{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:TQWD2N5XJNEURQAONC6M6XUMDT","short_pith_number":"pith:TQWD2N5X","canonical_record":{"source":{"id":"1604.03907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-13T18:38:54Z","cross_cats_sorted":[],"title_canon_sha256":"39f42f354bd6dd0c98c35782c50dc19b77fe56942642d6149f045a2514c154f2","abstract_canon_sha256":"6b3374bd85e4e6203aa15b4bf93652f51ace90f028d2869b29ac5d07a1d9ac78"},"schema_version":"1.0"},"canonical_sha256":"9c2c3d37b74b4948c00e68bccf5e8c1ce528d81b0781a78fe258f5dbfd7d733a","source":{"kind":"arxiv","id":"1604.03907","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.03907","created_at":"2026-05-18T00:17:13Z"},{"alias_kind":"arxiv_version","alias_value":"1604.03907v1","created_at":"2026-05-18T00:17:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.03907","created_at":"2026-05-18T00:17:13Z"},{"alias_kind":"pith_short_12","alias_value":"TQWD2N5XJNEU","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"TQWD2N5XJNEURQAO","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"TQWD2N5X","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:TQWD2N5XJNEURQAONC6M6XUMDT","target":"record","payload":{"canonical_record":{"source":{"id":"1604.03907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-13T18:38:54Z","cross_cats_sorted":[],"title_canon_sha256":"39f42f354bd6dd0c98c35782c50dc19b77fe56942642d6149f045a2514c154f2","abstract_canon_sha256":"6b3374bd85e4e6203aa15b4bf93652f51ace90f028d2869b29ac5d07a1d9ac78"},"schema_version":"1.0"},"canonical_sha256":"9c2c3d37b74b4948c00e68bccf5e8c1ce528d81b0781a78fe258f5dbfd7d733a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:13.712293Z","signature_b64":"xpLPKUQ6ddyqWFDieP64/e1hfogDRkiItcOMYjI0RHPtBL3CRG1O8n8ARYLK34cQEUQ5XUmde5DnTiApZ+/sCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9c2c3d37b74b4948c00e68bccf5e8c1ce528d81b0781a78fe258f5dbfd7d733a","last_reissued_at":"2026-05-18T00:17:13.711595Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:13.711595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.03907","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":"2026-05-18T00:17:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bUb+P2k/U7+JoB4a8VDAJOizSv+Hd50dj1Lihk/Ht2H1T7pU3gYdw8+ChfmvwH1Am1UrwqaehJXWZNr6twWmBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:49:58.619331Z"},"content_sha256":"9a5194143e072ca097d4fc175762f52a72ca9750a2e385f30e760ae2fcbff466","schema_version":"1.0","event_id":"sha256:9a5194143e072ca097d4fc175762f52a72ca9750a2e385f30e760ae2fcbff466"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:TQWD2N5XJNEURQAONC6M6XUMDT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Temperature-dependent Hysteresis in MAPbI3 Solar Cells","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"David Cahen, Gary Hodes, Henry J. Snaith, Igal Levine, Jacob Tse-Wei Wang, Nobuya Sakai, Pabitra K. Nayak, Sabyasachi Mukhopadhyay, Stephan Van Reenen, Thomas M. Brenner","submitted_at":"2016-04-13T18:38:54Z","abstract_excerpt":"Hysteresis in the current-voltage characteristics of hybrid organic-inorganic perovskite-based solar cells is one of the fundamental aspects of these cells that we do not understand well. One possible cause, suggested for the hysteresis, is polarization of the perovskite layer under applied voltage and illumination bias, due to ion migration within the perovskite. To study this problem systemically current-voltage characteristics of both regular (light incident through the electron conducting contact) and so-called inverted (light incident through the hole conducting contact) perovskite cells "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.03907","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":"2026-05-18T00:17:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sm4CUBfRA1FUlrDsTTYoOQkurW+H/CCaNlBMz8kG8hgizcF1RoSvPb/p7A9iiT21QnHjEd/TI6e37MpAAAc0Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:49:58.619926Z"},"content_sha256":"2a96097c5160cb13e255263497c49302ec16b5c2d2e7b5744189068cfc9eb1f4","schema_version":"1.0","event_id":"sha256:2a96097c5160cb13e255263497c49302ec16b5c2d2e7b5744189068cfc9eb1f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TQWD2N5XJNEURQAONC6M6XUMDT/bundle.json","state_url":"https://pith.science/pith/TQWD2N5XJNEURQAONC6M6XUMDT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TQWD2N5XJNEURQAONC6M6XUMDT/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":"2026-06-05T01:49:58Z","links":{"resolver":"https://pith.science/pith/TQWD2N5XJNEURQAONC6M6XUMDT","bundle":"https://pith.science/pith/TQWD2N5XJNEURQAONC6M6XUMDT/bundle.json","state":"https://pith.science/pith/TQWD2N5XJNEURQAONC6M6XUMDT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TQWD2N5XJNEURQAONC6M6XUMDT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:TQWD2N5XJNEURQAONC6M6XUMDT","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":"6b3374bd85e4e6203aa15b4bf93652f51ace90f028d2869b29ac5d07a1d9ac78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-13T18:38:54Z","title_canon_sha256":"39f42f354bd6dd0c98c35782c50dc19b77fe56942642d6149f045a2514c154f2"},"schema_version":"1.0","source":{"id":"1604.03907","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.03907","created_at":"2026-05-18T00:17:13Z"},{"alias_kind":"arxiv_version","alias_value":"1604.03907v1","created_at":"2026-05-18T00:17:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.03907","created_at":"2026-05-18T00:17:13Z"},{"alias_kind":"pith_short_12","alias_value":"TQWD2N5XJNEU","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"TQWD2N5XJNEURQAO","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"TQWD2N5X","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:2a96097c5160cb13e255263497c49302ec16b5c2d2e7b5744189068cfc9eb1f4","target":"graph","created_at":"2026-05-18T00:17:13Z","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":"Hysteresis in the current-voltage characteristics of hybrid organic-inorganic perovskite-based solar cells is one of the fundamental aspects of these cells that we do not understand well. One possible cause, suggested for the hysteresis, is polarization of the perovskite layer under applied voltage and illumination bias, due to ion migration within the perovskite. To study this problem systemically current-voltage characteristics of both regular (light incident through the electron conducting contact) and so-called inverted (light incident through the hole conducting contact) perovskite cells ","authors_text":"David Cahen, Gary Hodes, Henry J. Snaith, Igal Levine, Jacob Tse-Wei Wang, Nobuya Sakai, Pabitra K. Nayak, Sabyasachi Mukhopadhyay, Stephan Van Reenen, Thomas M. Brenner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-13T18:38:54Z","title":"Temperature-dependent Hysteresis in MAPbI3 Solar Cells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.03907","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":"sha256:9a5194143e072ca097d4fc175762f52a72ca9750a2e385f30e760ae2fcbff466","target":"record","created_at":"2026-05-18T00:17:13Z","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":"6b3374bd85e4e6203aa15b4bf93652f51ace90f028d2869b29ac5d07a1d9ac78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-13T18:38:54Z","title_canon_sha256":"39f42f354bd6dd0c98c35782c50dc19b77fe56942642d6149f045a2514c154f2"},"schema_version":"1.0","source":{"id":"1604.03907","kind":"arxiv","version":1}},"canonical_sha256":"9c2c3d37b74b4948c00e68bccf5e8c1ce528d81b0781a78fe258f5dbfd7d733a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9c2c3d37b74b4948c00e68bccf5e8c1ce528d81b0781a78fe258f5dbfd7d733a","first_computed_at":"2026-05-18T00:17:13.711595Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:13.711595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xpLPKUQ6ddyqWFDieP64/e1hfogDRkiItcOMYjI0RHPtBL3CRG1O8n8ARYLK34cQEUQ5XUmde5DnTiApZ+/sCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:13.712293Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.03907","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9a5194143e072ca097d4fc175762f52a72ca9750a2e385f30e760ae2fcbff466","sha256:2a96097c5160cb13e255263497c49302ec16b5c2d2e7b5744189068cfc9eb1f4"],"state_sha256":"c5b1a23a1bea7afafac47a40c69145a2f497847d229a9420626bbcba9f394e52"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8e2Sb2EUe2jD6xXQczkFWIxcTpOnmxwxKHC7wP6IkZP0I7/qnLnK18Drvklvb1f93nqHIRJw7vOL+hwbuQ+CBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T01:49:58.623064Z","bundle_sha256":"efae934a1bd38714232c0271865193846adc2ba3d5c3bb86e5696d94d5e54191"}}