{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:NNKAVRJPFLJSLA4NC76PRUTWLC","short_pith_number":"pith:NNKAVRJP","canonical_record":{"source":{"id":"1406.5109","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-19T16:54:14Z","cross_cats_sorted":[],"title_canon_sha256":"fe11dc1df0633cc3fc1cdd5d4585835d63828ead80dd949eda9648000b22cfaf","abstract_canon_sha256":"faf574e4db48801e42757edc0d767c32d7747c10a3cb838cb049f3ecf983fa00"},"schema_version":"1.0"},"canonical_sha256":"6b540ac52f2ad325838d17fcf8d27658bb1c0d3ba3d16925ab56b35187f291db","source":{"kind":"arxiv","id":"1406.5109","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.5109","created_at":"2026-05-18T01:42:52Z"},{"alias_kind":"arxiv_version","alias_value":"1406.5109v1","created_at":"2026-05-18T01:42:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.5109","created_at":"2026-05-18T01:42:52Z"},{"alias_kind":"pith_short_12","alias_value":"NNKAVRJPFLJS","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NNKAVRJPFLJSLA4N","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NNKAVRJP","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:NNKAVRJPFLJSLA4NC76PRUTWLC","target":"record","payload":{"canonical_record":{"source":{"id":"1406.5109","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-19T16:54:14Z","cross_cats_sorted":[],"title_canon_sha256":"fe11dc1df0633cc3fc1cdd5d4585835d63828ead80dd949eda9648000b22cfaf","abstract_canon_sha256":"faf574e4db48801e42757edc0d767c32d7747c10a3cb838cb049f3ecf983fa00"},"schema_version":"1.0"},"canonical_sha256":"6b540ac52f2ad325838d17fcf8d27658bb1c0d3ba3d16925ab56b35187f291db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:52.943548Z","signature_b64":"zXNxZSABT6mNlHfwEE7Vt38nN3tD+Q3yUpl9kkOxU3uzyDJugeY28JQkvTUuEphZmqjoaqRauo8SYxHdQhptAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6b540ac52f2ad325838d17fcf8d27658bb1c0d3ba3d16925ab56b35187f291db","last_reissued_at":"2026-05-18T01:42:52.942867Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:52.942867Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.5109","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":"2026-05-18T01:42:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1S5evI9PZkYCn9Rpu7rXJQEaWvI8NDU1Vw0nnU0ZW1qeMmNM5b04jWY+FDcFxcg4uOZyWwnSh+kHuqacJbIpCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T15:33:05.201205Z"},"content_sha256":"71a9d34e4d8bc159dfbf63dacf79815e4e5055aadf4eb6da253cc89aae29a47d","schema_version":"1.0","event_id":"sha256:71a9d34e4d8bc159dfbf63dacf79815e4e5055aadf4eb6da253cc89aae29a47d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:NNKAVRJPFLJSLA4NC76PRUTWLC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automatic data analysis for Sky Brightness Monitor","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Elmhamdi, A. S. Kordi, H.A. Al-trabulsy, M. Y. Zhao, S. Q. Liu, T. F. Song, X. F. Zhang, Y. D. Shen, Y. H. Miao, Y. Liu, Z. J. Tian","submitted_at":"2014-06-19T16:54:14Z","abstract_excerpt":"The Sky Brightness Monitor (SBM) is an important instrument to measure the brightness level for the sky condition, which is a critical parameter for judging a site for solar coronal observations. In this paper we present an automatic method for the processing of SBM data in large quantity, which can separate the regions of the Sun and the nearby sky as well as recognize the regions of the supporting arms in the field of view. These processes are implemented on the data acquired by more than one SBM instruments during our site survey project in western China. An analysis applying the result fro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.5109","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":"2026-05-18T01:42:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jMSObOhtCXrPKKf9PEde3ecFEvbEwdsbkfKEHHU4guFTcrwLj3Y8ULXOP61AmmdgE5jaDJynSnlkq4oRpvdPCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T15:33:05.201954Z"},"content_sha256":"de0ae3f76aa91fe01501ae8cfbc7555a8c17e8dcb6d3bb63b24fea036cb0da69","schema_version":"1.0","event_id":"sha256:de0ae3f76aa91fe01501ae8cfbc7555a8c17e8dcb6d3bb63b24fea036cb0da69"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NNKAVRJPFLJSLA4NC76PRUTWLC/bundle.json","state_url":"https://pith.science/pith/NNKAVRJPFLJSLA4NC76PRUTWLC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NNKAVRJPFLJSLA4NC76PRUTWLC/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":"2026-05-23T15:33:05Z","links":{"resolver":"https://pith.science/pith/NNKAVRJPFLJSLA4NC76PRUTWLC","bundle":"https://pith.science/pith/NNKAVRJPFLJSLA4NC76PRUTWLC/bundle.json","state":"https://pith.science/pith/NNKAVRJPFLJSLA4NC76PRUTWLC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NNKAVRJPFLJSLA4NC76PRUTWLC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:NNKAVRJPFLJSLA4NC76PRUTWLC","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":"faf574e4db48801e42757edc0d767c32d7747c10a3cb838cb049f3ecf983fa00","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-19T16:54:14Z","title_canon_sha256":"fe11dc1df0633cc3fc1cdd5d4585835d63828ead80dd949eda9648000b22cfaf"},"schema_version":"1.0","source":{"id":"1406.5109","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.5109","created_at":"2026-05-18T01:42:52Z"},{"alias_kind":"arxiv_version","alias_value":"1406.5109v1","created_at":"2026-05-18T01:42:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.5109","created_at":"2026-05-18T01:42:52Z"},{"alias_kind":"pith_short_12","alias_value":"NNKAVRJPFLJS","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"NNKAVRJPFLJSLA4N","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"NNKAVRJP","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:de0ae3f76aa91fe01501ae8cfbc7555a8c17e8dcb6d3bb63b24fea036cb0da69","target":"graph","created_at":"2026-05-18T01:42:52Z","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 Sky Brightness Monitor (SBM) is an important instrument to measure the brightness level for the sky condition, which is a critical parameter for judging a site for solar coronal observations. In this paper we present an automatic method for the processing of SBM data in large quantity, which can separate the regions of the Sun and the nearby sky as well as recognize the regions of the supporting arms in the field of view. These processes are implemented on the data acquired by more than one SBM instruments during our site survey project in western China. An analysis applying the result fro","authors_text":"A. Elmhamdi, A. S. Kordi, H.A. Al-trabulsy, M. Y. Zhao, S. Q. Liu, T. F. Song, X. F. Zhang, Y. D. Shen, Y. H. Miao, Y. Liu, Z. J. Tian","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-19T16:54:14Z","title":"Automatic data analysis for Sky Brightness Monitor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.5109","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":"sha256:71a9d34e4d8bc159dfbf63dacf79815e4e5055aadf4eb6da253cc89aae29a47d","target":"record","created_at":"2026-05-18T01:42:52Z","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":"faf574e4db48801e42757edc0d767c32d7747c10a3cb838cb049f3ecf983fa00","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-06-19T16:54:14Z","title_canon_sha256":"fe11dc1df0633cc3fc1cdd5d4585835d63828ead80dd949eda9648000b22cfaf"},"schema_version":"1.0","source":{"id":"1406.5109","kind":"arxiv","version":1}},"canonical_sha256":"6b540ac52f2ad325838d17fcf8d27658bb1c0d3ba3d16925ab56b35187f291db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6b540ac52f2ad325838d17fcf8d27658bb1c0d3ba3d16925ab56b35187f291db","first_computed_at":"2026-05-18T01:42:52.942867Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:52.942867Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zXNxZSABT6mNlHfwEE7Vt38nN3tD+Q3yUpl9kkOxU3uzyDJugeY28JQkvTUuEphZmqjoaqRauo8SYxHdQhptAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:52.943548Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.5109","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71a9d34e4d8bc159dfbf63dacf79815e4e5055aadf4eb6da253cc89aae29a47d","sha256:de0ae3f76aa91fe01501ae8cfbc7555a8c17e8dcb6d3bb63b24fea036cb0da69"],"state_sha256":"95cefc502e0a64bd6654c2480cfb0a09b47efdfc02ebe1d24f949eb83aeeabec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g66HDCD7879j5QrPpK99wUcEB3NMsyb9rErqryxKPcxcXM8lcvTS+xHIO3y+fxatLSZ9FrMshQU79W8KtqfPCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T15:33:05.205714Z","bundle_sha256":"159bb546d8c71072173255a9922062271d95883211318aacf83ed9b9de6dcea2"}}