{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:H5I7S54G23RKVHW57BCKAJYS4X","short_pith_number":"pith:H5I7S54G","canonical_record":{"source":{"id":"2211.12547","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-11-22T19:44:59Z","cross_cats_sorted":["astro-ph.CO","astro-ph.EP","astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"aa68c23a52774801b7d6c6057cd301bf8514e1794c473602431a03731e335525","abstract_canon_sha256":"cd7ad830a7aae2791b2ab08c8cb1e4588019a22eb65da314777667f47584e07c"},"schema_version":"1.0"},"canonical_sha256":"3f51f97786d6e2aa9eddf844a02712e5e4b0dcc6e356dd751a6c7a2fc4cadccd","source":{"kind":"arxiv","id":"2211.12547","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.12547","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"2211.12547v1","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.12547","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"H5I7S54G23RK","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"pith_short_16","alias_value":"H5I7S54G23RKVHW5","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"pith_short_8","alias_value":"H5I7S54G","created_at":"2026-07-05T05:23:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:H5I7S54G23RKVHW57BCKAJYS4X","target":"record","payload":{"canonical_record":{"source":{"id":"2211.12547","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-11-22T19:44:59Z","cross_cats_sorted":["astro-ph.CO","astro-ph.EP","astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"aa68c23a52774801b7d6c6057cd301bf8514e1794c473602431a03731e335525","abstract_canon_sha256":"cd7ad830a7aae2791b2ab08c8cb1e4588019a22eb65da314777667f47584e07c"},"schema_version":"1.0"},"canonical_sha256":"3f51f97786d6e2aa9eddf844a02712e5e4b0dcc6e356dd751a6c7a2fc4cadccd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:23:01.115743Z","signature_b64":"csUcwQUenfoVeWtSqtZ92iXGqvZodkJsFayFHCWsZMnE48Wzl7fcWOmjBBwGj0z/WGThR1Iq1Ywn6tFmSJD6Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f51f97786d6e2aa9eddf844a02712e5e4b0dcc6e356dd751a6c7a2fc4cadccd","last_reissued_at":"2026-07-05T05:23:01.115347Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:23:01.115347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.12547","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":"2026-07-05T05:23:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8ZK3D06C/5DcQ2vV5zeTT3BfZJnAvq/EiONr3+F4lpnwytTMET57T4dMGwIk5hd5ULq2I9l4IqdKXwKX8FUdDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:11:00.211050Z"},"content_sha256":"fb2853b88ff771883df4af67c678bcfcca21e0a76bd5966eb7ef038c09475637","schema_version":"1.0","event_id":"sha256:fb2853b88ff771883df4af67c678bcfcca21e0a76bd5966eb7ef038c09475637"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:H5I7S54G23RKVHW57BCKAJYS4X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radiative Transfer as a Bayesian Linear Regression problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.EP","astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Frederik De Ceuster, Jeremy Yates, Jon Cockayne, Leen Decin, Thomas Ceulemans","submitted_at":"2022-11-22T19:44:59Z","abstract_excerpt":"Electromagnetic radiation plays a crucial role in various physical and chemical processes. Hence, almost all astrophysical simulations require some form of radiative transfer model. Despite many innovations in radiative transfer algorithms and their implementation, realistic radiative transfer models remain very computationally expensive, such that one often has to resort to approximate descriptions. The complexity of these models makes it difficult to assess the validity of any approximation and to quantify uncertainties on the model results. This impedes scientific rigour, in particular, whe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.12547","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/2211.12547/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":"2026-07-05T05:23:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"08Oe2tIcKo4pe8D2HDx4xLeMxOa+CJcVYvq65s8ssCqlTC9K3hU/B6VQwDxR34MHXeqWXs5qVeyKMSKmeB6PBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:11:00.211565Z"},"content_sha256":"ef31160d7cdc8fcaf076526b01dd544fbb32c88c36478be369fc1f768111a628","schema_version":"1.0","event_id":"sha256:ef31160d7cdc8fcaf076526b01dd544fbb32c88c36478be369fc1f768111a628"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H5I7S54G23RKVHW57BCKAJYS4X/bundle.json","state_url":"https://pith.science/pith/H5I7S54G23RKVHW57BCKAJYS4X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H5I7S54G23RKVHW57BCKAJYS4X/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":"2026-08-06T10:11:00Z","links":{"resolver":"https://pith.science/pith/H5I7S54G23RKVHW57BCKAJYS4X","bundle":"https://pith.science/pith/H5I7S54G23RKVHW57BCKAJYS4X/bundle.json","state":"https://pith.science/pith/H5I7S54G23RKVHW57BCKAJYS4X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H5I7S54G23RKVHW57BCKAJYS4X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:H5I7S54G23RKVHW57BCKAJYS4X","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":"cd7ad830a7aae2791b2ab08c8cb1e4588019a22eb65da314777667f47584e07c","cross_cats_sorted":["astro-ph.CO","astro-ph.EP","astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-11-22T19:44:59Z","title_canon_sha256":"aa68c23a52774801b7d6c6057cd301bf8514e1794c473602431a03731e335525"},"schema_version":"1.0","source":{"id":"2211.12547","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.12547","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"arxiv_version","alias_value":"2211.12547v1","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.12547","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"pith_short_12","alias_value":"H5I7S54G23RK","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"pith_short_16","alias_value":"H5I7S54G23RKVHW5","created_at":"2026-07-05T05:23:01Z"},{"alias_kind":"pith_short_8","alias_value":"H5I7S54G","created_at":"2026-07-05T05:23:01Z"}],"graph_snapshots":[{"event_id":"sha256:ef31160d7cdc8fcaf076526b01dd544fbb32c88c36478be369fc1f768111a628","target":"graph","created_at":"2026-07-05T05:23:01Z","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/2211.12547/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Electromagnetic radiation plays a crucial role in various physical and chemical processes. Hence, almost all astrophysical simulations require some form of radiative transfer model. Despite many innovations in radiative transfer algorithms and their implementation, realistic radiative transfer models remain very computationally expensive, such that one often has to resort to approximate descriptions. The complexity of these models makes it difficult to assess the validity of any approximation and to quantify uncertainties on the model results. This impedes scientific rigour, in particular, whe","authors_text":"Frederik De Ceuster, Jeremy Yates, Jon Cockayne, Leen Decin, Thomas Ceulemans","cross_cats":["astro-ph.CO","astro-ph.EP","astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-11-22T19:44:59Z","title":"Radiative Transfer as a Bayesian Linear Regression problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.12547","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:fb2853b88ff771883df4af67c678bcfcca21e0a76bd5966eb7ef038c09475637","target":"record","created_at":"2026-07-05T05:23:01Z","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":"cd7ad830a7aae2791b2ab08c8cb1e4588019a22eb65da314777667f47584e07c","cross_cats_sorted":["astro-ph.CO","astro-ph.EP","astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-11-22T19:44:59Z","title_canon_sha256":"aa68c23a52774801b7d6c6057cd301bf8514e1794c473602431a03731e335525"},"schema_version":"1.0","source":{"id":"2211.12547","kind":"arxiv","version":1}},"canonical_sha256":"3f51f97786d6e2aa9eddf844a02712e5e4b0dcc6e356dd751a6c7a2fc4cadccd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f51f97786d6e2aa9eddf844a02712e5e4b0dcc6e356dd751a6c7a2fc4cadccd","first_computed_at":"2026-07-05T05:23:01.115347Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:23:01.115347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"csUcwQUenfoVeWtSqtZ92iXGqvZodkJsFayFHCWsZMnE48Wzl7fcWOmjBBwGj0z/WGThR1Iq1Ywn6tFmSJD6Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:23:01.115743Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.12547","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb2853b88ff771883df4af67c678bcfcca21e0a76bd5966eb7ef038c09475637","sha256:ef31160d7cdc8fcaf076526b01dd544fbb32c88c36478be369fc1f768111a628"],"state_sha256":"fc9b5e63a039c64c4f29e71e025574bdbc51a8f1cacaca56704c05bf4dda722e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f4D8qReECePFszf0Vi6Wc2tVRZt5JNY8lV2FJOIBay9qYCee7y0dtxKSsQA6mo9cgPp5B2zCVZVy+QTNRAIiBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T10:11:00.215353Z","bundle_sha256":"01d6501f01de2c9f1c7dabb52757bf89fe7e0c84dcc2e86244ac1728c92bbdb7"}}