{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:IQKZQ7FH25XCG3MCEQWXDUVIY3","short_pith_number":"pith:IQKZQ7FH","canonical_record":{"source":{"id":"1204.4448","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-19T07:10:55Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"28a17fe0c50aec806f0f029c21443d18be2787a52dffbc0d88f17af490e1886d","abstract_canon_sha256":"19302a291738b9ef9b86c68b1a441f74850125cb8d46badf41ff4203ab1a597f"},"schema_version":"1.0"},"canonical_sha256":"4415987ca7d76e236d82242d71d2a8c6c0827958093dff82f80e7b4419d00e8a","source":{"kind":"arxiv","id":"1204.4448","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4448","created_at":"2026-05-18T03:57:27Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4448v1","created_at":"2026-05-18T03:57:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4448","created_at":"2026-05-18T03:57:27Z"},{"alias_kind":"pith_short_12","alias_value":"IQKZQ7FH25XC","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IQKZQ7FH25XCG3MC","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IQKZQ7FH","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:IQKZQ7FH25XCG3MCEQWXDUVIY3","target":"record","payload":{"canonical_record":{"source":{"id":"1204.4448","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-19T07:10:55Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"28a17fe0c50aec806f0f029c21443d18be2787a52dffbc0d88f17af490e1886d","abstract_canon_sha256":"19302a291738b9ef9b86c68b1a441f74850125cb8d46badf41ff4203ab1a597f"},"schema_version":"1.0"},"canonical_sha256":"4415987ca7d76e236d82242d71d2a8c6c0827958093dff82f80e7b4419d00e8a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:57:27.301048Z","signature_b64":"uZ/wmv9hf3rOnU5x0BUsagU7bSGcSyAh7YB9Lya7AoHlQ7JMIt/m12o9LI1BFHsXnphW1vELtDibbvsZhDFvAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4415987ca7d76e236d82242d71d2a8c6c0827958093dff82f80e7b4419d00e8a","last_reissued_at":"2026-05-18T03:57:27.300309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:57:27.300309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.4448","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":"2026-05-18T03:57:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qbWb+OIEdYRzqTN9WXebvVV+ZM7UMKColb7cDKkO4+4RTmQRWSn9Sp3O2I19K4K2zRLfQxNuGKNpmxzMITXIDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T18:35:50.254276Z"},"content_sha256":"650e48915afa5eda07dbab182882816afd72c3a5ef5bed2392cb24d17661327d","schema_version":"1.0","event_id":"sha256:650e48915afa5eda07dbab182882816afd72c3a5ef5bed2392cb24d17661327d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:IQKZQ7FH25XCG3MCEQWXDUVIY3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measuring the solar atmosphere","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Jaime de la Cruz Rodr\\'iguez","submitted_at":"2012-04-19T07:10:55Z","abstract_excerpt":"The new CRISP filter at the Swedish 1-m Solar Telescope provides opportunities for observing the solar atmosphere with unprecedented spatial resolution and cadence. In order to benefit from the high quality of observational data from this instrument, we have developed methods for calibrating and restoring polarized Stokes images, obtained at optical and near infrared wavelengths, taking into account field-of-view variations of the filter properties.\n  In order to facilitate velocity measurements, a time series from a 3D hydrodynamical granulation simulation is used to compute quiet Sun spectra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4448","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":""},"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":"2026-05-18T03:57:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sndaeysAB1k7wEz5d25gnAcl6xRbUFyx8OfbhpKZjHxw9hinNR5v1xnbcgjJ+/eoWWS+B7xqm9uYDg5/PSUXBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T18:35:50.254658Z"},"content_sha256":"bdafc852ee214017bed90732fc01985fde61705a134f25b856b40000a915477e","schema_version":"1.0","event_id":"sha256:bdafc852ee214017bed90732fc01985fde61705a134f25b856b40000a915477e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IQKZQ7FH25XCG3MCEQWXDUVIY3/bundle.json","state_url":"https://pith.science/pith/IQKZQ7FH25XCG3MCEQWXDUVIY3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IQKZQ7FH25XCG3MCEQWXDUVIY3/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":"2026-06-05T18:35:50Z","links":{"resolver":"https://pith.science/pith/IQKZQ7FH25XCG3MCEQWXDUVIY3","bundle":"https://pith.science/pith/IQKZQ7FH25XCG3MCEQWXDUVIY3/bundle.json","state":"https://pith.science/pith/IQKZQ7FH25XCG3MCEQWXDUVIY3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IQKZQ7FH25XCG3MCEQWXDUVIY3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IQKZQ7FH25XCG3MCEQWXDUVIY3","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":"19302a291738b9ef9b86c68b1a441f74850125cb8d46badf41ff4203ab1a597f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-19T07:10:55Z","title_canon_sha256":"28a17fe0c50aec806f0f029c21443d18be2787a52dffbc0d88f17af490e1886d"},"schema_version":"1.0","source":{"id":"1204.4448","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.4448","created_at":"2026-05-18T03:57:27Z"},{"alias_kind":"arxiv_version","alias_value":"1204.4448v1","created_at":"2026-05-18T03:57:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.4448","created_at":"2026-05-18T03:57:27Z"},{"alias_kind":"pith_short_12","alias_value":"IQKZQ7FH25XC","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IQKZQ7FH25XCG3MC","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IQKZQ7FH","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:bdafc852ee214017bed90732fc01985fde61705a134f25b856b40000a915477e","target":"graph","created_at":"2026-05-18T03:57:27Z","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"},"paper":{"abstract_excerpt":"The new CRISP filter at the Swedish 1-m Solar Telescope provides opportunities for observing the solar atmosphere with unprecedented spatial resolution and cadence. In order to benefit from the high quality of observational data from this instrument, we have developed methods for calibrating and restoring polarized Stokes images, obtained at optical and near infrared wavelengths, taking into account field-of-view variations of the filter properties.\n  In order to facilitate velocity measurements, a time series from a 3D hydrodynamical granulation simulation is used to compute quiet Sun spectra","authors_text":"Jaime de la Cruz Rodr\\'iguez","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-19T07:10:55Z","title":"Measuring the solar atmosphere"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.4448","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":"sha256:650e48915afa5eda07dbab182882816afd72c3a5ef5bed2392cb24d17661327d","target":"record","created_at":"2026-05-18T03:57:27Z","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":"19302a291738b9ef9b86c68b1a441f74850125cb8d46badf41ff4203ab1a597f","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-19T07:10:55Z","title_canon_sha256":"28a17fe0c50aec806f0f029c21443d18be2787a52dffbc0d88f17af490e1886d"},"schema_version":"1.0","source":{"id":"1204.4448","kind":"arxiv","version":1}},"canonical_sha256":"4415987ca7d76e236d82242d71d2a8c6c0827958093dff82f80e7b4419d00e8a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4415987ca7d76e236d82242d71d2a8c6c0827958093dff82f80e7b4419d00e8a","first_computed_at":"2026-05-18T03:57:27.300309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:57:27.300309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uZ/wmv9hf3rOnU5x0BUsagU7bSGcSyAh7YB9Lya7AoHlQ7JMIt/m12o9LI1BFHsXnphW1vELtDibbvsZhDFvAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:57:27.301048Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.4448","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:650e48915afa5eda07dbab182882816afd72c3a5ef5bed2392cb24d17661327d","sha256:bdafc852ee214017bed90732fc01985fde61705a134f25b856b40000a915477e"],"state_sha256":"80050dd00aeff6f53bce77aea32d62eb1e98b6c2eff8aefb008b7adfd8e2db7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UZSAA00oIUoZ7eyoZdeM4+SMkIJ/0IYjlf4jHuDOiyT1EWCBxmr83fcTneH9fTByZpDKYH1shinQBqLipS13Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T18:35:50.256663Z","bundle_sha256":"a1c1e4bdf4c1e603aae0356dcd63d6fe1be43de878ebea4511fd86139f8abb17"}}