{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:7CPZYYPOOBTCVMFQABEWHVVF4D","short_pith_number":"pith:7CPZYYPO","canonical_record":{"source":{"id":"1312.4459","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-12-12T18:09:00Z","cross_cats_sorted":[],"title_canon_sha256":"5b7d108ecf631c635c10049ec9902bd878ede9b2c6de4e35fe23cb8551203584","abstract_canon_sha256":"3ece3aba9d5e1bc9fc8471046a85ca2cfa5b58c5b0df6f9ad4509a10d925bea6"},"schema_version":"1.0"},"canonical_sha256":"f89f9c61ee70662ab0b0004963d6a5e0ee2d011485e80c8589e80f5709fddd82","source":{"kind":"arxiv","id":"1312.4459","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.4459","created_at":"2026-05-18T03:04:24Z"},{"alias_kind":"arxiv_version","alias_value":"1312.4459v1","created_at":"2026-05-18T03:04:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.4459","created_at":"2026-05-18T03:04:24Z"},{"alias_kind":"pith_short_12","alias_value":"7CPZYYPOOBTC","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"7CPZYYPOOBTCVMFQ","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"7CPZYYPO","created_at":"2026-05-18T12:27:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:7CPZYYPOOBTCVMFQABEWHVVF4D","target":"record","payload":{"canonical_record":{"source":{"id":"1312.4459","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-12-12T18:09:00Z","cross_cats_sorted":[],"title_canon_sha256":"5b7d108ecf631c635c10049ec9902bd878ede9b2c6de4e35fe23cb8551203584","abstract_canon_sha256":"3ece3aba9d5e1bc9fc8471046a85ca2cfa5b58c5b0df6f9ad4509a10d925bea6"},"schema_version":"1.0"},"canonical_sha256":"f89f9c61ee70662ab0b0004963d6a5e0ee2d011485e80c8589e80f5709fddd82","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:04:24.720641Z","signature_b64":"3Xb6tjIsOW089ERsP3RU2jdsCdQmLfev00SNcsGxhPV83MK00X6Ryyog1mUKrzGf4+OZx3XKQsavoqqbS70SAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f89f9c61ee70662ab0b0004963d6a5e0ee2d011485e80c8589e80f5709fddd82","last_reissued_at":"2026-05-18T03:04:24.719949Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:04:24.719949Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.4459","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":"2026-05-18T03:04:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iibcU4L3QjbZYFeoSKzSxe6SSsg+es7Df36wyYwfw3o3OTzxTTVp0E7T19F6ldjCjNudOQF/kE8/umefLjixDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T11:45:43.673826Z"},"content_sha256":"8bbed4f9f88e8dc28713ccd00b9d681f372a7c662141e66ff4f9bcd698999e05","schema_version":"1.0","event_id":"sha256:8bbed4f9f88e8dc28713ccd00b9d681f372a7c662141e66ff4f9bcd698999e05"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:7CPZYYPOOBTCVMFQABEWHVVF4D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Invited review: Graphite and its hidden superconductivity","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Pablo Esquinazi","submitted_at":"2013-12-12T18:09:00Z","abstract_excerpt":"We review experimental results, from transport to magnetization measurements, on different graphite samples, from bulk oriented graphite, thin graphite films to transmission electron microscope lamellae, that indicate the existence of granular superconductivity at temperatures above 100 K. The accumulated evidence speaks for a localization of the superconducting phase(s) at certain interfaces embedded in semiconducting crystalline regions with Bernal stacking order."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.4459","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":"2026-05-18T03:04:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ibL07+j0sIpdwEDBg/KwlPeL01k1wISG6xUi2+YtHFA3V+RmA/dUAXhgrBoihbfGf6Y+N9Ks68JN6yCMf8joBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T11:45:43.674159Z"},"content_sha256":"db76f68029f4f53a14bb1f4cb3a2576bc65159b606659947f29d5ac50899efd8","schema_version":"1.0","event_id":"sha256:db76f68029f4f53a14bb1f4cb3a2576bc65159b606659947f29d5ac50899efd8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7CPZYYPOOBTCVMFQABEWHVVF4D/bundle.json","state_url":"https://pith.science/pith/7CPZYYPOOBTCVMFQABEWHVVF4D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7CPZYYPOOBTCVMFQABEWHVVF4D/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":"2026-06-29T11:45:43Z","links":{"resolver":"https://pith.science/pith/7CPZYYPOOBTCVMFQABEWHVVF4D","bundle":"https://pith.science/pith/7CPZYYPOOBTCVMFQABEWHVVF4D/bundle.json","state":"https://pith.science/pith/7CPZYYPOOBTCVMFQABEWHVVF4D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7CPZYYPOOBTCVMFQABEWHVVF4D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:7CPZYYPOOBTCVMFQABEWHVVF4D","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":"3ece3aba9d5e1bc9fc8471046a85ca2cfa5b58c5b0df6f9ad4509a10d925bea6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-12-12T18:09:00Z","title_canon_sha256":"5b7d108ecf631c635c10049ec9902bd878ede9b2c6de4e35fe23cb8551203584"},"schema_version":"1.0","source":{"id":"1312.4459","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.4459","created_at":"2026-05-18T03:04:24Z"},{"alias_kind":"arxiv_version","alias_value":"1312.4459v1","created_at":"2026-05-18T03:04:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.4459","created_at":"2026-05-18T03:04:24Z"},{"alias_kind":"pith_short_12","alias_value":"7CPZYYPOOBTC","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"7CPZYYPOOBTCVMFQ","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"7CPZYYPO","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:db76f68029f4f53a14bb1f4cb3a2576bc65159b606659947f29d5ac50899efd8","target":"graph","created_at":"2026-05-18T03:04:24Z","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 review experimental results, from transport to magnetization measurements, on different graphite samples, from bulk oriented graphite, thin graphite films to transmission electron microscope lamellae, that indicate the existence of granular superconductivity at temperatures above 100 K. The accumulated evidence speaks for a localization of the superconducting phase(s) at certain interfaces embedded in semiconducting crystalline regions with Bernal stacking order.","authors_text":"Pablo Esquinazi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-12-12T18:09:00Z","title":"Invited review: Graphite and its hidden superconductivity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.4459","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":"sha256:8bbed4f9f88e8dc28713ccd00b9d681f372a7c662141e66ff4f9bcd698999e05","target":"record","created_at":"2026-05-18T03:04:24Z","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":"3ece3aba9d5e1bc9fc8471046a85ca2cfa5b58c5b0df6f9ad4509a10d925bea6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-12-12T18:09:00Z","title_canon_sha256":"5b7d108ecf631c635c10049ec9902bd878ede9b2c6de4e35fe23cb8551203584"},"schema_version":"1.0","source":{"id":"1312.4459","kind":"arxiv","version":1}},"canonical_sha256":"f89f9c61ee70662ab0b0004963d6a5e0ee2d011485e80c8589e80f5709fddd82","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f89f9c61ee70662ab0b0004963d6a5e0ee2d011485e80c8589e80f5709fddd82","first_computed_at":"2026-05-18T03:04:24.719949Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:04:24.719949Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3Xb6tjIsOW089ERsP3RU2jdsCdQmLfev00SNcsGxhPV83MK00X6Ryyog1mUKrzGf4+OZx3XKQsavoqqbS70SAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:04:24.720641Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.4459","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8bbed4f9f88e8dc28713ccd00b9d681f372a7c662141e66ff4f9bcd698999e05","sha256:db76f68029f4f53a14bb1f4cb3a2576bc65159b606659947f29d5ac50899efd8"],"state_sha256":"2e1c1b8ef44e0dc0d903f9b236546758b5c28e1209efe0323262be5604ede43b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ehF3pijiSZxkQgMOAbjC3T9RUM7weQQoSefZG49dj4MuJEnJIAdm5J/PFLXm1sNGER1GN5IjD3SdRektSJECCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T11:45:43.676010Z","bundle_sha256":"03a46e00f113056ee6a597415c52ba89e22c9e791a1938b5057ffd82037fa264"}}