{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:YTKCNVITZDTGZAENTW4N3OLAK3","short_pith_number":"pith:YTKCNVIT","canonical_record":{"source":{"id":"2103.11675","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2021-03-22T09:10:02Z","cross_cats_sorted":[],"title_canon_sha256":"cca3a23889eb4cb92dbf5728e5b11934c50a0710fa874d591811e83f6b385981","abstract_canon_sha256":"6ba0d5daa64f8a7c52b4d68f979be3b6fa7314e19755a5be398f78aa2975e6ea"},"schema_version":"1.0"},"canonical_sha256":"c4d426d513c8e66c808d9db8ddb96056edb6e12107011dd841670974eb5d43c0","source":{"kind":"arxiv","id":"2103.11675","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.11675","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"arxiv_version","alias_value":"2103.11675v3","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.11675","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"pith_short_12","alias_value":"YTKCNVITZDTG","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"pith_short_16","alias_value":"YTKCNVITZDTGZAEN","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"pith_short_8","alias_value":"YTKCNVIT","created_at":"2026-07-05T07:02:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:YTKCNVITZDTGZAENTW4N3OLAK3","target":"record","payload":{"canonical_record":{"source":{"id":"2103.11675","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2021-03-22T09:10:02Z","cross_cats_sorted":[],"title_canon_sha256":"cca3a23889eb4cb92dbf5728e5b11934c50a0710fa874d591811e83f6b385981","abstract_canon_sha256":"6ba0d5daa64f8a7c52b4d68f979be3b6fa7314e19755a5be398f78aa2975e6ea"},"schema_version":"1.0"},"canonical_sha256":"c4d426d513c8e66c808d9db8ddb96056edb6e12107011dd841670974eb5d43c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:02:23.933775Z","signature_b64":"4mZGM2z1yVIUfepOjAN3y9vw51wYahoxMIJbn1SmeokIYxbZLtn5szPGAqscfa2cw20c0hw+86JatgtU7Js9Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4d426d513c8e66c808d9db8ddb96056edb6e12107011dd841670974eb5d43c0","last_reissued_at":"2026-07-05T07:02:23.933232Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:02:23.933232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.11675","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:02:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"41DUhVQPoy5iRJaCcZxvWt1cFBV6l4RdR5shn8BD2BfOUA3ZYjcmw8yzdfIzTW2l6aJYBdOG6kJY/Nn1ocBuBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:08:42.677026Z"},"content_sha256":"bef4189ef6f1d8041b01069bad09021fa3b8abf8cdabd832a41b4d076c102f83","schema_version":"1.0","event_id":"sha256:bef4189ef6f1d8041b01069bad09021fa3b8abf8cdabd832a41b4d076c102f83"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:YTKCNVITZDTGZAENTW4N3OLAK3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"XCloud-VIP: Virtual Peak Enables Highly Accelerated NMR Spectroscopy and Faithful Quantitative Measures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.med-ph","authors_text":"Amir Goldbourt, Di Guo, Donghai Lin, Jian Wang, Liubin Feng, Meijin Lin, Min Xiao, Qing Hong, Tianyu Qiu, Xiaobo Qu, Yi Guo, Yinran Chen, Yirong Zhou, Yuqing Huang, Zhangren Tu, Zi Wang","submitted_at":"2021-03-22T09:10:02Z","abstract_excerpt":"Nuclear Magnetic Resonance (NMR) spectroscopy is an important bio-engineering tool to determine the metabolic concentrations, molecule structures and so on. The data acquisition time, however, is very long in multi-dimensional NMR. To accelerate data acquisition, non-uniformly sampling is an effective way but may encounter severe spectral distortions and unfaithful quantitative measures when the acceleration factor is high. By modelling the acquired signal as the superimposed exponentials, we proposed a virtual peak (VIP) approach to selfadapt the prior spectral information, such as the resona"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.11675","kind":"arxiv","version":3},"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/2103.11675/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":"2026-07-05T07:02:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mHt7abAGYCNO3MsUDZYqMmg1x7IDljvxdro7W7weZqts1UPTGuNT2Sqccx4eGOlWYfmM4AclyKrznnbnoIRQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:08:42.677548Z"},"content_sha256":"28e06bc6d5a639ad18339bebe9ce326ec250612c577315935cc4b9c8b0b465c6","schema_version":"1.0","event_id":"sha256:28e06bc6d5a639ad18339bebe9ce326ec250612c577315935cc4b9c8b0b465c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YTKCNVITZDTGZAENTW4N3OLAK3/bundle.json","state_url":"https://pith.science/pith/YTKCNVITZDTGZAENTW4N3OLAK3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YTKCNVITZDTGZAENTW4N3OLAK3/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":"2026-08-06T15:08:42Z","links":{"resolver":"https://pith.science/pith/YTKCNVITZDTGZAENTW4N3OLAK3","bundle":"https://pith.science/pith/YTKCNVITZDTGZAENTW4N3OLAK3/bundle.json","state":"https://pith.science/pith/YTKCNVITZDTGZAENTW4N3OLAK3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YTKCNVITZDTGZAENTW4N3OLAK3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:YTKCNVITZDTGZAENTW4N3OLAK3","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":"6ba0d5daa64f8a7c52b4d68f979be3b6fa7314e19755a5be398f78aa2975e6ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2021-03-22T09:10:02Z","title_canon_sha256":"cca3a23889eb4cb92dbf5728e5b11934c50a0710fa874d591811e83f6b385981"},"schema_version":"1.0","source":{"id":"2103.11675","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.11675","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"arxiv_version","alias_value":"2103.11675v3","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.11675","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"pith_short_12","alias_value":"YTKCNVITZDTG","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"pith_short_16","alias_value":"YTKCNVITZDTGZAEN","created_at":"2026-07-05T07:02:23Z"},{"alias_kind":"pith_short_8","alias_value":"YTKCNVIT","created_at":"2026-07-05T07:02:23Z"}],"graph_snapshots":[{"event_id":"sha256:28e06bc6d5a639ad18339bebe9ce326ec250612c577315935cc4b9c8b0b465c6","target":"graph","created_at":"2026-07-05T07:02:23Z","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/2103.11675/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nuclear Magnetic Resonance (NMR) spectroscopy is an important bio-engineering tool to determine the metabolic concentrations, molecule structures and so on. The data acquisition time, however, is very long in multi-dimensional NMR. To accelerate data acquisition, non-uniformly sampling is an effective way but may encounter severe spectral distortions and unfaithful quantitative measures when the acceleration factor is high. By modelling the acquired signal as the superimposed exponentials, we proposed a virtual peak (VIP) approach to selfadapt the prior spectral information, such as the resona","authors_text":"Amir Goldbourt, Di Guo, Donghai Lin, Jian Wang, Liubin Feng, Meijin Lin, Min Xiao, Qing Hong, Tianyu Qiu, Xiaobo Qu, Yi Guo, Yinran Chen, Yirong Zhou, Yuqing Huang, Zhangren Tu, Zi Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2021-03-22T09:10:02Z","title":"XCloud-VIP: Virtual Peak Enables Highly Accelerated NMR Spectroscopy and Faithful Quantitative Measures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.11675","kind":"arxiv","version":3},"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:bef4189ef6f1d8041b01069bad09021fa3b8abf8cdabd832a41b4d076c102f83","target":"record","created_at":"2026-07-05T07:02:23Z","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":"6ba0d5daa64f8a7c52b4d68f979be3b6fa7314e19755a5be398f78aa2975e6ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.med-ph","submitted_at":"2021-03-22T09:10:02Z","title_canon_sha256":"cca3a23889eb4cb92dbf5728e5b11934c50a0710fa874d591811e83f6b385981"},"schema_version":"1.0","source":{"id":"2103.11675","kind":"arxiv","version":3}},"canonical_sha256":"c4d426d513c8e66c808d9db8ddb96056edb6e12107011dd841670974eb5d43c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4d426d513c8e66c808d9db8ddb96056edb6e12107011dd841670974eb5d43c0","first_computed_at":"2026-07-05T07:02:23.933232Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:02:23.933232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4mZGM2z1yVIUfepOjAN3y9vw51wYahoxMIJbn1SmeokIYxbZLtn5szPGAqscfa2cw20c0hw+86JatgtU7Js9Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T07:02:23.933775Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.11675","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bef4189ef6f1d8041b01069bad09021fa3b8abf8cdabd832a41b4d076c102f83","sha256:28e06bc6d5a639ad18339bebe9ce326ec250612c577315935cc4b9c8b0b465c6"],"state_sha256":"2175182cf265d5852c22c356f12f5f78fde6b428f413a2997868c70db4ef965a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nJbBLu+AnWvvx9Pu954Po2JdLkST5RlOwYMOAbI85HFUv8bTEMTb3hwv0Eua3YP2rUJrBFnvnRzRW+CVr3caCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T15:08:42.681124Z","bundle_sha256":"1380ad6177569e367056c5640c8251f7298afb8fb0a350bf312806f5f3bddac7"}}