{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:WD7PSN22FZOEOQLQUHTXSRUNGM","short_pith_number":"pith:WD7PSN22","canonical_record":{"source":{"id":"1808.03360","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-08-09T22:04:30Z","cross_cats_sorted":[],"title_canon_sha256":"7925de4428578f2086f11fd681053ea58d2d00b0a4351d0c0d838b6e3e7424d3","abstract_canon_sha256":"ce935e3eed7ab10dde7f0d8b1bcfe315734f000f7047618780e8f18e24309348"},"schema_version":"1.0"},"canonical_sha256":"b0fef9375a2e5c474170a1e779468d33397e5fb52b5f674b6ffaf6ad1487b0f2","source":{"kind":"arxiv","id":"1808.03360","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03360","created_at":"2026-05-18T00:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03360v1","created_at":"2026-05-18T00:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03360","created_at":"2026-05-18T00:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"WD7PSN22FZOE","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"WD7PSN22FZOEOQLQ","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"WD7PSN22","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:WD7PSN22FZOEOQLQUHTXSRUNGM","target":"record","payload":{"canonical_record":{"source":{"id":"1808.03360","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-08-09T22:04:30Z","cross_cats_sorted":[],"title_canon_sha256":"7925de4428578f2086f11fd681053ea58d2d00b0a4351d0c0d838b6e3e7424d3","abstract_canon_sha256":"ce935e3eed7ab10dde7f0d8b1bcfe315734f000f7047618780e8f18e24309348"},"schema_version":"1.0"},"canonical_sha256":"b0fef9375a2e5c474170a1e779468d33397e5fb52b5f674b6ffaf6ad1487b0f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:27.514143Z","signature_b64":"LrpBXJQfd043FiWr0VyVdr2oF5qVpc51Tu/BbuJnSajJ3od+LqguhDYzL/SXa1fUh02rQfBsAh1+mk0OdUUFBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b0fef9375a2e5c474170a1e779468d33397e5fb52b5f674b6ffaf6ad1487b0f2","last_reissued_at":"2026-05-18T00:08:27.513586Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:27.513586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.03360","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":"2026-05-18T00:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u6LftzpTHgzWQU9hLfDjo3fd0lM5M6cD60BEkYKNTH8xUW5hM2sWe5dLcIl2kdJBfw1LXb0nXpXotwx0bjTPBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:57:08.134353Z"},"content_sha256":"6a81feb2d76f3a5520d1ac055b8fbe5f34e0f946456ff9217cece8dfd99521c9","schema_version":"1.0","event_id":"sha256:6a81feb2d76f3a5520d1ac055b8fbe5f34e0f946456ff9217cece8dfd99521c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:WD7PSN22FZOEOQLQUHTXSRUNGM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superconductivity in oxygen-added Zr5Pt3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Jiro Kitagawa, Shusuke Hamamoto","submitted_at":"2018-08-09T22:04:30Z","abstract_excerpt":"Mn5Si3-type structure has been offering an interstitial chemistry. Recent report of enhancement of superconductivity in a Nb-based Mn5Si3-type compound by addition of an interstitial atom motivated us to investigate the effect of oxygen-addition in Mn5Si3-type Zr5Pt3. The superconducting critical temperature of 6.4 K in the parent Zr5Pt3 is monotonously reduced to 3.2 K in Zr5Pt3Ox (x=0.6) with increasing oxygen-content. As x is further increased from 0.6 to 2.5, exceeding the full occupancy of oxygen site (x=1.0), samples become multi-phases composed of Zr5Pt3O0.5-0.6, ZrPt and ZrO2. However,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03360","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":"2026-05-18T00:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZK13cXCYoqx6OL0XQ60Y5eWVBDT867Oqh/UtvkkCL8VPDRBUCsgq7fQPxWTMxWtdW0yOjul8pRMbigpl0tkaDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:57:08.134707Z"},"content_sha256":"ca43b8c1e246933e456cdf1286e5ea8408e09028b0eed4875cdb5a5cf42a42c1","schema_version":"1.0","event_id":"sha256:ca43b8c1e246933e456cdf1286e5ea8408e09028b0eed4875cdb5a5cf42a42c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WD7PSN22FZOEOQLQUHTXSRUNGM/bundle.json","state_url":"https://pith.science/pith/WD7PSN22FZOEOQLQUHTXSRUNGM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WD7PSN22FZOEOQLQUHTXSRUNGM/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":"2026-06-03T18:57:08Z","links":{"resolver":"https://pith.science/pith/WD7PSN22FZOEOQLQUHTXSRUNGM","bundle":"https://pith.science/pith/WD7PSN22FZOEOQLQUHTXSRUNGM/bundle.json","state":"https://pith.science/pith/WD7PSN22FZOEOQLQUHTXSRUNGM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WD7PSN22FZOEOQLQUHTXSRUNGM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:WD7PSN22FZOEOQLQUHTXSRUNGM","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":"ce935e3eed7ab10dde7f0d8b1bcfe315734f000f7047618780e8f18e24309348","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-08-09T22:04:30Z","title_canon_sha256":"7925de4428578f2086f11fd681053ea58d2d00b0a4351d0c0d838b6e3e7424d3"},"schema_version":"1.0","source":{"id":"1808.03360","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03360","created_at":"2026-05-18T00:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03360v1","created_at":"2026-05-18T00:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03360","created_at":"2026-05-18T00:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"WD7PSN22FZOE","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"WD7PSN22FZOEOQLQ","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"WD7PSN22","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:ca43b8c1e246933e456cdf1286e5ea8408e09028b0eed4875cdb5a5cf42a42c1","target":"graph","created_at":"2026-05-18T00:08:27Z","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":"Mn5Si3-type structure has been offering an interstitial chemistry. Recent report of enhancement of superconductivity in a Nb-based Mn5Si3-type compound by addition of an interstitial atom motivated us to investigate the effect of oxygen-addition in Mn5Si3-type Zr5Pt3. The superconducting critical temperature of 6.4 K in the parent Zr5Pt3 is monotonously reduced to 3.2 K in Zr5Pt3Ox (x=0.6) with increasing oxygen-content. As x is further increased from 0.6 to 2.5, exceeding the full occupancy of oxygen site (x=1.0), samples become multi-phases composed of Zr5Pt3O0.5-0.6, ZrPt and ZrO2. However,","authors_text":"Jiro Kitagawa, Shusuke Hamamoto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-08-09T22:04:30Z","title":"Superconductivity in oxygen-added Zr5Pt3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03360","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":"sha256:6a81feb2d76f3a5520d1ac055b8fbe5f34e0f946456ff9217cece8dfd99521c9","target":"record","created_at":"2026-05-18T00:08:27Z","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":"ce935e3eed7ab10dde7f0d8b1bcfe315734f000f7047618780e8f18e24309348","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-08-09T22:04:30Z","title_canon_sha256":"7925de4428578f2086f11fd681053ea58d2d00b0a4351d0c0d838b6e3e7424d3"},"schema_version":"1.0","source":{"id":"1808.03360","kind":"arxiv","version":1}},"canonical_sha256":"b0fef9375a2e5c474170a1e779468d33397e5fb52b5f674b6ffaf6ad1487b0f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b0fef9375a2e5c474170a1e779468d33397e5fb52b5f674b6ffaf6ad1487b0f2","first_computed_at":"2026-05-18T00:08:27.513586Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:27.513586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LrpBXJQfd043FiWr0VyVdr2oF5qVpc51Tu/BbuJnSajJ3od+LqguhDYzL/SXa1fUh02rQfBsAh1+mk0OdUUFBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:27.514143Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.03360","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6a81feb2d76f3a5520d1ac055b8fbe5f34e0f946456ff9217cece8dfd99521c9","sha256:ca43b8c1e246933e456cdf1286e5ea8408e09028b0eed4875cdb5a5cf42a42c1"],"state_sha256":"a774078a5362113f7589072d6a373858445599d00b78a68674e7ca7bf0a6f362"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"myb8zmPbs/HxbArsxXqosJ9D7Hf2Zjq1RPfspgjhsuF9YZex+fZvFDwI6C1u2gMVtps2M0ocRBQYCzUkirzpAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T18:57:08.136930Z","bundle_sha256":"3f086ddf6ef8ef6817b633dfbb34fedb3b6a0cdf2e76146a547f2c236dcf9d5a"}}