{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:P57JYLTP6UFEPMLUCOTS73RWTR","short_pith_number":"pith:P57JYLTP","canonical_record":{"source":{"id":"1808.07495","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-22T18:01:03Z","cross_cats_sorted":[],"title_canon_sha256":"c1523585dd361f64ae15f7a2e3e45fa3ca9f902ab050ef17dce14f214fa67114","abstract_canon_sha256":"1ae38ecba65fbe5ba18636d2fbef23aeb73d197cba7fb2b8bca84cf7f89f45e5"},"schema_version":"1.0"},"canonical_sha256":"7f7e9c2e6ff50a47b17413a72fee369c57ae9b4789459f553c57b7ec3b92569a","source":{"kind":"arxiv","id":"1808.07495","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07495","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07495v1","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07495","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"pith_short_12","alias_value":"P57JYLTP6UFE","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"P57JYLTP6UFEPMLU","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"P57JYLTP","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:P57JYLTP6UFEPMLUCOTS73RWTR","target":"record","payload":{"canonical_record":{"source":{"id":"1808.07495","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-22T18:01:03Z","cross_cats_sorted":[],"title_canon_sha256":"c1523585dd361f64ae15f7a2e3e45fa3ca9f902ab050ef17dce14f214fa67114","abstract_canon_sha256":"1ae38ecba65fbe5ba18636d2fbef23aeb73d197cba7fb2b8bca84cf7f89f45e5"},"schema_version":"1.0"},"canonical_sha256":"7f7e9c2e6ff50a47b17413a72fee369c57ae9b4789459f553c57b7ec3b92569a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:27.157886Z","signature_b64":"pRfJLTuivIZPOdJHkjaDSiQfy1Q7EqiNhvmGpYywVLFwP2Oz40qr/7xpNfysNlFMRlW1+/CJTAn9BZ6WmfkPDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f7e9c2e6ff50a47b17413a72fee369c57ae9b4789459f553c57b7ec3b92569a","last_reissued_at":"2026-05-18T00:07:27.157191Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:27.157191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.07495","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":"2026-05-18T00:07:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5LmwnWThEFTbzdJd/mA11VcIzKMqhJz/n+whCbyiOToFkp+BYayNfvTZpQrAP3szoDbf3f+gskuph6SicySYDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T11:16:33.289817Z"},"content_sha256":"869c095b9fb8aa6e1b92788e53e56f6b6380d7f81513d4742f57f7c9b8eaea55","schema_version":"1.0","event_id":"sha256:869c095b9fb8aa6e1b92788e53e56f6b6380d7f81513d4742f57f7c9b8eaea55"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:P57JYLTP6UFEPMLUCOTS73RWTR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Infrared Imaging Spectrograph (IRIS) for TMT: advancing the data reduction system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"2), (2) Department of Physics, (3) National Research Council of Canada - Herzberg, (4) Thirty Meter Telescope Observatory Corporation, (5) Physics & Astronomy Department, (6) National Astronomical Observatory of Japan, (7) Caltech Optical Observatories, (8) National Astronomical Observatories / Nanjing Institute of Astronomical Optics & Technology, BC, Brent Ellerbroek (4), CA, Canada, China), Chinese Academy of Sciences, Chris Johnson (5), David Andersen (3), Edward Chapin (3), Eric Chisholm (4), Gregory L. Walth (1), James Larkin (5), Japan, Jason Weissd, Jennifer Dunn (3), Ji Man Sohn (5), Kai Zhang (8) ((1) Center for Astrophysics & Space Sciences, Kim Gillies (4), Luc Simard (3), Mitaka, Nanjing, Nils-Erik Rundquist (1, Osawa, Pasadena, Reed Riddle (7), Robert Weber (7), Roger Smith (7), Ryuji Suzuki (6), Shelley A. Wright (1, Takashi Nakamoto (6), Tokyo, Tuan Do (5), University of California Los Angeles, University of California San Diego, USA, Victoria, Yutaka Hayano (6)","submitted_at":"2018-08-22T18:01:03Z","abstract_excerpt":"Infrared Imaging Spectrograph (IRIS) is the first light instrument for the Thirty Meter Telescope (TMT) that consists of a near-infrared (0.84 to 2.4 micron) imager and integral field spectrograph (IFS) which operates at the diffraction-limit utilizing the Narrow-Field Infrared Adaptive Optics System (NFIRAOS). The imager will have a 34 arcsec x 34 arcsec field of view with 4 milliarcsecond (mas) pixels. The IFS consists of a lenslet array and slicer, enabling four plate scales from 4 mas to 50 mas, multiple gratings and filters, which in turn will operate hundreds of individual modes. IRIS, o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07495","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":"2026-05-18T00:07:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yjJw9yzibzc3ZrK8uggTzJfyLiddaICfnx3IMqNBT1Pj3DmGMCqhwh592uwvxmYNrOmjxGCUoYAO9/vmKfD6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T11:16:33.290177Z"},"content_sha256":"7f3c4b5c2e6835d5c0f8605b48585e13e2d55dad7a28d6288023a11c82d5d253","schema_version":"1.0","event_id":"sha256:7f3c4b5c2e6835d5c0f8605b48585e13e2d55dad7a28d6288023a11c82d5d253"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P57JYLTP6UFEPMLUCOTS73RWTR/bundle.json","state_url":"https://pith.science/pith/P57JYLTP6UFEPMLUCOTS73RWTR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P57JYLTP6UFEPMLUCOTS73RWTR/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":"2026-05-20T11:16:33Z","links":{"resolver":"https://pith.science/pith/P57JYLTP6UFEPMLUCOTS73RWTR","bundle":"https://pith.science/pith/P57JYLTP6UFEPMLUCOTS73RWTR/bundle.json","state":"https://pith.science/pith/P57JYLTP6UFEPMLUCOTS73RWTR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P57JYLTP6UFEPMLUCOTS73RWTR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:P57JYLTP6UFEPMLUCOTS73RWTR","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":"1ae38ecba65fbe5ba18636d2fbef23aeb73d197cba7fb2b8bca84cf7f89f45e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-22T18:01:03Z","title_canon_sha256":"c1523585dd361f64ae15f7a2e3e45fa3ca9f902ab050ef17dce14f214fa67114"},"schema_version":"1.0","source":{"id":"1808.07495","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07495","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07495v1","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07495","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"pith_short_12","alias_value":"P57JYLTP6UFE","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"P57JYLTP6UFEPMLU","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"P57JYLTP","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:7f3c4b5c2e6835d5c0f8605b48585e13e2d55dad7a28d6288023a11c82d5d253","target":"graph","created_at":"2026-05-18T00:07:27Z","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":"Infrared Imaging Spectrograph (IRIS) is the first light instrument for the Thirty Meter Telescope (TMT) that consists of a near-infrared (0.84 to 2.4 micron) imager and integral field spectrograph (IFS) which operates at the diffraction-limit utilizing the Narrow-Field Infrared Adaptive Optics System (NFIRAOS). The imager will have a 34 arcsec x 34 arcsec field of view with 4 milliarcsecond (mas) pixels. The IFS consists of a lenslet array and slicer, enabling four plate scales from 4 mas to 50 mas, multiple gratings and filters, which in turn will operate hundreds of individual modes. IRIS, o","authors_text":"2), (2) Department of Physics, (3) National Research Council of Canada - Herzberg, (4) Thirty Meter Telescope Observatory Corporation, (5) Physics & Astronomy Department, (6) National Astronomical Observatory of Japan, (7) Caltech Optical Observatories, (8) National Astronomical Observatories / Nanjing Institute of Astronomical Optics & Technology, BC, Brent Ellerbroek (4), CA, Canada, China), Chinese Academy of Sciences, Chris Johnson (5), David Andersen (3), Edward Chapin (3), Eric Chisholm (4), Gregory L. Walth (1), James Larkin (5), Japan, Jason Weissd, Jennifer Dunn (3), Ji Man Sohn (5), Kai Zhang (8) ((1) Center for Astrophysics & Space Sciences, Kim Gillies (4), Luc Simard (3), Mitaka, Nanjing, Nils-Erik Rundquist (1, Osawa, Pasadena, Reed Riddle (7), Robert Weber (7), Roger Smith (7), Ryuji Suzuki (6), Shelley A. Wright (1, Takashi Nakamoto (6), Tokyo, Tuan Do (5), University of California Los Angeles, University of California San Diego, USA, Victoria, Yutaka Hayano (6)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-22T18:01:03Z","title":"The Infrared Imaging Spectrograph (IRIS) for TMT: advancing the data reduction system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07495","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":"sha256:869c095b9fb8aa6e1b92788e53e56f6b6380d7f81513d4742f57f7c9b8eaea55","target":"record","created_at":"2026-05-18T00:07:27Z","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":"1ae38ecba65fbe5ba18636d2fbef23aeb73d197cba7fb2b8bca84cf7f89f45e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-22T18:01:03Z","title_canon_sha256":"c1523585dd361f64ae15f7a2e3e45fa3ca9f902ab050ef17dce14f214fa67114"},"schema_version":"1.0","source":{"id":"1808.07495","kind":"arxiv","version":1}},"canonical_sha256":"7f7e9c2e6ff50a47b17413a72fee369c57ae9b4789459f553c57b7ec3b92569a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f7e9c2e6ff50a47b17413a72fee369c57ae9b4789459f553c57b7ec3b92569a","first_computed_at":"2026-05-18T00:07:27.157191Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:27.157191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pRfJLTuivIZPOdJHkjaDSiQfy1Q7EqiNhvmGpYywVLFwP2Oz40qr/7xpNfysNlFMRlW1+/CJTAn9BZ6WmfkPDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:27.157886Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07495","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:869c095b9fb8aa6e1b92788e53e56f6b6380d7f81513d4742f57f7c9b8eaea55","sha256:7f3c4b5c2e6835d5c0f8605b48585e13e2d55dad7a28d6288023a11c82d5d253"],"state_sha256":"1b0a23e23af508065b0848c8727f6437c2d64eb7d7e519be922c71405e5ebc2b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IRX5T+x1wgiFhKZD2vSnsR9j+z2mVjl1J9zNsZLod3VagpF7R+IzbObzS2QtGq41FLpX76XIFw9/Yfjmd0xMBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T11:16:33.292364Z","bundle_sha256":"4c1f711cbba1c46573270a1151dcebf4f3a52cae5662d989bef8a3b47da618ca"}}