{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:MH5WOLWWHWR5WMADQ3VIHRUK2I","short_pith_number":"pith:MH5WOLWW","canonical_record":{"source":{"id":"1306.3024","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-06-13T04:56:38Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"7807169a18b45ad18ffaa7507fab597f85f9957ec09d2467a1d601a731e7fcf2","abstract_canon_sha256":"25b4dbd5279340d6d18f74566c8ed3870f699d483c2b5fb1250a4d67e362a130"},"schema_version":"1.0"},"canonical_sha256":"61fb672ed63da3db300386ea83c68ad201a6fa6aeed9148cef6c79a9f44ad6f6","source":{"kind":"arxiv","id":"1306.3024","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.3024","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"1306.3024v1","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.3024","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"MH5WOLWWHWR5","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MH5WOLWWHWR5WMAD","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MH5WOLWW","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:MH5WOLWWHWR5WMADQ3VIHRUK2I","target":"record","payload":{"canonical_record":{"source":{"id":"1306.3024","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-06-13T04:56:38Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"7807169a18b45ad18ffaa7507fab597f85f9957ec09d2467a1d601a731e7fcf2","abstract_canon_sha256":"25b4dbd5279340d6d18f74566c8ed3870f699d483c2b5fb1250a4d67e362a130"},"schema_version":"1.0"},"canonical_sha256":"61fb672ed63da3db300386ea83c68ad201a6fa6aeed9148cef6c79a9f44ad6f6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:11:46.472119Z","signature_b64":"pHhbY/Vq3y66z4H00O5XpxVI55JwmAD9ISZQx5R+gXO9MegBMKhzlvg/749xRFXJJxVbkuUlcR4fxCwawY5eAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61fb672ed63da3db300386ea83c68ad201a6fa6aeed9148cef6c79a9f44ad6f6","last_reissued_at":"2026-05-18T03:11:46.471332Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:11:46.471332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1306.3024","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":"2026-05-18T03:11:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rmRIqCiZj0a3sKxJ1JMyRiOeRWS4sft9fNyIsow17PHeekGu5WL++gUZgXgdbTXeDYmzCPESNrqux4XjW/BnDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T04:19:23.459733Z"},"content_sha256":"d99aefc866424718d5564f199f3b8335196d3580b8f472aafc243a84a7ab4e08","schema_version":"1.0","event_id":"sha256:d99aefc866424718d5564f199f3b8335196d3580b8f472aafc243a84a7ab4e08"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:MH5WOLWWHWR5WMADQ3VIHRUK2I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Combinatorial search of superconductivity in Fe-B composition spreads","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"Ichiro Takeuchi, Kui Jin, Richard L. Greene, Richard Suchoski, Sean Fackler, Xiaoqing Pan, Yi Zhang","submitted_at":"2013-06-13T04:56:38Z","abstract_excerpt":"We have fabricated Fe-B thin film composition spreads in search of possible superconducting phases following a theoretical prediction by Kolmogorov et al.^1 Co-sputtering was used to deposit spreads covering a large compositional region of the Fe-B binary phase diagram. A trace of superconducting phase was found in the nanocrystalline part of the spread, where the film undergoes a metal to insulator transition as a function of composition in a region with the average composition of FeB_2. The resistance drop occurs at 4K, and a diamagnetic signal has also been detected at the same temperature."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.3024","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":"2026-05-18T03:11:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pq3zZq4sHWrlmP7vwhK8HzWiVhMkkZ4TYVjGAoTRhL/Hk4KFxTE4JvLT5/o95I1Kwm13CMcgPiZ7TOld9OcaBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T04:19:23.460407Z"},"content_sha256":"ab877c437a76951d412b3a947cee554b27617beb84b708cc78aeadbc3c8fca1f","schema_version":"1.0","event_id":"sha256:ab877c437a76951d412b3a947cee554b27617beb84b708cc78aeadbc3c8fca1f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MH5WOLWWHWR5WMADQ3VIHRUK2I/bundle.json","state_url":"https://pith.science/pith/MH5WOLWWHWR5WMADQ3VIHRUK2I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MH5WOLWWHWR5WMADQ3VIHRUK2I/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":"2026-05-19T04:19:23Z","links":{"resolver":"https://pith.science/pith/MH5WOLWWHWR5WMADQ3VIHRUK2I","bundle":"https://pith.science/pith/MH5WOLWWHWR5WMADQ3VIHRUK2I/bundle.json","state":"https://pith.science/pith/MH5WOLWWHWR5WMADQ3VIHRUK2I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MH5WOLWWHWR5WMADQ3VIHRUK2I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MH5WOLWWHWR5WMADQ3VIHRUK2I","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":"25b4dbd5279340d6d18f74566c8ed3870f699d483c2b5fb1250a4d67e362a130","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-06-13T04:56:38Z","title_canon_sha256":"7807169a18b45ad18ffaa7507fab597f85f9957ec09d2467a1d601a731e7fcf2"},"schema_version":"1.0","source":{"id":"1306.3024","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.3024","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"1306.3024v1","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.3024","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"MH5WOLWWHWR5","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MH5WOLWWHWR5WMAD","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MH5WOLWW","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:ab877c437a76951d412b3a947cee554b27617beb84b708cc78aeadbc3c8fca1f","target":"graph","created_at":"2026-05-18T03:11:46Z","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 have fabricated Fe-B thin film composition spreads in search of possible superconducting phases following a theoretical prediction by Kolmogorov et al.^1 Co-sputtering was used to deposit spreads covering a large compositional region of the Fe-B binary phase diagram. A trace of superconducting phase was found in the nanocrystalline part of the spread, where the film undergoes a metal to insulator transition as a function of composition in a region with the average composition of FeB_2. The resistance drop occurs at 4K, and a diamagnetic signal has also been detected at the same temperature.","authors_text":"Ichiro Takeuchi, Kui Jin, Richard L. Greene, Richard Suchoski, Sean Fackler, Xiaoqing Pan, Yi Zhang","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-06-13T04:56:38Z","title":"Combinatorial search of superconductivity in Fe-B composition spreads"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.3024","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:d99aefc866424718d5564f199f3b8335196d3580b8f472aafc243a84a7ab4e08","target":"record","created_at":"2026-05-18T03:11:46Z","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":"25b4dbd5279340d6d18f74566c8ed3870f699d483c2b5fb1250a4d67e362a130","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-06-13T04:56:38Z","title_canon_sha256":"7807169a18b45ad18ffaa7507fab597f85f9957ec09d2467a1d601a731e7fcf2"},"schema_version":"1.0","source":{"id":"1306.3024","kind":"arxiv","version":1}},"canonical_sha256":"61fb672ed63da3db300386ea83c68ad201a6fa6aeed9148cef6c79a9f44ad6f6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61fb672ed63da3db300386ea83c68ad201a6fa6aeed9148cef6c79a9f44ad6f6","first_computed_at":"2026-05-18T03:11:46.471332Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:46.471332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pHhbY/Vq3y66z4H00O5XpxVI55JwmAD9ISZQx5R+gXO9MegBMKhzlvg/749xRFXJJxVbkuUlcR4fxCwawY5eAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:46.472119Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.3024","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d99aefc866424718d5564f199f3b8335196d3580b8f472aafc243a84a7ab4e08","sha256:ab877c437a76951d412b3a947cee554b27617beb84b708cc78aeadbc3c8fca1f"],"state_sha256":"3f5ee40c5500ad7564ab70b93b41ee26c47b6b3ff8c5da649a7168cc2b5bc250"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nob+nCzH5ysSNzrxmTSpT4r4UlJlOgQpj5y+CwHCJYCh0I0VF1bfYfxuT1eEKJ4BbUcRQp+2EBuMCWwfjYZZDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T04:19:23.462450Z","bundle_sha256":"8742d44245ca0ba4aadcd75f649f3e94aa1d2753f88b536365eab82c60c7c46c"}}