{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:LNVPW4QPTHR7DRC4X34IN76KB7","short_pith_number":"pith:LNVPW4QP","canonical_record":{"source":{"id":"1806.08034","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-21T01:15:33Z","cross_cats_sorted":[],"title_canon_sha256":"b518975d600053acce704e9ca64ffb8a23f0cf5c757385b544af33431a583325","abstract_canon_sha256":"028bbea04beaab8e1803ed54d89efdee6e9e9988eb8e99ececb54b00d2a2beb1"},"schema_version":"1.0"},"canonical_sha256":"5b6afb720f99e3f1c45cbef886ffca0ff370cfd27180639c6d0b076e1848ffd7","source":{"kind":"arxiv","id":"1806.08034","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.08034","created_at":"2026-05-18T00:12:42Z"},{"alias_kind":"arxiv_version","alias_value":"1806.08034v1","created_at":"2026-05-18T00:12:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.08034","created_at":"2026-05-18T00:12:42Z"},{"alias_kind":"pith_short_12","alias_value":"LNVPW4QPTHR7","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LNVPW4QPTHR7DRC4","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LNVPW4QP","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:LNVPW4QPTHR7DRC4X34IN76KB7","target":"record","payload":{"canonical_record":{"source":{"id":"1806.08034","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-21T01:15:33Z","cross_cats_sorted":[],"title_canon_sha256":"b518975d600053acce704e9ca64ffb8a23f0cf5c757385b544af33431a583325","abstract_canon_sha256":"028bbea04beaab8e1803ed54d89efdee6e9e9988eb8e99ececb54b00d2a2beb1"},"schema_version":"1.0"},"canonical_sha256":"5b6afb720f99e3f1c45cbef886ffca0ff370cfd27180639c6d0b076e1848ffd7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:42.218484Z","signature_b64":"k0+AumTDFiqq/R0T43INms+Vq9xLVQUhIhraMvz5VskCLMtpkaJkizf+urdNOkqYQvW0kPH68Ls6581WkjzxAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5b6afb720f99e3f1c45cbef886ffca0ff370cfd27180639c6d0b076e1848ffd7","last_reissued_at":"2026-05-18T00:12:42.217873Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:42.217873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.08034","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":"2026-05-18T00:12:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+MBq2VrU/hSPijoGW4+ukmIXRRb4I7sPLn4yniOfWYEyH6ZXK9mwx/q4CTCJv+6eeVIn4dn7awiyJCzmzfgZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T23:14:29.308957Z"},"content_sha256":"0593fee8a41434b456d7dfe4cdbbbd863b48e253773647aa18a2ee8d83cb8481","schema_version":"1.0","event_id":"sha256:0593fee8a41434b456d7dfe4cdbbbd863b48e253773647aa18a2ee8d83cb8481"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:LNVPW4QPTHR7DRC4X34IN76KB7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design of Near Infrared Sky Brightness Monitor and Test Running at Ngari Observatory in Tibet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Feng-xin Jiang, Hong-Fei Zhang, Hong-Shuai Wang, Jian Wang, Jie Chen, Jin-ting Chen, Ming-Hao Jia, Peng Jiang, Peng Tang, Qi-Jie Tang, Qing-Feng Zhu, Shao-Hua Zhang, Shu-Cheng Dong, Tuo Ji, Ya-qi Chen, Yi-hao Zhang, Yong-Qiang Yao, Yun-He Zhou, Zhi-yue Wang","submitted_at":"2018-06-21T01:15:33Z","abstract_excerpt":"Tibet is known as the third pole of the earth, as high as the South Pole and North Pole. The Ngari (Ali) observatory in Tibet has the advantage of plenty of photometric night, low precipitable water vapor, high transmittance, good seeing. It is a good site, and promising to be one of the best place for infrared and submillimeter observations in the world. However, there is no data available for sky background brightness in such place, which restrict the astronomical development of the sites. In the near infrared band of J, H, Ks, a NIR sky brightness monitor (NISBM) is designed based on InGaAs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.08034","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":"2026-05-18T00:12:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K8JzcTbMbDdTOPYpo9lnAyXjUMKxccC322kA1c1QzF8oX2rpZ59OyO2yGU6En2GgJkvzmINbvgy5fAYsdGYMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T23:14:29.309615Z"},"content_sha256":"b4fc56d147fa5cb9f41097e26c155cbd2e173757b2a1be372f7d176693b42ab3","schema_version":"1.0","event_id":"sha256:b4fc56d147fa5cb9f41097e26c155cbd2e173757b2a1be372f7d176693b42ab3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LNVPW4QPTHR7DRC4X34IN76KB7/bundle.json","state_url":"https://pith.science/pith/LNVPW4QPTHR7DRC4X34IN76KB7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LNVPW4QPTHR7DRC4X34IN76KB7/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":"2026-05-18T23:14:29Z","links":{"resolver":"https://pith.science/pith/LNVPW4QPTHR7DRC4X34IN76KB7","bundle":"https://pith.science/pith/LNVPW4QPTHR7DRC4X34IN76KB7/bundle.json","state":"https://pith.science/pith/LNVPW4QPTHR7DRC4X34IN76KB7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LNVPW4QPTHR7DRC4X34IN76KB7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:LNVPW4QPTHR7DRC4X34IN76KB7","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":"028bbea04beaab8e1803ed54d89efdee6e9e9988eb8e99ececb54b00d2a2beb1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-21T01:15:33Z","title_canon_sha256":"b518975d600053acce704e9ca64ffb8a23f0cf5c757385b544af33431a583325"},"schema_version":"1.0","source":{"id":"1806.08034","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.08034","created_at":"2026-05-18T00:12:42Z"},{"alias_kind":"arxiv_version","alias_value":"1806.08034v1","created_at":"2026-05-18T00:12:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.08034","created_at":"2026-05-18T00:12:42Z"},{"alias_kind":"pith_short_12","alias_value":"LNVPW4QPTHR7","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LNVPW4QPTHR7DRC4","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LNVPW4QP","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:b4fc56d147fa5cb9f41097e26c155cbd2e173757b2a1be372f7d176693b42ab3","target":"graph","created_at":"2026-05-18T00:12:42Z","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":"Tibet is known as the third pole of the earth, as high as the South Pole and North Pole. The Ngari (Ali) observatory in Tibet has the advantage of plenty of photometric night, low precipitable water vapor, high transmittance, good seeing. It is a good site, and promising to be one of the best place for infrared and submillimeter observations in the world. However, there is no data available for sky background brightness in such place, which restrict the astronomical development of the sites. In the near infrared band of J, H, Ks, a NIR sky brightness monitor (NISBM) is designed based on InGaAs","authors_text":"Feng-xin Jiang, Hong-Fei Zhang, Hong-Shuai Wang, Jian Wang, Jie Chen, Jin-ting Chen, Ming-Hao Jia, Peng Jiang, Peng Tang, Qi-Jie Tang, Qing-Feng Zhu, Shao-Hua Zhang, Shu-Cheng Dong, Tuo Ji, Ya-qi Chen, Yi-hao Zhang, Yong-Qiang Yao, Yun-He Zhou, Zhi-yue Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-21T01:15:33Z","title":"Design of Near Infrared Sky Brightness Monitor and Test Running at Ngari Observatory in Tibet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.08034","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":"sha256:0593fee8a41434b456d7dfe4cdbbbd863b48e253773647aa18a2ee8d83cb8481","target":"record","created_at":"2026-05-18T00:12:42Z","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":"028bbea04beaab8e1803ed54d89efdee6e9e9988eb8e99ececb54b00d2a2beb1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-21T01:15:33Z","title_canon_sha256":"b518975d600053acce704e9ca64ffb8a23f0cf5c757385b544af33431a583325"},"schema_version":"1.0","source":{"id":"1806.08034","kind":"arxiv","version":1}},"canonical_sha256":"5b6afb720f99e3f1c45cbef886ffca0ff370cfd27180639c6d0b076e1848ffd7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5b6afb720f99e3f1c45cbef886ffca0ff370cfd27180639c6d0b076e1848ffd7","first_computed_at":"2026-05-18T00:12:42.217873Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:42.217873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k0+AumTDFiqq/R0T43INms+Vq9xLVQUhIhraMvz5VskCLMtpkaJkizf+urdNOkqYQvW0kPH68Ls6581WkjzxAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:42.218484Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.08034","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0593fee8a41434b456d7dfe4cdbbbd863b48e253773647aa18a2ee8d83cb8481","sha256:b4fc56d147fa5cb9f41097e26c155cbd2e173757b2a1be372f7d176693b42ab3"],"state_sha256":"7d5dab2af9a2a36b8578bc8694f25caac0f51edcf110c0ee2760164d2e094dfb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4d+GTXS2WOImB3YGxEI6AZMgU7bcTE2ArSqXObARNfvU5p/Yy+0QPGYZm+M6OSftDL1o95YhFesU5t6ieEWzAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T23:14:29.311694Z","bundle_sha256":"a3d4eec814c690f7cac1eb841d621835f9822c3fea634ef7a48c28d3f9b9828f"}}