{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:VFTPIGSWC24LM33LUMX5H5XG5N","short_pith_number":"pith:VFTPIGSW","canonical_record":{"source":{"id":"1902.10206","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-26T20:33:03Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"9e799b8b8d87a91c74df2e0c5bf41fedbeefbfebfaa8ce81c6fe61dccd90923d","abstract_canon_sha256":"4c5f0d69ee34d3496cf3d20ad77129795d65a041f97c782a73ddba8765e9a443"},"schema_version":"1.0"},"canonical_sha256":"a966f41a5616b8b66f6ba32fd3f6e6eb7f01365d339abc1088f424f489fd5457","source":{"kind":"arxiv","id":"1902.10206","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.10206","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"arxiv_version","alias_value":"1902.10206v4","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.10206","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"pith_short_12","alias_value":"VFTPIGSWC24L","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"pith_short_16","alias_value":"VFTPIGSWC24LM33L","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"pith_short_8","alias_value":"VFTPIGSW","created_at":"2026-07-05T00:21:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:VFTPIGSWC24LM33LUMX5H5XG5N","target":"record","payload":{"canonical_record":{"source":{"id":"1902.10206","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-26T20:33:03Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"9e799b8b8d87a91c74df2e0c5bf41fedbeefbfebfaa8ce81c6fe61dccd90923d","abstract_canon_sha256":"4c5f0d69ee34d3496cf3d20ad77129795d65a041f97c782a73ddba8765e9a443"},"schema_version":"1.0"},"canonical_sha256":"a966f41a5616b8b66f6ba32fd3f6e6eb7f01365d339abc1088f424f489fd5457","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:21:22.754395Z","signature_b64":"hcTFa4Je9luHP7UGOv+UUYGA+z5odtKQGNRmvyaOChazl40DhamPnc7x/5plcLfvPerl5qVY5aK523ac0HYUCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a966f41a5616b8b66f6ba32fd3f6e6eb7f01365d339abc1088f424f489fd5457","last_reissued_at":"2026-07-05T00:21:22.753967Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:21:22.753967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.10206","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:21:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TeaUvXl5ChmvCwdWhMS/MCFysJMohPjOprbqxUswD7Bt1HsCAoGDh1k390G1+uz97K2080xYN9JuKxmTuBLCDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T03:51:24.119738Z"},"content_sha256":"154230e9a0f9e113255df4794619605a0055af402412d92b1328d73ff4e962e5","schema_version":"1.0","event_id":"sha256:154230e9a0f9e113255df4794619605a0055af402412d92b1328d73ff4e962e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:VFTPIGSWC24LM33LUMX5H5XG5N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superconductivity at 161 K in Thorium Hydride $ThH_{10}$: Synthesis and Properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexander G. Kvashnin, Andrey V. Sadakov, Anna G. Ivanova, Artem R. Oganov, Dmitrii V. Semenok, Ivan A. Troyan, Oleg A. Sobolevskiy, Vladimir M. Pudalov, Volodymyr Svitlyk, Vyacheslav Yu. Fominski","submitted_at":"2019-02-26T20:33:03Z","abstract_excerpt":"Here we report targeted high-pressure synthesis of two novel high-$T_C$ hydride superconductors, $P6_3/mmc$-$ThH_9$ and $Fm\\bar{3}m$-$ThH_{10}$, with the experimental critical temperatures ($T_C$) of 146 K and 159-161 K and upper critical magnetic fields ($\\mu$$H_C$) 38 and 45 Tesla at pressures 170-175 Gigapascals, respectively. Superconductivity was evidenced by the observation of zero resistance and a decrease of $T_C$ under external magnetic field up to 16 Tesla. This is one of the highest critical temperatures that has been achieved experimentally in any compounds, along with such materia"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.10206","kind":"arxiv","version":4},"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/1902.10206/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":"2026-07-05T00:21:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0k0p9+azALeEg7tGypmUPOzThdLuWTK7jIi/2s76WOTNd2xJF2wo0qUFLkzdBkrVx/FHACmJ2h3tQ45gTgpHAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T03:51:24.120444Z"},"content_sha256":"76b7980713a19d7640a717f925fd1ea99172d3ed69dfd67c852c792b15306d43","schema_version":"1.0","event_id":"sha256:76b7980713a19d7640a717f925fd1ea99172d3ed69dfd67c852c792b15306d43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VFTPIGSWC24LM33LUMX5H5XG5N/bundle.json","state_url":"https://pith.science/pith/VFTPIGSWC24LM33LUMX5H5XG5N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VFTPIGSWC24LM33LUMX5H5XG5N/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":"2026-07-07T03:51:24Z","links":{"resolver":"https://pith.science/pith/VFTPIGSWC24LM33LUMX5H5XG5N","bundle":"https://pith.science/pith/VFTPIGSWC24LM33LUMX5H5XG5N/bundle.json","state":"https://pith.science/pith/VFTPIGSWC24LM33LUMX5H5XG5N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VFTPIGSWC24LM33LUMX5H5XG5N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VFTPIGSWC24LM33LUMX5H5XG5N","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":"4c5f0d69ee34d3496cf3d20ad77129795d65a041f97c782a73ddba8765e9a443","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-26T20:33:03Z","title_canon_sha256":"9e799b8b8d87a91c74df2e0c5bf41fedbeefbfebfaa8ce81c6fe61dccd90923d"},"schema_version":"1.0","source":{"id":"1902.10206","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.10206","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"arxiv_version","alias_value":"1902.10206v4","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.10206","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"pith_short_12","alias_value":"VFTPIGSWC24L","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"pith_short_16","alias_value":"VFTPIGSWC24LM33L","created_at":"2026-07-05T00:21:22Z"},{"alias_kind":"pith_short_8","alias_value":"VFTPIGSW","created_at":"2026-07-05T00:21:22Z"}],"graph_snapshots":[{"event_id":"sha256:76b7980713a19d7640a717f925fd1ea99172d3ed69dfd67c852c792b15306d43","target":"graph","created_at":"2026-07-05T00:21:22Z","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/1902.10206/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Here we report targeted high-pressure synthesis of two novel high-$T_C$ hydride superconductors, $P6_3/mmc$-$ThH_9$ and $Fm\\bar{3}m$-$ThH_{10}$, with the experimental critical temperatures ($T_C$) of 146 K and 159-161 K and upper critical magnetic fields ($\\mu$$H_C$) 38 and 45 Tesla at pressures 170-175 Gigapascals, respectively. Superconductivity was evidenced by the observation of zero resistance and a decrease of $T_C$ under external magnetic field up to 16 Tesla. This is one of the highest critical temperatures that has been achieved experimentally in any compounds, along with such materia","authors_text":"Alexander G. Kvashnin, Andrey V. Sadakov, Anna G. Ivanova, Artem R. Oganov, Dmitrii V. Semenok, Ivan A. Troyan, Oleg A. Sobolevskiy, Vladimir M. Pudalov, Volodymyr Svitlyk, Vyacheslav Yu. Fominski","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-26T20:33:03Z","title":"Superconductivity at 161 K in Thorium Hydride $ThH_{10}$: Synthesis and Properties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.10206","kind":"arxiv","version":4},"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":"sha256:154230e9a0f9e113255df4794619605a0055af402412d92b1328d73ff4e962e5","target":"record","created_at":"2026-07-05T00:21:22Z","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":"4c5f0d69ee34d3496cf3d20ad77129795d65a041f97c782a73ddba8765e9a443","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-02-26T20:33:03Z","title_canon_sha256":"9e799b8b8d87a91c74df2e0c5bf41fedbeefbfebfaa8ce81c6fe61dccd90923d"},"schema_version":"1.0","source":{"id":"1902.10206","kind":"arxiv","version":4}},"canonical_sha256":"a966f41a5616b8b66f6ba32fd3f6e6eb7f01365d339abc1088f424f489fd5457","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a966f41a5616b8b66f6ba32fd3f6e6eb7f01365d339abc1088f424f489fd5457","first_computed_at":"2026-07-05T00:21:22.753967Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:21:22.753967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hcTFa4Je9luHP7UGOv+UUYGA+z5odtKQGNRmvyaOChazl40DhamPnc7x/5plcLfvPerl5qVY5aK523ac0HYUCw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:21:22.754395Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.10206","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:154230e9a0f9e113255df4794619605a0055af402412d92b1328d73ff4e962e5","sha256:76b7980713a19d7640a717f925fd1ea99172d3ed69dfd67c852c792b15306d43"],"state_sha256":"51e6b930c71e730d8cbd2ed5b1fb0a223d4d3918f21f1f9629831c03452d27ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z0MAOsYhYuQkHvx6AA6uBDKtoKP7MQICTbDBG0rakZPMFVgVuisAR5VIUYcrjt+30cWl+d06UFbogRADH4B/Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T03:51:24.122431Z","bundle_sha256":"7f976d4db6a1099cf037a0a4a48c91682e30bb8271339e72a31d6225353aed88"}}