{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:YNDQSKMMU64VAOK6MT423XFS6N","short_pith_number":"pith:YNDQSKMM","canonical_record":{"source":{"id":"2605.19730","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-19T12:05:11Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"33324136b48b3012153f1f723b2dd04306a08a5b076dabafbb2ead7ff61c2f2d","abstract_canon_sha256":"868567b79a4fa3d8b26dae42ea42f645486710f211b04e63d68a542aaf4693d0"},"schema_version":"1.0"},"canonical_sha256":"c34709298ca7b950395e64f9addcb2f343cddacd529de29edcb269cce74a6b4b","source":{"kind":"arxiv","id":"2605.19730","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.19730","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"arxiv_version","alias_value":"2605.19730v1","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.19730","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"pith_short_12","alias_value":"YNDQSKMMU64V","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"pith_short_16","alias_value":"YNDQSKMMU64VAOK6","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"pith_short_8","alias_value":"YNDQSKMM","created_at":"2026-05-20T01:06:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:YNDQSKMMU64VAOK6MT423XFS6N","target":"record","payload":{"canonical_record":{"source":{"id":"2605.19730","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-19T12:05:11Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"33324136b48b3012153f1f723b2dd04306a08a5b076dabafbb2ead7ff61c2f2d","abstract_canon_sha256":"868567b79a4fa3d8b26dae42ea42f645486710f211b04e63d68a542aaf4693d0"},"schema_version":"1.0"},"canonical_sha256":"c34709298ca7b950395e64f9addcb2f343cddacd529de29edcb269cce74a6b4b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T01:06:11.364017Z","signature_b64":"LmOceXpcXKs81MMVkNh1Ql4JIfFkOVY6YltC6Id2R3db+HrHlzK9r8RYIUS+vOxh9YWToGEj0Jc5UUPdxE6OAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c34709298ca7b950395e64f9addcb2f343cddacd529de29edcb269cce74a6b4b","last_reissued_at":"2026-05-20T01:06:11.363458Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T01:06:11.363458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.19730","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":"2026-05-20T01:06:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V6FKn2yiUdEPZW6+Zv2owoMLl7Y20zBH3iVxShlYf0F1ECdJgEi3627hbG74XPfNMmmiAm4kNJwDwGCnhxy/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:37:18.976416Z"},"content_sha256":"2d0abcf00808052c1df7eec31d17c00f801bb97a9bda061cdefa27e419bc8b4a","schema_version":"1.0","event_id":"sha256:2d0abcf00808052c1df7eec31d17c00f801bb97a9bda061cdefa27e419bc8b4a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:YNDQSKMMU64VAOK6MT423XFS6N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Matrix structure and convergence behavior of the matched eigenfunction method for computing heave wave forces on generalized concentric bodies","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"physics.ao-ph","authors_text":"Collin Treacy, En Lo, Kapil Khanal, Maha Haji, Rebecca McCabe, Yinghui Bimali","submitted_at":"2026-05-19T12:05:11Z","abstract_excerpt":"Structural survival of offshore structures is crucial for the growing marine economy. Calculating the added mass, radiation damping, and excitation coefficients to quantify wave loads with the traditional boundary element method (BEM) presents a computational bottleneck. The matched eigenfunction expansion method (MEEM), a long-known but rarely-used alternative, offers computational benefits due to its semi-analytical nature. However, previous work fails to directly compare its accuracy and computational performance with BEM, leaving the extent of its utility unknown. Furthermore, the geometry"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.19730","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/2605.19730/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":"2026-05-20T01:06:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hvr1p9lgzKS6oVkUhIzYLjFt9T7W3n4Rr+HXF2PMFxKq3vLgiEcuCcn3s7c3owdJcgKPyOw4gie4+6C36r5YDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:37:18.977142Z"},"content_sha256":"b47bd8c31b65e974b7bdba6c365b10cdabdab66860c2712eaba947395171c2ed","schema_version":"1.0","event_id":"sha256:b47bd8c31b65e974b7bdba6c365b10cdabdab66860c2712eaba947395171c2ed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YNDQSKMMU64VAOK6MT423XFS6N/bundle.json","state_url":"https://pith.science/pith/YNDQSKMMU64VAOK6MT423XFS6N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YNDQSKMMU64VAOK6MT423XFS6N/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":"2026-05-26T06:37:18Z","links":{"resolver":"https://pith.science/pith/YNDQSKMMU64VAOK6MT423XFS6N","bundle":"https://pith.science/pith/YNDQSKMMU64VAOK6MT423XFS6N/bundle.json","state":"https://pith.science/pith/YNDQSKMMU64VAOK6MT423XFS6N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YNDQSKMMU64VAOK6MT423XFS6N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:YNDQSKMMU64VAOK6MT423XFS6N","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":"868567b79a4fa3d8b26dae42ea42f645486710f211b04e63d68a542aaf4693d0","cross_cats_sorted":["physics.flu-dyn"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-19T12:05:11Z","title_canon_sha256":"33324136b48b3012153f1f723b2dd04306a08a5b076dabafbb2ead7ff61c2f2d"},"schema_version":"1.0","source":{"id":"2605.19730","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.19730","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"arxiv_version","alias_value":"2605.19730v1","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.19730","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"pith_short_12","alias_value":"YNDQSKMMU64V","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"pith_short_16","alias_value":"YNDQSKMMU64VAOK6","created_at":"2026-05-20T01:06:11Z"},{"alias_kind":"pith_short_8","alias_value":"YNDQSKMM","created_at":"2026-05-20T01:06:11Z"}],"graph_snapshots":[{"event_id":"sha256:b47bd8c31b65e974b7bdba6c365b10cdabdab66860c2712eaba947395171c2ed","target":"graph","created_at":"2026-05-20T01:06:11Z","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/2605.19730/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Structural survival of offshore structures is crucial for the growing marine economy. Calculating the added mass, radiation damping, and excitation coefficients to quantify wave loads with the traditional boundary element method (BEM) presents a computational bottleneck. The matched eigenfunction expansion method (MEEM), a long-known but rarely-used alternative, offers computational benefits due to its semi-analytical nature. However, previous work fails to directly compare its accuracy and computational performance with BEM, leaving the extent of its utility unknown. Furthermore, the geometry","authors_text":"Collin Treacy, En Lo, Kapil Khanal, Maha Haji, Rebecca McCabe, Yinghui Bimali","cross_cats":["physics.flu-dyn"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-19T12:05:11Z","title":"Matrix structure and convergence behavior of the matched eigenfunction method for computing heave wave forces on generalized concentric bodies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.19730","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":"sha256:2d0abcf00808052c1df7eec31d17c00f801bb97a9bda061cdefa27e419bc8b4a","target":"record","created_at":"2026-05-20T01:06:11Z","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":"868567b79a4fa3d8b26dae42ea42f645486710f211b04e63d68a542aaf4693d0","cross_cats_sorted":["physics.flu-dyn"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-05-19T12:05:11Z","title_canon_sha256":"33324136b48b3012153f1f723b2dd04306a08a5b076dabafbb2ead7ff61c2f2d"},"schema_version":"1.0","source":{"id":"2605.19730","kind":"arxiv","version":1}},"canonical_sha256":"c34709298ca7b950395e64f9addcb2f343cddacd529de29edcb269cce74a6b4b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c34709298ca7b950395e64f9addcb2f343cddacd529de29edcb269cce74a6b4b","first_computed_at":"2026-05-20T01:06:11.363458Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T01:06:11.363458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LmOceXpcXKs81MMVkNh1Ql4JIfFkOVY6YltC6Id2R3db+HrHlzK9r8RYIUS+vOxh9YWToGEj0Jc5UUPdxE6OAw==","signature_status":"signed_v1","signed_at":"2026-05-20T01:06:11.364017Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.19730","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d0abcf00808052c1df7eec31d17c00f801bb97a9bda061cdefa27e419bc8b4a","sha256:b47bd8c31b65e974b7bdba6c365b10cdabdab66860c2712eaba947395171c2ed"],"state_sha256":"1602be685800bab55f89cca589947360375d0451513ff6fe04ea2b0bf6a7ad47"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nSCCGCTnFF1PIi+2UCHtzlzjNsL40biPSu29hgUWr+gepBREJ8vgg4uvlT/zYtoh7i5zGvZcZAoxRuas7stBBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:37:18.981053Z","bundle_sha256":"5db1c373285d5f5dcd503a1bf5965fed70e7221072bea97fdf8f0e494b9bff75"}}