{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:TNGMXC3KEGOJUGNBDXVVSPSSZG","short_pith_number":"pith:TNGMXC3K","canonical_record":{"source":{"id":"1308.5237","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-08-23T20:16:50Z","cross_cats_sorted":[],"title_canon_sha256":"29eb669212f66338e59160150b0a907f8cf38e75793b570eb81f6089ff99bf2b","abstract_canon_sha256":"9121837cf5cd8f44bf94769d08811c616b6614303ec53aabd7be8748a6e7ae99"},"schema_version":"1.0"},"canonical_sha256":"9b4ccb8b6a219c9a19a11deb593e52c995c29452b4fc174a2040a1ee99c75b16","source":{"kind":"arxiv","id":"1308.5237","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.5237","created_at":"2026-05-18T03:15:07Z"},{"alias_kind":"arxiv_version","alias_value":"1308.5237v1","created_at":"2026-05-18T03:15:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.5237","created_at":"2026-05-18T03:15:07Z"},{"alias_kind":"pith_short_12","alias_value":"TNGMXC3KEGOJ","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TNGMXC3KEGOJUGNB","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TNGMXC3K","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:TNGMXC3KEGOJUGNBDXVVSPSSZG","target":"record","payload":{"canonical_record":{"source":{"id":"1308.5237","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-08-23T20:16:50Z","cross_cats_sorted":[],"title_canon_sha256":"29eb669212f66338e59160150b0a907f8cf38e75793b570eb81f6089ff99bf2b","abstract_canon_sha256":"9121837cf5cd8f44bf94769d08811c616b6614303ec53aabd7be8748a6e7ae99"},"schema_version":"1.0"},"canonical_sha256":"9b4ccb8b6a219c9a19a11deb593e52c995c29452b4fc174a2040a1ee99c75b16","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:15:07.350774Z","signature_b64":"l3okmI5CDKKig+lqlCvOpEbXwUWIHtZuZAxuAl6szmlxJcFxF4mm/OC/Lo7NG2O1NzoSQT3kAJTW4q4kY8qMBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b4ccb8b6a219c9a19a11deb593e52c995c29452b4fc174a2040a1ee99c75b16","last_reissued_at":"2026-05-18T03:15:07.349969Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:15:07.349969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.5237","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":"2026-05-18T03:15:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xKxdUtOdsKz1b5vYOB3gqT3k8vHrzXkXQgxmsANZcVOva+UxhSpYycqmnnr1t1d47CoOMPRiRCzKFc4Y1+jvAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:15:11.141905Z"},"content_sha256":"1596d5d469a4b0df01f3d5d4149a59fd438da5b557d612aef6fd3dc89348c7d2","schema_version":"1.0","event_id":"sha256:1596d5d469a4b0df01f3d5d4149a59fd438da5b557d612aef6fd3dc89348c7d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:TNGMXC3KEGOJUGNBDXVVSPSSZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Processing Color in Astronomical Imagery","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Joseph DePasquale, Kimberly K. Arcand, Megan Watzke, Olivia Smarr, Travis Rector, Zoltan G. Levay","submitted_at":"2013-08-23T20:16:50Z","abstract_excerpt":"Every year, hundreds of images from telescopes on the ground and in space are released to the public, making their way into popular culture through everything from computer screens to postage stamps. These images span the entire electromagnetic spectrum from radio waves to infrared light to X-rays and gamma rays, a majority of which is undetectable to the human eye without technology. Once these data are collected, one or more specialists must process the data to create an image. Therefore, the creation of astronomical imagery involves a series of choices. How do these choices affect the compr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.5237","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":"2026-05-18T03:15:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YJFlEd2ssCDJxLeURPss0jQdUe6f93AZB7HYCFeW8oESJcUPFxCtXcWDvbbHf/W/1O/HicH5Aspa/zkjNz0NCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:15:11.142533Z"},"content_sha256":"86b1c91b7635f41327518dde3868e34c9059bf5b7bd615a3cce208e52d12faee","schema_version":"1.0","event_id":"sha256:86b1c91b7635f41327518dde3868e34c9059bf5b7bd615a3cce208e52d12faee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TNGMXC3KEGOJUGNBDXVVSPSSZG/bundle.json","state_url":"https://pith.science/pith/TNGMXC3KEGOJUGNBDXVVSPSSZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TNGMXC3KEGOJUGNBDXVVSPSSZG/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":"2026-05-27T21:15:11Z","links":{"resolver":"https://pith.science/pith/TNGMXC3KEGOJUGNBDXVVSPSSZG","bundle":"https://pith.science/pith/TNGMXC3KEGOJUGNBDXVVSPSSZG/bundle.json","state":"https://pith.science/pith/TNGMXC3KEGOJUGNBDXVVSPSSZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TNGMXC3KEGOJUGNBDXVVSPSSZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TNGMXC3KEGOJUGNBDXVVSPSSZG","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":"9121837cf5cd8f44bf94769d08811c616b6614303ec53aabd7be8748a6e7ae99","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-08-23T20:16:50Z","title_canon_sha256":"29eb669212f66338e59160150b0a907f8cf38e75793b570eb81f6089ff99bf2b"},"schema_version":"1.0","source":{"id":"1308.5237","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.5237","created_at":"2026-05-18T03:15:07Z"},{"alias_kind":"arxiv_version","alias_value":"1308.5237v1","created_at":"2026-05-18T03:15:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.5237","created_at":"2026-05-18T03:15:07Z"},{"alias_kind":"pith_short_12","alias_value":"TNGMXC3KEGOJ","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TNGMXC3KEGOJUGNB","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TNGMXC3K","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:86b1c91b7635f41327518dde3868e34c9059bf5b7bd615a3cce208e52d12faee","target":"graph","created_at":"2026-05-18T03:15:07Z","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":"Every year, hundreds of images from telescopes on the ground and in space are released to the public, making their way into popular culture through everything from computer screens to postage stamps. These images span the entire electromagnetic spectrum from radio waves to infrared light to X-rays and gamma rays, a majority of which is undetectable to the human eye without technology. Once these data are collected, one or more specialists must process the data to create an image. Therefore, the creation of astronomical imagery involves a series of choices. How do these choices affect the compr","authors_text":"Joseph DePasquale, Kimberly K. Arcand, Megan Watzke, Olivia Smarr, Travis Rector, Zoltan G. Levay","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-08-23T20:16:50Z","title":"Processing Color in Astronomical Imagery"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.5237","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":"sha256:1596d5d469a4b0df01f3d5d4149a59fd438da5b557d612aef6fd3dc89348c7d2","target":"record","created_at":"2026-05-18T03:15:07Z","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":"9121837cf5cd8f44bf94769d08811c616b6614303ec53aabd7be8748a6e7ae99","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-08-23T20:16:50Z","title_canon_sha256":"29eb669212f66338e59160150b0a907f8cf38e75793b570eb81f6089ff99bf2b"},"schema_version":"1.0","source":{"id":"1308.5237","kind":"arxiv","version":1}},"canonical_sha256":"9b4ccb8b6a219c9a19a11deb593e52c995c29452b4fc174a2040a1ee99c75b16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b4ccb8b6a219c9a19a11deb593e52c995c29452b4fc174a2040a1ee99c75b16","first_computed_at":"2026-05-18T03:15:07.349969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:15:07.349969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l3okmI5CDKKig+lqlCvOpEbXwUWIHtZuZAxuAl6szmlxJcFxF4mm/OC/Lo7NG2O1NzoSQT3kAJTW4q4kY8qMBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:15:07.350774Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.5237","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1596d5d469a4b0df01f3d5d4149a59fd438da5b557d612aef6fd3dc89348c7d2","sha256:86b1c91b7635f41327518dde3868e34c9059bf5b7bd615a3cce208e52d12faee"],"state_sha256":"f5bf91ad6215340616ce40894fcf49abf4dcc54b73d84ab90b9ad2649ad8b21d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"11ywUFuqLz6lXZdwfzvfZVP/P/bKwBLZ2ojNwVefc5dNB2T2qhMD9y93qpGjStV/hWzlvzCHKE7Idx3DfDyJAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:15:11.146283Z","bundle_sha256":"734c434daa823ad71012a738d029226873ebd69f0adbe614f8a09a6f0bb75741"}}