{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:P77UGO7ROLTH6VIGFLXZY3WHZ6","short_pith_number":"pith:P77UGO7R","canonical_record":{"source":{"id":"2412.01908","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-12-02T19:01:03Z","cross_cats_sorted":[],"title_canon_sha256":"6a3f9f9d16f8f8ec795998fb43da7554f9734e8fb1218d432d8010739c2c238c","abstract_canon_sha256":"ea0f800b5ab6b9d6be4d486332638cebf8a3564acf5dc8e78299c405ab257854"},"schema_version":"1.0"},"canonical_sha256":"7fff433bf172e67f55062aef9c6ec7cf912f5d0c2d482c9e9884706f66550f75","source":{"kind":"arxiv","id":"2412.01908","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.01908","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"arxiv_version","alias_value":"2412.01908v1","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.01908","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"pith_short_12","alias_value":"P77UGO7ROLTH","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"pith_short_16","alias_value":"P77UGO7ROLTH6VIG","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"pith_short_8","alias_value":"P77UGO7R","created_at":"2026-07-05T09:43:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:P77UGO7ROLTH6VIGFLXZY3WHZ6","target":"record","payload":{"canonical_record":{"source":{"id":"2412.01908","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-12-02T19:01:03Z","cross_cats_sorted":[],"title_canon_sha256":"6a3f9f9d16f8f8ec795998fb43da7554f9734e8fb1218d432d8010739c2c238c","abstract_canon_sha256":"ea0f800b5ab6b9d6be4d486332638cebf8a3564acf5dc8e78299c405ab257854"},"schema_version":"1.0"},"canonical_sha256":"7fff433bf172e67f55062aef9c6ec7cf912f5d0c2d482c9e9884706f66550f75","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:43:40.855002Z","signature_b64":"0vdvQmjo8sBqMN+K5juIltyIf7iqczS4r3ktlAemZ3REwxVYwTh+jqCD7L2rqsP9pLVPtCf3ITym73djXm87Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7fff433bf172e67f55062aef9c6ec7cf912f5d0c2d482c9e9884706f66550f75","last_reissued_at":"2026-07-05T09:43:40.854506Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:43:40.854506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.01908","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":"2026-07-05T09:43:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JOy2nBgfIf49Rm2wnK9knZrGQnbdiGhH5TLNVcuTouXT1uRx4m7o87iPNuczCPcOm7GfDDnT7CKw7va9BIm0CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T07:57:40.115495Z"},"content_sha256":"98fcba230f7da87ff0326d625d1dc545be92afb9c489ff2be581946e6d395f06","schema_version":"1.0","event_id":"sha256:98fcba230f7da87ff0326d625d1dc545be92afb9c489ff2be581946e6d395f06"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:P77UGO7ROLTH6VIGFLXZY3WHZ6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kernel Methods for Interferometric Imaging","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Dimitrios Psaltis, Feryal Ozel, Yassine Ben Zineb","submitted_at":"2024-12-02T19:01:03Z","abstract_excerpt":"Increasing the angular resolution of an interferometric array requires placing its elements at large separations. This often leads to sparse coverage and introduces challenges to reconstructing images from interferometric data. We introduce a new interferometric imaging algorithm, KRISP, that is based on kernel methods, is statistically robust, and is agnostic to the underlying image. The algorithm reconstructs the complete Fourier map up to the maximum observed baseline length based entirely on the data without tuning by a user or training on prior images and reproduces images with high fidel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.01908","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/2412.01908/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":"2026-07-05T09:43:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HVdONZKMY476jeS+jrvT3G80oxdwfGAKRZaR7pqoCDZu7PPvgXz6lz9lmkM+K+S5DioKn21cLcJNJg47odtuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T07:57:40.116350Z"},"content_sha256":"4eddb84b195cd658cf62247e184b79923beb4a042f2a6fbe6dff1cffebc7ed54","schema_version":"1.0","event_id":"sha256:4eddb84b195cd658cf62247e184b79923beb4a042f2a6fbe6dff1cffebc7ed54"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P77UGO7ROLTH6VIGFLXZY3WHZ6/bundle.json","state_url":"https://pith.science/pith/P77UGO7ROLTH6VIGFLXZY3WHZ6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P77UGO7ROLTH6VIGFLXZY3WHZ6/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":"2026-08-19T07:57:40Z","links":{"resolver":"https://pith.science/pith/P77UGO7ROLTH6VIGFLXZY3WHZ6","bundle":"https://pith.science/pith/P77UGO7ROLTH6VIGFLXZY3WHZ6/bundle.json","state":"https://pith.science/pith/P77UGO7ROLTH6VIGFLXZY3WHZ6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P77UGO7ROLTH6VIGFLXZY3WHZ6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:P77UGO7ROLTH6VIGFLXZY3WHZ6","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":"ea0f800b5ab6b9d6be4d486332638cebf8a3564acf5dc8e78299c405ab257854","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-12-02T19:01:03Z","title_canon_sha256":"6a3f9f9d16f8f8ec795998fb43da7554f9734e8fb1218d432d8010739c2c238c"},"schema_version":"1.0","source":{"id":"2412.01908","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.01908","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"arxiv_version","alias_value":"2412.01908v1","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.01908","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"pith_short_12","alias_value":"P77UGO7ROLTH","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"pith_short_16","alias_value":"P77UGO7ROLTH6VIG","created_at":"2026-07-05T09:43:40Z"},{"alias_kind":"pith_short_8","alias_value":"P77UGO7R","created_at":"2026-07-05T09:43:40Z"}],"graph_snapshots":[{"event_id":"sha256:4eddb84b195cd658cf62247e184b79923beb4a042f2a6fbe6dff1cffebc7ed54","target":"graph","created_at":"2026-07-05T09:43:40Z","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/2412.01908/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Increasing the angular resolution of an interferometric array requires placing its elements at large separations. This often leads to sparse coverage and introduces challenges to reconstructing images from interferometric data. We introduce a new interferometric imaging algorithm, KRISP, that is based on kernel methods, is statistically robust, and is agnostic to the underlying image. The algorithm reconstructs the complete Fourier map up to the maximum observed baseline length based entirely on the data without tuning by a user or training on prior images and reproduces images with high fidel","authors_text":"Dimitrios Psaltis, Feryal Ozel, Yassine Ben Zineb","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-12-02T19:01:03Z","title":"Kernel Methods for Interferometric Imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.01908","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":"sha256:98fcba230f7da87ff0326d625d1dc545be92afb9c489ff2be581946e6d395f06","target":"record","created_at":"2026-07-05T09:43:40Z","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":"ea0f800b5ab6b9d6be4d486332638cebf8a3564acf5dc8e78299c405ab257854","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-12-02T19:01:03Z","title_canon_sha256":"6a3f9f9d16f8f8ec795998fb43da7554f9734e8fb1218d432d8010739c2c238c"},"schema_version":"1.0","source":{"id":"2412.01908","kind":"arxiv","version":1}},"canonical_sha256":"7fff433bf172e67f55062aef9c6ec7cf912f5d0c2d482c9e9884706f66550f75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7fff433bf172e67f55062aef9c6ec7cf912f5d0c2d482c9e9884706f66550f75","first_computed_at":"2026-07-05T09:43:40.854506Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:43:40.854506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0vdvQmjo8sBqMN+K5juIltyIf7iqczS4r3ktlAemZ3REwxVYwTh+jqCD7L2rqsP9pLVPtCf3ITym73djXm87Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:43:40.855002Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.01908","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:98fcba230f7da87ff0326d625d1dc545be92afb9c489ff2be581946e6d395f06","sha256:4eddb84b195cd658cf62247e184b79923beb4a042f2a6fbe6dff1cffebc7ed54"],"state_sha256":"c3cccdd78cc8147b1de6111887062ba15b8b83e60d1ddaabfe0f676cd17d626a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qKAK//672LAflnLTN52stf5/XYhuLvN2lpgp3W+7QtrdqeytBzw1d4NAe2vW1hMtC7fF0uBmqzklfYmgwfzyBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T07:57:40.122699Z","bundle_sha256":"ca0f392c120431b80c55fde3607c74f341592bf2cc8af2c89061695e3a7071c9"}}