{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QPJ2C2EJ6HZRWESWKKHYKW6WIE","short_pith_number":"pith:QPJ2C2EJ","canonical_record":{"source":{"id":"2607.15045","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2026-07-16T14:25:56Z","cross_cats_sorted":[],"title_canon_sha256":"e599a3228a103e128be534f26ce2a6f70a90b6592e14dd212f210df4ca661b51","abstract_canon_sha256":"36789672b560ab509042dd161bd2cd4d9cbd4099ec478a0fbceb7bae5b31592c"},"schema_version":"1.0"},"canonical_sha256":"83d3a16889f1f31b1256528f855bd64101bb9e960de1c5904000310fc08c7288","source":{"kind":"arxiv","id":"2607.15045","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.15045","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"arxiv_version","alias_value":"2607.15045v1","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.15045","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"pith_short_12","alias_value":"QPJ2C2EJ6HZR","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"pith_short_16","alias_value":"QPJ2C2EJ6HZRWESW","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"pith_short_8","alias_value":"QPJ2C2EJ","created_at":"2026-07-17T01:22:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QPJ2C2EJ6HZRWESWKKHYKW6WIE","target":"record","payload":{"canonical_record":{"source":{"id":"2607.15045","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2026-07-16T14:25:56Z","cross_cats_sorted":[],"title_canon_sha256":"e599a3228a103e128be534f26ce2a6f70a90b6592e14dd212f210df4ca661b51","abstract_canon_sha256":"36789672b560ab509042dd161bd2cd4d9cbd4099ec478a0fbceb7bae5b31592c"},"schema_version":"1.0"},"canonical_sha256":"83d3a16889f1f31b1256528f855bd64101bb9e960de1c5904000310fc08c7288","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-17T01:22:06.561077Z","signature_b64":"I+7x+dyY+WUCa1fsJbIK36Hv7FMngyMTVNWh8oh363jLZj9UrHsN/XdPWmNkA+SZWKjceNs/InbxEUVWTSSiDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83d3a16889f1f31b1256528f855bd64101bb9e960de1c5904000310fc08c7288","last_reissued_at":"2026-07-17T01:22:06.560204Z","signature_status":"signed_v1","first_computed_at":"2026-07-17T01:22:06.560204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.15045","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":"2026-07-17T01:22:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NxiOFwrYPrJMtDPqFzv00Jdi5df1uI1mnyidx3egonvnnXt93tOzTaxuZlZ3oSGEpL9HAptXM/bLVCAQhXKHAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:09:58.119591Z"},"content_sha256":"64b9bac6bfd1955dec9e012af0255bebc33ebc69c1feff67037f2e9c03d4fecd","schema_version":"1.0","event_id":"sha256:64b9bac6bfd1955dec9e012af0255bebc33ebc69c1feff67037f2e9c03d4fecd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QPJ2C2EJ6HZRWESWKKHYKW6WIE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deep Scene-Driven Ordering of Hadamard Basis for Single-Pixel Spectral Imaging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.IV","authors_text":"Brayan Monroy, Hans Garcia, Henry Arguello, Jorge Bacca","submitted_at":"2026-07-16T14:25:56Z","abstract_excerpt":"Spectral images are highly valuable for various applications, including environmental monitoring and precision agriculture. However, the high cost of specialized sensors limits the wide use of this technology in numerous applications. Current alternatives to acquire high spatial-spectral resolution spectral images, like Single-Pixel Imaging (SPI) enhanced with Deep Optical Coding Design (DOCD), have limitations due to their non-feedback optical designs, leading to limited image quality, with optimal performance achieved only for the specific scenes used during training. This work reformulates "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.15045","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/2607.15045/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":"2026-07-17T01:22:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lkS8yHobICzNdqUiWNLIGkwnVrs+0dkElgVD83Kp5tRhWNKm+x9F04E6rEXh21KkeludfVBB+ppatqf/w//+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:09:58.120091Z"},"content_sha256":"0ce2cc553d400a58105a20086279e0c664179d515051bd443fd205915dbcb09e","schema_version":"1.0","event_id":"sha256:0ce2cc553d400a58105a20086279e0c664179d515051bd443fd205915dbcb09e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QPJ2C2EJ6HZRWESWKKHYKW6WIE/bundle.json","state_url":"https://pith.science/pith/QPJ2C2EJ6HZRWESWKKHYKW6WIE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QPJ2C2EJ6HZRWESWKKHYKW6WIE/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":"2026-08-06T15:09:58Z","links":{"resolver":"https://pith.science/pith/QPJ2C2EJ6HZRWESWKKHYKW6WIE","bundle":"https://pith.science/pith/QPJ2C2EJ6HZRWESWKKHYKW6WIE/bundle.json","state":"https://pith.science/pith/QPJ2C2EJ6HZRWESWKKHYKW6WIE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QPJ2C2EJ6HZRWESWKKHYKW6WIE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QPJ2C2EJ6HZRWESWKKHYKW6WIE","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":"36789672b560ab509042dd161bd2cd4d9cbd4099ec478a0fbceb7bae5b31592c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2026-07-16T14:25:56Z","title_canon_sha256":"e599a3228a103e128be534f26ce2a6f70a90b6592e14dd212f210df4ca661b51"},"schema_version":"1.0","source":{"id":"2607.15045","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.15045","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"arxiv_version","alias_value":"2607.15045v1","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.15045","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"pith_short_12","alias_value":"QPJ2C2EJ6HZR","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"pith_short_16","alias_value":"QPJ2C2EJ6HZRWESW","created_at":"2026-07-17T01:22:06Z"},{"alias_kind":"pith_short_8","alias_value":"QPJ2C2EJ","created_at":"2026-07-17T01:22:06Z"}],"graph_snapshots":[{"event_id":"sha256:0ce2cc553d400a58105a20086279e0c664179d515051bd443fd205915dbcb09e","target":"graph","created_at":"2026-07-17T01:22:06Z","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/2607.15045/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Spectral images are highly valuable for various applications, including environmental monitoring and precision agriculture. However, the high cost of specialized sensors limits the wide use of this technology in numerous applications. Current alternatives to acquire high spatial-spectral resolution spectral images, like Single-Pixel Imaging (SPI) enhanced with Deep Optical Coding Design (DOCD), have limitations due to their non-feedback optical designs, leading to limited image quality, with optimal performance achieved only for the specific scenes used during training. This work reformulates ","authors_text":"Brayan Monroy, Hans Garcia, Henry Arguello, Jorge Bacca","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2026-07-16T14:25:56Z","title":"Deep Scene-Driven Ordering of Hadamard Basis for Single-Pixel Spectral Imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.15045","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":"sha256:64b9bac6bfd1955dec9e012af0255bebc33ebc69c1feff67037f2e9c03d4fecd","target":"record","created_at":"2026-07-17T01:22:06Z","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":"36789672b560ab509042dd161bd2cd4d9cbd4099ec478a0fbceb7bae5b31592c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2026-07-16T14:25:56Z","title_canon_sha256":"e599a3228a103e128be534f26ce2a6f70a90b6592e14dd212f210df4ca661b51"},"schema_version":"1.0","source":{"id":"2607.15045","kind":"arxiv","version":1}},"canonical_sha256":"83d3a16889f1f31b1256528f855bd64101bb9e960de1c5904000310fc08c7288","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83d3a16889f1f31b1256528f855bd64101bb9e960de1c5904000310fc08c7288","first_computed_at":"2026-07-17T01:22:06.560204Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-17T01:22:06.560204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I+7x+dyY+WUCa1fsJbIK36Hv7FMngyMTVNWh8oh363jLZj9UrHsN/XdPWmNkA+SZWKjceNs/InbxEUVWTSSiDQ==","signature_status":"signed_v1","signed_at":"2026-07-17T01:22:06.561077Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.15045","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:64b9bac6bfd1955dec9e012af0255bebc33ebc69c1feff67037f2e9c03d4fecd","sha256:0ce2cc553d400a58105a20086279e0c664179d515051bd443fd205915dbcb09e"],"state_sha256":"07e31b41a7914c7758b6586f1ed1946ff05eb128f5d1ac0a04352016434bf20b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IKuTu1N8mF0iGoOVWclX9I1DYVZuyAtZAnuo1O03evcfBVRK8aEqspRRY4E0BQGJRD3OlXnnMrAijLtFwEMiCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T15:09:58.124129Z","bundle_sha256":"81329ec4b4dfbfba59726532ac0d5032eb09af440c9c62c39ed6d639ff3d53d7"}}