{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GB54WWJS7S67JLOE5SZBQKN2VZ","short_pith_number":"pith:GB54WWJS","canonical_record":{"source":{"id":"1703.09239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-27T18:00:52Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"e233575dfce375e52d763ebdda5cd4dabd07a9033c52e0d98a70b0eeeb9f7f9d","abstract_canon_sha256":"10ac3a8a4b5cf610fe1bc72d63c3319abdd4dd0b4ca094005b9bf25ef513880c"},"schema_version":"1.0"},"canonical_sha256":"307bcb5932fcbdf4adc4ecb21829baae750d8bf69b95b386e329c999aad4b483","source":{"kind":"arxiv","id":"1703.09239","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.09239","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"arxiv_version","alias_value":"1703.09239v1","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.09239","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"pith_short_12","alias_value":"GB54WWJS7S67","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GB54WWJS7S67JLOE","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GB54WWJS","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GB54WWJS7S67JLOE5SZBQKN2VZ","target":"record","payload":{"canonical_record":{"source":{"id":"1703.09239","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-27T18:00:52Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"e233575dfce375e52d763ebdda5cd4dabd07a9033c52e0d98a70b0eeeb9f7f9d","abstract_canon_sha256":"10ac3a8a4b5cf610fe1bc72d63c3319abdd4dd0b4ca094005b9bf25ef513880c"},"schema_version":"1.0"},"canonical_sha256":"307bcb5932fcbdf4adc4ecb21829baae750d8bf69b95b386e329c999aad4b483","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:47:45.123385Z","signature_b64":"/9Y2CTJIYOj2q0uyc1xlUTHcfDRAVWxKv31MpI6XRJCC/9Ve67b9Wd9ddYkXD4n8X2KIbEPaeRlXB2LaLi4WCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"307bcb5932fcbdf4adc4ecb21829baae750d8bf69b95b386e329c999aad4b483","last_reissued_at":"2026-05-18T00:47:45.122716Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:47:45.122716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.09239","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":"2026-05-18T00:47:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fzMa7rjMtNaRXXD7iLhHWs3t74PVeuz67CoLCgMJ4Bv52IfiPqtWZQqQZJw7ICPEYD4UtcogPQvWKnZr749yAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:48:24.060698Z"},"content_sha256":"895e33b864bca0318ba06444ed8acd940fe922241f5086b8b5c76a93c218ff54","schema_version":"1.0","event_id":"sha256:895e33b864bca0318ba06444ed8acd940fe922241f5086b8b5c76a93c218ff54"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GB54WWJS7S67JLOE5SZBQKN2VZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"IFS-RedEx, a redshift extraction software for integral-field spectrographs: Application to MUSE data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.IM","authors_text":"Jean-Paul Kneib, Johan Richard, Markus Rexroth, R\\'emy Joseph, Romaric Her","submitted_at":"2017-03-27T18:00:52Z","abstract_excerpt":"We present IFS-RedEx, a spectrum and redshift extraction pipeline for integral-field spectrographs. A key feature of the tool is a wavelet-based spectrum cleaner. It identifies reliable spectral features, reconstructs their shapes, and suppresses the spectrum noise. This gives the technique an advantage over conventional methods like Gaussian filtering, which only smears out the signal. As a result, the wavelet-based cleaning allows the quick identification of true spectral features. We test the cleaning technique with degraded MUSE spectra and find that it can detect spectrum peaks down to S/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.09239","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":"2026-05-18T00:47:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kgxmaEplJJAMPoo4wgGklR0NHVrXFqLflmvF+rL52fxDhVJBqfOcwyZuCO+v4NlfGcGViC7zMKUBY1MOyLaYAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:48:24.061360Z"},"content_sha256":"98065109812afcd20d00e93cfc5997f0989e8d5aa16fd6874da0114155f33195","schema_version":"1.0","event_id":"sha256:98065109812afcd20d00e93cfc5997f0989e8d5aa16fd6874da0114155f33195"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GB54WWJS7S67JLOE5SZBQKN2VZ/bundle.json","state_url":"https://pith.science/pith/GB54WWJS7S67JLOE5SZBQKN2VZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GB54WWJS7S67JLOE5SZBQKN2VZ/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":"2026-05-28T20:48:24Z","links":{"resolver":"https://pith.science/pith/GB54WWJS7S67JLOE5SZBQKN2VZ","bundle":"https://pith.science/pith/GB54WWJS7S67JLOE5SZBQKN2VZ/bundle.json","state":"https://pith.science/pith/GB54WWJS7S67JLOE5SZBQKN2VZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GB54WWJS7S67JLOE5SZBQKN2VZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GB54WWJS7S67JLOE5SZBQKN2VZ","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":"10ac3a8a4b5cf610fe1bc72d63c3319abdd4dd0b4ca094005b9bf25ef513880c","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-27T18:00:52Z","title_canon_sha256":"e233575dfce375e52d763ebdda5cd4dabd07a9033c52e0d98a70b0eeeb9f7f9d"},"schema_version":"1.0","source":{"id":"1703.09239","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.09239","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"arxiv_version","alias_value":"1703.09239v1","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.09239","created_at":"2026-05-18T00:47:45Z"},{"alias_kind":"pith_short_12","alias_value":"GB54WWJS7S67","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"GB54WWJS7S67JLOE","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"GB54WWJS","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:98065109812afcd20d00e93cfc5997f0989e8d5aa16fd6874da0114155f33195","target":"graph","created_at":"2026-05-18T00:47:45Z","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 present IFS-RedEx, a spectrum and redshift extraction pipeline for integral-field spectrographs. A key feature of the tool is a wavelet-based spectrum cleaner. It identifies reliable spectral features, reconstructs their shapes, and suppresses the spectrum noise. This gives the technique an advantage over conventional methods like Gaussian filtering, which only smears out the signal. As a result, the wavelet-based cleaning allows the quick identification of true spectral features. We test the cleaning technique with degraded MUSE spectra and find that it can detect spectrum peaks down to S/","authors_text":"Jean-Paul Kneib, Johan Richard, Markus Rexroth, R\\'emy Joseph, Romaric Her","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-27T18:00:52Z","title":"IFS-RedEx, a redshift extraction software for integral-field spectrographs: Application to MUSE data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.09239","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":"sha256:895e33b864bca0318ba06444ed8acd940fe922241f5086b8b5c76a93c218ff54","target":"record","created_at":"2026-05-18T00:47:45Z","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":"10ac3a8a4b5cf610fe1bc72d63c3319abdd4dd0b4ca094005b9bf25ef513880c","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-03-27T18:00:52Z","title_canon_sha256":"e233575dfce375e52d763ebdda5cd4dabd07a9033c52e0d98a70b0eeeb9f7f9d"},"schema_version":"1.0","source":{"id":"1703.09239","kind":"arxiv","version":1}},"canonical_sha256":"307bcb5932fcbdf4adc4ecb21829baae750d8bf69b95b386e329c999aad4b483","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"307bcb5932fcbdf4adc4ecb21829baae750d8bf69b95b386e329c999aad4b483","first_computed_at":"2026-05-18T00:47:45.122716Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:45.122716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/9Y2CTJIYOj2q0uyc1xlUTHcfDRAVWxKv31MpI6XRJCC/9Ve67b9Wd9ddYkXD4n8X2KIbEPaeRlXB2LaLi4WCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:45.123385Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.09239","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:895e33b864bca0318ba06444ed8acd940fe922241f5086b8b5c76a93c218ff54","sha256:98065109812afcd20d00e93cfc5997f0989e8d5aa16fd6874da0114155f33195"],"state_sha256":"f65bd2c501c2d1bd0554bee52e536e426b680b768289ebc5d385abd2c28135dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uCM2TuteVTjRECfFyP+Pp/WvA7QoMTx0BNwge/kxcsEQbxQ5H7tBvz9u6lRh1J+QiyKbRLRgZrpILbtECLdfDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:48:24.064900Z","bundle_sha256":"69683f9a1947b0ad7f8e08f92ce08ddf8d95707030429f1b6a466000cebd21f2"}}