{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QZUSKU3BLUD35JVFPAZYBUQWTG","short_pith_number":"pith:QZUSKU3B","canonical_record":{"source":{"id":"2601.07485","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-01-12T12:40:10Z","cross_cats_sorted":[],"title_canon_sha256":"2378c6177ee5115aaec608b2837819a6445f7096884bdefb4d483279678cde31","abstract_canon_sha256":"729ad2c695e0d869d448f0516d2950e3a5311a87bd419a916412467ab931a353"},"schema_version":"1.0"},"canonical_sha256":"86692553615d07bea6a5783380d21699a05dc5b9a22a065d8088c15f6bfbac12","source":{"kind":"arxiv","id":"2601.07485","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.07485","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"arxiv_version","alias_value":"2601.07485v2","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.07485","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"pith_short_12","alias_value":"QZUSKU3BLUD3","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"pith_short_16","alias_value":"QZUSKU3BLUD35JVF","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"pith_short_8","alias_value":"QZUSKU3B","created_at":"2026-05-26T01:03:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QZUSKU3BLUD35JVFPAZYBUQWTG","target":"record","payload":{"canonical_record":{"source":{"id":"2601.07485","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-01-12T12:40:10Z","cross_cats_sorted":[],"title_canon_sha256":"2378c6177ee5115aaec608b2837819a6445f7096884bdefb4d483279678cde31","abstract_canon_sha256":"729ad2c695e0d869d448f0516d2950e3a5311a87bd419a916412467ab931a353"},"schema_version":"1.0"},"canonical_sha256":"86692553615d07bea6a5783380d21699a05dc5b9a22a065d8088c15f6bfbac12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T01:03:22.161261Z","signature_b64":"MVkzTjY0rLF8IPqLbIFROhjAoKEcdcSiniBhC3Mq4F2100N2W3q2tqTwexS6/Q95OX/5tyfYDNbojfQCs+7rDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"86692553615d07bea6a5783380d21699a05dc5b9a22a065d8088c15f6bfbac12","last_reissued_at":"2026-05-26T01:03:22.160196Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T01:03:22.160196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2601.07485","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-26T01:03:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U9FHlULISgqFaOe0wx+PFrQvstbOsf+3ecv3RPcCa5j8cEK5AFJlj9V9QxJfIOV2DIQA+5r9ehECc9wDjtFHBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T09:22:37.494593Z"},"content_sha256":"55fcc46b65e9fbce132658f253855065e00edeebc9e54a27523e13d0503bb077","schema_version":"1.0","event_id":"sha256:55fcc46b65e9fbce132658f253855065e00edeebc9e54a27523e13d0503bb077"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QZUSKU3BLUD35JVFPAZYBUQWTG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Guided Unconditional Diffusion Model to Synthesize and Inpaint Radio Galaxies from FIRST, MGCLS and Radio Zoo","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Emma Tolley, R\\'emi Poitevineau, Verlon Etsebeth","submitted_at":"2026-01-12T12:40:10Z","abstract_excerpt":"We present a masked-guided approach for a denoising diffusion probabilistic model (DDPM) trained to generate and inpaint realistic radio galaxy images. The inpainting capability is particularly relevant for reconstructing incomplete observations, improving downstream tasks such as source characterization and morphological classification. We train the model on a combination of the FIRST survey, Radio Galaxy Zoo, and cutouts from the MGCLS survey, enabling it to capture a broad range of radio galaxy morphologies across different observational regimes. We evaluate the realism of the generated sam"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.07485","kind":"arxiv","version":2},"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/2601.07485/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":"2026-05-26T01:03:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lMxtpmt9Zr+Stu79q7JvXiqGSA1OmbNjs/qlC3e7/TxDIMefI9IwwOFm7+Q1RBEOZdhUID+x5YgwvSNnway1Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T09:22:37.494973Z"},"content_sha256":"a8dd85322dfdd1f479924afe35b0ddc2101fe7633b1c7eb144d2c0ec4dfc0a8d","schema_version":"1.0","event_id":"sha256:a8dd85322dfdd1f479924afe35b0ddc2101fe7633b1c7eb144d2c0ec4dfc0a8d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QZUSKU3BLUD35JVFPAZYBUQWTG/bundle.json","state_url":"https://pith.science/pith/QZUSKU3BLUD35JVFPAZYBUQWTG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QZUSKU3BLUD35JVFPAZYBUQWTG/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":"2026-06-08T09:22:37Z","links":{"resolver":"https://pith.science/pith/QZUSKU3BLUD35JVFPAZYBUQWTG","bundle":"https://pith.science/pith/QZUSKU3BLUD35JVFPAZYBUQWTG/bundle.json","state":"https://pith.science/pith/QZUSKU3BLUD35JVFPAZYBUQWTG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QZUSKU3BLUD35JVFPAZYBUQWTG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QZUSKU3BLUD35JVFPAZYBUQWTG","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":"729ad2c695e0d869d448f0516d2950e3a5311a87bd419a916412467ab931a353","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-01-12T12:40:10Z","title_canon_sha256":"2378c6177ee5115aaec608b2837819a6445f7096884bdefb4d483279678cde31"},"schema_version":"1.0","source":{"id":"2601.07485","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.07485","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"arxiv_version","alias_value":"2601.07485v2","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.07485","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"pith_short_12","alias_value":"QZUSKU3BLUD3","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"pith_short_16","alias_value":"QZUSKU3BLUD35JVF","created_at":"2026-05-26T01:03:22Z"},{"alias_kind":"pith_short_8","alias_value":"QZUSKU3B","created_at":"2026-05-26T01:03:22Z"}],"graph_snapshots":[{"event_id":"sha256:a8dd85322dfdd1f479924afe35b0ddc2101fe7633b1c7eb144d2c0ec4dfc0a8d","target":"graph","created_at":"2026-05-26T01:03:22Z","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/2601.07485/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a masked-guided approach for a denoising diffusion probabilistic model (DDPM) trained to generate and inpaint realistic radio galaxy images. The inpainting capability is particularly relevant for reconstructing incomplete observations, improving downstream tasks such as source characterization and morphological classification. We train the model on a combination of the FIRST survey, Radio Galaxy Zoo, and cutouts from the MGCLS survey, enabling it to capture a broad range of radio galaxy morphologies across different observational regimes. We evaluate the realism of the generated sam","authors_text":"Emma Tolley, R\\'emi Poitevineau, Verlon Etsebeth","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-01-12T12:40:10Z","title":"A Guided Unconditional Diffusion Model to Synthesize and Inpaint Radio Galaxies from FIRST, MGCLS and Radio Zoo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.07485","kind":"arxiv","version":2},"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":"sha256:55fcc46b65e9fbce132658f253855065e00edeebc9e54a27523e13d0503bb077","target":"record","created_at":"2026-05-26T01:03:22Z","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":"729ad2c695e0d869d448f0516d2950e3a5311a87bd419a916412467ab931a353","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-01-12T12:40:10Z","title_canon_sha256":"2378c6177ee5115aaec608b2837819a6445f7096884bdefb4d483279678cde31"},"schema_version":"1.0","source":{"id":"2601.07485","kind":"arxiv","version":2}},"canonical_sha256":"86692553615d07bea6a5783380d21699a05dc5b9a22a065d8088c15f6bfbac12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"86692553615d07bea6a5783380d21699a05dc5b9a22a065d8088c15f6bfbac12","first_computed_at":"2026-05-26T01:03:22.160196Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T01:03:22.160196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MVkzTjY0rLF8IPqLbIFROhjAoKEcdcSiniBhC3Mq4F2100N2W3q2tqTwexS6/Q95OX/5tyfYDNbojfQCs+7rDw==","signature_status":"signed_v1","signed_at":"2026-05-26T01:03:22.161261Z","signed_message":"canonical_sha256_bytes"},"source_id":"2601.07485","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55fcc46b65e9fbce132658f253855065e00edeebc9e54a27523e13d0503bb077","sha256:a8dd85322dfdd1f479924afe35b0ddc2101fe7633b1c7eb144d2c0ec4dfc0a8d"],"state_sha256":"ac2319dae1d8063fa007809b02526bf0f75419e2e4052ce9cd79558d29a1e70e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xq1bNs92NgYZci8jSUJKxi5di7wbV/IJJkoXWlpUwZoyRnPg7Y9QHiZm6LdrnCQkFcOwby4SEdS3CP47hFJoBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T09:22:37.497123Z","bundle_sha256":"8bb661e0c71d44d82c94dd3bab62f2e50dcdc11437f259f0b3034d936e3a0fa4"}}