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The obtained results revealed the occurrence of (1) local superconductivity in powdered samples with Tc(0) = 8.75 \\pm 0.05 K, and (2) global superconductivity at Tc(0) = 7.3 \\pm 0.1 K in polycrystalline Bi triggered by low-resistance Ohmic contacts with silver (Ag) normal metal. The results provide eviden"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1109.3134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-09-14T16:53:27Z","cross_cats_sorted":[],"title_canon_sha256":"60dace1f42fb1c362e319b62823fc2a9ca02da6d7b3f84ce8b31443b93c671a1","abstract_canon_sha256":"ca8669a9290f8baeb8a90653fd0db557b1de16e49bfa8322be0dc82f07a63d85"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:32.952403Z","signature_b64":"/uj/zYSgT1z8a+QQPIicIwCmh0bvunG+0hLPWBp95apUQ3KTsbrmCWjnYPoJIEeUbxEMTFxc8m7lUVr+qgbJAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"739ef7170a6f49c3cd8942bb10b3489f5caa9d0260b5613d0c7a47ab5594f738","last_reissued_at":"2026-05-18T02:00:32.951858Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:32.951858Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Local and Global Superconductivity in Bismuth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Luis A. 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