{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:43SUERQPHZ3KKUDZ26VAA4ITKC","short_pith_number":"pith:43SUERQP","canonical_record":{"source":{"id":"1901.04662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-15T04:56:38Z","cross_cats_sorted":[],"title_canon_sha256":"e690297ee7c8e55da10eb6e2ca95d5bfa434eb237be650a118d92f587775253a","abstract_canon_sha256":"0eff4f2a8789f6f53d797fdd39560c8adf3a526e8d23081823280e305ed4660b"},"schema_version":"1.0"},"canonical_sha256":"e6e542460f3e76a55079d7aa00711350b4dd9fae10a88915de0a70059388fc85","source":{"kind":"arxiv","id":"1901.04662","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04662","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04662v1","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04662","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"pith_short_12","alias_value":"43SUERQPHZ3K","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"43SUERQPHZ3KKUDZ","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"43SUERQP","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:43SUERQPHZ3KKUDZ26VAA4ITKC","target":"record","payload":{"canonical_record":{"source":{"id":"1901.04662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-15T04:56:38Z","cross_cats_sorted":[],"title_canon_sha256":"e690297ee7c8e55da10eb6e2ca95d5bfa434eb237be650a118d92f587775253a","abstract_canon_sha256":"0eff4f2a8789f6f53d797fdd39560c8adf3a526e8d23081823280e305ed4660b"},"schema_version":"1.0"},"canonical_sha256":"e6e542460f3e76a55079d7aa00711350b4dd9fae10a88915de0a70059388fc85","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:57.723906Z","signature_b64":"xe7pYKG7lnkhbpxFdMvw71ATRjCvQYDLLrMqN4H8vOek2RFpz3S79Or8Seyq5ezV5eLOeDNnnWt9z2gnFmMSAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6e542460f3e76a55079d7aa00711350b4dd9fae10a88915de0a70059388fc85","last_reissued_at":"2026-05-17T23:44:57.723224Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:57.723224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.04662","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":"2026-05-17T23:44:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RPryupCCX6mzZqSvbVRs8eZdL1AFh6WuP1Ct4Ns4BlGNowmgRcoBdxuLd+mLOLMUqMud+zlRVgFGWMXza7XJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T13:41:13.421422Z"},"content_sha256":"568ef28cbdb7d38d5457e4cfeddfdb4147d6ec2cb38673a68c8b0cb4b979d90f","schema_version":"1.0","event_id":"sha256:568ef28cbdb7d38d5457e4cfeddfdb4147d6ec2cb38673a68c8b0cb4b979d90f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:43SUERQPHZ3KKUDZ26VAA4ITKC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superconductivity in the WP single crystal","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Changli Yang, Guangtong Liu, Hengcan Zhao, Jiahao Zhang, Jian Cui, Jianlin Luo, Jinguang Cheng, Li Lu, Peijie Sun, Pengfei Shan, Wei Wu, Yu Sui, Zhenzheng Zhao, Ziyi Liu","submitted_at":"2019-01-15T04:56:38Z","abstract_excerpt":"We report the discovery of superconductivity on high-quality single crystals of transition-metal pnictides WP grown by chemical vapor transport (CVT) method. Bulk superconductivity is observed at Tc = 0.84 K under ambient pressure by electrical resistivity and AC magnetic susceptibility measurements. The effects of magnetic field on the superconducting transitions are studied, leading to a large anisotropy parameter around 2 with the in-plane and out-of-plane upper critical fields of Hc2=172 Oe and Hc2\\=85 Oe, respectively. Our finding demonstrates that WP is the first superconductor in 5d tra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04662","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":"2026-05-17T23:44:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JsXMOV5HeD7P4aObm4kup8ZV/7uvIoiKEVDhbzmJW3AcDD4akdGCjS/sU+vPglbBabkTbI7VvV+3jpWko55XCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T13:41:13.422176Z"},"content_sha256":"7ccf4c637015232ce78bd7e2f611762921b1aac171e59305f9bb77c8e106fadf","schema_version":"1.0","event_id":"sha256:7ccf4c637015232ce78bd7e2f611762921b1aac171e59305f9bb77c8e106fadf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/43SUERQPHZ3KKUDZ26VAA4ITKC/bundle.json","state_url":"https://pith.science/pith/43SUERQPHZ3KKUDZ26VAA4ITKC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/43SUERQPHZ3KKUDZ26VAA4ITKC/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":"2026-05-23T13:41:13Z","links":{"resolver":"https://pith.science/pith/43SUERQPHZ3KKUDZ26VAA4ITKC","bundle":"https://pith.science/pith/43SUERQPHZ3KKUDZ26VAA4ITKC/bundle.json","state":"https://pith.science/pith/43SUERQPHZ3KKUDZ26VAA4ITKC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/43SUERQPHZ3KKUDZ26VAA4ITKC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:43SUERQPHZ3KKUDZ26VAA4ITKC","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":"0eff4f2a8789f6f53d797fdd39560c8adf3a526e8d23081823280e305ed4660b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-15T04:56:38Z","title_canon_sha256":"e690297ee7c8e55da10eb6e2ca95d5bfa434eb237be650a118d92f587775253a"},"schema_version":"1.0","source":{"id":"1901.04662","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04662","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04662v1","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04662","created_at":"2026-05-17T23:44:57Z"},{"alias_kind":"pith_short_12","alias_value":"43SUERQPHZ3K","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"43SUERQPHZ3KKUDZ","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"43SUERQP","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:7ccf4c637015232ce78bd7e2f611762921b1aac171e59305f9bb77c8e106fadf","target":"graph","created_at":"2026-05-17T23:44:57Z","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":"We report the discovery of superconductivity on high-quality single crystals of transition-metal pnictides WP grown by chemical vapor transport (CVT) method. Bulk superconductivity is observed at Tc = 0.84 K under ambient pressure by electrical resistivity and AC magnetic susceptibility measurements. The effects of magnetic field on the superconducting transitions are studied, leading to a large anisotropy parameter around 2 with the in-plane and out-of-plane upper critical fields of Hc2=172 Oe and Hc2\\=85 Oe, respectively. Our finding demonstrates that WP is the first superconductor in 5d tra","authors_text":"Changli Yang, Guangtong Liu, Hengcan Zhao, Jiahao Zhang, Jian Cui, Jianlin Luo, Jinguang Cheng, Li Lu, Peijie Sun, Pengfei Shan, Wei Wu, Yu Sui, Zhenzheng Zhao, Ziyi Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-15T04:56:38Z","title":"Superconductivity in the WP single crystal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04662","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":"sha256:568ef28cbdb7d38d5457e4cfeddfdb4147d6ec2cb38673a68c8b0cb4b979d90f","target":"record","created_at":"2026-05-17T23:44:57Z","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":"0eff4f2a8789f6f53d797fdd39560c8adf3a526e8d23081823280e305ed4660b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-01-15T04:56:38Z","title_canon_sha256":"e690297ee7c8e55da10eb6e2ca95d5bfa434eb237be650a118d92f587775253a"},"schema_version":"1.0","source":{"id":"1901.04662","kind":"arxiv","version":1}},"canonical_sha256":"e6e542460f3e76a55079d7aa00711350b4dd9fae10a88915de0a70059388fc85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6e542460f3e76a55079d7aa00711350b4dd9fae10a88915de0a70059388fc85","first_computed_at":"2026-05-17T23:44:57.723224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:57.723224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xe7pYKG7lnkhbpxFdMvw71ATRjCvQYDLLrMqN4H8vOek2RFpz3S79Or8Seyq5ezV5eLOeDNnnWt9z2gnFmMSAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:57.723906Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.04662","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:568ef28cbdb7d38d5457e4cfeddfdb4147d6ec2cb38673a68c8b0cb4b979d90f","sha256:7ccf4c637015232ce78bd7e2f611762921b1aac171e59305f9bb77c8e106fadf"],"state_sha256":"986d834955fa286266e6299190b2ce101b0b07d8548fb797517d3d779248eb36"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvrXeHPGrxGhoXrNZfL2JXgkyP1Pphtkk9X9uDiR7mer4otRxS+Xs0vRlALJ46xVmqfJEfTKAdt+eyCZtI0HCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T13:41:13.426165Z","bundle_sha256":"6a00336b92989636a9943f37a9640a0c928ade77306e10e350bd3e075195066c"}}