{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:7EPWBSPBEK5I2FPO2LM6QSRCHV","short_pith_number":"pith:7EPWBSPB","canonical_record":{"source":{"id":"2606.04094","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-02T18:00:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"bdbdb8225fbbdbe6bbda7c706550efd8186103751cc4a9dac9308e5a51146f7b","abstract_canon_sha256":"2ab45657e20ef3ac8efe8baf88c3e161e5d5b5b9e5ae9f7e4f6b0ab851f6d500"},"schema_version":"1.0"},"canonical_sha256":"f91f60c9e122ba8d15eed2d9e84a223d6db64c4e12f46d2d7bd7b259873a8ff2","source":{"kind":"arxiv","id":"2606.04094","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04094","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04094v1","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04094","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"pith_short_12","alias_value":"7EPWBSPBEK5I","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"pith_short_16","alias_value":"7EPWBSPBEK5I2FPO","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"pith_short_8","alias_value":"7EPWBSPB","created_at":"2026-06-04T00:06:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:7EPWBSPBEK5I2FPO2LM6QSRCHV","target":"record","payload":{"canonical_record":{"source":{"id":"2606.04094","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-02T18:00:06Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"bdbdb8225fbbdbe6bbda7c706550efd8186103751cc4a9dac9308e5a51146f7b","abstract_canon_sha256":"2ab45657e20ef3ac8efe8baf88c3e161e5d5b5b9e5ae9f7e4f6b0ab851f6d500"},"schema_version":"1.0"},"canonical_sha256":"f91f60c9e122ba8d15eed2d9e84a223d6db64c4e12f46d2d7bd7b259873a8ff2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T00:06:46.444026Z","signature_b64":"chHj4Dyq3uNTOCtCYDs3nwiX01nQ8iJyc3um73Szfa+YaMAj847x35Ad7RCrMLAMV4aQO4yQZWx1EneGzSW4Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f91f60c9e122ba8d15eed2d9e84a223d6db64c4e12f46d2d7bd7b259873a8ff2","last_reissued_at":"2026-06-04T00:06:46.443681Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T00:06:46.443681Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.04094","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":"2026-06-04T00:06:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YS1doXizzotLiHUPCKRzwdkyhTuIwU/WY7LGuorYeZ0c2i9eM2M8rGDUOydi6xxZtcR+vucZTUipvC76DmYdCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T22:07:39.628822Z"},"content_sha256":"1eb2c59eb842e8c94bca082c1dcd3a0e8c7b016c20a57fc35ad7029fb53c56d5","schema_version":"1.0","event_id":"sha256:1eb2c59eb842e8c94bca082c1dcd3a0e8c7b016c20a57fc35ad7029fb53c56d5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:7EPWBSPBEK5I2FPO2LM6QSRCHV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multifrequency Synthesis via CHIBI: Colorful Hierarchical Interferometric Bayesian Imaging","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Daniel C. M. Palumbo, Dominic Pesce, Erandi Chavez, Michael D. Johnson, Paul Tiede, Sara Issaoun, Yuh Tsunetoe","submitted_at":"2026-06-02T18:00:06Z","abstract_excerpt":"From magnetized plasma of relativistic jets to dust grains within protoplanetary disks, we study the emission mechanisms of radio sources via their rich spectral structure. Multifrequency Synthesis (MFS) is a technique in which interferometric data at multiple frequencies are imaged simultaneously, resulting in a denser sampling of spatial scales, higher imaging fidelity, and tighter constraints on the source's spectral structure and evolution. We describe a new method of MFS imaging reconstruction in a hierarchical interferometric Bayesian inference framework, CHIBI. The model parametrization"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04094","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/2606.04094/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":"2026-06-04T00:06:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"unrSlWr0JwCUkWTpT3/kim99EU0ZADmEXELNC0jdS+VnyDy02zUd1bOyoduaddbehqFoD0ZLGFjYRDL78KX6Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T22:07:39.629205Z"},"content_sha256":"952387d3a220edff2783cdbccf2dd99192a976b90f6a888d4098a25129847fb2","schema_version":"1.0","event_id":"sha256:952387d3a220edff2783cdbccf2dd99192a976b90f6a888d4098a25129847fb2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7EPWBSPBEK5I2FPO2LM6QSRCHV/bundle.json","state_url":"https://pith.science/pith/7EPWBSPBEK5I2FPO2LM6QSRCHV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7EPWBSPBEK5I2FPO2LM6QSRCHV/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":"2026-06-28T22:07:39Z","links":{"resolver":"https://pith.science/pith/7EPWBSPBEK5I2FPO2LM6QSRCHV","bundle":"https://pith.science/pith/7EPWBSPBEK5I2FPO2LM6QSRCHV/bundle.json","state":"https://pith.science/pith/7EPWBSPBEK5I2FPO2LM6QSRCHV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7EPWBSPBEK5I2FPO2LM6QSRCHV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7EPWBSPBEK5I2FPO2LM6QSRCHV","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":"2ab45657e20ef3ac8efe8baf88c3e161e5d5b5b9e5ae9f7e4f6b0ab851f6d500","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-02T18:00:06Z","title_canon_sha256":"bdbdb8225fbbdbe6bbda7c706550efd8186103751cc4a9dac9308e5a51146f7b"},"schema_version":"1.0","source":{"id":"2606.04094","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04094","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04094v1","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04094","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"pith_short_12","alias_value":"7EPWBSPBEK5I","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"pith_short_16","alias_value":"7EPWBSPBEK5I2FPO","created_at":"2026-06-04T00:06:46Z"},{"alias_kind":"pith_short_8","alias_value":"7EPWBSPB","created_at":"2026-06-04T00:06:46Z"}],"graph_snapshots":[{"event_id":"sha256:952387d3a220edff2783cdbccf2dd99192a976b90f6a888d4098a25129847fb2","target":"graph","created_at":"2026-06-04T00:06:46Z","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/2606.04094/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"From magnetized plasma of relativistic jets to dust grains within protoplanetary disks, we study the emission mechanisms of radio sources via their rich spectral structure. Multifrequency Synthesis (MFS) is a technique in which interferometric data at multiple frequencies are imaged simultaneously, resulting in a denser sampling of spatial scales, higher imaging fidelity, and tighter constraints on the source's spectral structure and evolution. We describe a new method of MFS imaging reconstruction in a hierarchical interferometric Bayesian inference framework, CHIBI. The model parametrization","authors_text":"Daniel C. M. Palumbo, Dominic Pesce, Erandi Chavez, Michael D. Johnson, Paul Tiede, Sara Issaoun, Yuh Tsunetoe","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-02T18:00:06Z","title":"Multifrequency Synthesis via CHIBI: Colorful Hierarchical Interferometric Bayesian Imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04094","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":"sha256:1eb2c59eb842e8c94bca082c1dcd3a0e8c7b016c20a57fc35ad7029fb53c56d5","target":"record","created_at":"2026-06-04T00:06:46Z","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":"2ab45657e20ef3ac8efe8baf88c3e161e5d5b5b9e5ae9f7e4f6b0ab851f6d500","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-02T18:00:06Z","title_canon_sha256":"bdbdb8225fbbdbe6bbda7c706550efd8186103751cc4a9dac9308e5a51146f7b"},"schema_version":"1.0","source":{"id":"2606.04094","kind":"arxiv","version":1}},"canonical_sha256":"f91f60c9e122ba8d15eed2d9e84a223d6db64c4e12f46d2d7bd7b259873a8ff2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f91f60c9e122ba8d15eed2d9e84a223d6db64c4e12f46d2d7bd7b259873a8ff2","first_computed_at":"2026-06-04T00:06:46.443681Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T00:06:46.443681Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"chHj4Dyq3uNTOCtCYDs3nwiX01nQ8iJyc3um73Szfa+YaMAj847x35Ad7RCrMLAMV4aQO4yQZWx1EneGzSW4Dg==","signature_status":"signed_v1","signed_at":"2026-06-04T00:06:46.444026Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.04094","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1eb2c59eb842e8c94bca082c1dcd3a0e8c7b016c20a57fc35ad7029fb53c56d5","sha256:952387d3a220edff2783cdbccf2dd99192a976b90f6a888d4098a25129847fb2"],"state_sha256":"430fc66c6aa63fdb1bd32792c7f97a1dcf3b2d6bdd193fc52555bb690b632a40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1X5cQ7R7Pcy8urp2lor0S14uHdkgHZPv+ginByewwLVBLdyfIDXhwb/VoytfDLjtoagIoKdcWR66FKSj/RiYCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T22:07:39.631245Z","bundle_sha256":"7c05df48fef5595f91ac9ddb8cbe751848976f1a31b75bbacf404933d667d7ca"}}