{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BF7AY556W65RIBZN73UILGNJP2","short_pith_number":"pith:BF7AY556","canonical_record":{"source":{"id":"1807.01250","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-07-03T15:50:16Z","cross_cats_sorted":[],"title_canon_sha256":"c3577c9cdc840c8533c351c49e52875cbb7ccda66a1802923e3d3b6f45b9ea0f","abstract_canon_sha256":"4e6abfe51ec2d2c4d0256b9df5e24cafddfa9e6540fee75c8c1e0f811e6898fa"},"schema_version":"1.0"},"canonical_sha256":"097e0c77beb7bb14072dfee88599a97eb526a78fa282da2724aac707a97676ec","source":{"kind":"arxiv","id":"1807.01250","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01250","created_at":"2026-05-18T00:06:37Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01250v1","created_at":"2026-05-18T00:06:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01250","created_at":"2026-05-18T00:06:37Z"},{"alias_kind":"pith_short_12","alias_value":"BF7AY556W65R","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BF7AY556W65RIBZN","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BF7AY556","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BF7AY556W65RIBZN73UILGNJP2","target":"record","payload":{"canonical_record":{"source":{"id":"1807.01250","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-07-03T15:50:16Z","cross_cats_sorted":[],"title_canon_sha256":"c3577c9cdc840c8533c351c49e52875cbb7ccda66a1802923e3d3b6f45b9ea0f","abstract_canon_sha256":"4e6abfe51ec2d2c4d0256b9df5e24cafddfa9e6540fee75c8c1e0f811e6898fa"},"schema_version":"1.0"},"canonical_sha256":"097e0c77beb7bb14072dfee88599a97eb526a78fa282da2724aac707a97676ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:37.734213Z","signature_b64":"FZgcl6VVEnjwfihmBj7GV9C9zpyBu2BbQj43aN+4Z+H70yA/+r7JSu2ZzmS99ixItHZFciyqZa3kAktwyGpCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"097e0c77beb7bb14072dfee88599a97eb526a78fa282da2724aac707a97676ec","last_reissued_at":"2026-05-18T00:06:37.733779Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:37.733779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.01250","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":"2026-05-18T00:06:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xM1zdKlJJJbjOcMDYnVGDGd7Z2bp/QjtS/SoeaC1H3ssWdLtIoZoyzRuzDnPoUIP6YCEZtfxl/NwLMI3yUQbAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:50:24.115390Z"},"content_sha256":"2de8162f744325d4b7f7ac779b6b6a30fee766d36c20a9101aba2408b46360a4","schema_version":"1.0","event_id":"sha256:2de8162f744325d4b7f7ac779b6b6a30fee766d36c20a9101aba2408b46360a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BF7AY556W65RIBZN73UILGNJP2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Apparatus for dosing liquid water in ultrahigh vacuum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Jan Balajka, Jiri Pavelec, Michael Schmid, Mojmir Komora, Ulrike Diebold","submitted_at":"2018-07-03T15:50:16Z","abstract_excerpt":"The structure of the solid-liquid interface often defines function and performance of materials in applications. To study the interface at the atomic scale, we extended an ultrahigh vacuum (UHV) surface-science chamber with an apparatus that allows to bring a sample in contact with ultrapure liquid water without exposure to air. In this process, a sample, typically a single crystal prepared and characterized in UHV, is transferred into a separate, small chamber. This chamber already contains a volume of ultrapure water ice, whose vapor pressure is reduced to UHV range by cooling it to cryogeni"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01250","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":"2026-05-18T00:06:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mBXiLmw6pEDTXAQhhXUzwf+MI9uJctNHKvVDhGcXHbMYEW9i0Jdx8tA1YhUFlrvrCMoVLUH+KDrLoT1WxVoVAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:50:24.115730Z"},"content_sha256":"f868f078071854145c58a12815b0b8b4ba3953107be4b2672dc8aab7df31dd5b","schema_version":"1.0","event_id":"sha256:f868f078071854145c58a12815b0b8b4ba3953107be4b2672dc8aab7df31dd5b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BF7AY556W65RIBZN73UILGNJP2/bundle.json","state_url":"https://pith.science/pith/BF7AY556W65RIBZN73UILGNJP2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BF7AY556W65RIBZN73UILGNJP2/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":"2026-06-01T07:50:24Z","links":{"resolver":"https://pith.science/pith/BF7AY556W65RIBZN73UILGNJP2","bundle":"https://pith.science/pith/BF7AY556W65RIBZN73UILGNJP2/bundle.json","state":"https://pith.science/pith/BF7AY556W65RIBZN73UILGNJP2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BF7AY556W65RIBZN73UILGNJP2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BF7AY556W65RIBZN73UILGNJP2","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":"4e6abfe51ec2d2c4d0256b9df5e24cafddfa9e6540fee75c8c1e0f811e6898fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-07-03T15:50:16Z","title_canon_sha256":"c3577c9cdc840c8533c351c49e52875cbb7ccda66a1802923e3d3b6f45b9ea0f"},"schema_version":"1.0","source":{"id":"1807.01250","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01250","created_at":"2026-05-18T00:06:37Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01250v1","created_at":"2026-05-18T00:06:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01250","created_at":"2026-05-18T00:06:37Z"},{"alias_kind":"pith_short_12","alias_value":"BF7AY556W65R","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BF7AY556W65RIBZN","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BF7AY556","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:f868f078071854145c58a12815b0b8b4ba3953107be4b2672dc8aab7df31dd5b","target":"graph","created_at":"2026-05-18T00:06:37Z","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 structure of the solid-liquid interface often defines function and performance of materials in applications. To study the interface at the atomic scale, we extended an ultrahigh vacuum (UHV) surface-science chamber with an apparatus that allows to bring a sample in contact with ultrapure liquid water without exposure to air. In this process, a sample, typically a single crystal prepared and characterized in UHV, is transferred into a separate, small chamber. This chamber already contains a volume of ultrapure water ice, whose vapor pressure is reduced to UHV range by cooling it to cryogeni","authors_text":"Jan Balajka, Jiri Pavelec, Michael Schmid, Mojmir Komora, Ulrike Diebold","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-07-03T15:50:16Z","title":"Apparatus for dosing liquid water in ultrahigh vacuum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01250","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":"sha256:2de8162f744325d4b7f7ac779b6b6a30fee766d36c20a9101aba2408b46360a4","target":"record","created_at":"2026-05-18T00:06:37Z","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":"4e6abfe51ec2d2c4d0256b9df5e24cafddfa9e6540fee75c8c1e0f811e6898fa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-07-03T15:50:16Z","title_canon_sha256":"c3577c9cdc840c8533c351c49e52875cbb7ccda66a1802923e3d3b6f45b9ea0f"},"schema_version":"1.0","source":{"id":"1807.01250","kind":"arxiv","version":1}},"canonical_sha256":"097e0c77beb7bb14072dfee88599a97eb526a78fa282da2724aac707a97676ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"097e0c77beb7bb14072dfee88599a97eb526a78fa282da2724aac707a97676ec","first_computed_at":"2026-05-18T00:06:37.733779Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:37.733779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FZgcl6VVEnjwfihmBj7GV9C9zpyBu2BbQj43aN+4Z+H70yA/+r7JSu2ZzmS99ixItHZFciyqZa3kAktwyGpCAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:37.734213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.01250","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2de8162f744325d4b7f7ac779b6b6a30fee766d36c20a9101aba2408b46360a4","sha256:f868f078071854145c58a12815b0b8b4ba3953107be4b2672dc8aab7df31dd5b"],"state_sha256":"2ffecea74e162116e491cf073c9966c1337da8a70a2bdc35cc5a2b86ca6f7106"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qCLwQUw4Jzztx5H7eL0n7eBB79H5xeGismdN+FYf8+2infmcfuu0IbmnygpW1nAhRViv7ZoQI3btmvIh2QcYCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T07:50:24.117593Z","bundle_sha256":"5bd4a54fedd800a69d81421f9727c1ca92af2f42b3573a0150ab83c132420620"}}