{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MU7HKRUMU6PSCLWI2LTAMCKC4L","short_pith_number":"pith:MU7HKRUM","canonical_record":{"source":{"id":"1811.01859","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-29T16:42:29Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"8312394da6a718bdac7d0b9a16fa3dbbbfac234374a00332315d7b00ec82fb99","abstract_canon_sha256":"dd188bfe518d32933f97992e42dde0b4f9c0a66a65529953979a7cb3cc057a3e"},"schema_version":"1.0"},"canonical_sha256":"653e75468ca79f212ec8d2e6060942e2d132966fa0988c7dbb573a43f39ff64d","source":{"kind":"arxiv","id":"1811.01859","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.01859","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"arxiv_version","alias_value":"1811.01859v1","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.01859","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"pith_short_12","alias_value":"MU7HKRUMU6PS","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MU7HKRUMU6PSCLWI","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MU7HKRUM","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MU7HKRUMU6PSCLWI2LTAMCKC4L","target":"record","payload":{"canonical_record":{"source":{"id":"1811.01859","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-29T16:42:29Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"8312394da6a718bdac7d0b9a16fa3dbbbfac234374a00332315d7b00ec82fb99","abstract_canon_sha256":"dd188bfe518d32933f97992e42dde0b4f9c0a66a65529953979a7cb3cc057a3e"},"schema_version":"1.0"},"canonical_sha256":"653e75468ca79f212ec8d2e6060942e2d132966fa0988c7dbb573a43f39ff64d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:46.938404Z","signature_b64":"18dRY7JQhBCmeWqdumaCD8UAsyjyAR6EuP6lyvrlGg5L2NWOaN/fg5JwE3K9QkGprQFaRhHvv9fNKUnMmVgZCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"653e75468ca79f212ec8d2e6060942e2d132966fa0988c7dbb573a43f39ff64d","last_reissued_at":"2026-05-18T00:00:46.937934Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:46.937934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.01859","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":"2026-05-18T00:00:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A7v40wykDq6omm0hyAs8dsEk2V7VdA5s/JZKHb6Hr7SmjKecHuug1myOaXXXXcTxvdNrnb4Y+1sZ/DfASBSqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T23:11:54.156008Z"},"content_sha256":"73d3616ea82033f7b5bb717dcd84f5e6e35f5845d588670ab831a543d5ad715c","schema_version":"1.0","event_id":"sha256:73d3616ea82033f7b5bb717dcd84f5e6e35f5845d588670ab831a543d5ad715c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MU7HKRUMU6PSCLWI2LTAMCKC4L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental investigation of the low molecular weight fluoropolymer for the ultracold neutrons storage","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"C. D\\\"using, C. Plonka, P. Geltenbort, Yu.N. Pokotilovski","submitted_at":"2018-10-29T16:42:29Z","abstract_excerpt":"The experimental setup for examining the low-molecular-weight fluoropolymer CF$_{3}$(CF$_{2})_{3}$-O-CF$_{2}$-O-(CF$_{2})_{3}$CF$_{3}$, which is a promising coating material for the walls of storage chambers for ultracold neutrons, is described. The results are detailed. The measurement data are interpreted in the model of a multilayer complex quantum-mechanical potential of the chamber walls."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.01859","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":"2026-05-18T00:00:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"69K9Hq8TYIotDMvavl2Ddr5U4FYDPOZUJf44CklOMgUz91Y/TOt67kPcDofE1Dts6uDVBXFdMxx7yADeFXvkAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T23:11:54.156372Z"},"content_sha256":"fbc2d6140df0935642df836eb58d0f9eb8d96ed4c7bdf48dabef43e424703c61","schema_version":"1.0","event_id":"sha256:fbc2d6140df0935642df836eb58d0f9eb8d96ed4c7bdf48dabef43e424703c61"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MU7HKRUMU6PSCLWI2LTAMCKC4L/bundle.json","state_url":"https://pith.science/pith/MU7HKRUMU6PSCLWI2LTAMCKC4L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MU7HKRUMU6PSCLWI2LTAMCKC4L/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":"2026-06-03T23:11:54Z","links":{"resolver":"https://pith.science/pith/MU7HKRUMU6PSCLWI2LTAMCKC4L","bundle":"https://pith.science/pith/MU7HKRUMU6PSCLWI2LTAMCKC4L/bundle.json","state":"https://pith.science/pith/MU7HKRUMU6PSCLWI2LTAMCKC4L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MU7HKRUMU6PSCLWI2LTAMCKC4L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MU7HKRUMU6PSCLWI2LTAMCKC4L","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":"dd188bfe518d32933f97992e42dde0b4f9c0a66a65529953979a7cb3cc057a3e","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-29T16:42:29Z","title_canon_sha256":"8312394da6a718bdac7d0b9a16fa3dbbbfac234374a00332315d7b00ec82fb99"},"schema_version":"1.0","source":{"id":"1811.01859","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.01859","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"arxiv_version","alias_value":"1811.01859v1","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.01859","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"pith_short_12","alias_value":"MU7HKRUMU6PS","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MU7HKRUMU6PSCLWI","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MU7HKRUM","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:fbc2d6140df0935642df836eb58d0f9eb8d96ed4c7bdf48dabef43e424703c61","target":"graph","created_at":"2026-05-18T00:00:46Z","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":"The experimental setup for examining the low-molecular-weight fluoropolymer CF$_{3}$(CF$_{2})_{3}$-O-CF$_{2}$-O-(CF$_{2})_{3}$CF$_{3}$, which is a promising coating material for the walls of storage chambers for ultracold neutrons, is described. The results are detailed. The measurement data are interpreted in the model of a multilayer complex quantum-mechanical potential of the chamber walls.","authors_text":"C. D\\\"using, C. Plonka, P. Geltenbort, Yu.N. Pokotilovski","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-29T16:42:29Z","title":"Experimental investigation of the low molecular weight fluoropolymer for the ultracold neutrons storage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.01859","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":"sha256:73d3616ea82033f7b5bb717dcd84f5e6e35f5845d588670ab831a543d5ad715c","target":"record","created_at":"2026-05-18T00:00:46Z","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":"dd188bfe518d32933f97992e42dde0b4f9c0a66a65529953979a7cb3cc057a3e","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-10-29T16:42:29Z","title_canon_sha256":"8312394da6a718bdac7d0b9a16fa3dbbbfac234374a00332315d7b00ec82fb99"},"schema_version":"1.0","source":{"id":"1811.01859","kind":"arxiv","version":1}},"canonical_sha256":"653e75468ca79f212ec8d2e6060942e2d132966fa0988c7dbb573a43f39ff64d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"653e75468ca79f212ec8d2e6060942e2d132966fa0988c7dbb573a43f39ff64d","first_computed_at":"2026-05-18T00:00:46.937934Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:46.937934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"18dRY7JQhBCmeWqdumaCD8UAsyjyAR6EuP6lyvrlGg5L2NWOaN/fg5JwE3K9QkGprQFaRhHvv9fNKUnMmVgZCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:46.938404Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.01859","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73d3616ea82033f7b5bb717dcd84f5e6e35f5845d588670ab831a543d5ad715c","sha256:fbc2d6140df0935642df836eb58d0f9eb8d96ed4c7bdf48dabef43e424703c61"],"state_sha256":"800c720f11628ac40df56428ce754f41a0e90204221613c436a7be42240b0584"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lV3oAsPs9hCAob/7h/Dq1qC+0sV9tQ5BZpPv8Hlv0k0UsB6dGqyWehW9ApTWG6GwR6FDs9bUdQk3IXoRA7hICQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T23:11:54.158267Z","bundle_sha256":"fe7e784aa36f38630a8d5960ce29420583d5957b77722d102b920cd74dc64dbf"}}