{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:M5YKBRPJG2YRTNXMPVYQRBEFKE","short_pith_number":"pith:M5YKBRPJ","canonical_record":{"source":{"id":"1602.04512","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-14T21:14:21Z","cross_cats_sorted":[],"title_canon_sha256":"2c9491b158cc61440f4ef118f47484629ea84100a2121d04f8623f2165c10194","abstract_canon_sha256":"90dce7418d1095e737c1b3d1b920595605d0cc5b0a70fb9c2e9a7dd69fe9ccf1"},"schema_version":"1.0"},"canonical_sha256":"6770a0c5e936b119b6ec7d71088485513eb245318d5bef75308611c2cb0a9ff2","source":{"kind":"arxiv","id":"1602.04512","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.04512","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"arxiv_version","alias_value":"1602.04512v1","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.04512","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"pith_short_12","alias_value":"M5YKBRPJG2YR","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"M5YKBRPJG2YRTNXM","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"M5YKBRPJ","created_at":"2026-05-18T12:30:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:M5YKBRPJG2YRTNXMPVYQRBEFKE","target":"record","payload":{"canonical_record":{"source":{"id":"1602.04512","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-14T21:14:21Z","cross_cats_sorted":[],"title_canon_sha256":"2c9491b158cc61440f4ef118f47484629ea84100a2121d04f8623f2165c10194","abstract_canon_sha256":"90dce7418d1095e737c1b3d1b920595605d0cc5b0a70fb9c2e9a7dd69fe9ccf1"},"schema_version":"1.0"},"canonical_sha256":"6770a0c5e936b119b6ec7d71088485513eb245318d5bef75308611c2cb0a9ff2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:37.378227Z","signature_b64":"46u7YV0RfBctlE1xlg07coDl02FRcg249sMA9pp48JzbtNUL+AAsjAkv5HDs8IAyl5QHqkvMiSWxyxnflzVQCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6770a0c5e936b119b6ec7d71088485513eb245318d5bef75308611c2cb0a9ff2","last_reissued_at":"2026-05-18T01:18:37.377643Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:37.377643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.04512","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":"2026-05-18T01:18:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oQ24eRSoDdIPjVSjcmZt6HUd3oGjpnATh8oMOVo1vytMSItB9zYw4o0W0ct/hYsNASTSyw1dRTa2cTRtsUkuBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:39:46.166712Z"},"content_sha256":"1fdabbd649edd4d6d4a1ca4b4499249241d8fd7aec6572feaaa1703ddac89117","schema_version":"1.0","event_id":"sha256:1fdabbd649edd4d6d4a1ca4b4499249241d8fd7aec6572feaaa1703ddac89117"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:M5YKBRPJG2YRTNXMPVYQRBEFKE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimising the K dark filter for the Kunlun Infrared Sky Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Jeremy Mould, Jessica Zheng, Jon Lawrence, Lifan Wang, Matthew Freeman, Michael Ashley, Michael Burton, Peter Tuthill, Yushan Li","submitted_at":"2016-02-14T21:14:21Z","abstract_excerpt":"The Kunlun Infrared Sky Survey will be the first comprehensive exploration of the time varying Universe in the infrared. A key feature in optimizing the scientific yield of this ambitious research program is the choice of the survey passband. In particular the survey aims to maximally exploit the unique thermal and atmospheric conditions pertaining to the high Antarctic site. By simulating the expected signal-to-noise for varying filter properties within the so-called \"K_DARK\" 2.4um window, filter performance can be tuned and best-case designs are given covering a range of conditions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.04512","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":"2026-05-18T01:18:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r9570unvALRb4DMD/Fe46XxivCuDVsfn9HOZ9htb/z0wwTppLE9xZbrToLsVgLJqByOJedH0yFz32uNDvxkrCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:39:46.167201Z"},"content_sha256":"6bbbba507b8e50e48bf0cb0cca3e9a0f3726ecf49e93966f6680e54edbe79031","schema_version":"1.0","event_id":"sha256:6bbbba507b8e50e48bf0cb0cca3e9a0f3726ecf49e93966f6680e54edbe79031"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M5YKBRPJG2YRTNXMPVYQRBEFKE/bundle.json","state_url":"https://pith.science/pith/M5YKBRPJG2YRTNXMPVYQRBEFKE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M5YKBRPJG2YRTNXMPVYQRBEFKE/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":"2026-05-31T16:39:46Z","links":{"resolver":"https://pith.science/pith/M5YKBRPJG2YRTNXMPVYQRBEFKE","bundle":"https://pith.science/pith/M5YKBRPJG2YRTNXMPVYQRBEFKE/bundle.json","state":"https://pith.science/pith/M5YKBRPJG2YRTNXMPVYQRBEFKE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M5YKBRPJG2YRTNXMPVYQRBEFKE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:M5YKBRPJG2YRTNXMPVYQRBEFKE","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":"90dce7418d1095e737c1b3d1b920595605d0cc5b0a70fb9c2e9a7dd69fe9ccf1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-14T21:14:21Z","title_canon_sha256":"2c9491b158cc61440f4ef118f47484629ea84100a2121d04f8623f2165c10194"},"schema_version":"1.0","source":{"id":"1602.04512","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.04512","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"arxiv_version","alias_value":"1602.04512v1","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.04512","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"pith_short_12","alias_value":"M5YKBRPJG2YR","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"M5YKBRPJG2YRTNXM","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"M5YKBRPJ","created_at":"2026-05-18T12:30:29Z"}],"graph_snapshots":[{"event_id":"sha256:6bbbba507b8e50e48bf0cb0cca3e9a0f3726ecf49e93966f6680e54edbe79031","target":"graph","created_at":"2026-05-18T01:18:37Z","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 Kunlun Infrared Sky Survey will be the first comprehensive exploration of the time varying Universe in the infrared. A key feature in optimizing the scientific yield of this ambitious research program is the choice of the survey passband. In particular the survey aims to maximally exploit the unique thermal and atmospheric conditions pertaining to the high Antarctic site. By simulating the expected signal-to-noise for varying filter properties within the so-called \"K_DARK\" 2.4um window, filter performance can be tuned and best-case designs are given covering a range of conditions.","authors_text":"Jeremy Mould, Jessica Zheng, Jon Lawrence, Lifan Wang, Matthew Freeman, Michael Ashley, Michael Burton, Peter Tuthill, Yushan Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-14T21:14:21Z","title":"Optimising the K dark filter for the Kunlun Infrared Sky Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.04512","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":"sha256:1fdabbd649edd4d6d4a1ca4b4499249241d8fd7aec6572feaaa1703ddac89117","target":"record","created_at":"2026-05-18T01:18:37Z","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":"90dce7418d1095e737c1b3d1b920595605d0cc5b0a70fb9c2e9a7dd69fe9ccf1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-02-14T21:14:21Z","title_canon_sha256":"2c9491b158cc61440f4ef118f47484629ea84100a2121d04f8623f2165c10194"},"schema_version":"1.0","source":{"id":"1602.04512","kind":"arxiv","version":1}},"canonical_sha256":"6770a0c5e936b119b6ec7d71088485513eb245318d5bef75308611c2cb0a9ff2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6770a0c5e936b119b6ec7d71088485513eb245318d5bef75308611c2cb0a9ff2","first_computed_at":"2026-05-18T01:18:37.377643Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:37.377643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"46u7YV0RfBctlE1xlg07coDl02FRcg249sMA9pp48JzbtNUL+AAsjAkv5HDs8IAyl5QHqkvMiSWxyxnflzVQCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:37.378227Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.04512","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fdabbd649edd4d6d4a1ca4b4499249241d8fd7aec6572feaaa1703ddac89117","sha256:6bbbba507b8e50e48bf0cb0cca3e9a0f3726ecf49e93966f6680e54edbe79031"],"state_sha256":"c36e1680c05deea2d80a214a009b8e8ed1f208c20b16dd886c43ddf00892cdfa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5cFPiNtLDSu/T+abe6TJVJ+MCqm4O2EYmSOkCwU4SeD8CCrVKQNr6tr745jYtb8eOhgFPSeilpVGW3qbN4KyCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:39:46.169605Z","bundle_sha256":"7b50424abf252d8df45d8349585e983c7ce60ebd7ac045521f3ea6cda37c1d49"}}