{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:HS7SM3JQPF4VLDQHKEMVNNG2SI","short_pith_number":"pith:HS7SM3JQ","canonical_record":{"source":{"id":"1511.04488","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-14T01:11:32Z","cross_cats_sorted":[],"title_canon_sha256":"490da395635edbf97e3d8d4c8534d6e6d6622019922c920059f99741bd964f20","abstract_canon_sha256":"7e0509648bbb95579f55b3da8a7f73091b6f770d98821c1454925b12dc6b3e87"},"schema_version":"1.0"},"canonical_sha256":"3cbf266d307979558e07511956b4da9201cd75506d54434626bf08cc31815c82","source":{"kind":"arxiv","id":"1511.04488","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04488","created_at":"2026-05-18T01:22:00Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04488v1","created_at":"2026-05-18T01:22:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04488","created_at":"2026-05-18T01:22:00Z"},{"alias_kind":"pith_short_12","alias_value":"HS7SM3JQPF4V","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"HS7SM3JQPF4VLDQH","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"HS7SM3JQ","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:HS7SM3JQPF4VLDQHKEMVNNG2SI","target":"record","payload":{"canonical_record":{"source":{"id":"1511.04488","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-14T01:11:32Z","cross_cats_sorted":[],"title_canon_sha256":"490da395635edbf97e3d8d4c8534d6e6d6622019922c920059f99741bd964f20","abstract_canon_sha256":"7e0509648bbb95579f55b3da8a7f73091b6f770d98821c1454925b12dc6b3e87"},"schema_version":"1.0"},"canonical_sha256":"3cbf266d307979558e07511956b4da9201cd75506d54434626bf08cc31815c82","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:00.520758Z","signature_b64":"5n4bT4RxJddpdInP2unDe23d303piQwda9BFxt80lZiH1ZCT0hZgz73EkXznt69C/fc7rSML9PSdFhxU5sV/Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3cbf266d307979558e07511956b4da9201cd75506d54434626bf08cc31815c82","last_reissued_at":"2026-05-18T01:22:00.520290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:00.520290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.04488","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":"2026-05-18T01:22:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9qMyl2dfW1B2vU/a44joTlAN7RhFSr0u860nqp4Tj8CB1XP4l6w2DE/ZscDGaTcozWbzAvAAi0AqLMmrNTWYAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T10:08:13.644723Z"},"content_sha256":"c713ee62931e8853e5ab3a1627cced07d15c4da370f1066f84c757317b369b62","schema_version":"1.0","event_id":"sha256:c713ee62931e8853e5ab3a1627cced07d15c4da370f1066f84c757317b369b62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:HS7SM3JQPF4VLDQHKEMVNNG2SI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low Noise Titanium Nitride KIDs for SuperSpec: A Millimeter-Wave On-Chip Spectrometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Kov\\'acs, C. E. Tucker, C. M. Bradford, C. McKenney, C. Shiu, E. Shirokoff, G. Che, H. G. LeDuc, J. Glenn, J. Wheeler, J. Zmuidzinas, M. Hollister, P. Mauskopf, P. S. Barry, R. O'Brient, R. Williamson, S. Chapman, S. Hailey-Dunsheath, S. Padin, T. Reck","submitted_at":"2015-11-14T01:11:32Z","abstract_excerpt":"SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 - 500), large bandwidth (~1.65:1) submillimeter and millimeter survey spectroscopy of high-redshift galaxies. The spectrometer employs a filter bank architecture, and consists of a series of half-wave resonators formed by lithographically-patterned superconducting transmission lines. The signal power admitted by each resonator is detected by a lumped element titanium nitride (TiN) kinetic inductance detector (KID) operating at 100 - 200 MHz. We have tested a new prototype device that achi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04488","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":"2026-05-18T01:22:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cBtrBGyvXG/o0BwsaW2DUkZhjHktfXnVNTuUSiQ+JPXRihnqScEubFiMErcdRDm8ZRDpAUJOG6kG9nSDhEe9Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T10:08:13.645272Z"},"content_sha256":"d5fb26f4fe9343756272198c3de2861af3314fba48ce6304064869a71ed76406","schema_version":"1.0","event_id":"sha256:d5fb26f4fe9343756272198c3de2861af3314fba48ce6304064869a71ed76406"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HS7SM3JQPF4VLDQHKEMVNNG2SI/bundle.json","state_url":"https://pith.science/pith/HS7SM3JQPF4VLDQHKEMVNNG2SI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HS7SM3JQPF4VLDQHKEMVNNG2SI/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":"2026-05-26T10:08:13Z","links":{"resolver":"https://pith.science/pith/HS7SM3JQPF4VLDQHKEMVNNG2SI","bundle":"https://pith.science/pith/HS7SM3JQPF4VLDQHKEMVNNG2SI/bundle.json","state":"https://pith.science/pith/HS7SM3JQPF4VLDQHKEMVNNG2SI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HS7SM3JQPF4VLDQHKEMVNNG2SI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HS7SM3JQPF4VLDQHKEMVNNG2SI","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":"7e0509648bbb95579f55b3da8a7f73091b6f770d98821c1454925b12dc6b3e87","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-14T01:11:32Z","title_canon_sha256":"490da395635edbf97e3d8d4c8534d6e6d6622019922c920059f99741bd964f20"},"schema_version":"1.0","source":{"id":"1511.04488","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04488","created_at":"2026-05-18T01:22:00Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04488v1","created_at":"2026-05-18T01:22:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04488","created_at":"2026-05-18T01:22:00Z"},{"alias_kind":"pith_short_12","alias_value":"HS7SM3JQPF4V","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"HS7SM3JQPF4VLDQH","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"HS7SM3JQ","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:d5fb26f4fe9343756272198c3de2861af3314fba48ce6304064869a71ed76406","target":"graph","created_at":"2026-05-18T01:22:00Z","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":"SuperSpec is a novel on-chip spectrometer we are developing for multi-object, moderate resolution (R = 100 - 500), large bandwidth (~1.65:1) submillimeter and millimeter survey spectroscopy of high-redshift galaxies. The spectrometer employs a filter bank architecture, and consists of a series of half-wave resonators formed by lithographically-patterned superconducting transmission lines. The signal power admitted by each resonator is detected by a lumped element titanium nitride (TiN) kinetic inductance detector (KID) operating at 100 - 200 MHz. We have tested a new prototype device that achi","authors_text":"A. Kov\\'acs, C. E. Tucker, C. M. Bradford, C. McKenney, C. Shiu, E. Shirokoff, G. Che, H. G. LeDuc, J. Glenn, J. Wheeler, J. Zmuidzinas, M. Hollister, P. Mauskopf, P. S. Barry, R. O'Brient, R. Williamson, S. Chapman, S. Hailey-Dunsheath, S. Padin, T. Reck","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-14T01:11:32Z","title":"Low Noise Titanium Nitride KIDs for SuperSpec: A Millimeter-Wave On-Chip Spectrometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04488","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:c713ee62931e8853e5ab3a1627cced07d15c4da370f1066f84c757317b369b62","target":"record","created_at":"2026-05-18T01:22:00Z","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":"7e0509648bbb95579f55b3da8a7f73091b6f770d98821c1454925b12dc6b3e87","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-11-14T01:11:32Z","title_canon_sha256":"490da395635edbf97e3d8d4c8534d6e6d6622019922c920059f99741bd964f20"},"schema_version":"1.0","source":{"id":"1511.04488","kind":"arxiv","version":1}},"canonical_sha256":"3cbf266d307979558e07511956b4da9201cd75506d54434626bf08cc31815c82","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3cbf266d307979558e07511956b4da9201cd75506d54434626bf08cc31815c82","first_computed_at":"2026-05-18T01:22:00.520290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:00.520290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5n4bT4RxJddpdInP2unDe23d303piQwda9BFxt80lZiH1ZCT0hZgz73EkXznt69C/fc7rSML9PSdFhxU5sV/Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:00.520758Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.04488","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c713ee62931e8853e5ab3a1627cced07d15c4da370f1066f84c757317b369b62","sha256:d5fb26f4fe9343756272198c3de2861af3314fba48ce6304064869a71ed76406"],"state_sha256":"faf24ec62aa57dbed42b34bf8516bac9e537b8d40dd4c69da5c190796abf8320"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZXBx6d4X1NNeWtOVtSg4lYWSt0qH/Fg/nfuQC/HHUh22sG7nNhy3TR2agEEWOcHXlItw0GsfwEdd+GvB0klqCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T10:08:13.648383Z","bundle_sha256":"eca9022deb111cc9975b1dee0abccad3bf82bafa0e4f92ba745cac186fd6fc9a"}}