{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:3SJ6Z5WS5C7D6ZBBXUHFWTNHGK","short_pith_number":"pith:3SJ6Z5WS","canonical_record":{"source":{"id":"2206.00569","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-06-01T15:29:57Z","cross_cats_sorted":[],"title_canon_sha256":"25b3757807200187282afac4eb6f4ffcec7ab6e481991751b6c03707a84450e0","abstract_canon_sha256":"74c73bbbe64e57ac4cffbbf720a504c53097742a6883c647591a0c6bac42fdc6"},"schema_version":"1.0"},"canonical_sha256":"dc93ecf6d2e8be3f6421bd0e5b4da732a4b058525f1554915d5e033aada26434","source":{"kind":"arxiv","id":"2206.00569","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.00569","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"arxiv_version","alias_value":"2206.00569v2","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.00569","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"pith_short_12","alias_value":"3SJ6Z5WS5C7D","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"pith_short_16","alias_value":"3SJ6Z5WS5C7D6ZBB","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"pith_short_8","alias_value":"3SJ6Z5WS","created_at":"2026-07-05T06:01:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:3SJ6Z5WS5C7D6ZBBXUHFWTNHGK","target":"record","payload":{"canonical_record":{"source":{"id":"2206.00569","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-06-01T15:29:57Z","cross_cats_sorted":[],"title_canon_sha256":"25b3757807200187282afac4eb6f4ffcec7ab6e481991751b6c03707a84450e0","abstract_canon_sha256":"74c73bbbe64e57ac4cffbbf720a504c53097742a6883c647591a0c6bac42fdc6"},"schema_version":"1.0"},"canonical_sha256":"dc93ecf6d2e8be3f6421bd0e5b4da732a4b058525f1554915d5e033aada26434","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:01:34.448809Z","signature_b64":"19lf52RFlpmlQ+q7cRLSCN5d0++j/RtHLwhHVVpTH9+5L+/StwMD+VCZX4lD+u8+aMmR+wTbVwsoq7axxqjvBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dc93ecf6d2e8be3f6421bd0e5b4da732a4b058525f1554915d5e033aada26434","last_reissued_at":"2026-07-05T06:01:34.448297Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:01:34.448297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.00569","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":"2026-07-05T06:01:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e2bVSaYuaBco9bQSTUDZ2WH5WfeFwICuErCjjsV9IY/eSGZwdsxVHcd9eXx9UhxIk7sYV6710UuvljBXA9b6Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:19:11.680827Z"},"content_sha256":"499eedac4634416e3b25c3af08663501aa84de2d4bb28667d8a58f1e62d4f2c3","schema_version":"1.0","event_id":"sha256:499eedac4634416e3b25c3af08663501aa84de2d4bb28667d8a58f1e62d4f2c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:3SJ6Z5WS5C7D6ZBBXUHFWTNHGK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hard superconducting gap in germanium","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Alberto Tosato, Amir Sammak, Carla N. Borja, Casper J. Boor, Francesco Borsoi, Giordano Scappucci, Ji-Yin Wang, Jordi Arbiol, Marc Botifoll, Menno Veldhorst, Sara Mart\\'i-S\\'anchez, Vukan Levajac","submitted_at":"2022-06-01T15:29:57Z","abstract_excerpt":"The co-integration of spin, superconducting, and topological systems is emerging as an exciting pathway for scalable and high-fidelity quantum information technology. High-mobility planar germanium is a front-runner semiconductor for building quantum processors with spin-qubits, but progress with hybrid superconductor-semiconductor devices is hindered because obtaining a superconducting gap free of subgap states (hard gap) has proven difficult. Here we solve this challenge by developing a low-disorder, oxide-free interface between high-mobility planar germanium and a germanosilicide parent sup"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.00569","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/2206.00569/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":"2026-07-05T06:01:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4lsCX4OxXAqzv9Z9P++QEXv4ZRSEOcdXMLAog2scR5afkr6pvHI+usNpCtFtPoFzD/91a5NRWKqcwfgUrxJtAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T18:19:11.681700Z"},"content_sha256":"66c0fdb1a156a06e36c5248f8d1b1b220164a35b5b5de9ce1795ce9a18ae702d","schema_version":"1.0","event_id":"sha256:66c0fdb1a156a06e36c5248f8d1b1b220164a35b5b5de9ce1795ce9a18ae702d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3SJ6Z5WS5C7D6ZBBXUHFWTNHGK/bundle.json","state_url":"https://pith.science/pith/3SJ6Z5WS5C7D6ZBBXUHFWTNHGK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3SJ6Z5WS5C7D6ZBBXUHFWTNHGK/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":"2026-08-10T18:19:11Z","links":{"resolver":"https://pith.science/pith/3SJ6Z5WS5C7D6ZBBXUHFWTNHGK","bundle":"https://pith.science/pith/3SJ6Z5WS5C7D6ZBBXUHFWTNHGK/bundle.json","state":"https://pith.science/pith/3SJ6Z5WS5C7D6ZBBXUHFWTNHGK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3SJ6Z5WS5C7D6ZBBXUHFWTNHGK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:3SJ6Z5WS5C7D6ZBBXUHFWTNHGK","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":"74c73bbbe64e57ac4cffbbf720a504c53097742a6883c647591a0c6bac42fdc6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-06-01T15:29:57Z","title_canon_sha256":"25b3757807200187282afac4eb6f4ffcec7ab6e481991751b6c03707a84450e0"},"schema_version":"1.0","source":{"id":"2206.00569","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.00569","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"arxiv_version","alias_value":"2206.00569v2","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.00569","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"pith_short_12","alias_value":"3SJ6Z5WS5C7D","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"pith_short_16","alias_value":"3SJ6Z5WS5C7D6ZBB","created_at":"2026-07-05T06:01:34Z"},{"alias_kind":"pith_short_8","alias_value":"3SJ6Z5WS","created_at":"2026-07-05T06:01:34Z"}],"graph_snapshots":[{"event_id":"sha256:66c0fdb1a156a06e36c5248f8d1b1b220164a35b5b5de9ce1795ce9a18ae702d","target":"graph","created_at":"2026-07-05T06:01:34Z","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/2206.00569/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The co-integration of spin, superconducting, and topological systems is emerging as an exciting pathway for scalable and high-fidelity quantum information technology. High-mobility planar germanium is a front-runner semiconductor for building quantum processors with spin-qubits, but progress with hybrid superconductor-semiconductor devices is hindered because obtaining a superconducting gap free of subgap states (hard gap) has proven difficult. Here we solve this challenge by developing a low-disorder, oxide-free interface between high-mobility planar germanium and a germanosilicide parent sup","authors_text":"Alberto Tosato, Amir Sammak, Carla N. Borja, Casper J. Boor, Francesco Borsoi, Giordano Scappucci, Ji-Yin Wang, Jordi Arbiol, Marc Botifoll, Menno Veldhorst, Sara Mart\\'i-S\\'anchez, Vukan Levajac","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-06-01T15:29:57Z","title":"Hard superconducting gap in germanium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.00569","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":"sha256:499eedac4634416e3b25c3af08663501aa84de2d4bb28667d8a58f1e62d4f2c3","target":"record","created_at":"2026-07-05T06:01:34Z","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":"74c73bbbe64e57ac4cffbbf720a504c53097742a6883c647591a0c6bac42fdc6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-06-01T15:29:57Z","title_canon_sha256":"25b3757807200187282afac4eb6f4ffcec7ab6e481991751b6c03707a84450e0"},"schema_version":"1.0","source":{"id":"2206.00569","kind":"arxiv","version":2}},"canonical_sha256":"dc93ecf6d2e8be3f6421bd0e5b4da732a4b058525f1554915d5e033aada26434","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dc93ecf6d2e8be3f6421bd0e5b4da732a4b058525f1554915d5e033aada26434","first_computed_at":"2026-07-05T06:01:34.448297Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:01:34.448297Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"19lf52RFlpmlQ+q7cRLSCN5d0++j/RtHLwhHVVpTH9+5L+/StwMD+VCZX4lD+u8+aMmR+wTbVwsoq7axxqjvBw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:01:34.448809Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.00569","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:499eedac4634416e3b25c3af08663501aa84de2d4bb28667d8a58f1e62d4f2c3","sha256:66c0fdb1a156a06e36c5248f8d1b1b220164a35b5b5de9ce1795ce9a18ae702d"],"state_sha256":"8d76482dda72c4870ab287c7d26f844b1b68eae694e5af84a2d8679829cac19c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9H2bwQLSngPJPX+Scz6TtvosXGLK6Wd6rm5ipt/Rs6v6Zx7glI/EsNKQBZT3KvtGmLQF6SCQBRed5k+PWK7aAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T18:19:11.688331Z","bundle_sha256":"94992e792de633b89d5341c7a179f0cfefc064c8b30c47c8e15907fd3edf238a"}}