{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:7VEOAAWQ7LBCHT7EUNRKKLVGTT","short_pith_number":"pith:7VEOAAWQ","canonical_record":{"source":{"id":"2210.15600","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2022-10-26T01:03:28Z","cross_cats_sorted":["cond-mat.supr-con","cs.LG"],"title_canon_sha256":"61f7a9ad0d7d5a3d1e78e36262b5eb3ceb3e59cf4ef9147fedfc0e7743cbaabf","abstract_canon_sha256":"dfe97e3c52275a03a14cf1dd1c33d34f45a83c4c42f5b1a67627edc457bacec6"},"schema_version":"1.0"},"canonical_sha256":"fd48e002d0fac223cfe4a362a52ea69cd8536a34b5bed9cce0b0fc110fefc29e","source":{"kind":"arxiv","id":"2210.15600","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.15600","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"arxiv_version","alias_value":"2210.15600v2","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.15600","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"pith_short_12","alias_value":"7VEOAAWQ7LBC","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"pith_short_16","alias_value":"7VEOAAWQ7LBCHT7E","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"pith_short_8","alias_value":"7VEOAAWQ","created_at":"2026-07-05T07:15:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:7VEOAAWQ7LBCHT7EUNRKKLVGTT","target":"record","payload":{"canonical_record":{"source":{"id":"2210.15600","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2022-10-26T01:03:28Z","cross_cats_sorted":["cond-mat.supr-con","cs.LG"],"title_canon_sha256":"61f7a9ad0d7d5a3d1e78e36262b5eb3ceb3e59cf4ef9147fedfc0e7743cbaabf","abstract_canon_sha256":"dfe97e3c52275a03a14cf1dd1c33d34f45a83c4c42f5b1a67627edc457bacec6"},"schema_version":"1.0"},"canonical_sha256":"fd48e002d0fac223cfe4a362a52ea69cd8536a34b5bed9cce0b0fc110fefc29e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:15:49.230706Z","signature_b64":"/jN+AsJNpruwMOjI75AZ4OVcO0+5S4wuZNPJJHYgUYbGZXHSmlUSgtMCXL5I/bmF1onxZy+aR/XHl3RwkcTFCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd48e002d0fac223cfe4a362a52ea69cd8536a34b5bed9cce0b0fc110fefc29e","last_reissued_at":"2026-07-05T07:15:49.230262Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:15:49.230262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2210.15600","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":"2026-07-05T07:15:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d4jEw9go/0uyoJvQTLRMFGV72SfbBuc9LfYwnYUI/KK3AvI/xyrOIBOWscIlQAh9A9nRBl+66Ung0Ygby+MJDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:21:58.652963Z"},"content_sha256":"34d0817862ebfff6c5fd7e7e3d8d65f4bc9c86f71b1d1c973d67472c21bf44bb","schema_version":"1.0","event_id":"sha256:34d0817862ebfff6c5fd7e7e3d8d65f4bc9c86f71b1d1c973d67472c21bf44bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:7VEOAAWQ7LBCHT7EUNRKKLVGTT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automatic extraction of materials and properties from superconductors scientific literature","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.supr-con","cs.LG"],"primary_cat":"cs.CL","authors_text":"Kensei Terashima, Luca Foppiano, Masashi Ishii, Pedro Baptista de Castro, Pedro Ortiz Suarez, Yoshihiko Takano","submitted_at":"2022-10-26T01:03:28Z","abstract_excerpt":"The automatic extraction of materials and related properties from the scientific literature is gaining attention in data-driven materials science (Materials Informatics). In this paper, we discuss Grobid-superconductors, our solution for automatically extracting superconductor material names and respective properties from text. Built as a Grobid module, it combines machine learning and heuristic approaches in a multi-step architecture that supports input data as raw text or PDF documents. Using Grobid-superconductors, we built SuperCon2, a database of 40324 materials and properties records fro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.15600","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2210.15600/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T07:15:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"09tT8TtQ1uJtkUjIV8N6C7SXdFZktLiBU54trF56kcRVfX+Qlzeu1UTG4Mro7Lov/nblffbkElLq3u84VGCdCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:21:58.653976Z"},"content_sha256":"ca4d8cf0ea0988d30ed6ef4b103e7338ed071461335c5029a17db0dbc6ea176c","schema_version":"1.0","event_id":"sha256:ca4d8cf0ea0988d30ed6ef4b103e7338ed071461335c5029a17db0dbc6ea176c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7VEOAAWQ7LBCHT7EUNRKKLVGTT/bundle.json","state_url":"https://pith.science/pith/7VEOAAWQ7LBCHT7EUNRKKLVGTT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7VEOAAWQ7LBCHT7EUNRKKLVGTT/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":"2026-08-03T19:21:58Z","links":{"resolver":"https://pith.science/pith/7VEOAAWQ7LBCHT7EUNRKKLVGTT","bundle":"https://pith.science/pith/7VEOAAWQ7LBCHT7EUNRKKLVGTT/bundle.json","state":"https://pith.science/pith/7VEOAAWQ7LBCHT7EUNRKKLVGTT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7VEOAAWQ7LBCHT7EUNRKKLVGTT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:7VEOAAWQ7LBCHT7EUNRKKLVGTT","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":"dfe97e3c52275a03a14cf1dd1c33d34f45a83c4c42f5b1a67627edc457bacec6","cross_cats_sorted":["cond-mat.supr-con","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2022-10-26T01:03:28Z","title_canon_sha256":"61f7a9ad0d7d5a3d1e78e36262b5eb3ceb3e59cf4ef9147fedfc0e7743cbaabf"},"schema_version":"1.0","source":{"id":"2210.15600","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.15600","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"arxiv_version","alias_value":"2210.15600v2","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.15600","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"pith_short_12","alias_value":"7VEOAAWQ7LBC","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"pith_short_16","alias_value":"7VEOAAWQ7LBCHT7E","created_at":"2026-07-05T07:15:49Z"},{"alias_kind":"pith_short_8","alias_value":"7VEOAAWQ","created_at":"2026-07-05T07:15:49Z"}],"graph_snapshots":[{"event_id":"sha256:ca4d8cf0ea0988d30ed6ef4b103e7338ed071461335c5029a17db0dbc6ea176c","target":"graph","created_at":"2026-07-05T07:15:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2210.15600/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The automatic extraction of materials and related properties from the scientific literature is gaining attention in data-driven materials science (Materials Informatics). In this paper, we discuss Grobid-superconductors, our solution for automatically extracting superconductor material names and respective properties from text. Built as a Grobid module, it combines machine learning and heuristic approaches in a multi-step architecture that supports input data as raw text or PDF documents. Using Grobid-superconductors, we built SuperCon2, a database of 40324 materials and properties records fro","authors_text":"Kensei Terashima, Luca Foppiano, Masashi Ishii, Pedro Baptista de Castro, Pedro Ortiz Suarez, Yoshihiko Takano","cross_cats":["cond-mat.supr-con","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2022-10-26T01:03:28Z","title":"Automatic extraction of materials and properties from superconductors scientific literature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.15600","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":"sha256:34d0817862ebfff6c5fd7e7e3d8d65f4bc9c86f71b1d1c973d67472c21bf44bb","target":"record","created_at":"2026-07-05T07:15:49Z","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":"dfe97e3c52275a03a14cf1dd1c33d34f45a83c4c42f5b1a67627edc457bacec6","cross_cats_sorted":["cond-mat.supr-con","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2022-10-26T01:03:28Z","title_canon_sha256":"61f7a9ad0d7d5a3d1e78e36262b5eb3ceb3e59cf4ef9147fedfc0e7743cbaabf"},"schema_version":"1.0","source":{"id":"2210.15600","kind":"arxiv","version":2}},"canonical_sha256":"fd48e002d0fac223cfe4a362a52ea69cd8536a34b5bed9cce0b0fc110fefc29e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd48e002d0fac223cfe4a362a52ea69cd8536a34b5bed9cce0b0fc110fefc29e","first_computed_at":"2026-07-05T07:15:49.230262Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:15:49.230262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/jN+AsJNpruwMOjI75AZ4OVcO0+5S4wuZNPJJHYgUYbGZXHSmlUSgtMCXL5I/bmF1onxZy+aR/XHl3RwkcTFCg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:15:49.230706Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.15600","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34d0817862ebfff6c5fd7e7e3d8d65f4bc9c86f71b1d1c973d67472c21bf44bb","sha256:ca4d8cf0ea0988d30ed6ef4b103e7338ed071461335c5029a17db0dbc6ea176c"],"state_sha256":"83a056d9fe7981691eb1610ed87f47b5a6609dbcb1c58903106930092f9129c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zjXLq5uSF/bk3A5LyWqfYkAMfR9fMMw01DmYcMFGtjDtgQcWj8uO6cGIkknekvr8WtixaHTpprRtKqz151MRBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:21:58.708884Z","bundle_sha256":"f272923cb9f25dd5befc8d5b69ad285a1af4455bc67c8b28e68cea6b09a58dff"}}