{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:XYGZMBLJU232C2VHHEJHQF4F45","short_pith_number":"pith:XYGZMBLJ","canonical_record":{"source":{"id":"1804.00996","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-03T14:39:37Z","cross_cats_sorted":[],"title_canon_sha256":"2ae2f16dcd377f087d3f8a630a41f5ea749cc5c056a44b545e03cd40e1e8e83a","abstract_canon_sha256":"654a49432dfc37f1b6aeaa29cf7cb819583913f172ce01250f8f79ac3a718160"},"schema_version":"1.0"},"canonical_sha256":"be0d960569a6b7a16aa73912781785e759245202145d2f50ee1dc2fff7f904fc","source":{"kind":"arxiv","id":"1804.00996","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.00996","created_at":"2026-05-18T00:19:31Z"},{"alias_kind":"arxiv_version","alias_value":"1804.00996v1","created_at":"2026-05-18T00:19:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.00996","created_at":"2026-05-18T00:19:31Z"},{"alias_kind":"pith_short_12","alias_value":"XYGZMBLJU232","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"XYGZMBLJU232C2VH","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"XYGZMBLJ","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:XYGZMBLJU232C2VHHEJHQF4F45","target":"record","payload":{"canonical_record":{"source":{"id":"1804.00996","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-03T14:39:37Z","cross_cats_sorted":[],"title_canon_sha256":"2ae2f16dcd377f087d3f8a630a41f5ea749cc5c056a44b545e03cd40e1e8e83a","abstract_canon_sha256":"654a49432dfc37f1b6aeaa29cf7cb819583913f172ce01250f8f79ac3a718160"},"schema_version":"1.0"},"canonical_sha256":"be0d960569a6b7a16aa73912781785e759245202145d2f50ee1dc2fff7f904fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:31.590051Z","signature_b64":"yfaM6H1yHww3ktyQutqk6UVdJODv19fE4iVCj4iuAgw0EmQlRVjLR7Lh8VfOkUzC3TYyX3APYJGX/p18z8aLCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"be0d960569a6b7a16aa73912781785e759245202145d2f50ee1dc2fff7f904fc","last_reissued_at":"2026-05-18T00:19:31.589649Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:31.589649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.00996","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":"2026-05-18T00:19:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"16PuhcF8cFXwkGpbR9XvU6kCClj9l92RDWtQ9TVQb90MvLgJ8TugP07765VnlRu8Wjkmdv9rb18fR4wceZJACA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:09:44.600762Z"},"content_sha256":"77620c494b759bcfcb247aaa04381648ba3afe222b757365d31fb70d74abc058","schema_version":"1.0","event_id":"sha256:77620c494b759bcfcb247aaa04381648ba3afe222b757365d31fb70d74abc058"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:XYGZMBLJU232C2VHHEJHQF4F45","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Peculiarities in the pseudogap behavior in optimally doped YBa2Cu3O7-{\\delta} single crystals under pressure up to 1GPa","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. L. Solovjov, D. M. Sergeyev, L. V. Omelchenko, O. V. Dobrovolskiy, R.V.Vovk, S. N. Kamchatnaya","submitted_at":"2018-04-03T14:39:37Z","abstract_excerpt":"The influence of the hydrostatic pressure P up to 0.95 GPa on the excess conductivity and the pseudogap {\\Delta}*(T) in optimally doped YBCO single crystals (T_c = 91.1K at ambient pressure) is investigated by electrical resistivity measurements. A pronounced enhancement of the pseudogap under pressure of dln{\\Delta}*/dP= 0.32, which is only a factor of 1.12 smaller than in slightly doped single crystals, is revealed for the first time. This implies a somewhat more moderate increase of the coupling strength in optimally doped cuprates with increasing pressure. Simultaneously, the ratio 2{\\Delt"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00996","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":"2026-05-18T00:19:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8z9NLIZ2+f3VBZzJ4wqA/na3Cjy/0dbTD2Eoj3Azu4QXCHvz6kA/kkc80Y2SksT7LR6C5YeknlUrwAggTxo7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:09:44.601163Z"},"content_sha256":"d6ef8f4cf29d4723ce6b4972978c5935f56e35749d0afb7b49ab6413ccf3bf00","schema_version":"1.0","event_id":"sha256:d6ef8f4cf29d4723ce6b4972978c5935f56e35749d0afb7b49ab6413ccf3bf00"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XYGZMBLJU232C2VHHEJHQF4F45/bundle.json","state_url":"https://pith.science/pith/XYGZMBLJU232C2VHHEJHQF4F45/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XYGZMBLJU232C2VHHEJHQF4F45/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":"2026-05-26T17:09:44Z","links":{"resolver":"https://pith.science/pith/XYGZMBLJU232C2VHHEJHQF4F45","bundle":"https://pith.science/pith/XYGZMBLJU232C2VHHEJHQF4F45/bundle.json","state":"https://pith.science/pith/XYGZMBLJU232C2VHHEJHQF4F45/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XYGZMBLJU232C2VHHEJHQF4F45/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XYGZMBLJU232C2VHHEJHQF4F45","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":"654a49432dfc37f1b6aeaa29cf7cb819583913f172ce01250f8f79ac3a718160","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-03T14:39:37Z","title_canon_sha256":"2ae2f16dcd377f087d3f8a630a41f5ea749cc5c056a44b545e03cd40e1e8e83a"},"schema_version":"1.0","source":{"id":"1804.00996","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.00996","created_at":"2026-05-18T00:19:31Z"},{"alias_kind":"arxiv_version","alias_value":"1804.00996v1","created_at":"2026-05-18T00:19:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.00996","created_at":"2026-05-18T00:19:31Z"},{"alias_kind":"pith_short_12","alias_value":"XYGZMBLJU232","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"XYGZMBLJU232C2VH","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"XYGZMBLJ","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:d6ef8f4cf29d4723ce6b4972978c5935f56e35749d0afb7b49ab6413ccf3bf00","target":"graph","created_at":"2026-05-18T00:19:31Z","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":"The influence of the hydrostatic pressure P up to 0.95 GPa on the excess conductivity and the pseudogap {\\Delta}*(T) in optimally doped YBCO single crystals (T_c = 91.1K at ambient pressure) is investigated by electrical resistivity measurements. A pronounced enhancement of the pseudogap under pressure of dln{\\Delta}*/dP= 0.32, which is only a factor of 1.12 smaller than in slightly doped single crystals, is revealed for the first time. This implies a somewhat more moderate increase of the coupling strength in optimally doped cuprates with increasing pressure. Simultaneously, the ratio 2{\\Delt","authors_text":"A. L. Solovjov, D. M. Sergeyev, L. V. Omelchenko, O. V. Dobrovolskiy, R.V.Vovk, S. N. Kamchatnaya","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-03T14:39:37Z","title":"Peculiarities in the pseudogap behavior in optimally doped YBa2Cu3O7-{\\delta} single crystals under pressure up to 1GPa"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00996","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":"sha256:77620c494b759bcfcb247aaa04381648ba3afe222b757365d31fb70d74abc058","target":"record","created_at":"2026-05-18T00:19:31Z","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":"654a49432dfc37f1b6aeaa29cf7cb819583913f172ce01250f8f79ac3a718160","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-04-03T14:39:37Z","title_canon_sha256":"2ae2f16dcd377f087d3f8a630a41f5ea749cc5c056a44b545e03cd40e1e8e83a"},"schema_version":"1.0","source":{"id":"1804.00996","kind":"arxiv","version":1}},"canonical_sha256":"be0d960569a6b7a16aa73912781785e759245202145d2f50ee1dc2fff7f904fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be0d960569a6b7a16aa73912781785e759245202145d2f50ee1dc2fff7f904fc","first_computed_at":"2026-05-18T00:19:31.589649Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:19:31.589649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yfaM6H1yHww3ktyQutqk6UVdJODv19fE4iVCj4iuAgw0EmQlRVjLR7Lh8VfOkUzC3TYyX3APYJGX/p18z8aLCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:19:31.590051Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.00996","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77620c494b759bcfcb247aaa04381648ba3afe222b757365d31fb70d74abc058","sha256:d6ef8f4cf29d4723ce6b4972978c5935f56e35749d0afb7b49ab6413ccf3bf00"],"state_sha256":"cdc7ef4db8c4c1f3d3bbd5d1d5fc05d8045478fd1fc8fc82a99429c6552b1713"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a+lgYQIIEHtrG7jcx1pRMQ73tjO5ATEuzO4jifa6INeRr93W4X3e3jBLcFxuuyEQsgHkOHCkkLECEfBVSITjCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T17:09:44.604764Z","bundle_sha256":"f7c0d4d4f53f3b154438b6b7f342d6f13289006b6a59feb18f9dd2bf7c7d4f53"}}