{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:D2BVCIVGY52F7LF3FMOE4FLVWM","short_pith_number":"pith:D2BVCIVG","canonical_record":{"source":{"id":"1908.02815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-07T19:56:47Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"b1a99e13f760ca33827f114b1a74f2a05a9819c3b26ab558ffb25a1b91b2209e","abstract_canon_sha256":"45f7db2689877c5b721a124fd5e180338f3295e327b133e167e91e6fdc1a92b3"},"schema_version":"1.0"},"canonical_sha256":"1e835122a6c7745facbb2b1c4e1575b32d16800af84cc554b8c6722e462dabb7","source":{"kind":"arxiv","id":"1908.02815","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.02815","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"arxiv_version","alias_value":"1908.02815v1","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02815","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"pith_short_12","alias_value":"D2BVCIVGY52F","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"pith_short_16","alias_value":"D2BVCIVGY52F7LF3","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"pith_short_8","alias_value":"D2BVCIVG","created_at":"2026-07-05T00:03:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:D2BVCIVGY52F7LF3FMOE4FLVWM","target":"record","payload":{"canonical_record":{"source":{"id":"1908.02815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-07T19:56:47Z","cross_cats_sorted":["eess.IV"],"title_canon_sha256":"b1a99e13f760ca33827f114b1a74f2a05a9819c3b26ab558ffb25a1b91b2209e","abstract_canon_sha256":"45f7db2689877c5b721a124fd5e180338f3295e327b133e167e91e6fdc1a92b3"},"schema_version":"1.0"},"canonical_sha256":"1e835122a6c7745facbb2b1c4e1575b32d16800af84cc554b8c6722e462dabb7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:03:51.368341Z","signature_b64":"nz1c1UtXYTNHvQIlo9brV/r6Atgps3HhxWscvB/1a9+uVzLb/1B4McqXvaQoLVcExiw6G+1uNdc4XDG2pdfeBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e835122a6c7745facbb2b1c4e1575b32d16800af84cc554b8c6722e462dabb7","last_reissued_at":"2026-07-05T00:03:51.367980Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:03:51.367980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.02815","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":"2026-07-05T00:03:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WXZd3klgrmsDgf1AWEcKNedk448iQms2vcsEmRkQL9MMYJTjRabojl/pbPiRqSWYSEt7+2kVdJg7lQkJ1+5zCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T07:02:37.402160Z"},"content_sha256":"eef1f82630facba42492a5fe48646d62bb4577b742a0d575533dd668bbecd1a9","schema_version":"1.0","event_id":"sha256:eef1f82630facba42492a5fe48646d62bb4577b742a0d575533dd668bbecd1a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:D2BVCIVGY52F7LF3FMOE4FLVWM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Solar image denoising with convolutional neural networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.IV"],"primary_cat":"astro-ph.SR","authors_text":"C. J. D\\'iaz Baso, J. de la Cruz Rodr\\'iguez, S. Danilovic","submitted_at":"2019-08-07T19:56:47Z","abstract_excerpt":"The topology and dynamics of the solar chromosphere are greatly affected by the presence of magnetic fields. The magnetic field can be inferred by analyzing polarimetric observations of spectral lines. Polarimetric signals induced by chromospheric magnetic fields are, however, particularly weak, and in most cases very close to the detection limit of current instrumentation. Because of this, there are only few observational studies that have successfully reconstructed the three components of the magnetic field vector in the chromosphere. Traditionally, the signal-to-noise ratio of observations "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02815","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/1908.02815/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":"2026-07-05T00:03:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z+mKdhXivv64HOJAMpxS0Vg9VKf16j3x+19ZpEt+cIdX39CFXtuSxqZIR/+63xe8GQFHxAEiwvrDmrLud0MHCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T07:02:37.402670Z"},"content_sha256":"6f00278f9c28aaebc776f1699d40117f1281db9cf299af7e0a424c2b0c456cfc","schema_version":"1.0","event_id":"sha256:6f00278f9c28aaebc776f1699d40117f1281db9cf299af7e0a424c2b0c456cfc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D2BVCIVGY52F7LF3FMOE4FLVWM/bundle.json","state_url":"https://pith.science/pith/D2BVCIVGY52F7LF3FMOE4FLVWM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D2BVCIVGY52F7LF3FMOE4FLVWM/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":"2026-08-15T07:02:37Z","links":{"resolver":"https://pith.science/pith/D2BVCIVGY52F7LF3FMOE4FLVWM","bundle":"https://pith.science/pith/D2BVCIVGY52F7LF3FMOE4FLVWM/bundle.json","state":"https://pith.science/pith/D2BVCIVGY52F7LF3FMOE4FLVWM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D2BVCIVGY52F7LF3FMOE4FLVWM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:D2BVCIVGY52F7LF3FMOE4FLVWM","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":"45f7db2689877c5b721a124fd5e180338f3295e327b133e167e91e6fdc1a92b3","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-07T19:56:47Z","title_canon_sha256":"b1a99e13f760ca33827f114b1a74f2a05a9819c3b26ab558ffb25a1b91b2209e"},"schema_version":"1.0","source":{"id":"1908.02815","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.02815","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"arxiv_version","alias_value":"1908.02815v1","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02815","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"pith_short_12","alias_value":"D2BVCIVGY52F","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"pith_short_16","alias_value":"D2BVCIVGY52F7LF3","created_at":"2026-07-05T00:03:51Z"},{"alias_kind":"pith_short_8","alias_value":"D2BVCIVG","created_at":"2026-07-05T00:03:51Z"}],"graph_snapshots":[{"event_id":"sha256:6f00278f9c28aaebc776f1699d40117f1281db9cf299af7e0a424c2b0c456cfc","target":"graph","created_at":"2026-07-05T00:03:51Z","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/1908.02815/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The topology and dynamics of the solar chromosphere are greatly affected by the presence of magnetic fields. The magnetic field can be inferred by analyzing polarimetric observations of spectral lines. Polarimetric signals induced by chromospheric magnetic fields are, however, particularly weak, and in most cases very close to the detection limit of current instrumentation. Because of this, there are only few observational studies that have successfully reconstructed the three components of the magnetic field vector in the chromosphere. Traditionally, the signal-to-noise ratio of observations ","authors_text":"C. J. D\\'iaz Baso, J. de la Cruz Rodr\\'iguez, S. Danilovic","cross_cats":["eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-07T19:56:47Z","title":"Solar image denoising with convolutional neural networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02815","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:eef1f82630facba42492a5fe48646d62bb4577b742a0d575533dd668bbecd1a9","target":"record","created_at":"2026-07-05T00:03:51Z","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":"45f7db2689877c5b721a124fd5e180338f3295e327b133e167e91e6fdc1a92b3","cross_cats_sorted":["eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-08-07T19:56:47Z","title_canon_sha256":"b1a99e13f760ca33827f114b1a74f2a05a9819c3b26ab558ffb25a1b91b2209e"},"schema_version":"1.0","source":{"id":"1908.02815","kind":"arxiv","version":1}},"canonical_sha256":"1e835122a6c7745facbb2b1c4e1575b32d16800af84cc554b8c6722e462dabb7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e835122a6c7745facbb2b1c4e1575b32d16800af84cc554b8c6722e462dabb7","first_computed_at":"2026-07-05T00:03:51.367980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:03:51.367980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nz1c1UtXYTNHvQIlo9brV/r6Atgps3HhxWscvB/1a9+uVzLb/1B4McqXvaQoLVcExiw6G+1uNdc4XDG2pdfeBA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:03:51.368341Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.02815","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eef1f82630facba42492a5fe48646d62bb4577b742a0d575533dd668bbecd1a9","sha256:6f00278f9c28aaebc776f1699d40117f1281db9cf299af7e0a424c2b0c456cfc"],"state_sha256":"cd015d6cb640c82ae8ac3df6ef38b5402b59cb32f0ab4b709c590498119bfa24"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5ctO7BWwXVEDQZtW4Y9DiUNKtQjlaUuU1j6otQrvZyKiAPYd/WxXa4vqtjNkYAUUmY5nLxCPd6+I7Z2q5zoTDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T07:02:37.406140Z","bundle_sha256":"7abb9c3f36ef5920ae9068e1a1fe3b99e966ac3b62271998c5003a7ceeb1367f"}}