room-temperature infrared spectroscopy study of elemental tellurium at pressures up to 8.44 GPa in the energy range 0.015-2 eV is reported. Optical signatures of the high-pressure polymorphs are investigated and compared to the results of density-functional band-structure calculations. A Drude peak is first seen in the optical conductivity around 3.5 GPa indicating a semiconductor-to-metal transition within trigonal Te-I. A sharp increase in the Drude spectral weight and dc-conductivity around 4.3 GPa signals the transformation toward the triclinic Te-II polymorph. An absorption peak around "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.10741","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/2003.10741/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":"2026-07-05T01:01:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R6jRuJ1uLR4IFA8Z8kJFBxaz9ynTlhkOsgOyC9ZV9payaDGQgXtnKOlze7Sj5y+GDoFMgn7SDzX2W67PDCFiBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:28:54.398223Z"},"content_sha256":"61e154b2c27d545e25569aa19d2707db3857f5c816378c7632e8f41af358477f","schema_version":"1.0","event_id":"sha256:61e154b2c27d545e25569aa19d2707db3857f5c816378c7632e8f41af358477f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VPMH2VQRJXCXMINNRJH3AQMWVR/bundle.json","state_url":"https://pith.science/pith/VPMH2VQRJXCXMINNRJH3AQMWVR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VPMH2VQRJXCXMINNRJH3AQMWVR/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":"2026-07-07T12:28:54Z","links":{"resolver":"https://pith.science/pith/VPMH2VQRJXCXMINNRJH3AQMWVR","bundle":"https://pith.science/pith/VPMH2VQRJXCXMINNRJH3AQMWVR/bundle.json","state":"https://pith.science/pith/VPMH2VQRJXCXMINNRJH3AQMWVR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VPMH2VQRJXCXMINNRJH3AQMWVR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:VPMH2VQRJXCXMINNRJH3AQMWVR","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":"1a32f7cd701d95809c1dcb6d67c2687c81633297af99cc519f8c1aac0d30e32e","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-24T09:58:41Z","title_canon_sha256":"bb99309984e3a92f87575bbbcefa95f9f847de5df50bd2b9a124ceea84e567e9"},"schema_version":"1.0","source":{"id":"2003.10741","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.10741","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"arxiv_version","alias_value":"2003.10741v1","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.10741","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_12","alias_value":"VPMH2VQRJXCX","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_16","alias_value":"VPMH2VQRJXCXMINN","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_8","alias_value":"VPMH2VQR","created_at":"2026-07-05T01:01:16Z"}],"graph_snapshots":[{"event_id":"sha256:61e154b2c27d545e25569aa19d2707db3857f5c816378c7632e8f41af358477f","target":"graph","created_at":"2026-07-05T01:01:16Z","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/2003.10741/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A room-temperature infrared spectroscopy study of elemental tellurium at pressures up to 8.44 GPa in the energy range 0.015-2 eV is reported. Optical signatures of the high-pressure polymorphs are investigated and compared to the results of density-functional band-structure calculations. A Drude peak is first seen in the optical conductivity around 3.5 GPa indicating a semiconductor-to-metal transition within trigonal Te-I. A sharp increase in the Drude spectral weight and dc-conductivity around 4.3 GPa signals the transformation toward the triclinic Te-II polymorph. An absorption peak around ","authors_text":"Alexander A. Tsirlin, Diego Rodriguez, Ece Uykur, Kaya Kobayashi, Martin Dressel, Takeshi Takahashi, Teppei Ueno, Tobias Biesner","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-24T09:58:41Z","title":"Optical signatures of phase transitions and structural modulation in elemental tellurium under pressure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.10741","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":"sha256:03215311711c5009364570df8430b7c342510a756e4026517a7e592a761ac0dd","target":"record","created_at":"2026-07-05T01:01:16Z","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":"1a32f7cd701d95809c1dcb6d67c2687c81633297af99cc519f8c1aac0d30e32e","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-03-24T09:58:41Z","title_canon_sha256":"bb99309984e3a92f87575bbbcefa95f9f847de5df50bd2b9a124ceea84e567e9"},"schema_version":"1.0","source":{"id":"2003.10741","kind":"arxiv","version":1}},"canonical_sha256":"abd87d56114dc57621ad8a4fb04196ac73277f972acdb18383b7a9389beef3e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abd87d56114dc57621ad8a4fb04196ac73277f972acdb18383b7a9389beef3e7","first_computed_at":"2026-07-05T01:01:16.494561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:01:16.494561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nvrKRhqHUJ+TL2hFpVPaK3Gf/azxKEHEaCoVef3VM5CwRgOidG93yAB2x0XLz05oDNV4IUbWsz6x6kqxbCnmCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:01:16.495021Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.10741","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03215311711c5009364570df8430b7c342510a756e4026517a7e592a761ac0dd","sha256:61e154b2c27d545e25569aa19d2707db3857f5c816378c7632e8f41af358477f"],"state_sha256":"8f6624314fc33b33ff09dba049ed80f06e97fbe3ea6780978725ceb508294545"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PYDfBpeFr2m0tUfU2T86pDfyJFbo8X7jNl3S7/HjZcKUZcvx0qgdRtHyGpZsN/CUq8FRNZgk2XVnt81+Hbm6Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T12:28:54.400185Z","bundle_sha256":"8ca38be50bf9052ce74ec45af2545b9c3f6d507c8a6c017718223faff005c6e9"}}