{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:W3IVLHQC4HN3UKRLPIHVPFWPZE","short_pith_number":"pith:W3IVLHQC","canonical_record":{"source":{"id":"1808.07965","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2018-08-23T23:28:26Z","cross_cats_sorted":[],"title_canon_sha256":"e134b94ab9f6fe8e5515a311400647ccd8ce96c19ab48276c88aadba31f622d8","abstract_canon_sha256":"0fc28b2b630cfe53c19cc3e8d7743943c0da1ac1fc7f689206d76c7ac6fbd65f"},"schema_version":"1.0"},"canonical_sha256":"b6d1559e02e1dbba2a2b7a0f5796cfc90326f3847f168f6718dd5c1fc92f2d9a","source":{"kind":"arxiv","id":"1808.07965","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07965","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07965v1","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07965","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"W3IVLHQC4HN3","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"W3IVLHQC4HN3UKRL","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"W3IVLHQC","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:W3IVLHQC4HN3UKRLPIHVPFWPZE","target":"record","payload":{"canonical_record":{"source":{"id":"1808.07965","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2018-08-23T23:28:26Z","cross_cats_sorted":[],"title_canon_sha256":"e134b94ab9f6fe8e5515a311400647ccd8ce96c19ab48276c88aadba31f622d8","abstract_canon_sha256":"0fc28b2b630cfe53c19cc3e8d7743943c0da1ac1fc7f689206d76c7ac6fbd65f"},"schema_version":"1.0"},"canonical_sha256":"b6d1559e02e1dbba2a2b7a0f5796cfc90326f3847f168f6718dd5c1fc92f2d9a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:12.731614Z","signature_b64":"ig5lRoJFlngwNA3+YSIb3poUlsD/36rKdWaGAEeHX7/5b14GXwUsSlknhgjRDF9AbANRImmQrgey6SwITLSLCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b6d1559e02e1dbba2a2b7a0f5796cfc90326f3847f168f6718dd5c1fc92f2d9a","last_reissued_at":"2026-05-17T23:50:12.731176Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:12.731176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.07965","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":"2026-05-17T23:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DDnBslXTz1SWelhczBigKANYBFNlcUOpLP0EWuPbSfv/Ux4XgADMZSjOHMjSrZS5+J9lZ7BtWrX087SeFOvWAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T19:18:40.348918Z"},"content_sha256":"cff9eb8c9685df636256662731aee8ce6eea2c572223484dd2676a3c5a8cd071","schema_version":"1.0","event_id":"sha256:cff9eb8c9685df636256662731aee8ce6eea2c572223484dd2676a3c5a8cd071"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:W3IVLHQC4HN3UKRLPIHVPFWPZE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A transport method for restoring incomplete ocean current measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ao-ph","authors_text":"Shawn C. Shadden, Siavash Ameli","submitted_at":"2018-08-23T23:28:26Z","abstract_excerpt":"Remote sensing of oceanographic data often yields incomplete coverage of the measurement domain. This can limit interpretability of the data and identification of coherent features informative of ocean dynamics. Several methods exist to fill gaps of missing oceanographic data, and are often based on projecting the measurements onto basis functions or a statistical model. Herein, we use an information transport approach inspired from an image processing algorithm. This approach aims to restore gaps in data by advecting and diffusing information of features as opposed to the field itself. Since "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07965","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":"2026-05-17T23:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VaiRbAj3UEpUgvX3wiQ7nKXAP35x9dITQf8nDdWgG4g1LRJ1y9Y82NIDTXiN+x86IO1vedYeqhPBiHUqJ4nlDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T19:18:40.349257Z"},"content_sha256":"d3ff5b914b3dd063a8632033ca775e06c53a11cb0d2d3d4088e20912e98a7378","schema_version":"1.0","event_id":"sha256:d3ff5b914b3dd063a8632033ca775e06c53a11cb0d2d3d4088e20912e98a7378"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W3IVLHQC4HN3UKRLPIHVPFWPZE/bundle.json","state_url":"https://pith.science/pith/W3IVLHQC4HN3UKRLPIHVPFWPZE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W3IVLHQC4HN3UKRLPIHVPFWPZE/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":"2026-06-20T19:18:40Z","links":{"resolver":"https://pith.science/pith/W3IVLHQC4HN3UKRLPIHVPFWPZE","bundle":"https://pith.science/pith/W3IVLHQC4HN3UKRLPIHVPFWPZE/bundle.json","state":"https://pith.science/pith/W3IVLHQC4HN3UKRLPIHVPFWPZE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W3IVLHQC4HN3UKRLPIHVPFWPZE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:W3IVLHQC4HN3UKRLPIHVPFWPZE","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":"0fc28b2b630cfe53c19cc3e8d7743943c0da1ac1fc7f689206d76c7ac6fbd65f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2018-08-23T23:28:26Z","title_canon_sha256":"e134b94ab9f6fe8e5515a311400647ccd8ce96c19ab48276c88aadba31f622d8"},"schema_version":"1.0","source":{"id":"1808.07965","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07965","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07965v1","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07965","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"W3IVLHQC4HN3","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"W3IVLHQC4HN3UKRL","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"W3IVLHQC","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:d3ff5b914b3dd063a8632033ca775e06c53a11cb0d2d3d4088e20912e98a7378","target":"graph","created_at":"2026-05-17T23:50:12Z","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":"Remote sensing of oceanographic data often yields incomplete coverage of the measurement domain. This can limit interpretability of the data and identification of coherent features informative of ocean dynamics. Several methods exist to fill gaps of missing oceanographic data, and are often based on projecting the measurements onto basis functions or a statistical model. Herein, we use an information transport approach inspired from an image processing algorithm. This approach aims to restore gaps in data by advecting and diffusing information of features as opposed to the field itself. Since ","authors_text":"Shawn C. Shadden, Siavash Ameli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2018-08-23T23:28:26Z","title":"A transport method for restoring incomplete ocean current measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07965","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:cff9eb8c9685df636256662731aee8ce6eea2c572223484dd2676a3c5a8cd071","target":"record","created_at":"2026-05-17T23:50:12Z","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":"0fc28b2b630cfe53c19cc3e8d7743943c0da1ac1fc7f689206d76c7ac6fbd65f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2018-08-23T23:28:26Z","title_canon_sha256":"e134b94ab9f6fe8e5515a311400647ccd8ce96c19ab48276c88aadba31f622d8"},"schema_version":"1.0","source":{"id":"1808.07965","kind":"arxiv","version":1}},"canonical_sha256":"b6d1559e02e1dbba2a2b7a0f5796cfc90326f3847f168f6718dd5c1fc92f2d9a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b6d1559e02e1dbba2a2b7a0f5796cfc90326f3847f168f6718dd5c1fc92f2d9a","first_computed_at":"2026-05-17T23:50:12.731176Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:12.731176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ig5lRoJFlngwNA3+YSIb3poUlsD/36rKdWaGAEeHX7/5b14GXwUsSlknhgjRDF9AbANRImmQrgey6SwITLSLCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:12.731614Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07965","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cff9eb8c9685df636256662731aee8ce6eea2c572223484dd2676a3c5a8cd071","sha256:d3ff5b914b3dd063a8632033ca775e06c53a11cb0d2d3d4088e20912e98a7378"],"state_sha256":"f115f22b641848cb0159355ae489a44f9171610e6e8acce69a5c795a470c652f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XzWzbo531H/oGb2cNsgVjdK50O+mRRrwNrTu6xkDm4aAXexdjNk1FwmSaRigDzvwBf33tf2Q2lbdH2lwy5HaAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T19:18:40.351127Z","bundle_sha256":"c3b3a6eb177d592264b44e8e20a8324e73543adcf5989e02f49f865ef12f87b7"}}