{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:EOS77MKV66AD5SY7P7BM7OCIHI","short_pith_number":"pith:EOS77MKV","canonical_record":{"source":{"id":"1004.2595","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-04-15T10:17:08Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"04a5f0f254035a4989d8ad75fd669423bcfe456f34e092ac9e672f4dc90ddd7b","abstract_canon_sha256":"d1503aa21853efe521261e63641072077140b982aec841b55c756a1de4ede231"},"schema_version":"1.0"},"canonical_sha256":"23a5ffb155f7803ecb1f7fc2cfb8483a229ec05b1faca6c4431f47487a241ef5","source":{"kind":"arxiv","id":"1004.2595","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.2595","created_at":"2026-05-18T02:08:05Z"},{"alias_kind":"arxiv_version","alias_value":"1004.2595v1","created_at":"2026-05-18T02:08:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.2595","created_at":"2026-05-18T02:08:05Z"},{"alias_kind":"pith_short_12","alias_value":"EOS77MKV66AD","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"EOS77MKV66AD5SY7","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"EOS77MKV","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:EOS77MKV66AD5SY7P7BM7OCIHI","target":"record","payload":{"canonical_record":{"source":{"id":"1004.2595","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-04-15T10:17:08Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"04a5f0f254035a4989d8ad75fd669423bcfe456f34e092ac9e672f4dc90ddd7b","abstract_canon_sha256":"d1503aa21853efe521261e63641072077140b982aec841b55c756a1de4ede231"},"schema_version":"1.0"},"canonical_sha256":"23a5ffb155f7803ecb1f7fc2cfb8483a229ec05b1faca6c4431f47487a241ef5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:05.274430Z","signature_b64":"s123vvSCFRW5s8XQyqRdgawUyTdWEdTxtN4AXO0tpASAf1NTbzs4a2IglfiAXiVWm8UWTM1N9WuQEYlrGemeCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23a5ffb155f7803ecb1f7fc2cfb8483a229ec05b1faca6c4431f47487a241ef5","last_reissued_at":"2026-05-18T02:08:05.273652Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:05.273652Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.2595","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":"2026-05-18T02:08:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dwyXEEY0Cx4e5dXKSGUlFYCqj/vsVXxDKQj7KnfMmakC7DjgeZtLtOoToiM19HuKEP7bvEo0z5Q198PIgNZOBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:21:13.433679Z"},"content_sha256":"6b2e5b337de8bd16eb3857aa3adb38fa3c624586beee1b01805cbd0e59ee4d16","schema_version":"1.0","event_id":"sha256:6b2e5b337de8bd16eb3857aa3adb38fa3c624586beee1b01805cbd0e59ee4d16"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:EOS77MKV66AD5SY7P7BM7OCIHI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Planck pre-launch status: High Frequency Instrument polarization calibration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"A. Catalano, A. Lange, B. Maffei, B. P. Crill, C. Leroy, C. Rosset, D. Yvon, E. Pointecouteau, F. Couchot, F. Noviello, F. Pajot, F. Piacentini, F.-X. D\\'esert, G. Savini, I. Ristorcelli, J. Ha\\\"issinski, J.-L. Puget, J. Mac\\'ias-P\\'erez, J.-M. Lamarre, K. Ganga, L. Conversi, L. Montier, M.-A. Miville-Desch\\^enes, M. Giard, M. Piat, M. Tristram, M. Veneziani, N. Ponthieu, O. Perdereau, P. Ade, P. de Marcillac, R. Sudiwala, S. Henrot-Versill\\'e, S. Plaszczynski, W. C. Jones, W. Holmes, Y. Giraud-H\\'eraud","submitted_at":"2010-04-15T10:17:08Z","abstract_excerpt":"The High Frequency Instrument of Planck will map the entire sky in the millimeter and sub-millimeter domain from 100 to 857 GHz with unprecedented sensitivity to polarization ($\\Delta P/T_{\\tiny cmb} \\sim 4\\cdot 10^{-6}$) at 100, 143, 217 and 353 GHz.  It will lead to major improvements in our understanding of the Cosmic Microwave Background anisotropies and polarized foreground signals. Planck will make high resolution measurements of the $E$-mode spectrum (up to $\\ell \\sim 1500$) and will also play a prominent role in the search for the faint imprint of primordial gravitational waves on the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.2595","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":"2026-05-18T02:08:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F1Ro+42VbQ3/MSrbjlHGIHMU8eUsqCvRWycxKifCfONotVOZOydopdNh026NNuaM8VX1J77CCPCU95VJPpclBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:21:13.434098Z"},"content_sha256":"6bf73a0f0c7f55e5f7bcd3aeec372604a172a0aeb74aeaab45f72a44940a4497","schema_version":"1.0","event_id":"sha256:6bf73a0f0c7f55e5f7bcd3aeec372604a172a0aeb74aeaab45f72a44940a4497"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EOS77MKV66AD5SY7P7BM7OCIHI/bundle.json","state_url":"https://pith.science/pith/EOS77MKV66AD5SY7P7BM7OCIHI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EOS77MKV66AD5SY7P7BM7OCIHI/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":"2026-05-27T20:21:13Z","links":{"resolver":"https://pith.science/pith/EOS77MKV66AD5SY7P7BM7OCIHI","bundle":"https://pith.science/pith/EOS77MKV66AD5SY7P7BM7OCIHI/bundle.json","state":"https://pith.science/pith/EOS77MKV66AD5SY7P7BM7OCIHI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EOS77MKV66AD5SY7P7BM7OCIHI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:EOS77MKV66AD5SY7P7BM7OCIHI","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":"d1503aa21853efe521261e63641072077140b982aec841b55c756a1de4ede231","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-04-15T10:17:08Z","title_canon_sha256":"04a5f0f254035a4989d8ad75fd669423bcfe456f34e092ac9e672f4dc90ddd7b"},"schema_version":"1.0","source":{"id":"1004.2595","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.2595","created_at":"2026-05-18T02:08:05Z"},{"alias_kind":"arxiv_version","alias_value":"1004.2595v1","created_at":"2026-05-18T02:08:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.2595","created_at":"2026-05-18T02:08:05Z"},{"alias_kind":"pith_short_12","alias_value":"EOS77MKV66AD","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"EOS77MKV66AD5SY7","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"EOS77MKV","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:6bf73a0f0c7f55e5f7bcd3aeec372604a172a0aeb74aeaab45f72a44940a4497","target":"graph","created_at":"2026-05-18T02:08:05Z","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 High Frequency Instrument of Planck will map the entire sky in the millimeter and sub-millimeter domain from 100 to 857 GHz with unprecedented sensitivity to polarization ($\\Delta P/T_{\\tiny cmb} \\sim 4\\cdot 10^{-6}$) at 100, 143, 217 and 353 GHz.  It will lead to major improvements in our understanding of the Cosmic Microwave Background anisotropies and polarized foreground signals. Planck will make high resolution measurements of the $E$-mode spectrum (up to $\\ell \\sim 1500$) and will also play a prominent role in the search for the faint imprint of primordial gravitational waves on the ","authors_text":"A. Catalano, A. Lange, B. Maffei, B. P. Crill, C. Leroy, C. Rosset, D. Yvon, E. Pointecouteau, F. Couchot, F. Noviello, F. Pajot, F. Piacentini, F.-X. D\\'esert, G. Savini, I. Ristorcelli, J. Ha\\\"issinski, J.-L. Puget, J. Mac\\'ias-P\\'erez, J.-M. Lamarre, K. Ganga, L. Conversi, L. Montier, M.-A. Miville-Desch\\^enes, M. Giard, M. Piat, M. Tristram, M. Veneziani, N. Ponthieu, O. Perdereau, P. Ade, P. de Marcillac, R. Sudiwala, S. Henrot-Versill\\'e, S. Plaszczynski, W. C. Jones, W. Holmes, Y. Giraud-H\\'eraud","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-04-15T10:17:08Z","title":"Planck pre-launch status: High Frequency Instrument polarization calibration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.2595","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":"sha256:6b2e5b337de8bd16eb3857aa3adb38fa3c624586beee1b01805cbd0e59ee4d16","target":"record","created_at":"2026-05-18T02:08:05Z","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":"d1503aa21853efe521261e63641072077140b982aec841b55c756a1de4ede231","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-04-15T10:17:08Z","title_canon_sha256":"04a5f0f254035a4989d8ad75fd669423bcfe456f34e092ac9e672f4dc90ddd7b"},"schema_version":"1.0","source":{"id":"1004.2595","kind":"arxiv","version":1}},"canonical_sha256":"23a5ffb155f7803ecb1f7fc2cfb8483a229ec05b1faca6c4431f47487a241ef5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23a5ffb155f7803ecb1f7fc2cfb8483a229ec05b1faca6c4431f47487a241ef5","first_computed_at":"2026-05-18T02:08:05.273652Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:05.273652Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s123vvSCFRW5s8XQyqRdgawUyTdWEdTxtN4AXO0tpASAf1NTbzs4a2IglfiAXiVWm8UWTM1N9WuQEYlrGemeCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:05.274430Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.2595","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b2e5b337de8bd16eb3857aa3adb38fa3c624586beee1b01805cbd0e59ee4d16","sha256:6bf73a0f0c7f55e5f7bcd3aeec372604a172a0aeb74aeaab45f72a44940a4497"],"state_sha256":"e4c6cbb2ad12cef80796f1321170143b0d584871e4cec3cd378485a64f711953"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iKUeDUb815W/qFDe5Oe2X+ztMiVr9PHsddFGbKgus6w5Kfd1TI/fhwebn2v/52eqsioUZ/TZp7iC+OCeV1ntCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T20:21:13.436785Z","bundle_sha256":"9b79ee138539f4c257f69e94001fa0f00ad88988acc01008587b35b2eb207ed3"}}