{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:CVRTRBNHPQ2NP6BCRVWHZJT32W","short_pith_number":"pith:CVRTRBNH","canonical_record":{"source":{"id":"1402.6884","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-02-27T12:24:56Z","cross_cats_sorted":[],"title_canon_sha256":"23032f6959a332e4a6a5c81f6543b142885391390899c1644c9a853af33a9f77","abstract_canon_sha256":"92a2fcf59bde3a03d3bfd52e854451c505ac57d68d1d7e775165dac2f03ef3e4"},"schema_version":"1.0"},"canonical_sha256":"15633885a77c34d7f8228d6c7ca67bd5a48fc8f22b99f09616d7b81cdfa9a93b","source":{"kind":"arxiv","id":"1402.6884","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.6884","created_at":"2026-05-18T02:57:36Z"},{"alias_kind":"arxiv_version","alias_value":"1402.6884v1","created_at":"2026-05-18T02:57:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.6884","created_at":"2026-05-18T02:57:36Z"},{"alias_kind":"pith_short_12","alias_value":"CVRTRBNHPQ2N","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"CVRTRBNHPQ2NP6BC","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"CVRTRBNH","created_at":"2026-05-18T12:28:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:CVRTRBNHPQ2NP6BCRVWHZJT32W","target":"record","payload":{"canonical_record":{"source":{"id":"1402.6884","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-02-27T12:24:56Z","cross_cats_sorted":[],"title_canon_sha256":"23032f6959a332e4a6a5c81f6543b142885391390899c1644c9a853af33a9f77","abstract_canon_sha256":"92a2fcf59bde3a03d3bfd52e854451c505ac57d68d1d7e775165dac2f03ef3e4"},"schema_version":"1.0"},"canonical_sha256":"15633885a77c34d7f8228d6c7ca67bd5a48fc8f22b99f09616d7b81cdfa9a93b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:36.682143Z","signature_b64":"8P55hIB5mJRR71tyun/EPq4VonBYAomKOFJsiczLnda6ldsqBpLQzy4WrCs9pcrL9/1/8/Q+Qeffx6NB6ZCIAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15633885a77c34d7f8228d6c7ca67bd5a48fc8f22b99f09616d7b81cdfa9a93b","last_reissued_at":"2026-05-18T02:57:36.681405Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:36.681405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.6884","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":"2026-05-18T02:57:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c9QxACjuDtWbJkUcTjzf22EFAD8pqBnUFyn+vqRVRmETTMxtaPBb2WPU6QdSgEEsJrH0DOmTs+U4tJKjwqYjDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T17:36:15.718289Z"},"content_sha256":"e013f7add81485450612aa66cfb33633509d1a9f6405f1a8484cac2ebaeb88f7","schema_version":"1.0","event_id":"sha256:e013f7add81485450612aa66cfb33633509d1a9f6405f1a8484cac2ebaeb88f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:CVRTRBNHPQ2NP6BCRVWHZJT32W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Early Attempts at Active Atmospheric Calibration with H.E.S.S. Phase 1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Cameron Rulten, Gerd Puhlhofer, Sam Nolan","submitted_at":"2014-02-27T12:24:56Z","abstract_excerpt":"Using data derived from the H.E.S.S. Phase 1 telescope system and a Ceilometer facility on site, a method of correcting for changing atmospheric quality based on reconstructed shower parameters is presented. The method was applied to data from the active galactic nucleus PKS 2155-304, taken during August and September 2004 when the quality of the atmosphere at the site was highly variable. Corrected and uncorrected fluxes are shown, and the method is discussed as a first step towards a more complete atmospheric calibration."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.6884","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":"2026-05-18T02:57:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WFCiw+Zy+fMqVF9HcxSjGo7wpWY8eQmzDaDk1w90BX/NUyNfh9ryTZHHmsfM42yNBWu6o0lXgG7uAvQeKVviDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T17:36:15.718643Z"},"content_sha256":"c4c50fd1e1d1be952b1479fbc1425be2ee83ea26d9cad00b89c71d829fb95573","schema_version":"1.0","event_id":"sha256:c4c50fd1e1d1be952b1479fbc1425be2ee83ea26d9cad00b89c71d829fb95573"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CVRTRBNHPQ2NP6BCRVWHZJT32W/bundle.json","state_url":"https://pith.science/pith/CVRTRBNHPQ2NP6BCRVWHZJT32W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CVRTRBNHPQ2NP6BCRVWHZJT32W/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":"2026-05-19T17:36:15Z","links":{"resolver":"https://pith.science/pith/CVRTRBNHPQ2NP6BCRVWHZJT32W","bundle":"https://pith.science/pith/CVRTRBNHPQ2NP6BCRVWHZJT32W/bundle.json","state":"https://pith.science/pith/CVRTRBNHPQ2NP6BCRVWHZJT32W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CVRTRBNHPQ2NP6BCRVWHZJT32W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:CVRTRBNHPQ2NP6BCRVWHZJT32W","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":"92a2fcf59bde3a03d3bfd52e854451c505ac57d68d1d7e775165dac2f03ef3e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-02-27T12:24:56Z","title_canon_sha256":"23032f6959a332e4a6a5c81f6543b142885391390899c1644c9a853af33a9f77"},"schema_version":"1.0","source":{"id":"1402.6884","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.6884","created_at":"2026-05-18T02:57:36Z"},{"alias_kind":"arxiv_version","alias_value":"1402.6884v1","created_at":"2026-05-18T02:57:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.6884","created_at":"2026-05-18T02:57:36Z"},{"alias_kind":"pith_short_12","alias_value":"CVRTRBNHPQ2N","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"CVRTRBNHPQ2NP6BC","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"CVRTRBNH","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:c4c50fd1e1d1be952b1479fbc1425be2ee83ea26d9cad00b89c71d829fb95573","target":"graph","created_at":"2026-05-18T02:57:36Z","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":"Using data derived from the H.E.S.S. Phase 1 telescope system and a Ceilometer facility on site, a method of correcting for changing atmospheric quality based on reconstructed shower parameters is presented. The method was applied to data from the active galactic nucleus PKS 2155-304, taken during August and September 2004 when the quality of the atmosphere at the site was highly variable. Corrected and uncorrected fluxes are shown, and the method is discussed as a first step towards a more complete atmospheric calibration.","authors_text":"Cameron Rulten, Gerd Puhlhofer, Sam Nolan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-02-27T12:24:56Z","title":"Early Attempts at Active Atmospheric Calibration with H.E.S.S. Phase 1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.6884","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:e013f7add81485450612aa66cfb33633509d1a9f6405f1a8484cac2ebaeb88f7","target":"record","created_at":"2026-05-18T02:57:36Z","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":"92a2fcf59bde3a03d3bfd52e854451c505ac57d68d1d7e775165dac2f03ef3e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-02-27T12:24:56Z","title_canon_sha256":"23032f6959a332e4a6a5c81f6543b142885391390899c1644c9a853af33a9f77"},"schema_version":"1.0","source":{"id":"1402.6884","kind":"arxiv","version":1}},"canonical_sha256":"15633885a77c34d7f8228d6c7ca67bd5a48fc8f22b99f09616d7b81cdfa9a93b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15633885a77c34d7f8228d6c7ca67bd5a48fc8f22b99f09616d7b81cdfa9a93b","first_computed_at":"2026-05-18T02:57:36.681405Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:36.681405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8P55hIB5mJRR71tyun/EPq4VonBYAomKOFJsiczLnda6ldsqBpLQzy4WrCs9pcrL9/1/8/Q+Qeffx6NB6ZCIAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:36.682143Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.6884","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e013f7add81485450612aa66cfb33633509d1a9f6405f1a8484cac2ebaeb88f7","sha256:c4c50fd1e1d1be952b1479fbc1425be2ee83ea26d9cad00b89c71d829fb95573"],"state_sha256":"7f17c1c79cbd69c325aaa6db15cca2b438dabc99f90860c5e2c464f04f119500"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6EU+9vIXWMpjK7d1cg7v4MJ2m5npE4cgs2J1C3i6qkj+qt00XnE+OMEriwnpIEnNWB8f/pDtnJTHpQ2B/i/pAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T17:36:15.720558Z","bundle_sha256":"d396f1451c66255ecd691b76ccbac9c22694005cdd283545eca4a90c0c24c984"}}