{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:TQGPCRODNUGHI6AKWE3PUCEAEH","short_pith_number":"pith:TQGPCROD","canonical_record":{"source":{"id":"1705.10070","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-29T08:36:57Z","cross_cats_sorted":[],"title_canon_sha256":"6ccd1168ec36a973d98c30100134fadac5498a452f7a878d3b3dc13ce3183479","abstract_canon_sha256":"431ca7d68b1a6c1ea0957dc547d6961bd0845d68b71a504a377cf9132287c774"},"schema_version":"1.0"},"canonical_sha256":"9c0cf145c36d0c74780ab136fa088021ef8fdc4046ab6609adea57927fe547f2","source":{"kind":"arxiv","id":"1705.10070","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.10070","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"arxiv_version","alias_value":"1705.10070v2","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.10070","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"pith_short_12","alias_value":"TQGPCRODNUGH","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"TQGPCRODNUGHI6AK","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"TQGPCROD","created_at":"2026-07-05T01:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:TQGPCRODNUGHI6AKWE3PUCEAEH","target":"record","payload":{"canonical_record":{"source":{"id":"1705.10070","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-29T08:36:57Z","cross_cats_sorted":[],"title_canon_sha256":"6ccd1168ec36a973d98c30100134fadac5498a452f7a878d3b3dc13ce3183479","abstract_canon_sha256":"431ca7d68b1a6c1ea0957dc547d6961bd0845d68b71a504a377cf9132287c774"},"schema_version":"1.0"},"canonical_sha256":"9c0cf145c36d0c74780ab136fa088021ef8fdc4046ab6609adea57927fe547f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:26:47.544167Z","signature_b64":"q7hXFWmiZQrEP11t2W28sLGfMEbwTZQmpy+f2uta1Ivlj6I+tn3ZHYzVCp42/Bu0teuStxWPGYoMRwPpFS7HAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9c0cf145c36d0c74780ab136fa088021ef8fdc4046ab6609adea57927fe547f2","last_reissued_at":"2026-07-05T01:26:47.543704Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:26:47.543704Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.10070","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:26:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/dJEQ1Qzfep8l40HwUUvIQ/0ytKBNi1rAGTpXlM5uPe8TVNt767kVMnyHOFelr39jz1ryNgZmY4JMQD0/jYvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T07:16:28.068878Z"},"content_sha256":"5b09eeb17fe219a076d795173b521c7ac34c7058cef47c73d90f78f5c19c5e2e","schema_version":"1.0","event_id":"sha256:5b09eeb17fe219a076d795173b521c7ac34c7058cef47c73d90f78f5c19c5e2e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:TQGPCRODNUGHI6AKWE3PUCEAEH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Accurate and efficient band gap predictions of metal halide perovskites using the DFT-1/2 method: GW accuracy with DFT expense","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Peter Bobbert, Shuxia Tao, Xi Cao","submitted_at":"2017-05-29T08:36:57Z","abstract_excerpt":"The outstanding optoelectronics and photovoltaic properties of metal halide perovskites, including high carrier motilities, low carrier recombination rates, and the tunable spectral absorption range are attributed to the unique electronic properties of these materials. While DFT provides reliable structures and stabilities of perovskites, it performs poorly in electronic structure prediction. The relativistic GW approximation has been demonstrated to be able to capture electronic structure accurately, but at an extremely high computational cost. Here we report efficient and accurate band gap c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.10070","kind":"arxiv","version":2},"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/1705.10070/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":"2026-07-05T01:26:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1mAEByeBqpYMKbjz8b/KQkPnodxkyC6KyRcFYkf6TcaDCgAVlubGk4Q9iKZTh6xAi0MMPIqaqbrFVrbpLIaQAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T07:16:28.071005Z"},"content_sha256":"1c8601a224c1095d5a0cc1580e7ec6fec68daac987bee2ad25f271fbd137a0ac","schema_version":"1.0","event_id":"sha256:1c8601a224c1095d5a0cc1580e7ec6fec68daac987bee2ad25f271fbd137a0ac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TQGPCRODNUGHI6AKWE3PUCEAEH/bundle.json","state_url":"https://pith.science/pith/TQGPCRODNUGHI6AKWE3PUCEAEH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TQGPCRODNUGHI6AKWE3PUCEAEH/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":"2026-08-01T07:16:28Z","links":{"resolver":"https://pith.science/pith/TQGPCRODNUGHI6AKWE3PUCEAEH","bundle":"https://pith.science/pith/TQGPCRODNUGHI6AKWE3PUCEAEH/bundle.json","state":"https://pith.science/pith/TQGPCRODNUGHI6AKWE3PUCEAEH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TQGPCRODNUGHI6AKWE3PUCEAEH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TQGPCRODNUGHI6AKWE3PUCEAEH","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":"431ca7d68b1a6c1ea0957dc547d6961bd0845d68b71a504a377cf9132287c774","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-29T08:36:57Z","title_canon_sha256":"6ccd1168ec36a973d98c30100134fadac5498a452f7a878d3b3dc13ce3183479"},"schema_version":"1.0","source":{"id":"1705.10070","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.10070","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"arxiv_version","alias_value":"1705.10070v2","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.10070","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"pith_short_12","alias_value":"TQGPCRODNUGH","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"TQGPCRODNUGHI6AK","created_at":"2026-07-05T01:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"TQGPCROD","created_at":"2026-07-05T01:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:1c8601a224c1095d5a0cc1580e7ec6fec68daac987bee2ad25f271fbd137a0ac","target":"graph","created_at":"2026-07-05T01:26:47Z","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/1705.10070/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The outstanding optoelectronics and photovoltaic properties of metal halide perovskites, including high carrier motilities, low carrier recombination rates, and the tunable spectral absorption range are attributed to the unique electronic properties of these materials. While DFT provides reliable structures and stabilities of perovskites, it performs poorly in electronic structure prediction. The relativistic GW approximation has been demonstrated to be able to capture electronic structure accurately, but at an extremely high computational cost. Here we report efficient and accurate band gap c","authors_text":"Peter Bobbert, Shuxia Tao, Xi Cao","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-29T08:36:57Z","title":"Accurate and efficient band gap predictions of metal halide perovskites using the DFT-1/2 method: GW accuracy with DFT expense"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.10070","kind":"arxiv","version":2},"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":"sha256:5b09eeb17fe219a076d795173b521c7ac34c7058cef47c73d90f78f5c19c5e2e","target":"record","created_at":"2026-07-05T01:26:47Z","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":"431ca7d68b1a6c1ea0957dc547d6961bd0845d68b71a504a377cf9132287c774","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-05-29T08:36:57Z","title_canon_sha256":"6ccd1168ec36a973d98c30100134fadac5498a452f7a878d3b3dc13ce3183479"},"schema_version":"1.0","source":{"id":"1705.10070","kind":"arxiv","version":2}},"canonical_sha256":"9c0cf145c36d0c74780ab136fa088021ef8fdc4046ab6609adea57927fe547f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9c0cf145c36d0c74780ab136fa088021ef8fdc4046ab6609adea57927fe547f2","first_computed_at":"2026-07-05T01:26:47.543704Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:26:47.543704Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q7hXFWmiZQrEP11t2W28sLGfMEbwTZQmpy+f2uta1Ivlj6I+tn3ZHYzVCp42/Bu0teuStxWPGYoMRwPpFS7HAg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:26:47.544167Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.10070","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b09eeb17fe219a076d795173b521c7ac34c7058cef47c73d90f78f5c19c5e2e","sha256:1c8601a224c1095d5a0cc1580e7ec6fec68daac987bee2ad25f271fbd137a0ac"],"state_sha256":"099a2386ba13137b910f45b6d3ac90dccee3fa77ee5952f3904637156daf573b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"91xpTgGIRa+ybH4QNZEyMyL97EtPL4tOoW3xGY5bdZeTMC93iT0sKhfQROyQ0V5fafKENccDJxzHaUh0Eoc+DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T07:16:28.074771Z","bundle_sha256":"8c44d16794d6ce54339013748df657b85d2024bd75ccdbbf5dd7ceb1ce746607"}}