{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:O5IMHHG5V6KGRXBC4J6RWXHWUF","short_pith_number":"pith:O5IMHHG5","canonical_record":{"source":{"id":"1309.4816","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-18T22:57:14Z","cross_cats_sorted":[],"title_canon_sha256":"0a5aa3945bf8aef8509ecfd3e2fe451604dcfb0533a8babfb98282a906305cca","abstract_canon_sha256":"38ffb2017c69871dc618f8a9ab79749a1e6798111abc38e3e4ecad271b292c35"},"schema_version":"1.0"},"canonical_sha256":"7750c39cddaf9468dc22e27d1b5cf6a15db63d74a7038b15654855fa1cf31dfe","source":{"kind":"arxiv","id":"1309.4816","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4816","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4816v1","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4816","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"pith_short_12","alias_value":"O5IMHHG5V6KG","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"O5IMHHG5V6KGRXBC","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"O5IMHHG5","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:O5IMHHG5V6KGRXBC4J6RWXHWUF","target":"record","payload":{"canonical_record":{"source":{"id":"1309.4816","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-18T22:57:14Z","cross_cats_sorted":[],"title_canon_sha256":"0a5aa3945bf8aef8509ecfd3e2fe451604dcfb0533a8babfb98282a906305cca","abstract_canon_sha256":"38ffb2017c69871dc618f8a9ab79749a1e6798111abc38e3e4ecad271b292c35"},"schema_version":"1.0"},"canonical_sha256":"7750c39cddaf9468dc22e27d1b5cf6a15db63d74a7038b15654855fa1cf31dfe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:35.683181Z","signature_b64":"frHBk3hh4CooDTMl5iroFtZQo5YSSWDneuWJGkygW5Yh8VOjEXZLgOfZr34c0nCFsKMv29z1xbjlFbYUMdSGCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7750c39cddaf9468dc22e27d1b5cf6a15db63d74a7038b15654855fa1cf31dfe","last_reissued_at":"2026-05-18T01:47:35.682668Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:35.682668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.4816","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":"2026-05-18T01:47:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6qPYG7Z8Ok8Wot9oh1eoaa+fH09g/MmsnBiKSioGr0PPQdJJ/Z+yeZifQNtD2MZdu41OZzfWHDrdXVNcs525Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:34:44.108174Z"},"content_sha256":"81423196460237be2100cae2945d63cb0f1ab7499d5d0d4c004c99e8222a65cb","schema_version":"1.0","event_id":"sha256:81423196460237be2100cae2945d63cb0f1ab7499d5d0d4c004c99e8222a65cb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:O5IMHHG5V6KGRXBC4J6RWXHWUF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The use and calibration of read-out streaks to increase the dynamic range of the Swift Ultraviolet/Optical Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A.A. Breeveld, A.P. Beardmore, B. Hancock, F.E. Marshall, M. Carter, M. De Pasquale, M.H. Siegel, M.J. Page, M. Symeonidis, N.P.M. Kuin, P.J. Smith, P.W.A. Roming, S. Oates, S.T. Holland, V. Yershov","submitted_at":"2013-09-18T22:57:14Z","abstract_excerpt":"The dynamic range of photon counting micro-channel-plate (MCP) intensified charged-coupled device (CCD) instruments such as the Swift Ultraviolet/Optical Telescope (UVOT) and the XMM-Newton Optical Monitor (XMM-OM) is limited at the bright end by coincidence loss, the superposition of multiple photons in the individual frames recorded by the CCD. Photons which arrive during the brief period in which the image frame is transferred for read out of the CCD are displaced in the transfer direction in the recorded images. For sufficiently bright sources, these displaced counts form read-out streaks."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4816","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":"2026-05-18T01:47:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gotXuo+dSaHR0F9TgF4iQ3z//yaLuHcjuMg7+AQ1zp0ckYNET/sRkLAbL98vR9GjYQNLQa/E2uQKXKLN/ToIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:34:44.108638Z"},"content_sha256":"45e6e26ff5db23dd92d8aafbc3c4b49175675bea040fe154caf40e9da368835f","schema_version":"1.0","event_id":"sha256:45e6e26ff5db23dd92d8aafbc3c4b49175675bea040fe154caf40e9da368835f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O5IMHHG5V6KGRXBC4J6RWXHWUF/bundle.json","state_url":"https://pith.science/pith/O5IMHHG5V6KGRXBC4J6RWXHWUF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O5IMHHG5V6KGRXBC4J6RWXHWUF/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":"2026-06-04T08:34:44Z","links":{"resolver":"https://pith.science/pith/O5IMHHG5V6KGRXBC4J6RWXHWUF","bundle":"https://pith.science/pith/O5IMHHG5V6KGRXBC4J6RWXHWUF/bundle.json","state":"https://pith.science/pith/O5IMHHG5V6KGRXBC4J6RWXHWUF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O5IMHHG5V6KGRXBC4J6RWXHWUF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:O5IMHHG5V6KGRXBC4J6RWXHWUF","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":"38ffb2017c69871dc618f8a9ab79749a1e6798111abc38e3e4ecad271b292c35","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-18T22:57:14Z","title_canon_sha256":"0a5aa3945bf8aef8509ecfd3e2fe451604dcfb0533a8babfb98282a906305cca"},"schema_version":"1.0","source":{"id":"1309.4816","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.4816","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"arxiv_version","alias_value":"1309.4816v1","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.4816","created_at":"2026-05-18T01:47:35Z"},{"alias_kind":"pith_short_12","alias_value":"O5IMHHG5V6KG","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"O5IMHHG5V6KGRXBC","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"O5IMHHG5","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:45e6e26ff5db23dd92d8aafbc3c4b49175675bea040fe154caf40e9da368835f","target":"graph","created_at":"2026-05-18T01:47:35Z","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 dynamic range of photon counting micro-channel-plate (MCP) intensified charged-coupled device (CCD) instruments such as the Swift Ultraviolet/Optical Telescope (UVOT) and the XMM-Newton Optical Monitor (XMM-OM) is limited at the bright end by coincidence loss, the superposition of multiple photons in the individual frames recorded by the CCD. Photons which arrive during the brief period in which the image frame is transferred for read out of the CCD are displaced in the transfer direction in the recorded images. For sufficiently bright sources, these displaced counts form read-out streaks.","authors_text":"A.A. Breeveld, A.P. Beardmore, B. Hancock, F.E. Marshall, M. Carter, M. De Pasquale, M.H. Siegel, M.J. Page, M. Symeonidis, N.P.M. Kuin, P.J. Smith, P.W.A. Roming, S. Oates, S.T. Holland, V. Yershov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-18T22:57:14Z","title":"The use and calibration of read-out streaks to increase the dynamic range of the Swift Ultraviolet/Optical Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4816","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":"sha256:81423196460237be2100cae2945d63cb0f1ab7499d5d0d4c004c99e8222a65cb","target":"record","created_at":"2026-05-18T01:47:35Z","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":"38ffb2017c69871dc618f8a9ab79749a1e6798111abc38e3e4ecad271b292c35","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-09-18T22:57:14Z","title_canon_sha256":"0a5aa3945bf8aef8509ecfd3e2fe451604dcfb0533a8babfb98282a906305cca"},"schema_version":"1.0","source":{"id":"1309.4816","kind":"arxiv","version":1}},"canonical_sha256":"7750c39cddaf9468dc22e27d1b5cf6a15db63d74a7038b15654855fa1cf31dfe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7750c39cddaf9468dc22e27d1b5cf6a15db63d74a7038b15654855fa1cf31dfe","first_computed_at":"2026-05-18T01:47:35.682668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:35.682668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"frHBk3hh4CooDTMl5iroFtZQo5YSSWDneuWJGkygW5Yh8VOjEXZLgOfZr34c0nCFsKMv29z1xbjlFbYUMdSGCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:35.683181Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.4816","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81423196460237be2100cae2945d63cb0f1ab7499d5d0d4c004c99e8222a65cb","sha256:45e6e26ff5db23dd92d8aafbc3c4b49175675bea040fe154caf40e9da368835f"],"state_sha256":"4efbf335c2722b3a7a83783a06c3fb926d4db0188170ef0158fd26a8bf8c8ce4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KmDSVUIEH4I9apgHSkoQhiqyY6WU7ZL5j2WlZXwFVt0u2sQXLk0t4pOSfn+QdKdOeOAdUMgdRuJw//Sqsw07AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T08:34:44.111587Z","bundle_sha256":"fc7d892b7109e1fc69eb69e92b1401511a6aed1bc663cc64d33f30e4a59468a0"}}