{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:7NFMXW7CAJ3ZYX6F6J7BPWJETO","short_pith_number":"pith:7NFMXW7C","canonical_record":{"source":{"id":"1205.2003","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-05-09T14:52:01Z","cross_cats_sorted":["physics.ao-ph"],"title_canon_sha256":"457b185b5ba34ff280889cfcdad0a1b063d94545b215925e81e5b64ddf47547d","abstract_canon_sha256":"ba9e2873d0e184aa913a94d1b256571c56cb8ddb373f7901bf9cd8f68b66ef19"},"schema_version":"1.0"},"canonical_sha256":"fb4acbdbe202779c5fc5f27e17d9249bb181d9bf6c5c0c2ae9838d770f41741b","source":{"kind":"arxiv","id":"1205.2003","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2003","created_at":"2026-05-18T01:57:36Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2003v1","created_at":"2026-05-18T01:57:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2003","created_at":"2026-05-18T01:57:36Z"},{"alias_kind":"pith_short_12","alias_value":"7NFMXW7CAJ3Z","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7NFMXW7CAJ3ZYX6F","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7NFMXW7C","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:7NFMXW7CAJ3ZYX6F6J7BPWJETO","target":"record","payload":{"canonical_record":{"source":{"id":"1205.2003","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-05-09T14:52:01Z","cross_cats_sorted":["physics.ao-ph"],"title_canon_sha256":"457b185b5ba34ff280889cfcdad0a1b063d94545b215925e81e5b64ddf47547d","abstract_canon_sha256":"ba9e2873d0e184aa913a94d1b256571c56cb8ddb373f7901bf9cd8f68b66ef19"},"schema_version":"1.0"},"canonical_sha256":"fb4acbdbe202779c5fc5f27e17d9249bb181d9bf6c5c0c2ae9838d770f41741b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:36.056216Z","signature_b64":"sj/nBmYwVLmfPKz1IjYsOUN5+86BmL/WI5zJ8VK0glO0ltnYz6ERUBfxny0HA01YzljE9mErhfVqlERqCAhfAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb4acbdbe202779c5fc5f27e17d9249bb181d9bf6c5c0c2ae9838d770f41741b","last_reissued_at":"2026-05-18T01:57:36.055399Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:36.055399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.2003","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":"2026-05-18T01:57:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7huZlkghpg79AmtgEPg2XHWLR9SxetOURMmi3ixFH2qVjMg4P1GpLsu8wzvTSKeLJRXN6wJYBr2v0O18nzioBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:52:44.964260Z"},"content_sha256":"1ecffa4d9de83649f6310ef1f76409d69ba4c97777940b429096fa12546553c5","schema_version":"1.0","event_id":"sha256:1ecffa4d9de83649f6310ef1f76409d69ba4c97777940b429096fa12546553c5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:7NFMXW7CAJ3ZYX6F6J7BPWJETO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An atmospheric radiation model for Cerro Paranal. I. The optical spectral range","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ao-ph"],"primary_cat":"astro-ph.IM","authors_text":"A. M. Jones, C. Szyszka, J. Vinther, M. Barden, S. Kimeswenger, S. Noll, W. Kausch","submitted_at":"2012-05-09T14:52:01Z","abstract_excerpt":"The Earth's atmosphere affects ground-based astronomical observations. Scattering, absorption, and radiation processes deteriorate the signal-to-noise ratio of the data received. For scheduling astronomical observations it is, therefore, important to accurately estimate the wavelength-dependent effect of the Earth's atmosphere on the observed flux. In order to increase the accuracy of the exposure time calculator of the European Southern Observatory's (ESO) Very Large Telescope (VLT) at Cerro Paranal, an atmospheric model was developed as part of the Austrian ESO In-Kind contribution. It inclu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2003","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":"2026-05-18T01:57:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l7jjAkpiH6fTuPy+1jNHE6bqQlEo/j+yFgsIlFMtQa1gQQq7BT2Mt0lHV4zRIWD0Z+Bv2i3S+Yolln8dcnWJBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:52:44.964905Z"},"content_sha256":"abcd6d3abac6c1cc99f4d2dd97a7bee6ce1cd8884b18c3a7d9851368aead54a5","schema_version":"1.0","event_id":"sha256:abcd6d3abac6c1cc99f4d2dd97a7bee6ce1cd8884b18c3a7d9851368aead54a5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7NFMXW7CAJ3ZYX6F6J7BPWJETO/bundle.json","state_url":"https://pith.science/pith/7NFMXW7CAJ3ZYX6F6J7BPWJETO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7NFMXW7CAJ3ZYX6F6J7BPWJETO/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":"2026-05-30T11:52:44Z","links":{"resolver":"https://pith.science/pith/7NFMXW7CAJ3ZYX6F6J7BPWJETO","bundle":"https://pith.science/pith/7NFMXW7CAJ3ZYX6F6J7BPWJETO/bundle.json","state":"https://pith.science/pith/7NFMXW7CAJ3ZYX6F6J7BPWJETO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7NFMXW7CAJ3ZYX6F6J7BPWJETO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7NFMXW7CAJ3ZYX6F6J7BPWJETO","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":"ba9e2873d0e184aa913a94d1b256571c56cb8ddb373f7901bf9cd8f68b66ef19","cross_cats_sorted":["physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-05-09T14:52:01Z","title_canon_sha256":"457b185b5ba34ff280889cfcdad0a1b063d94545b215925e81e5b64ddf47547d"},"schema_version":"1.0","source":{"id":"1205.2003","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2003","created_at":"2026-05-18T01:57:36Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2003v1","created_at":"2026-05-18T01:57:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2003","created_at":"2026-05-18T01:57:36Z"},{"alias_kind":"pith_short_12","alias_value":"7NFMXW7CAJ3Z","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7NFMXW7CAJ3ZYX6F","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7NFMXW7C","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:abcd6d3abac6c1cc99f4d2dd97a7bee6ce1cd8884b18c3a7d9851368aead54a5","target":"graph","created_at":"2026-05-18T01:57:36Z","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 Earth's atmosphere affects ground-based astronomical observations. Scattering, absorption, and radiation processes deteriorate the signal-to-noise ratio of the data received. For scheduling astronomical observations it is, therefore, important to accurately estimate the wavelength-dependent effect of the Earth's atmosphere on the observed flux. In order to increase the accuracy of the exposure time calculator of the European Southern Observatory's (ESO) Very Large Telescope (VLT) at Cerro Paranal, an atmospheric model was developed as part of the Austrian ESO In-Kind contribution. It inclu","authors_text":"A. M. Jones, C. Szyszka, J. Vinther, M. Barden, S. Kimeswenger, S. Noll, W. Kausch","cross_cats":["physics.ao-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-05-09T14:52:01Z","title":"An atmospheric radiation model for Cerro Paranal. I. The optical spectral range"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2003","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":"sha256:1ecffa4d9de83649f6310ef1f76409d69ba4c97777940b429096fa12546553c5","target":"record","created_at":"2026-05-18T01:57:36Z","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":"ba9e2873d0e184aa913a94d1b256571c56cb8ddb373f7901bf9cd8f68b66ef19","cross_cats_sorted":["physics.ao-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-05-09T14:52:01Z","title_canon_sha256":"457b185b5ba34ff280889cfcdad0a1b063d94545b215925e81e5b64ddf47547d"},"schema_version":"1.0","source":{"id":"1205.2003","kind":"arxiv","version":1}},"canonical_sha256":"fb4acbdbe202779c5fc5f27e17d9249bb181d9bf6c5c0c2ae9838d770f41741b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fb4acbdbe202779c5fc5f27e17d9249bb181d9bf6c5c0c2ae9838d770f41741b","first_computed_at":"2026-05-18T01:57:36.055399Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:36.055399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sj/nBmYwVLmfPKz1IjYsOUN5+86BmL/WI5zJ8VK0glO0ltnYz6ERUBfxny0HA01YzljE9mErhfVqlERqCAhfAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:36.056216Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.2003","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ecffa4d9de83649f6310ef1f76409d69ba4c97777940b429096fa12546553c5","sha256:abcd6d3abac6c1cc99f4d2dd97a7bee6ce1cd8884b18c3a7d9851368aead54a5"],"state_sha256":"780782e902c8473d28bf56c3710559877a8067b7b08490c6faac34d488e1c75e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2DN/+scqseEXoZI1Au7oBfteaYvhcRLSYmWwQ3gw8coUlkT3ROykSoBaOJowyUIFuwMW2W88bSgoZrqJzkQsCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T11:52:44.967681Z","bundle_sha256":"5176b65b0ffc0e13d3338187a0d018ecc69be8128a657f604f29e7ff68b1bc88"}}