{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:DVLVDAYJPNWUJ43JT4MRZW24BO","short_pith_number":"pith:DVLVDAYJ","canonical_record":{"source":{"id":"1711.10596","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-28T22:42:35Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"a6b1e38ebade71067f18c71d9529ac83db659e75799119149bb939be7abde18e","abstract_canon_sha256":"5cbf029b7028c0ad1293fbc5247af14e9c180fc2b133c6ec3fbf6975215b3e82"},"schema_version":"1.0"},"canonical_sha256":"1d575183097b6d44f3699f191cdb5c0b80aadf62f2766654273da88400f579e4","source":{"kind":"arxiv","id":"1711.10596","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.10596","created_at":"2026-05-18T00:00:59Z"},{"alias_kind":"arxiv_version","alias_value":"1711.10596v1","created_at":"2026-05-18T00:00:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.10596","created_at":"2026-05-18T00:00:59Z"},{"alias_kind":"pith_short_12","alias_value":"DVLVDAYJPNWU","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DVLVDAYJPNWUJ43J","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DVLVDAYJ","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:DVLVDAYJPNWUJ43JT4MRZW24BO","target":"record","payload":{"canonical_record":{"source":{"id":"1711.10596","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-28T22:42:35Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"a6b1e38ebade71067f18c71d9529ac83db659e75799119149bb939be7abde18e","abstract_canon_sha256":"5cbf029b7028c0ad1293fbc5247af14e9c180fc2b133c6ec3fbf6975215b3e82"},"schema_version":"1.0"},"canonical_sha256":"1d575183097b6d44f3699f191cdb5c0b80aadf62f2766654273da88400f579e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:59.754807Z","signature_b64":"mKPo8an7UvNK/f2cbD6K2Ypxgk3G0lheyEk0wohwr+CJKeQH5ytnbcOmNM5m42OgyoolO2qbrcqj3c5yRT2DDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1d575183097b6d44f3699f191cdb5c0b80aadf62f2766654273da88400f579e4","last_reissued_at":"2026-05-18T00:00:59.754256Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:59.754256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.10596","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":"2026-05-18T00:00:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9IPA3G19+74hzgPSkigfaYXwxpb2JNF4fn6eP4Tzsgl76wL/6lYSRRllNBl0lY+ozOhsB0lDmgou73nPZwyzDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:25:17.511156Z"},"content_sha256":"8973a2b38e8aeafd71937b466c46111c5ffe2f9ae57c7ceb178ffed6738777a1","schema_version":"1.0","event_id":"sha256:8973a2b38e8aeafd71937b466c46111c5ffe2f9ae57c7ceb178ffed6738777a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:DVLVDAYJPNWUJ43JT4MRZW24BO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SPIDER: CMB polarimetry from the edge of space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"A.A. Fraisse, A.C. Weber, A.D. Turner, A.E. Gambrel, A.J. Duivenvoorden, A.S. Bergman, A.S. Rahlin, A. Trangsrud, B. Osherson, B. Racine, C.B. Netterfield, C.L. Kuo, C.R. Contaldi, C. Reintsema, C. Tucker, D.V. Wiebe, E.Y. Young, G. Hilton, H.C. Chiang, H.K. Eriksen, I.K. Wehus, I.L. Padilla, J.A. Shariff, J.D. Soler, J.E. Gudmundsson, J.E. Ruhl, J.F. van der List, J. Hartley, J.J. Bock, J.M. Nagy, J.P. Filippini, J.R. Bond, K.D. Irwin, K. Freese, K. Ganga, K. Megerian, L.M. Fissel, L. Moncelsi, M. Amiri, M.C. Runyan, M. Farhang, M. Galloway, M. Halpern, M. Hasselfield, M. Nolta, N.N. Gandilo, O. Dor\\'e, P.A.R. Ade, P.V. Mason, R. Bihary, R. Gualtieri, R.S. Tucker, R.V. Gramillano, S.A. Bryan, S.J. Benton, S. Li, T.A. Morford, T.M. Ruud, V.V. Hristov, W.C. Jones, W. Holmes, X. Song, Z.D. Kermish, Z. Huang","submitted_at":"2017-11-28T22:42:35Z","abstract_excerpt":"SPIDER is a balloon-borne instrument designed to map the polarization of the millimeter-wave sky at large angular scales. SPIDER targets the B-mode signature of primordial gravitational waves in the cosmic microwave background (CMB), with a focus on mapping a large sky area with high fidelity at multiple frequencies. SPIDER's first longduration balloon (LDB) flight in January 2015 deployed a total of 2400 antenna-coupled Transition Edge Sensors (TESs) at 90 GHz and 150 GHz. In this work we review the design and in-flight performance of the SPIDER instrument, with a particular focus on the meas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.10596","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":"2026-05-18T00:00:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1PEDOi1CYXplmX4atkjm0GSVu6FcSjvXi8QARw0NhQ9gupczYue3XJklLeA9yIK0H3EUzabDXUvyk5cHIheyBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:25:17.511898Z"},"content_sha256":"8a515927320cdb2c50915d39b5791f940e283bcb2b1f246f64902841d137da00","schema_version":"1.0","event_id":"sha256:8a515927320cdb2c50915d39b5791f940e283bcb2b1f246f64902841d137da00"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DVLVDAYJPNWUJ43JT4MRZW24BO/bundle.json","state_url":"https://pith.science/pith/DVLVDAYJPNWUJ43JT4MRZW24BO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DVLVDAYJPNWUJ43JT4MRZW24BO/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":"2026-05-29T19:25:17Z","links":{"resolver":"https://pith.science/pith/DVLVDAYJPNWUJ43JT4MRZW24BO","bundle":"https://pith.science/pith/DVLVDAYJPNWUJ43JT4MRZW24BO/bundle.json","state":"https://pith.science/pith/DVLVDAYJPNWUJ43JT4MRZW24BO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DVLVDAYJPNWUJ43JT4MRZW24BO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:DVLVDAYJPNWUJ43JT4MRZW24BO","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":"5cbf029b7028c0ad1293fbc5247af14e9c180fc2b133c6ec3fbf6975215b3e82","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-28T22:42:35Z","title_canon_sha256":"a6b1e38ebade71067f18c71d9529ac83db659e75799119149bb939be7abde18e"},"schema_version":"1.0","source":{"id":"1711.10596","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.10596","created_at":"2026-05-18T00:00:59Z"},{"alias_kind":"arxiv_version","alias_value":"1711.10596v1","created_at":"2026-05-18T00:00:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.10596","created_at":"2026-05-18T00:00:59Z"},{"alias_kind":"pith_short_12","alias_value":"DVLVDAYJPNWU","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DVLVDAYJPNWUJ43J","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DVLVDAYJ","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:8a515927320cdb2c50915d39b5791f940e283bcb2b1f246f64902841d137da00","target":"graph","created_at":"2026-05-18T00:00:59Z","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":"SPIDER is a balloon-borne instrument designed to map the polarization of the millimeter-wave sky at large angular scales. SPIDER targets the B-mode signature of primordial gravitational waves in the cosmic microwave background (CMB), with a focus on mapping a large sky area with high fidelity at multiple frequencies. SPIDER's first longduration balloon (LDB) flight in January 2015 deployed a total of 2400 antenna-coupled Transition Edge Sensors (TESs) at 90 GHz and 150 GHz. In this work we review the design and in-flight performance of the SPIDER instrument, with a particular focus on the meas","authors_text":"A.A. Fraisse, A.C. Weber, A.D. Turner, A.E. Gambrel, A.J. Duivenvoorden, A.S. Bergman, A.S. Rahlin, A. Trangsrud, B. Osherson, B. Racine, C.B. Netterfield, C.L. Kuo, C.R. Contaldi, C. Reintsema, C. Tucker, D.V. Wiebe, E.Y. Young, G. Hilton, H.C. Chiang, H.K. Eriksen, I.K. Wehus, I.L. Padilla, J.A. Shariff, J.D. Soler, J.E. Gudmundsson, J.E. Ruhl, J.F. van der List, J. Hartley, J.J. Bock, J.M. Nagy, J.P. Filippini, J.R. Bond, K.D. Irwin, K. Freese, K. Ganga, K. Megerian, L.M. Fissel, L. Moncelsi, M. Amiri, M.C. Runyan, M. Farhang, M. Galloway, M. Halpern, M. Hasselfield, M. Nolta, N.N. Gandilo, O. Dor\\'e, P.A.R. Ade, P.V. Mason, R. Bihary, R. Gualtieri, R.S. Tucker, R.V. Gramillano, S.A. Bryan, S.J. Benton, S. Li, T.A. Morford, T.M. Ruud, V.V. Hristov, W.C. Jones, W. Holmes, X. Song, Z.D. Kermish, Z. Huang","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-28T22:42:35Z","title":"SPIDER: CMB polarimetry from the edge of space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.10596","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":"sha256:8973a2b38e8aeafd71937b466c46111c5ffe2f9ae57c7ceb178ffed6738777a1","target":"record","created_at":"2026-05-18T00:00:59Z","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":"5cbf029b7028c0ad1293fbc5247af14e9c180fc2b133c6ec3fbf6975215b3e82","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-28T22:42:35Z","title_canon_sha256":"a6b1e38ebade71067f18c71d9529ac83db659e75799119149bb939be7abde18e"},"schema_version":"1.0","source":{"id":"1711.10596","kind":"arxiv","version":1}},"canonical_sha256":"1d575183097b6d44f3699f191cdb5c0b80aadf62f2766654273da88400f579e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1d575183097b6d44f3699f191cdb5c0b80aadf62f2766654273da88400f579e4","first_computed_at":"2026-05-18T00:00:59.754256Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:59.754256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mKPo8an7UvNK/f2cbD6K2Ypxgk3G0lheyEk0wohwr+CJKeQH5ytnbcOmNM5m42OgyoolO2qbrcqj3c5yRT2DDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:59.754807Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.10596","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8973a2b38e8aeafd71937b466c46111c5ffe2f9ae57c7ceb178ffed6738777a1","sha256:8a515927320cdb2c50915d39b5791f940e283bcb2b1f246f64902841d137da00"],"state_sha256":"cb9dc99415e8c4c9113b3367d719a41d76d72184514111036ae103eba59904a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CLWkalQ2Eng604zf+AkrObrhS3nEiORDe+/Oh/viDMrrHY7QK8+mVTeZYlrWRY2SL6AbVhCQAhA9dvRRLy5FAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T19:25:17.515995Z","bundle_sha256":"112a88d4916eb9993d9e3c9eadd871155769f8a50c000bdbe9f5dc93ccb82caf"}}