{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:QYP3NEP2XRQ2BH3N77COPA5XNB","short_pith_number":"pith:QYP3NEP2","canonical_record":{"source":{"id":"2502.00100","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-01-31T19:00:01Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"27d88b13f20d10872c433020601960c275ec7f52a126113d150d4ab1efc06094","abstract_canon_sha256":"d01147f76e464d91f0c622a839ad35c2458264e347ae634df2e1c3465135669f"},"schema_version":"1.0"},"canonical_sha256":"861fb691fabc61a09f6dffc4e783b7685597d005e9397c76896270f5ded1fdae","source":{"kind":"arxiv","id":"2502.00100","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.00100","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"arxiv_version","alias_value":"2502.00100v1","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.00100","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"pith_short_12","alias_value":"QYP3NEP2XRQ2","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"pith_short_16","alias_value":"QYP3NEP2XRQ2BH3N","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"pith_short_8","alias_value":"QYP3NEP2","created_at":"2026-07-05T10:08:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:QYP3NEP2XRQ2BH3N77COPA5XNB","target":"record","payload":{"canonical_record":{"source":{"id":"2502.00100","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-01-31T19:00:01Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"27d88b13f20d10872c433020601960c275ec7f52a126113d150d4ab1efc06094","abstract_canon_sha256":"d01147f76e464d91f0c622a839ad35c2458264e347ae634df2e1c3465135669f"},"schema_version":"1.0"},"canonical_sha256":"861fb691fabc61a09f6dffc4e783b7685597d005e9397c76896270f5ded1fdae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:08:02.973074Z","signature_b64":"9b/dnTUHvITWWQs4Om28W9F4peUaI4QMAd8+9NAzNr6ErqK1t/yOaGqPRk/vWB6uTQy+DK64wOf1sDxHzgh0AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"861fb691fabc61a09f6dffc4e783b7685597d005e9397c76896270f5ded1fdae","last_reissued_at":"2026-07-05T10:08:02.972644Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:08:02.972644Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.00100","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":"2026-07-05T10:08:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HmYeOXYp1wlpWVgSMOmcBFnBYP6L9E+g5tVTvfZx2XhSwOOsX2eQsZanRO5P3fST1mUNenYHbKmtDfQoExQECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T16:34:50.578940Z"},"content_sha256":"d9ad07d4834e8b579a14d3ab94ad77f937980deea88ecd54f16e7fcfb131ef12","schema_version":"1.0","event_id":"sha256:d9ad07d4834e8b579a14d3ab94ad77f937980deea88ecd54f16e7fcfb131ef12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:QYP3NEP2XRQ2BH3N77COPA5XNB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Million Points of Light (MPoL): a PyTorch library for radio interferometric imaging and inference","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"Brianna Zawadzki, Hannah Grzybowski, Ian Czekala, Jane Huang, Jeff Jennings, Kadri Nizam, Kaylee de Soto, Mary Ogborn, Megan Delamer, Robert Frazier, Ryan Loomis, Tyler Quinn","submitted_at":"2025-01-31T19:00:01Z","abstract_excerpt":"Astronomical radio interferometers achieve exquisite angular resolution by cross-correlating signal from a cosmic source simultaneously observed by distant pairs of radio telescopes to produce a Fourier-type measurement called a visibility. Million Points of Light (MPoL) is a Python library supporting feed-forward modeling of interferometric visibility datasets for synthesis imaging and parametric Bayesian inference, built using the autodifferentiable machine learning framework PyTorch. Neural network components provide a rich set of modular and composable building blocks that can be used to e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.00100","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/2502.00100/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":"2026-07-05T10:08:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fGLTCQEMnalr5W/lH0rKoyXOT3IZBRbhMK0fTKsg1KI//Iveg2QKt8k1W6D2yX5qtQ2sXzeHvSqOSUoxKFohBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T16:34:50.579801Z"},"content_sha256":"d18d5e351cf93a038da8ed52f2d67f5a0aff118db0c4a9d97403f98449041842","schema_version":"1.0","event_id":"sha256:d18d5e351cf93a038da8ed52f2d67f5a0aff118db0c4a9d97403f98449041842"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QYP3NEP2XRQ2BH3N77COPA5XNB/bundle.json","state_url":"https://pith.science/pith/QYP3NEP2XRQ2BH3N77COPA5XNB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QYP3NEP2XRQ2BH3N77COPA5XNB/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":"2026-08-05T16:34:50Z","links":{"resolver":"https://pith.science/pith/QYP3NEP2XRQ2BH3N77COPA5XNB","bundle":"https://pith.science/pith/QYP3NEP2XRQ2BH3N77COPA5XNB/bundle.json","state":"https://pith.science/pith/QYP3NEP2XRQ2BH3N77COPA5XNB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QYP3NEP2XRQ2BH3N77COPA5XNB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:QYP3NEP2XRQ2BH3N77COPA5XNB","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":"d01147f76e464d91f0c622a839ad35c2458264e347ae634df2e1c3465135669f","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-01-31T19:00:01Z","title_canon_sha256":"27d88b13f20d10872c433020601960c275ec7f52a126113d150d4ab1efc06094"},"schema_version":"1.0","source":{"id":"2502.00100","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.00100","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"arxiv_version","alias_value":"2502.00100v1","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.00100","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"pith_short_12","alias_value":"QYP3NEP2XRQ2","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"pith_short_16","alias_value":"QYP3NEP2XRQ2BH3N","created_at":"2026-07-05T10:08:02Z"},{"alias_kind":"pith_short_8","alias_value":"QYP3NEP2","created_at":"2026-07-05T10:08:02Z"}],"graph_snapshots":[{"event_id":"sha256:d18d5e351cf93a038da8ed52f2d67f5a0aff118db0c4a9d97403f98449041842","target":"graph","created_at":"2026-07-05T10:08:02Z","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/2502.00100/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Astronomical radio interferometers achieve exquisite angular resolution by cross-correlating signal from a cosmic source simultaneously observed by distant pairs of radio telescopes to produce a Fourier-type measurement called a visibility. Million Points of Light (MPoL) is a Python library supporting feed-forward modeling of interferometric visibility datasets for synthesis imaging and parametric Bayesian inference, built using the autodifferentiable machine learning framework PyTorch. Neural network components provide a rich set of modular and composable building blocks that can be used to e","authors_text":"Brianna Zawadzki, Hannah Grzybowski, Ian Czekala, Jane Huang, Jeff Jennings, Kadri Nizam, Kaylee de Soto, Mary Ogborn, Megan Delamer, Robert Frazier, Ryan Loomis, Tyler Quinn","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-01-31T19:00:01Z","title":"Million Points of Light (MPoL): a PyTorch library for radio interferometric imaging and inference"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.00100","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:d9ad07d4834e8b579a14d3ab94ad77f937980deea88ecd54f16e7fcfb131ef12","target":"record","created_at":"2026-07-05T10:08:02Z","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":"d01147f76e464d91f0c622a839ad35c2458264e347ae634df2e1c3465135669f","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-01-31T19:00:01Z","title_canon_sha256":"27d88b13f20d10872c433020601960c275ec7f52a126113d150d4ab1efc06094"},"schema_version":"1.0","source":{"id":"2502.00100","kind":"arxiv","version":1}},"canonical_sha256":"861fb691fabc61a09f6dffc4e783b7685597d005e9397c76896270f5ded1fdae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"861fb691fabc61a09f6dffc4e783b7685597d005e9397c76896270f5ded1fdae","first_computed_at":"2026-07-05T10:08:02.972644Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:08:02.972644Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9b/dnTUHvITWWQs4Om28W9F4peUaI4QMAd8+9NAzNr6ErqK1t/yOaGqPRk/vWB6uTQy+DK64wOf1sDxHzgh0AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:08:02.973074Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.00100","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9ad07d4834e8b579a14d3ab94ad77f937980deea88ecd54f16e7fcfb131ef12","sha256:d18d5e351cf93a038da8ed52f2d67f5a0aff118db0c4a9d97403f98449041842"],"state_sha256":"48be7a073d2744322e056da06f9209df734e5bd0cda488dae6e38f1bc7db002c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zOqSgOjAygMQ9mt2zDwKsNymntGEeCrIEjkO6ySNRe6ry13D1tCShXyzQTb1isAMHlivKxnzgGArHDhYJhw4Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T16:34:50.584639Z","bundle_sha256":"8e94e568afcc9d60cd0cbf8b9d9019261f73d1c1134345d7126446a5e8ed21fc"}}