{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:OYPSRYLX3J37SJFCVICYWI6U3E","short_pith_number":"pith:OYPSRYLX","canonical_record":{"source":{"id":"2606.11356","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-06-09T18:32:42Z","cross_cats_sorted":["cs.DC","cs.SE","physics.comp-ph"],"title_canon_sha256":"302f07a2ba27523b79d2684edb23ebc88f1067265986f1e79b97a47250eaf5d0","abstract_canon_sha256":"caa8fe86766a87fb5c3bd512ffcb04f9f4b18a37122563c4f4a6c29e9c199032"},"schema_version":"1.0"},"canonical_sha256":"761f28e177da77f924a2aa058b23d4d91be0f72273bdbab27ded86ce0746f63f","source":{"kind":"arxiv","id":"2606.11356","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.11356","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"arxiv_version","alias_value":"2606.11356v1","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.11356","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"pith_short_12","alias_value":"OYPSRYLX3J37","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"pith_short_16","alias_value":"OYPSRYLX3J37SJFC","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"pith_short_8","alias_value":"OYPSRYLX","created_at":"2026-06-11T00:08:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:OYPSRYLX3J37SJFCVICYWI6U3E","target":"record","payload":{"canonical_record":{"source":{"id":"2606.11356","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-06-09T18:32:42Z","cross_cats_sorted":["cs.DC","cs.SE","physics.comp-ph"],"title_canon_sha256":"302f07a2ba27523b79d2684edb23ebc88f1067265986f1e79b97a47250eaf5d0","abstract_canon_sha256":"caa8fe86766a87fb5c3bd512ffcb04f9f4b18a37122563c4f4a6c29e9c199032"},"schema_version":"1.0"},"canonical_sha256":"761f28e177da77f924a2aa058b23d4d91be0f72273bdbab27ded86ce0746f63f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-11T00:08:21.401576Z","signature_b64":"J36WR5Bu7O55gvjmjVwqTfGAom6rQ+1Zz1RWzi6p9/CgvqXYg2GATqVXeuoFoNODltG1WdediEaFfYuz2JxaBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"761f28e177da77f924a2aa058b23d4d91be0f72273bdbab27ded86ce0746f63f","last_reissued_at":"2026-06-11T00:08:21.400741Z","signature_status":"signed_v1","first_computed_at":"2026-06-11T00:08:21.400741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.11356","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":"2026-06-11T00:08:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z1WRJHmR+X7/DbWrRnZb8T5zASc8egjSWYmkMJDPTrc+BNbYGwdy0ll6Bnel8ETv6VHsWJ8z3j7ooPvqdp+0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T10:58:30.957218Z"},"content_sha256":"42562e02181c3d9cf64cb7ca90e828c3c93c2a8dbccf3dfb7d929c3ca0c7a4d7","schema_version":"1.0","event_id":"sha256:42562e02181c3d9cf64cb7ca90e828c3c93c2a8dbccf3dfb7d929c3ca0c7a4d7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:OYPSRYLX3J37SJFCVICYWI6U3E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Ocean Model Ported by a Large Language Model: Experience and Lessons from FESOM2 (Fortran to C to C++/Kokkos)","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.DC","cs.SE","physics.comp-ph"],"primary_cat":"physics.ao-ph","authors_text":"Dmitry Sidorenko, Nikolay V. Koldunov, Sebastian Beyer, Sergey Danilov, Suvarchal K. Cheedela, Thomas Jung","submitted_at":"2026-06-09T18:32:42Z","abstract_excerpt":"Large language models (LLMs) can translate and modify source code, and have been shown to do so for codes of different complexity. Whether they can port a complete, production geophysical model to a different language without degrading its physics has not been established. We demonstrate that LLM-assisted code translation can preserve the physics of a complete production ocean model while moving it into a modern performance-portable form. We report our experience using an agentic LLM coding assistant, directed by domain experts, to port the FESOM2 unstructured mesh ocean--sea-ice model (about "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.11356","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/2606.11356/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":"2026-06-11T00:08:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Do5+DfFv+uVQ3qPuZsK4JMa668o0q7/+6/Cb0XwYaP685aZGjO95q0olSAJic82ygwkYhpZ6Yo7RvLmfs0BdDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T10:58:30.957610Z"},"content_sha256":"44978ce68d3f6770cea64001d4b7e48d1d07e1f91e821f0bdcaf46741b61af34","schema_version":"1.0","event_id":"sha256:44978ce68d3f6770cea64001d4b7e48d1d07e1f91e821f0bdcaf46741b61af34"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OYPSRYLX3J37SJFCVICYWI6U3E/bundle.json","state_url":"https://pith.science/pith/OYPSRYLX3J37SJFCVICYWI6U3E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OYPSRYLX3J37SJFCVICYWI6U3E/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":"2026-06-26T10:58:30Z","links":{"resolver":"https://pith.science/pith/OYPSRYLX3J37SJFCVICYWI6U3E","bundle":"https://pith.science/pith/OYPSRYLX3J37SJFCVICYWI6U3E/bundle.json","state":"https://pith.science/pith/OYPSRYLX3J37SJFCVICYWI6U3E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OYPSRYLX3J37SJFCVICYWI6U3E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:OYPSRYLX3J37SJFCVICYWI6U3E","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":"caa8fe86766a87fb5c3bd512ffcb04f9f4b18a37122563c4f4a6c29e9c199032","cross_cats_sorted":["cs.DC","cs.SE","physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-06-09T18:32:42Z","title_canon_sha256":"302f07a2ba27523b79d2684edb23ebc88f1067265986f1e79b97a47250eaf5d0"},"schema_version":"1.0","source":{"id":"2606.11356","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.11356","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"arxiv_version","alias_value":"2606.11356v1","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.11356","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"pith_short_12","alias_value":"OYPSRYLX3J37","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"pith_short_16","alias_value":"OYPSRYLX3J37SJFC","created_at":"2026-06-11T00:08:21Z"},{"alias_kind":"pith_short_8","alias_value":"OYPSRYLX","created_at":"2026-06-11T00:08:21Z"}],"graph_snapshots":[{"event_id":"sha256:44978ce68d3f6770cea64001d4b7e48d1d07e1f91e821f0bdcaf46741b61af34","target":"graph","created_at":"2026-06-11T00:08:21Z","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/2606.11356/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Large language models (LLMs) can translate and modify source code, and have been shown to do so for codes of different complexity. Whether they can port a complete, production geophysical model to a different language without degrading its physics has not been established. We demonstrate that LLM-assisted code translation can preserve the physics of a complete production ocean model while moving it into a modern performance-portable form. We report our experience using an agentic LLM coding assistant, directed by domain experts, to port the FESOM2 unstructured mesh ocean--sea-ice model (about ","authors_text":"Dmitry Sidorenko, Nikolay V. Koldunov, Sebastian Beyer, Sergey Danilov, Suvarchal K. Cheedela, Thomas Jung","cross_cats":["cs.DC","cs.SE","physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-06-09T18:32:42Z","title":"An Ocean Model Ported by a Large Language Model: Experience and Lessons from FESOM2 (Fortran to C to C++/Kokkos)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.11356","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":"sha256:42562e02181c3d9cf64cb7ca90e828c3c93c2a8dbccf3dfb7d929c3ca0c7a4d7","target":"record","created_at":"2026-06-11T00:08:21Z","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":"caa8fe86766a87fb5c3bd512ffcb04f9f4b18a37122563c4f4a6c29e9c199032","cross_cats_sorted":["cs.DC","cs.SE","physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-06-09T18:32:42Z","title_canon_sha256":"302f07a2ba27523b79d2684edb23ebc88f1067265986f1e79b97a47250eaf5d0"},"schema_version":"1.0","source":{"id":"2606.11356","kind":"arxiv","version":1}},"canonical_sha256":"761f28e177da77f924a2aa058b23d4d91be0f72273bdbab27ded86ce0746f63f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"761f28e177da77f924a2aa058b23d4d91be0f72273bdbab27ded86ce0746f63f","first_computed_at":"2026-06-11T00:08:21.400741Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-11T00:08:21.400741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J36WR5Bu7O55gvjmjVwqTfGAom6rQ+1Zz1RWzi6p9/CgvqXYg2GATqVXeuoFoNODltG1WdediEaFfYuz2JxaBQ==","signature_status":"signed_v1","signed_at":"2026-06-11T00:08:21.401576Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.11356","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:42562e02181c3d9cf64cb7ca90e828c3c93c2a8dbccf3dfb7d929c3ca0c7a4d7","sha256:44978ce68d3f6770cea64001d4b7e48d1d07e1f91e821f0bdcaf46741b61af34"],"state_sha256":"adca8ef0ef8cdf6ac1c59f1405e9fed066c0bcb5856e92cd096acee873528cd7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1gJAKcZcV1Ia6Pl+TLdKwaIg9B8WiV5Zs8FED3sQ704NYb2jsBdaHXKDqgWI++IgQ9D7yqeZt9csPFPGCwvQBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T10:58:30.959695Z","bundle_sha256":"847e66114b9233748194a3fc8f3e6abbc182c50d4df1135d81ddbd2e2d04445a"}}