{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:BLNDANYXY54ZKL4HQUPRAADNNU","short_pith_number":"pith:BLNDANYX","canonical_record":{"source":{"id":"1703.08708","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-03-25T16:27:48Z","cross_cats_sorted":[],"title_canon_sha256":"9c7e531568da65eac2c94e0877ee3d8e260f7b5ecac21f315fbc69b7b11847ed","abstract_canon_sha256":"03ab061a5d4ac6be68517239777c9cc4b681b4253c6ac82f8b3cadb9c4e706df"},"schema_version":"1.0"},"canonical_sha256":"0ada303717c779952f87851f10006d6d0c3008c2a8bdd22a1e21326151e61de6","source":{"kind":"arxiv","id":"1703.08708","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08708","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08708v2","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08708","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"pith_short_12","alias_value":"BLNDANYXY54Z","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BLNDANYXY54ZKL4H","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BLNDANYX","created_at":"2026-05-18T12:31:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:BLNDANYXY54ZKL4HQUPRAADNNU","target":"record","payload":{"canonical_record":{"source":{"id":"1703.08708","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-03-25T16:27:48Z","cross_cats_sorted":[],"title_canon_sha256":"9c7e531568da65eac2c94e0877ee3d8e260f7b5ecac21f315fbc69b7b11847ed","abstract_canon_sha256":"03ab061a5d4ac6be68517239777c9cc4b681b4253c6ac82f8b3cadb9c4e706df"},"schema_version":"1.0"},"canonical_sha256":"0ada303717c779952f87851f10006d6d0c3008c2a8bdd22a1e21326151e61de6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:47:45.200509Z","signature_b64":"DWFigaAp6qJG0WjNhGxYkHmPpuk50HwwPhbJfu9icq86uO7HF2shCLzGwAKhjTTI8aLM45j5SazKAxBfEIPmBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ada303717c779952f87851f10006d6d0c3008c2a8bdd22a1e21326151e61de6","last_reissued_at":"2026-05-18T00:47:45.199813Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:47:45.199813Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.08708","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:47:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PIoUQMRd+pZP92IaJQ25veODZnAMLb0o+M43mLE94UHyh3qrh3il0N6xfe2e1GyAVcFsKcGjV1403UARFplHAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:35:03.350121Z"},"content_sha256":"07a2004394a4b06d5193ecc537e60e87a9175f6ff421f36c8e994c7bb251eec5","schema_version":"1.0","event_id":"sha256:07a2004394a4b06d5193ecc537e60e87a9175f6ff421f36c8e994c7bb251eec5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:BLNDANYXY54ZKL4HQUPRAADNNU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Critical current density in the superconducting ceramic $\\rm La_{1.8}Sr_{0.2}CuO_4$ in S-c-N point contacts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"I.K. Yanson, L.F. Rybal'chenko, N.L. Bobrov, V.V. Fisun","submitted_at":"2017-03-25T16:27:48Z","abstract_excerpt":"Measurement of the current-voltage characteristics of point contacts makes it possible to study the properties of individual crystallites in a superconducting ceramic. The critical current density in the superconducting regions of the ceramic $\\rm La_{1.8}Sr_{0.2}CuO_4$, with a size of the order of several tens of angstroms, is found to attain values of $10^8\\ A/cm^2$, which are of the same order of magnitude as the pair-breaking current density, as evaluated from the formulas of the standard theory of superconductivity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08708","kind":"arxiv","version":2},"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":"2026-05-18T00:47:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J1avyDVp3Fl47VE+GwLNLTzCcHGhG93wSBrEn4CyVIOs0NmZcYXugCfttBo74FI9Dbah2+wW27ngInhqzWHcCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:35:03.350488Z"},"content_sha256":"33079243e6687b2a1d2de9ad6d8fc03d30623582fd5b6fb1dc270dc739bf7c96","schema_version":"1.0","event_id":"sha256:33079243e6687b2a1d2de9ad6d8fc03d30623582fd5b6fb1dc270dc739bf7c96"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BLNDANYXY54ZKL4HQUPRAADNNU/bundle.json","state_url":"https://pith.science/pith/BLNDANYXY54ZKL4HQUPRAADNNU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BLNDANYXY54ZKL4HQUPRAADNNU/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":"2026-06-02T02:35:03Z","links":{"resolver":"https://pith.science/pith/BLNDANYXY54ZKL4HQUPRAADNNU","bundle":"https://pith.science/pith/BLNDANYXY54ZKL4HQUPRAADNNU/bundle.json","state":"https://pith.science/pith/BLNDANYXY54ZKL4HQUPRAADNNU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BLNDANYXY54ZKL4HQUPRAADNNU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:BLNDANYXY54ZKL4HQUPRAADNNU","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":"03ab061a5d4ac6be68517239777c9cc4b681b4253c6ac82f8b3cadb9c4e706df","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-03-25T16:27:48Z","title_canon_sha256":"9c7e531568da65eac2c94e0877ee3d8e260f7b5ecac21f315fbc69b7b11847ed"},"schema_version":"1.0","source":{"id":"1703.08708","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08708","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08708v2","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08708","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"pith_short_12","alias_value":"BLNDANYXY54Z","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BLNDANYXY54ZKL4H","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BLNDANYX","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:33079243e6687b2a1d2de9ad6d8fc03d30623582fd5b6fb1dc270dc739bf7c96","target":"graph","created_at":"2026-05-18T00:47:45Z","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":"Measurement of the current-voltage characteristics of point contacts makes it possible to study the properties of individual crystallites in a superconducting ceramic. The critical current density in the superconducting regions of the ceramic $\\rm La_{1.8}Sr_{0.2}CuO_4$, with a size of the order of several tens of angstroms, is found to attain values of $10^8\\ A/cm^2$, which are of the same order of magnitude as the pair-breaking current density, as evaluated from the formulas of the standard theory of superconductivity.","authors_text":"I.K. Yanson, L.F. Rybal'chenko, N.L. Bobrov, V.V. Fisun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-03-25T16:27:48Z","title":"Critical current density in the superconducting ceramic $\\rm La_{1.8}Sr_{0.2}CuO_4$ in S-c-N point contacts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08708","kind":"arxiv","version":2},"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":"sha256:07a2004394a4b06d5193ecc537e60e87a9175f6ff421f36c8e994c7bb251eec5","target":"record","created_at":"2026-05-18T00:47:45Z","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":"03ab061a5d4ac6be68517239777c9cc4b681b4253c6ac82f8b3cadb9c4e706df","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-03-25T16:27:48Z","title_canon_sha256":"9c7e531568da65eac2c94e0877ee3d8e260f7b5ecac21f315fbc69b7b11847ed"},"schema_version":"1.0","source":{"id":"1703.08708","kind":"arxiv","version":2}},"canonical_sha256":"0ada303717c779952f87851f10006d6d0c3008c2a8bdd22a1e21326151e61de6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ada303717c779952f87851f10006d6d0c3008c2a8bdd22a1e21326151e61de6","first_computed_at":"2026-05-18T00:47:45.199813Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:45.199813Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DWFigaAp6qJG0WjNhGxYkHmPpuk50HwwPhbJfu9icq86uO7HF2shCLzGwAKhjTTI8aLM45j5SazKAxBfEIPmBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:45.200509Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.08708","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:07a2004394a4b06d5193ecc537e60e87a9175f6ff421f36c8e994c7bb251eec5","sha256:33079243e6687b2a1d2de9ad6d8fc03d30623582fd5b6fb1dc270dc739bf7c96"],"state_sha256":"90e3c17b1551e1a9a2eb94611d37c0e708952e8b44c9d5ae9d8571c89654bdf1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DutzYla6/7NYO8Z5o5Sjb2zl+FkFHsM7tXKuM2h3JMyMv10iWB62B1cQQrau/qBthto42j1yfcsyy4gs59tTAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:35:03.352454Z","bundle_sha256":"884aeb4cd4c31534ca49e3adf44795bbf97915f1a8ce35908f28eb2d16a62914"}}