{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:QOHQLRI6ENZLIS76IK5LNUYXTN","short_pith_number":"pith:QOHQLRI6","canonical_record":{"source":{"id":"0707.0127","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-01T21:20:53Z","cross_cats_sorted":[],"title_canon_sha256":"add079b6204cba7f15dc1e428047dd22a9e40f6137e53b12fc138feff3c77a09","abstract_canon_sha256":"4abdf820683c3aaf904d6a1b72a380636018039a4e3d997452d604ca11ede27c"},"schema_version":"1.0"},"canonical_sha256":"838f05c51e2372b44bfe42bab6d3179b67cbec9c68fb5167178d0a0b1a452187","source":{"kind":"arxiv","id":"0707.0127","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.0127","created_at":"2026-05-18T02:16:29Z"},{"alias_kind":"arxiv_version","alias_value":"0707.0127v1","created_at":"2026-05-18T02:16:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.0127","created_at":"2026-05-18T02:16:29Z"},{"alias_kind":"pith_short_12","alias_value":"QOHQLRI6ENZL","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"QOHQLRI6ENZLIS76","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"QOHQLRI6","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:QOHQLRI6ENZLIS76IK5LNUYXTN","target":"record","payload":{"canonical_record":{"source":{"id":"0707.0127","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-01T21:20:53Z","cross_cats_sorted":[],"title_canon_sha256":"add079b6204cba7f15dc1e428047dd22a9e40f6137e53b12fc138feff3c77a09","abstract_canon_sha256":"4abdf820683c3aaf904d6a1b72a380636018039a4e3d997452d604ca11ede27c"},"schema_version":"1.0"},"canonical_sha256":"838f05c51e2372b44bfe42bab6d3179b67cbec9c68fb5167178d0a0b1a452187","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:16:29.725844Z","signature_b64":"Gvs767xJM3yQim5ubgfoGCJg8S2aXmdAFMaouuMch79Ii4+2YmgZCwleutnkPgp5m5eZ+To+hnaVsncvBxI0DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"838f05c51e2372b44bfe42bab6d3179b67cbec9c68fb5167178d0a0b1a452187","last_reissued_at":"2026-05-18T02:16:29.725127Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:16:29.725127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0707.0127","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":"2026-05-18T02:16:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SEM6e1P7QhriSzIwsk3lBHyFRaPbz26K5761Qq2dDc8G20P0Aiz7ETKbDcabIuPNjLDTq3g7ECNKcTXmbur4Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:27:38.450183Z"},"content_sha256":"89364295239b5513900ce260fb54ba7f5f554329e0fc85addcf15b6f17f7992d","schema_version":"1.0","event_id":"sha256:89364295239b5513900ce260fb54ba7f5f554329e0fc85addcf15b6f17f7992d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:QOHQLRI6ENZLIS76IK5LNUYXTN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design and Initial Performance of SHARP, a Polarimeter for the SHARC-II Camera at the Caltech Submillimeter Observatory","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"C. D. Dowell, G. Novak, H. Li, J. E. Vaillancourt, L. Kirby","submitted_at":"2007-07-01T21:20:53Z","abstract_excerpt":"We have developed a fore-optics module that converts the SHARC-II camera at the Caltech Submillimeter Observatory into a sensitive imaging polarimeter at wavelengths of 350 and 450 microns. We refer to this module as \"SHARP\". SHARP splits the incident radiation into two orthogonally polarized beams that are then re-imaged onto opposite ends of the 32 x 12 pixel detector array in SHARC-II. A rotating half-wave plate is used just upstream from the polarization-splitting optics. The effect of SHARP is to convert SHARC-II into a dual-beam 12 x 12 pixel polarimeter. A novel feature of SHARP's desig"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.0127","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":"2026-05-18T02:16:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ph9b/Z2ipxYfGodRRWMZgMAp+x99upY+e8qgAgmcZ4eukWiFRdCcx6/8TxdOY6plsfSb7pvjrkNG4F1VkYEgBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T20:27:38.450981Z"},"content_sha256":"9247c3bcf9bb44cb3120f32eeda7ba52385823e1b23206f4f9057fd7067c9b81","schema_version":"1.0","event_id":"sha256:9247c3bcf9bb44cb3120f32eeda7ba52385823e1b23206f4f9057fd7067c9b81"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QOHQLRI6ENZLIS76IK5LNUYXTN/bundle.json","state_url":"https://pith.science/pith/QOHQLRI6ENZLIS76IK5LNUYXTN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QOHQLRI6ENZLIS76IK5LNUYXTN/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":"2026-05-30T20:27:38Z","links":{"resolver":"https://pith.science/pith/QOHQLRI6ENZLIS76IK5LNUYXTN","bundle":"https://pith.science/pith/QOHQLRI6ENZLIS76IK5LNUYXTN/bundle.json","state":"https://pith.science/pith/QOHQLRI6ENZLIS76IK5LNUYXTN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QOHQLRI6ENZLIS76IK5LNUYXTN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:QOHQLRI6ENZLIS76IK5LNUYXTN","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":"4abdf820683c3aaf904d6a1b72a380636018039a4e3d997452d604ca11ede27c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-01T21:20:53Z","title_canon_sha256":"add079b6204cba7f15dc1e428047dd22a9e40f6137e53b12fc138feff3c77a09"},"schema_version":"1.0","source":{"id":"0707.0127","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.0127","created_at":"2026-05-18T02:16:29Z"},{"alias_kind":"arxiv_version","alias_value":"0707.0127v1","created_at":"2026-05-18T02:16:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.0127","created_at":"2026-05-18T02:16:29Z"},{"alias_kind":"pith_short_12","alias_value":"QOHQLRI6ENZL","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"QOHQLRI6ENZLIS76","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"QOHQLRI6","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:9247c3bcf9bb44cb3120f32eeda7ba52385823e1b23206f4f9057fd7067c9b81","target":"graph","created_at":"2026-05-18T02:16:29Z","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":"We have developed a fore-optics module that converts the SHARC-II camera at the Caltech Submillimeter Observatory into a sensitive imaging polarimeter at wavelengths of 350 and 450 microns. We refer to this module as \"SHARP\". SHARP splits the incident radiation into two orthogonally polarized beams that are then re-imaged onto opposite ends of the 32 x 12 pixel detector array in SHARC-II. A rotating half-wave plate is used just upstream from the polarization-splitting optics. The effect of SHARP is to convert SHARC-II into a dual-beam 12 x 12 pixel polarimeter. A novel feature of SHARP's desig","authors_text":"C. D. Dowell, G. Novak, H. Li, J. E. Vaillancourt, L. Kirby","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-07-01T21:20:53Z","title":"Design and Initial Performance of SHARP, a Polarimeter for the SHARC-II Camera at the Caltech Submillimeter Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.0127","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":"sha256:89364295239b5513900ce260fb54ba7f5f554329e0fc85addcf15b6f17f7992d","target":"record","created_at":"2026-05-18T02:16:29Z","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":"4abdf820683c3aaf904d6a1b72a380636018039a4e3d997452d604ca11ede27c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-01T21:20:53Z","title_canon_sha256":"add079b6204cba7f15dc1e428047dd22a9e40f6137e53b12fc138feff3c77a09"},"schema_version":"1.0","source":{"id":"0707.0127","kind":"arxiv","version":1}},"canonical_sha256":"838f05c51e2372b44bfe42bab6d3179b67cbec9c68fb5167178d0a0b1a452187","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"838f05c51e2372b44bfe42bab6d3179b67cbec9c68fb5167178d0a0b1a452187","first_computed_at":"2026-05-18T02:16:29.725127Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:16:29.725127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gvs767xJM3yQim5ubgfoGCJg8S2aXmdAFMaouuMch79Ii4+2YmgZCwleutnkPgp5m5eZ+To+hnaVsncvBxI0DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:16:29.725844Z","signed_message":"canonical_sha256_bytes"},"source_id":"0707.0127","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89364295239b5513900ce260fb54ba7f5f554329e0fc85addcf15b6f17f7992d","sha256:9247c3bcf9bb44cb3120f32eeda7ba52385823e1b23206f4f9057fd7067c9b81"],"state_sha256":"945d2eb160f8cec362c7bfddeb2a770ba10de4557a5d3eb68a861418755143d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SaCjok4X13iJc5s+ulr4culw9J4xmd7FwhNdR/g2GTi0x8GkuWccCXIYZTDVOrqbGQGRTUVrRBmwD29H9j6JAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T20:27:38.455041Z","bundle_sha256":"d3a90699c6a16c0bc8a4c6e53345a477be8e127ec963a5a73e7026cd8b08cc45"}}