{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:WSRCLQ52CXCIMGAVRSEDFHW7QH","short_pith_number":"pith:WSRCLQ52","canonical_record":{"source":{"id":"1601.07718","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2016-01-28T10:42:12Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"bd9a500aae92e32f776ed47a209fee094b291de675cdfe1e77e0ff026d4dec5e","abstract_canon_sha256":"b56a5c4bef34dcc85b9947828fd5a7eb6b2e2e9beeddef74a78ab4998e1e7aef"},"schema_version":"1.0"},"canonical_sha256":"b4a225c3ba15c48618158c88329edf81d8ada9c16aec6640e0ecb0e3c13dc7ca","source":{"kind":"arxiv","id":"1601.07718","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.07718","created_at":"2026-05-18T01:02:13Z"},{"alias_kind":"arxiv_version","alias_value":"1601.07718v2","created_at":"2026-05-18T01:02:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.07718","created_at":"2026-05-18T01:02:13Z"},{"alias_kind":"pith_short_12","alias_value":"WSRCLQ52CXCI","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WSRCLQ52CXCIMGAV","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WSRCLQ52","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:WSRCLQ52CXCIMGAVRSEDFHW7QH","target":"record","payload":{"canonical_record":{"source":{"id":"1601.07718","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2016-01-28T10:42:12Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"bd9a500aae92e32f776ed47a209fee094b291de675cdfe1e77e0ff026d4dec5e","abstract_canon_sha256":"b56a5c4bef34dcc85b9947828fd5a7eb6b2e2e9beeddef74a78ab4998e1e7aef"},"schema_version":"1.0"},"canonical_sha256":"b4a225c3ba15c48618158c88329edf81d8ada9c16aec6640e0ecb0e3c13dc7ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:13.268491Z","signature_b64":"A7Ox0tXi+w8EmWUaNTCKljRFuZE9cSSdqHwwSREi7OwWmekAZSD9kTTMA2MlV/29IadvAMi+c4s49fBCPcUvCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4a225c3ba15c48618158c88329edf81d8ada9c16aec6640e0ecb0e3c13dc7ca","last_reissued_at":"2026-05-18T01:02:13.267601Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:13.267601Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.07718","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":"2026-05-18T01:02:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+hDy/Z1XFGn1QrjkKkKmwvQn7dxDNr49zdCdj159YnQu5sX37EcKPp5ueJ0tocqnCcbYbKaDhE8jQcOog0B4Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T23:14:11.657552Z"},"content_sha256":"b0480c3c824f1fecbd0d92ed01f0ff217b8bedb3aeddac2ddce421eb2f15fb86","schema_version":"1.0","event_id":"sha256:b0480c3c824f1fecbd0d92ed01f0ff217b8bedb3aeddac2ddce421eb2f15fb86"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:WSRCLQ52CXCIMGAVRSEDFHW7QH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Diamond Magnetometry of Meissner Currents in a Superconducting Film","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.supr-con","authors_text":"Eyal Buks, Nir Alfasi, Oleg Shtempeluk, Sergei Masis, Valleri Kochetok","submitted_at":"2016-01-28T10:42:12Z","abstract_excerpt":"We study magnetic field penetration into a thin film made of a superconducting niobium. Imaging of magnetic field is performed by optically detecting magnetic resonances of negatively charged nitrogen-vacancy defects inside a single crystal diamond, which is attached to the niobium film under study. The experimental results are compared with theoretical predictions based on the critical state model, and good agreement is obtained."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.07718","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":""},"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":"2026-05-18T01:02:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2rirtpgZxukQcXG7Kw9cU0pSPRsRa0RSHiaQtnCtQbJoIUrJy0Ngo/Ls03aOwWKCSnoZph6BOSfNNaFZb7YjCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T23:14:11.657908Z"},"content_sha256":"5b547053003077511962ed2933b43a48782f874e92228e33f35557d75446ea9d","schema_version":"1.0","event_id":"sha256:5b547053003077511962ed2933b43a48782f874e92228e33f35557d75446ea9d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WSRCLQ52CXCIMGAVRSEDFHW7QH/bundle.json","state_url":"https://pith.science/pith/WSRCLQ52CXCIMGAVRSEDFHW7QH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WSRCLQ52CXCIMGAVRSEDFHW7QH/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":"2026-05-21T23:14:11Z","links":{"resolver":"https://pith.science/pith/WSRCLQ52CXCIMGAVRSEDFHW7QH","bundle":"https://pith.science/pith/WSRCLQ52CXCIMGAVRSEDFHW7QH/bundle.json","state":"https://pith.science/pith/WSRCLQ52CXCIMGAVRSEDFHW7QH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WSRCLQ52CXCIMGAVRSEDFHW7QH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WSRCLQ52CXCIMGAVRSEDFHW7QH","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":"b56a5c4bef34dcc85b9947828fd5a7eb6b2e2e9beeddef74a78ab4998e1e7aef","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2016-01-28T10:42:12Z","title_canon_sha256":"bd9a500aae92e32f776ed47a209fee094b291de675cdfe1e77e0ff026d4dec5e"},"schema_version":"1.0","source":{"id":"1601.07718","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.07718","created_at":"2026-05-18T01:02:13Z"},{"alias_kind":"arxiv_version","alias_value":"1601.07718v2","created_at":"2026-05-18T01:02:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.07718","created_at":"2026-05-18T01:02:13Z"},{"alias_kind":"pith_short_12","alias_value":"WSRCLQ52CXCI","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WSRCLQ52CXCIMGAV","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WSRCLQ52","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:5b547053003077511962ed2933b43a48782f874e92228e33f35557d75446ea9d","target":"graph","created_at":"2026-05-18T01:02:13Z","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":"We study magnetic field penetration into a thin film made of a superconducting niobium. Imaging of magnetic field is performed by optically detecting magnetic resonances of negatively charged nitrogen-vacancy defects inside a single crystal diamond, which is attached to the niobium film under study. The experimental results are compared with theoretical predictions based on the critical state model, and good agreement is obtained.","authors_text":"Eyal Buks, Nir Alfasi, Oleg Shtempeluk, Sergei Masis, Valleri Kochetok","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2016-01-28T10:42:12Z","title":"Diamond Magnetometry of Meissner Currents in a Superconducting Film"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.07718","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:b0480c3c824f1fecbd0d92ed01f0ff217b8bedb3aeddac2ddce421eb2f15fb86","target":"record","created_at":"2026-05-18T01:02:13Z","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":"b56a5c4bef34dcc85b9947828fd5a7eb6b2e2e9beeddef74a78ab4998e1e7aef","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2016-01-28T10:42:12Z","title_canon_sha256":"bd9a500aae92e32f776ed47a209fee094b291de675cdfe1e77e0ff026d4dec5e"},"schema_version":"1.0","source":{"id":"1601.07718","kind":"arxiv","version":2}},"canonical_sha256":"b4a225c3ba15c48618158c88329edf81d8ada9c16aec6640e0ecb0e3c13dc7ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4a225c3ba15c48618158c88329edf81d8ada9c16aec6640e0ecb0e3c13dc7ca","first_computed_at":"2026-05-18T01:02:13.267601Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:13.267601Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A7Ox0tXi+w8EmWUaNTCKljRFuZE9cSSdqHwwSREi7OwWmekAZSD9kTTMA2MlV/29IadvAMi+c4s49fBCPcUvCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:13.268491Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.07718","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0480c3c824f1fecbd0d92ed01f0ff217b8bedb3aeddac2ddce421eb2f15fb86","sha256:5b547053003077511962ed2933b43a48782f874e92228e33f35557d75446ea9d"],"state_sha256":"52e7c785945ee40cf7f831f593f8f64d1dd7ba3f66ee27a5796321fb7d700413"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"59sndYS3CyMMPGA3yyOFY3t6M56gGVOZTLz62tnpJ1Xkl7DySYv48TxvzTpICaWHHqZDno+7NFnWHkqTR0z2Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T23:14:11.660020Z","bundle_sha256":"1d031b0bc40a8e06e4527263c0c9522a803180187f6cce81c636d769169fba42"}}