{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:PRLLS67GODRY7KLZD3AZW3FPCZ","short_pith_number":"pith:PRLLS67G","canonical_record":{"source":{"id":"2005.09527","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2020-05-19T15:37:24Z","cross_cats_sorted":[],"title_canon_sha256":"f59f6e5eb40e38eb52cd94af70bdf00497ed2b404a15e4947f85202430d1f30c","abstract_canon_sha256":"f3032700c5ba922116bae594fb9a4a89bce559baafec56742f63271ceb51af53"},"schema_version":"1.0"},"canonical_sha256":"7c56b97be670e38fa9791ec19b6caf16520a425b6a6f5e34b6f86a890df8f43f","source":{"kind":"arxiv","id":"2005.09527","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.09527","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"arxiv_version","alias_value":"2005.09527v1","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.09527","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_12","alias_value":"PRLLS67GODRY","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_16","alias_value":"PRLLS67GODRY7KLZ","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_8","alias_value":"PRLLS67G","created_at":"2026-07-05T01:03:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:PRLLS67GODRY7KLZD3AZW3FPCZ","target":"record","payload":{"canonical_record":{"source":{"id":"2005.09527","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2020-05-19T15:37:24Z","cross_cats_sorted":[],"title_canon_sha256":"f59f6e5eb40e38eb52cd94af70bdf00497ed2b404a15e4947f85202430d1f30c","abstract_canon_sha256":"f3032700c5ba922116bae594fb9a4a89bce559baafec56742f63271ceb51af53"},"schema_version":"1.0"},"canonical_sha256":"7c56b97be670e38fa9791ec19b6caf16520a425b6a6f5e34b6f86a890df8f43f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:03:50.829586Z","signature_b64":"zdeRgOoBzog17/x8B7BliRrjsaG49JFhcy5Gs62+BoWwvd+SEeOjH8NfJe59eeM+VMwYOFG9gzqeCVu/OwXTDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c56b97be670e38fa9791ec19b6caf16520a425b6a6f5e34b6f86a890df8f43f","last_reissued_at":"2026-07-05T01:03:50.829060Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:03:50.829060Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.09527","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":"2026-07-05T01:03:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VI7xYptPAVg30q7xfr4z5cPRMM+O8ru6zstHoAt1qaU9zmEC2ABQC1Q+Y6j/RwTo9ZHemwrvFfxfoBjN5wb5Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:23:36.675577Z"},"content_sha256":"a3b5a8b3514c7276672b65240cb2a656116f151854eaa5fb2339fb587b46df98","schema_version":"1.0","event_id":"sha256:a3b5a8b3514c7276672b65240cb2a656116f151854eaa5fb2339fb587b46df98"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:PRLLS67GODRY7KLZD3AZW3FPCZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evaluating the leeway coefficient for different ocean drifters using operational models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ao-ph","authors_text":"Douglas Schillinger, Fraser Davidson, Graig Sutherland, Gregory C. Smith, Guillaume Marcotte, Hauke Blanken, Johannes R\\\"ohrs, Kai H. Christensen, Knut-Frode Dagestad, Nancy Soontiens, Natacha Bernier, Oyvind Breivik","submitted_at":"2020-05-19T15:37:24Z","abstract_excerpt":"The water following characteristics of six different drifter types are investigated using two different operational marine environmental prediction systems: one produced by Environment and Climate Change Canada (ECCC) and the other produced by the Norwegian Meteorological Institute (METNO). These marine prediction systems include ocean circulation models, atmospheric models, and surface wave models. Two leeway models are tested for use in drift object prediction: an implicit leeway model where the Stokes drift is implicit in the leeway coefficient, and an explicit leeway model where the Stokes"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.09527","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2005.09527/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:03:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xYnm7amip4dhyaFsx5yNHVYljzj+P0msbqR5Rdc+rb09rs9E+WNBVAoDkjKyady+Ikg7bYbaGqHQ/xc8wwa9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:23:36.676128Z"},"content_sha256":"f33d992c15365107c5737b121ad23cc3693f5d52441b410b7a3bdb890214fc93","schema_version":"1.0","event_id":"sha256:f33d992c15365107c5737b121ad23cc3693f5d52441b410b7a3bdb890214fc93"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PRLLS67GODRY7KLZD3AZW3FPCZ/bundle.json","state_url":"https://pith.science/pith/PRLLS67GODRY7KLZD3AZW3FPCZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PRLLS67GODRY7KLZD3AZW3FPCZ/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":"2026-08-07T16:23:36Z","links":{"resolver":"https://pith.science/pith/PRLLS67GODRY7KLZD3AZW3FPCZ","bundle":"https://pith.science/pith/PRLLS67GODRY7KLZD3AZW3FPCZ/bundle.json","state":"https://pith.science/pith/PRLLS67GODRY7KLZD3AZW3FPCZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PRLLS67GODRY7KLZD3AZW3FPCZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PRLLS67GODRY7KLZD3AZW3FPCZ","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":"f3032700c5ba922116bae594fb9a4a89bce559baafec56742f63271ceb51af53","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2020-05-19T15:37:24Z","title_canon_sha256":"f59f6e5eb40e38eb52cd94af70bdf00497ed2b404a15e4947f85202430d1f30c"},"schema_version":"1.0","source":{"id":"2005.09527","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.09527","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"arxiv_version","alias_value":"2005.09527v1","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.09527","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_12","alias_value":"PRLLS67GODRY","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_16","alias_value":"PRLLS67GODRY7KLZ","created_at":"2026-07-05T01:03:50Z"},{"alias_kind":"pith_short_8","alias_value":"PRLLS67G","created_at":"2026-07-05T01:03:50Z"}],"graph_snapshots":[{"event_id":"sha256:f33d992c15365107c5737b121ad23cc3693f5d52441b410b7a3bdb890214fc93","target":"graph","created_at":"2026-07-05T01:03:50Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2005.09527/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The water following characteristics of six different drifter types are investigated using two different operational marine environmental prediction systems: one produced by Environment and Climate Change Canada (ECCC) and the other produced by the Norwegian Meteorological Institute (METNO). These marine prediction systems include ocean circulation models, atmospheric models, and surface wave models. Two leeway models are tested for use in drift object prediction: an implicit leeway model where the Stokes drift is implicit in the leeway coefficient, and an explicit leeway model where the Stokes","authors_text":"Douglas Schillinger, Fraser Davidson, Graig Sutherland, Gregory C. Smith, Guillaume Marcotte, Hauke Blanken, Johannes R\\\"ohrs, Kai H. Christensen, Knut-Frode Dagestad, Nancy Soontiens, Natacha Bernier, Oyvind Breivik","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2020-05-19T15:37:24Z","title":"Evaluating the leeway coefficient for different ocean drifters using operational models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.09527","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:a3b5a8b3514c7276672b65240cb2a656116f151854eaa5fb2339fb587b46df98","target":"record","created_at":"2026-07-05T01:03:50Z","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":"f3032700c5ba922116bae594fb9a4a89bce559baafec56742f63271ceb51af53","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2020-05-19T15:37:24Z","title_canon_sha256":"f59f6e5eb40e38eb52cd94af70bdf00497ed2b404a15e4947f85202430d1f30c"},"schema_version":"1.0","source":{"id":"2005.09527","kind":"arxiv","version":1}},"canonical_sha256":"7c56b97be670e38fa9791ec19b6caf16520a425b6a6f5e34b6f86a890df8f43f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c56b97be670e38fa9791ec19b6caf16520a425b6a6f5e34b6f86a890df8f43f","first_computed_at":"2026-07-05T01:03:50.829060Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:03:50.829060Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zdeRgOoBzog17/x8B7BliRrjsaG49JFhcy5Gs62+BoWwvd+SEeOjH8NfJe59eeM+VMwYOFG9gzqeCVu/OwXTDA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:03:50.829586Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.09527","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a3b5a8b3514c7276672b65240cb2a656116f151854eaa5fb2339fb587b46df98","sha256:f33d992c15365107c5737b121ad23cc3693f5d52441b410b7a3bdb890214fc93"],"state_sha256":"bf2e11fffccd45fd8d8e09dbfcfd7d7e4fb4d1f8bc6a71eda3b6b680e90aaf7a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GiFzdZX+Pfiq8uSDoiI6wZm3G/0cuXZzJ7BEZ4DuNxIipUBimslBCwAP4/VPGXV7NljNootIf6uIz2OzMiBfAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:23:36.680960Z","bundle_sha256":"43e828645799250b85ade8ddb661b602aef884662ce593e0be0718b7cda95433"}}