{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:DC3S7LKI23VONWNLKSUWB6MPYS","short_pith_number":"pith:DC3S7LKI","canonical_record":{"source":{"id":"2505.08123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-12T23:32:21Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"ac044dc87b47e4796271c089a8976157b972a432da9e0c66159e55b42bc68130","abstract_canon_sha256":"133980f693d3dde87ca0efd1392024b2daef85593caa157a774d72442a602211"},"schema_version":"1.0"},"canonical_sha256":"18b72fad48d6eae6d9ab54a960f98fc4921dcd29d85713f319ead56a46ef133d","source":{"kind":"arxiv","id":"2505.08123","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.08123","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"arxiv_version","alias_value":"2505.08123v1","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.08123","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"pith_short_12","alias_value":"DC3S7LKI23VO","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"pith_short_16","alias_value":"DC3S7LKI23VONWNL","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"pith_short_8","alias_value":"DC3S7LKI","created_at":"2026-07-05T11:02:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:DC3S7LKI23VONWNLKSUWB6MPYS","target":"record","payload":{"canonical_record":{"source":{"id":"2505.08123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-12T23:32:21Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"ac044dc87b47e4796271c089a8976157b972a432da9e0c66159e55b42bc68130","abstract_canon_sha256":"133980f693d3dde87ca0efd1392024b2daef85593caa157a774d72442a602211"},"schema_version":"1.0"},"canonical_sha256":"18b72fad48d6eae6d9ab54a960f98fc4921dcd29d85713f319ead56a46ef133d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:02:03.079348Z","signature_b64":"m+G11ssfto3c6lOM2a4FOuc3MzrtQkZRj+nAXpj45/wMrE9J+hfVuomzcumnBbTAewCpID7cEkJLtpll8Z8yCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18b72fad48d6eae6d9ab54a960f98fc4921dcd29d85713f319ead56a46ef133d","last_reissued_at":"2026-07-05T11:02:03.078861Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:02:03.078861Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.08123","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":"2026-07-05T11:02:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nL7cPAlf1UdDKonO0OeXMsFlSS5vMKSGhGflu5lUGxJG9OYrXzpCHw+HFFc/1X+Ju8K8pVK0ZSMqn/ogChBECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:45:37.807305Z"},"content_sha256":"2d60089c14cb2a86ab0471a83d41ca50478e250b23b41d438c1753330d551e6c","schema_version":"1.0","event_id":"sha256:2d60089c14cb2a86ab0471a83d41ca50478e250b23b41d438c1753330d551e6c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:DC3S7LKI23VONWNLKSUWB6MPYS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"JSover: Joint Spectrum Estimation and Multi-Material Decomposition from Single-Energy CT Projections","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Hongjiang Wei, Jingyi Yu, Qing Wu, S. Kevin Zhou, Yuyao Zhang","submitted_at":"2025-05-12T23:32:21Z","abstract_excerpt":"Multi-material decomposition (MMD) enables quantitative reconstruction of tissue compositions in the human body, supporting a wide range of clinical applications. However, traditional MMD typically requires spectral CT scanners and pre-measured X-ray energy spectra, significantly limiting clinical applicability. To this end, various methods have been developed to perform MMD using conventional (i.e., single-energy, SE) CT systems, commonly referred to as SEMMD. Despite promising progress, most SEMMD methods follow a two-step image decomposition pipeline, which first reconstructs monochromatic "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.08123","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/2505.08123/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":"2026-07-05T11:02:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P7SFxpnPhTw/S5xqtwYSMDqP1Ayfq/HOMizAf0iwgFeIgzLh9iN3KbG/L83/KvLXqnls60C4Y5aM5kei3/HtDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T22:45:37.808195Z"},"content_sha256":"1c9d36115a65ed2dc6fb7d4fe1a31f6d12df502a21ccfd92dd05c36e38114847","schema_version":"1.0","event_id":"sha256:1c9d36115a65ed2dc6fb7d4fe1a31f6d12df502a21ccfd92dd05c36e38114847"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DC3S7LKI23VONWNLKSUWB6MPYS/bundle.json","state_url":"https://pith.science/pith/DC3S7LKI23VONWNLKSUWB6MPYS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DC3S7LKI23VONWNLKSUWB6MPYS/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":"2026-08-17T22:45:37Z","links":{"resolver":"https://pith.science/pith/DC3S7LKI23VONWNLKSUWB6MPYS","bundle":"https://pith.science/pith/DC3S7LKI23VONWNLKSUWB6MPYS/bundle.json","state":"https://pith.science/pith/DC3S7LKI23VONWNLKSUWB6MPYS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DC3S7LKI23VONWNLKSUWB6MPYS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:DC3S7LKI23VONWNLKSUWB6MPYS","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":"133980f693d3dde87ca0efd1392024b2daef85593caa157a774d72442a602211","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-12T23:32:21Z","title_canon_sha256":"ac044dc87b47e4796271c089a8976157b972a432da9e0c66159e55b42bc68130"},"schema_version":"1.0","source":{"id":"2505.08123","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.08123","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"arxiv_version","alias_value":"2505.08123v1","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.08123","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"pith_short_12","alias_value":"DC3S7LKI23VO","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"pith_short_16","alias_value":"DC3S7LKI23VONWNL","created_at":"2026-07-05T11:02:03Z"},{"alias_kind":"pith_short_8","alias_value":"DC3S7LKI","created_at":"2026-07-05T11:02:03Z"}],"graph_snapshots":[{"event_id":"sha256:1c9d36115a65ed2dc6fb7d4fe1a31f6d12df502a21ccfd92dd05c36e38114847","target":"graph","created_at":"2026-07-05T11:02:03Z","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/2505.08123/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Multi-material decomposition (MMD) enables quantitative reconstruction of tissue compositions in the human body, supporting a wide range of clinical applications. However, traditional MMD typically requires spectral CT scanners and pre-measured X-ray energy spectra, significantly limiting clinical applicability. To this end, various methods have been developed to perform MMD using conventional (i.e., single-energy, SE) CT systems, commonly referred to as SEMMD. Despite promising progress, most SEMMD methods follow a two-step image decomposition pipeline, which first reconstructs monochromatic ","authors_text":"Hongjiang Wei, Jingyi Yu, Qing Wu, S. Kevin Zhou, Yuyao Zhang","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-12T23:32:21Z","title":"JSover: Joint Spectrum Estimation and Multi-Material Decomposition from Single-Energy CT Projections"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.08123","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":"sha256:2d60089c14cb2a86ab0471a83d41ca50478e250b23b41d438c1753330d551e6c","target":"record","created_at":"2026-07-05T11:02:03Z","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":"133980f693d3dde87ca0efd1392024b2daef85593caa157a774d72442a602211","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-05-12T23:32:21Z","title_canon_sha256":"ac044dc87b47e4796271c089a8976157b972a432da9e0c66159e55b42bc68130"},"schema_version":"1.0","source":{"id":"2505.08123","kind":"arxiv","version":1}},"canonical_sha256":"18b72fad48d6eae6d9ab54a960f98fc4921dcd29d85713f319ead56a46ef133d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18b72fad48d6eae6d9ab54a960f98fc4921dcd29d85713f319ead56a46ef133d","first_computed_at":"2026-07-05T11:02:03.078861Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:02:03.078861Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m+G11ssfto3c6lOM2a4FOuc3MzrtQkZRj+nAXpj45/wMrE9J+hfVuomzcumnBbTAewCpID7cEkJLtpll8Z8yCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:02:03.079348Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.08123","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d60089c14cb2a86ab0471a83d41ca50478e250b23b41d438c1753330d551e6c","sha256:1c9d36115a65ed2dc6fb7d4fe1a31f6d12df502a21ccfd92dd05c36e38114847"],"state_sha256":"27524253ad0b07543d20531ded2a0e1dcfd65e8e31c1f568f48fe38eb9201a54"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ITFCO9/KxVcAgegr9rl6kIJgu2kwBSeQImbNrt9B3xyEjkYDcX65fVNJp+o3W3t50hV3WRBOJwZupw3bEUPKBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T22:45:37.813832Z","bundle_sha256":"f2686b73f67755c2b4d2faf253ece0fe1a2d398f8e25a571e6b1f66a29ec1bf0"}}