{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:T3L6BJVXZ7T5HI5OGO2YE6BGPW","short_pith_number":"pith:T3L6BJVX","canonical_record":{"source":{"id":"1504.03318","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-13T20:00:28Z","cross_cats_sorted":[],"title_canon_sha256":"85b1f0751193190061711fe65536c0806d18c34f7a4a05a1ebbea02f6f420089","abstract_canon_sha256":"ee9f501a164972e3ece8ae93d932c00903841c6677b81024d05605a29a35f1d5"},"schema_version":"1.0"},"canonical_sha256":"9ed7e0a6b7cfe7d3a3ae33b58278267d8c642a9b33afc82f483581c10d73f83b","source":{"kind":"arxiv","id":"1504.03318","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.03318","created_at":"2026-05-18T02:03:50Z"},{"alias_kind":"arxiv_version","alias_value":"1504.03318v1","created_at":"2026-05-18T02:03:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.03318","created_at":"2026-05-18T02:03:50Z"},{"alias_kind":"pith_short_12","alias_value":"T3L6BJVXZ7T5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"T3L6BJVXZ7T5HI5O","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"T3L6BJVX","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:T3L6BJVXZ7T5HI5OGO2YE6BGPW","target":"record","payload":{"canonical_record":{"source":{"id":"1504.03318","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-13T20:00:28Z","cross_cats_sorted":[],"title_canon_sha256":"85b1f0751193190061711fe65536c0806d18c34f7a4a05a1ebbea02f6f420089","abstract_canon_sha256":"ee9f501a164972e3ece8ae93d932c00903841c6677b81024d05605a29a35f1d5"},"schema_version":"1.0"},"canonical_sha256":"9ed7e0a6b7cfe7d3a3ae33b58278267d8c642a9b33afc82f483581c10d73f83b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:50.249252Z","signature_b64":"MRYqcDEr9H37ymN0ETK6DQCvJ+Hc11n5buJvDuqT5J1z8gBYSgm7hehd+qTzjMNsP+jP7YBsFQBLQIdyEs3bDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9ed7e0a6b7cfe7d3a3ae33b58278267d8c642a9b33afc82f483581c10d73f83b","last_reissued_at":"2026-05-18T02:03:50.248434Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:50.248434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.03318","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":"2026-05-18T02:03:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3I6l7BrHCofT7jtNW4tBMhSlcN2LobHSsaWkokzs57vI+ASaiyx2LZbNkPwVT/gM2m6f8LVwew4DR2pAfv5BAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:32:07.323874Z"},"content_sha256":"86af63fc05f14bbf67e4e6b5c43b7f81271d9f787393b91fd92010a009c6d60e","schema_version":"1.0","event_id":"sha256:86af63fc05f14bbf67e4e6b5c43b7f81271d9f787393b91fd92010a009c6d60e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:T3L6BJVXZ7T5HI5OGO2YE6BGPW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superconducting materials classes: introduction and overview","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"F. Marsiglio, J.E. Hirsch, M.B. Maple","submitted_at":"2015-04-13T20:00:28Z","abstract_excerpt":"An introduction to and overview of the contents of this Special Issue are given. 32 classes of superconducting materials are discussed, grouped under the three categories \"conventional\", \"possibly unconventional\" and \"unconventional\" according to the mechanism believed to give rise to superconductivity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.03318","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":"2026-05-18T02:03:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AAMN2pAROeJzz4uEqrzVsNAo3HUYTzCpccHvw9WtOxWMUXGmoHltzP4KAiH+XnnZ4R1y0BrQDGJOC29daTJ9Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T14:32:07.324328Z"},"content_sha256":"cad597bc8b7274c5c22431015ba658cb550d1f636dacc5a7f2a5b9164819fc02","schema_version":"1.0","event_id":"sha256:cad597bc8b7274c5c22431015ba658cb550d1f636dacc5a7f2a5b9164819fc02"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T3L6BJVXZ7T5HI5OGO2YE6BGPW/bundle.json","state_url":"https://pith.science/pith/T3L6BJVXZ7T5HI5OGO2YE6BGPW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T3L6BJVXZ7T5HI5OGO2YE6BGPW/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":"2026-05-29T14:32:07Z","links":{"resolver":"https://pith.science/pith/T3L6BJVXZ7T5HI5OGO2YE6BGPW","bundle":"https://pith.science/pith/T3L6BJVXZ7T5HI5OGO2YE6BGPW/bundle.json","state":"https://pith.science/pith/T3L6BJVXZ7T5HI5OGO2YE6BGPW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T3L6BJVXZ7T5HI5OGO2YE6BGPW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:T3L6BJVXZ7T5HI5OGO2YE6BGPW","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":"ee9f501a164972e3ece8ae93d932c00903841c6677b81024d05605a29a35f1d5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-13T20:00:28Z","title_canon_sha256":"85b1f0751193190061711fe65536c0806d18c34f7a4a05a1ebbea02f6f420089"},"schema_version":"1.0","source":{"id":"1504.03318","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.03318","created_at":"2026-05-18T02:03:50Z"},{"alias_kind":"arxiv_version","alias_value":"1504.03318v1","created_at":"2026-05-18T02:03:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.03318","created_at":"2026-05-18T02:03:50Z"},{"alias_kind":"pith_short_12","alias_value":"T3L6BJVXZ7T5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"T3L6BJVXZ7T5HI5O","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"T3L6BJVX","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:cad597bc8b7274c5c22431015ba658cb550d1f636dacc5a7f2a5b9164819fc02","target":"graph","created_at":"2026-05-18T02:03:50Z","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":"An introduction to and overview of the contents of this Special Issue are given. 32 classes of superconducting materials are discussed, grouped under the three categories \"conventional\", \"possibly unconventional\" and \"unconventional\" according to the mechanism believed to give rise to superconductivity.","authors_text":"F. Marsiglio, J.E. Hirsch, M.B. Maple","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-13T20:00:28Z","title":"Superconducting materials classes: introduction and overview"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.03318","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":"sha256:86af63fc05f14bbf67e4e6b5c43b7f81271d9f787393b91fd92010a009c6d60e","target":"record","created_at":"2026-05-18T02:03:50Z","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":"ee9f501a164972e3ece8ae93d932c00903841c6677b81024d05605a29a35f1d5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-04-13T20:00:28Z","title_canon_sha256":"85b1f0751193190061711fe65536c0806d18c34f7a4a05a1ebbea02f6f420089"},"schema_version":"1.0","source":{"id":"1504.03318","kind":"arxiv","version":1}},"canonical_sha256":"9ed7e0a6b7cfe7d3a3ae33b58278267d8c642a9b33afc82f483581c10d73f83b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ed7e0a6b7cfe7d3a3ae33b58278267d8c642a9b33afc82f483581c10d73f83b","first_computed_at":"2026-05-18T02:03:50.248434Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:50.248434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MRYqcDEr9H37ymN0ETK6DQCvJ+Hc11n5buJvDuqT5J1z8gBYSgm7hehd+qTzjMNsP+jP7YBsFQBLQIdyEs3bDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:50.249252Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.03318","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86af63fc05f14bbf67e4e6b5c43b7f81271d9f787393b91fd92010a009c6d60e","sha256:cad597bc8b7274c5c22431015ba658cb550d1f636dacc5a7f2a5b9164819fc02"],"state_sha256":"9e969bd88683054dd15bd75ac4f77fd0a0af3c6f8b8ad529bf6286d981e579f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o562vu/z68k0lzF6P6mosppvWsfFc4IrYapiIaNnHF9/dH36WUt5Z7zYWX2O1NWbDOv9CgNpDhufw4sTbJl9CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T14:32:07.327580Z","bundle_sha256":"85ebbb1e000ddeb31e3125fccc4c001b1db47053152ccb482380f51fe446b697"}}