{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:6SWLWEHNC7QUCQPMKZLIX27FNY","short_pith_number":"pith:6SWLWEHN","canonical_record":{"source":{"id":"2208.10678","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-08-23T01:57:50Z","cross_cats_sorted":[],"title_canon_sha256":"9e9994290198bfca0d2701de019a3d2969962243a3969c9b1cb6b9a2f25ae4be","abstract_canon_sha256":"62b3978e62278edcb31f710e66dcb0fd094b0eb9e3ee7db15e8fc1025aa8e726"},"schema_version":"1.0"},"canonical_sha256":"f4acbb10ed17e14141ec56568bebe56e31965016369aaccd3e2e4817cbb92b44","source":{"kind":"arxiv","id":"2208.10678","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.10678","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"arxiv_version","alias_value":"2208.10678v1","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.10678","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"pith_short_12","alias_value":"6SWLWEHNC7QU","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"pith_short_16","alias_value":"6SWLWEHNC7QUCQPM","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"pith_short_8","alias_value":"6SWLWEHN","created_at":"2026-07-05T04:50:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:6SWLWEHNC7QUCQPMKZLIX27FNY","target":"record","payload":{"canonical_record":{"source":{"id":"2208.10678","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-08-23T01:57:50Z","cross_cats_sorted":[],"title_canon_sha256":"9e9994290198bfca0d2701de019a3d2969962243a3969c9b1cb6b9a2f25ae4be","abstract_canon_sha256":"62b3978e62278edcb31f710e66dcb0fd094b0eb9e3ee7db15e8fc1025aa8e726"},"schema_version":"1.0"},"canonical_sha256":"f4acbb10ed17e14141ec56568bebe56e31965016369aaccd3e2e4817cbb92b44","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:50:38.468627Z","signature_b64":"SkewcZe0VJ/U2W8da8o+lS/O46u6i01P87B1E/KPv3mCUHRqh9xu4Fa2/VRFM0silyq3IVxRSg6ygZCE8Fr/Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f4acbb10ed17e14141ec56568bebe56e31965016369aaccd3e2e4817cbb92b44","last_reissued_at":"2026-07-05T04:50:38.468223Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:50:38.468223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2208.10678","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":"2026-07-05T04:50:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Bt76S5xWNO6zPXJ1AK3Uz/Ar5PzLMn5nJo+BH5CbPG01BKn2Mir9EQQczA6LgZEZvc+Tst05G8nbp6aIpU/AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:11:09.997223Z"},"content_sha256":"2a415c1d9a5a05bde81267b0af707878cac0f80d511ace06d39203a8741d2588","schema_version":"1.0","event_id":"sha256:2a415c1d9a5a05bde81267b0af707878cac0f80d511ace06d39203a8741d2588"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:6SWLWEHNC7QUCQPMKZLIX27FNY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Theory of Nb-Zr Alloy Superconductivity and First Experimental Demonstration for Superconducting Radio-Frequency Cavity Applications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Ajinkya C. Hire, Ben Francis, David A. Muller, Mark K. Transtrum, Matthias U. Liepe, Nathan S. Sitaraman, Richard Hennig, Thomas Oseroff, Tom\\'as A. Arias, Zeming Sun, Zhaslan Baraissov","submitted_at":"2022-08-23T01:57:50Z","abstract_excerpt":"Niobium-zirconium (Nb-Zr) alloy is an old superconductor that is a promising new candidate for superconducting radio-frequency (SRF) cavity applications. Using density-functional and Eliashberg theories, we show that addition of Zr to a Nb surface in small concentrations increases the critical temperature $T_c$ and improves other superconducting properties. Furthermore, we calculate $T_c$ for Nb-Zr alloys across a broad range of Zr concentrations, showing good agreement with the literature for disordered alloys as well as the potential for significantly higher $T_c$ in ordered alloys near 75%N"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.10678","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/2208.10678/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":"2026-07-05T04:50:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MdDMStM3j45K/y0phk5YseKczunCBKZSXQ0crVX37LZtR/uFA7FTCLi2D6rr/9IOJ7uj5Emu9FDQSiHaEYedDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:11:09.999095Z"},"content_sha256":"84eb2dbe465c6e9ac44d6f10062bc3861d5b164c706cde48ae3ea44ac6422732","schema_version":"1.0","event_id":"sha256:84eb2dbe465c6e9ac44d6f10062bc3861d5b164c706cde48ae3ea44ac6422732"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6SWLWEHNC7QUCQPMKZLIX27FNY/bundle.json","state_url":"https://pith.science/pith/6SWLWEHNC7QUCQPMKZLIX27FNY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6SWLWEHNC7QUCQPMKZLIX27FNY/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":"2026-08-14T15:11:10Z","links":{"resolver":"https://pith.science/pith/6SWLWEHNC7QUCQPMKZLIX27FNY","bundle":"https://pith.science/pith/6SWLWEHNC7QUCQPMKZLIX27FNY/bundle.json","state":"https://pith.science/pith/6SWLWEHNC7QUCQPMKZLIX27FNY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6SWLWEHNC7QUCQPMKZLIX27FNY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:6SWLWEHNC7QUCQPMKZLIX27FNY","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":"62b3978e62278edcb31f710e66dcb0fd094b0eb9e3ee7db15e8fc1025aa8e726","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-08-23T01:57:50Z","title_canon_sha256":"9e9994290198bfca0d2701de019a3d2969962243a3969c9b1cb6b9a2f25ae4be"},"schema_version":"1.0","source":{"id":"2208.10678","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2208.10678","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"arxiv_version","alias_value":"2208.10678v1","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.10678","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"pith_short_12","alias_value":"6SWLWEHNC7QU","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"pith_short_16","alias_value":"6SWLWEHNC7QUCQPM","created_at":"2026-07-05T04:50:38Z"},{"alias_kind":"pith_short_8","alias_value":"6SWLWEHN","created_at":"2026-07-05T04:50:38Z"}],"graph_snapshots":[{"event_id":"sha256:84eb2dbe465c6e9ac44d6f10062bc3861d5b164c706cde48ae3ea44ac6422732","target":"graph","created_at":"2026-07-05T04:50:38Z","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/2208.10678/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Niobium-zirconium (Nb-Zr) alloy is an old superconductor that is a promising new candidate for superconducting radio-frequency (SRF) cavity applications. Using density-functional and Eliashberg theories, we show that addition of Zr to a Nb surface in small concentrations increases the critical temperature $T_c$ and improves other superconducting properties. Furthermore, we calculate $T_c$ for Nb-Zr alloys across a broad range of Zr concentrations, showing good agreement with the literature for disordered alloys as well as the potential for significantly higher $T_c$ in ordered alloys near 75%N","authors_text":"Ajinkya C. Hire, Ben Francis, David A. Muller, Mark K. Transtrum, Matthias U. Liepe, Nathan S. Sitaraman, Richard Hennig, Thomas Oseroff, Tom\\'as A. Arias, Zeming Sun, Zhaslan Baraissov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-08-23T01:57:50Z","title":"Theory of Nb-Zr Alloy Superconductivity and First Experimental Demonstration for Superconducting Radio-Frequency Cavity Applications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.10678","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":"sha256:2a415c1d9a5a05bde81267b0af707878cac0f80d511ace06d39203a8741d2588","target":"record","created_at":"2026-07-05T04:50:38Z","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":"62b3978e62278edcb31f710e66dcb0fd094b0eb9e3ee7db15e8fc1025aa8e726","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-08-23T01:57:50Z","title_canon_sha256":"9e9994290198bfca0d2701de019a3d2969962243a3969c9b1cb6b9a2f25ae4be"},"schema_version":"1.0","source":{"id":"2208.10678","kind":"arxiv","version":1}},"canonical_sha256":"f4acbb10ed17e14141ec56568bebe56e31965016369aaccd3e2e4817cbb92b44","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4acbb10ed17e14141ec56568bebe56e31965016369aaccd3e2e4817cbb92b44","first_computed_at":"2026-07-05T04:50:38.468223Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:50:38.468223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SkewcZe0VJ/U2W8da8o+lS/O46u6i01P87B1E/KPv3mCUHRqh9xu4Fa2/VRFM0silyq3IVxRSg6ygZCE8Fr/Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:50:38.468627Z","signed_message":"canonical_sha256_bytes"},"source_id":"2208.10678","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a415c1d9a5a05bde81267b0af707878cac0f80d511ace06d39203a8741d2588","sha256:84eb2dbe465c6e9ac44d6f10062bc3861d5b164c706cde48ae3ea44ac6422732"],"state_sha256":"1c322fb06b16bbc0c22bd3a9581e3bce38023276acd9014732d91c64b7277d7c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kfJrRLhtztdjI4PuwW1xO+mt4Plc/NkMpFuiQ3gaD3Q/yNB71JXRkT2CCisoVvOdGRjxKsW74DzuBUv+KqNkDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T15:11:10.008520Z","bundle_sha256":"bb94f6790cfaa9b2e57faef912790cb24882c0a9d2108d126b295ed73e6e513a"}}