{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:4U4IDGG4E2D4FTKPVUGPH2AZOA","short_pith_number":"pith:4U4IDGG4","canonical_record":{"source":{"id":"2410.00754","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-01T14:48:48Z","cross_cats_sorted":[],"title_canon_sha256":"b21b598ed955273d412868b01f8cc70d09a8b32e2ccf524ec612711256c5bae6","abstract_canon_sha256":"f9b453fa5eb59fc39e9ecda8b811ea2856996ca1710c4392a7ec2ecf9505a5b4"},"schema_version":"1.0"},"canonical_sha256":"e5388198dc2687c2cd4fad0cf3e81970281660d689cb1c0a7d3aa72a002b8af6","source":{"kind":"arxiv","id":"2410.00754","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.00754","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"arxiv_version","alias_value":"2410.00754v1","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.00754","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"pith_short_12","alias_value":"4U4IDGG4E2D4","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"pith_short_16","alias_value":"4U4IDGG4E2D4FTKP","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"pith_short_8","alias_value":"4U4IDGG4","created_at":"2026-07-05T09:14:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:4U4IDGG4E2D4FTKPVUGPH2AZOA","target":"record","payload":{"canonical_record":{"source":{"id":"2410.00754","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-01T14:48:48Z","cross_cats_sorted":[],"title_canon_sha256":"b21b598ed955273d412868b01f8cc70d09a8b32e2ccf524ec612711256c5bae6","abstract_canon_sha256":"f9b453fa5eb59fc39e9ecda8b811ea2856996ca1710c4392a7ec2ecf9505a5b4"},"schema_version":"1.0"},"canonical_sha256":"e5388198dc2687c2cd4fad0cf3e81970281660d689cb1c0a7d3aa72a002b8af6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:14:09.822976Z","signature_b64":"cu4lPEYAMz5WbATwrxWNFfHjhwKi3XC/9QYStoFed78LqYWNShiQ1IhKK/W0R+QdKtyR6jj5zLVkx+bl8WacAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5388198dc2687c2cd4fad0cf3e81970281660d689cb1c0a7d3aa72a002b8af6","last_reissued_at":"2026-07-05T09:14:09.822560Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:14:09.822560Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2410.00754","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":"2026-07-05T09:14:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e8yzedVD7uxUBXH9PXWEKyFZWLsrGSvLpuVq3wOT1oTlzqCb4KDv1WhNxLRrFM5jInk7+YHevhWfb2cNvS2HBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-14T09:54:28.638859Z"},"content_sha256":"a9bb94270a686ed6009091676179ff141df3a2f4af2ad63c7252b7ca22955eab","schema_version":"1.0","event_id":"sha256:a9bb94270a686ed6009091676179ff141df3a2f4af2ad63c7252b7ca22955eab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:4U4IDGG4E2D4FTKPVUGPH2AZOA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Basis function compression for field probe monitoring","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Adam Kerr, Corey Baron, Eric Michael, Franciszek Hennel, Gabriel Varela-Mattatall, Klaas Pruessmann, Paul Dubovan, Ravi Menon","submitted_at":"2024-10-01T14:48:48Z","abstract_excerpt":"Purpose: Field monitoring using field probes allows for accurate measurement of magnetic field perturbations, such as from eddy currents, during MRI scanning. However, errors may result when the spatial variation of the fields is not well-described by the conventionally used spherical harmonics model that has the maximum order constrained by the number of probes. The objective of this work was to develop and validate a field monitoring approach that compresses higher order spherical harmonic basis functions into a smaller set of new basis functions that can be computed from fewer probes. Metho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.00754","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/2410.00754/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":"2026-07-05T09:14:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"943plwStK7smKUTWHyd/r+BVe2llTQyfXZJ3xyuvbu9W3/qPydP7N1/ro550jMvjuA/rZPFmfWy2eLp0tyB0Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-14T09:54:28.639245Z"},"content_sha256":"4a454d66474b697081989ded963a4f794f29aa8dbdf9e4e7c8fb0a5afdaaf2c5","schema_version":"1.0","event_id":"sha256:4a454d66474b697081989ded963a4f794f29aa8dbdf9e4e7c8fb0a5afdaaf2c5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4U4IDGG4E2D4FTKPVUGPH2AZOA/bundle.json","state_url":"https://pith.science/pith/4U4IDGG4E2D4FTKPVUGPH2AZOA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4U4IDGG4E2D4FTKPVUGPH2AZOA/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":"2026-07-14T09:54:28Z","links":{"resolver":"https://pith.science/pith/4U4IDGG4E2D4FTKPVUGPH2AZOA","bundle":"https://pith.science/pith/4U4IDGG4E2D4FTKPVUGPH2AZOA/bundle.json","state":"https://pith.science/pith/4U4IDGG4E2D4FTKPVUGPH2AZOA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4U4IDGG4E2D4FTKPVUGPH2AZOA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:4U4IDGG4E2D4FTKPVUGPH2AZOA","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":"f9b453fa5eb59fc39e9ecda8b811ea2856996ca1710c4392a7ec2ecf9505a5b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-01T14:48:48Z","title_canon_sha256":"b21b598ed955273d412868b01f8cc70d09a8b32e2ccf524ec612711256c5bae6"},"schema_version":"1.0","source":{"id":"2410.00754","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2410.00754","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"arxiv_version","alias_value":"2410.00754v1","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2410.00754","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"pith_short_12","alias_value":"4U4IDGG4E2D4","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"pith_short_16","alias_value":"4U4IDGG4E2D4FTKP","created_at":"2026-07-05T09:14:09Z"},{"alias_kind":"pith_short_8","alias_value":"4U4IDGG4","created_at":"2026-07-05T09:14:09Z"}],"graph_snapshots":[{"event_id":"sha256:4a454d66474b697081989ded963a4f794f29aa8dbdf9e4e7c8fb0a5afdaaf2c5","target":"graph","created_at":"2026-07-05T09:14:09Z","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/2410.00754/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Purpose: Field monitoring using field probes allows for accurate measurement of magnetic field perturbations, such as from eddy currents, during MRI scanning. However, errors may result when the spatial variation of the fields is not well-described by the conventionally used spherical harmonics model that has the maximum order constrained by the number of probes. The objective of this work was to develop and validate a field monitoring approach that compresses higher order spherical harmonic basis functions into a smaller set of new basis functions that can be computed from fewer probes. Metho","authors_text":"Adam Kerr, Corey Baron, Eric Michael, Franciszek Hennel, Gabriel Varela-Mattatall, Klaas Pruessmann, Paul Dubovan, Ravi Menon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-01T14:48:48Z","title":"Basis function compression for field probe monitoring"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2410.00754","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:a9bb94270a686ed6009091676179ff141df3a2f4af2ad63c7252b7ca22955eab","target":"record","created_at":"2026-07-05T09:14:09Z","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":"f9b453fa5eb59fc39e9ecda8b811ea2856996ca1710c4392a7ec2ecf9505a5b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2024-10-01T14:48:48Z","title_canon_sha256":"b21b598ed955273d412868b01f8cc70d09a8b32e2ccf524ec612711256c5bae6"},"schema_version":"1.0","source":{"id":"2410.00754","kind":"arxiv","version":1}},"canonical_sha256":"e5388198dc2687c2cd4fad0cf3e81970281660d689cb1c0a7d3aa72a002b8af6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5388198dc2687c2cd4fad0cf3e81970281660d689cb1c0a7d3aa72a002b8af6","first_computed_at":"2026-07-05T09:14:09.822560Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:14:09.822560Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cu4lPEYAMz5WbATwrxWNFfHjhwKi3XC/9QYStoFed78LqYWNShiQ1IhKK/W0R+QdKtyR6jj5zLVkx+bl8WacAw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:14:09.822976Z","signed_message":"canonical_sha256_bytes"},"source_id":"2410.00754","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9bb94270a686ed6009091676179ff141df3a2f4af2ad63c7252b7ca22955eab","sha256:4a454d66474b697081989ded963a4f794f29aa8dbdf9e4e7c8fb0a5afdaaf2c5"],"state_sha256":"bf00a538c8e776c968203bc1c5eb5d4a5b825d88d1e51a9230e11becabe426b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cDwU8ULCe1S8kGHEQqUvholOSbslkp+pB7QWwAsvfAc8nmum6/bHI6WTchgklhfbxeeYZZcGWTxIJWT4mERLDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-14T09:54:28.642312Z","bundle_sha256":"c9bd722d709eb3b6e91edadc7c6b6a8745542f39f6f585227ebb0c6344604350"}}