{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:TX6R6L3IKNIHVJM3TKKSVMEEPC","short_pith_number":"pith:TX6R6L3I","canonical_record":{"source":{"id":"1402.3220","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-13T17:04:15Z","cross_cats_sorted":[],"title_canon_sha256":"f254b401f583cb012f839d00780f4d7c836a2fb1602b3055c2bbb4c341d1f930","abstract_canon_sha256":"fc8e38669bf1a662f122e352f106d293a0668428599b4fd8adc1ca53db6c0203"},"schema_version":"1.0"},"canonical_sha256":"9dfd1f2f6853507aa59b9a952ab084788af5190f4ba2066f1207342bb63e5c7d","source":{"kind":"arxiv","id":"1402.3220","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.3220","created_at":"2026-05-18T02:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1402.3220v2","created_at":"2026-05-18T02:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3220","created_at":"2026-05-18T02:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"TX6R6L3IKNIH","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"TX6R6L3IKNIHVJM3","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"TX6R6L3I","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:TX6R6L3IKNIHVJM3TKKSVMEEPC","target":"record","payload":{"canonical_record":{"source":{"id":"1402.3220","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-13T17:04:15Z","cross_cats_sorted":[],"title_canon_sha256":"f254b401f583cb012f839d00780f4d7c836a2fb1602b3055c2bbb4c341d1f930","abstract_canon_sha256":"fc8e38669bf1a662f122e352f106d293a0668428599b4fd8adc1ca53db6c0203"},"schema_version":"1.0"},"canonical_sha256":"9dfd1f2f6853507aa59b9a952ab084788af5190f4ba2066f1207342bb63e5c7d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:50:24.104496Z","signature_b64":"tu+vPHsFAGO5YWeSmc4zxiTMbEEhok1VWt+SzmVdCj+6nwWuOFhanjkIfp4IoA4Z4tXNeE3g7ppJnq5GT6MeBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9dfd1f2f6853507aa59b9a952ab084788af5190f4ba2066f1207342bb63e5c7d","last_reissued_at":"2026-05-18T02:50:24.103865Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:50:24.103865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.3220","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LfhEBgg03wQRLVTiL5GoMyN1j/KUfD+a/cLA41t/O2WPa4PgTf29A2i/6iz1w+Uj+OGHbMN2n8k/9vEeQosLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:23:00.456214Z"},"content_sha256":"74ac88a9d14f5728e71c1a19ad8ec22970b9510d8c0842e8b7899ef54b96f8f8","schema_version":"1.0","event_id":"sha256:74ac88a9d14f5728e71c1a19ad8ec22970b9510d8c0842e8b7899ef54b96f8f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:TX6R6L3IKNIHVJM3TKKSVMEEPC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precise photometric redshifts with a narrow-band filter set: The PAU Survey at the William Herschel Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Carles S\\'anchez, Enrique Gazta\\~naga, Francisco J. Castander, Martin Eriksen, Pol Mart\\'i, Ramon Miquel","submitted_at":"2014-02-13T17:04:15Z","abstract_excerpt":"The Physics of the Accelerating Universe (PAU) survey at the William Herschel Telescope (WHT) will use a new optical camera (PAUCam) with a large set of narrow-band filters to perform a photometric galaxy survey with a quasi-spectroscopic redshift precision of \\sigma(z)/(1 + z) ~ 0.0035 and map the large-scale structure of the universe in three dimensions up to i_AB < 22.5-23.0. In this paper we present a detailed photo-z performance study using photometric simulations for 40 equally-spaced 12.5-nm-wide (FWHM) filters with a ~25% overlap and spanning the wavelength range from 450 nm to 850 nm,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3220","kind":"arxiv","version":2},"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":"2026-05-18T02:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AUA4GhLe8pmxP3BzxhiXj4TyYp2ag2oHOPAltKFEnIpAGGGf4Ka3ZAXo7MM1zw2ten0INvtVZbkBWlIOzTEbAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:23:00.456800Z"},"content_sha256":"bebfb7f9ded32b59beb4424d4d421270a35eb960381b2e7eedfb8c8d75110dce","schema_version":"1.0","event_id":"sha256:bebfb7f9ded32b59beb4424d4d421270a35eb960381b2e7eedfb8c8d75110dce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TX6R6L3IKNIHVJM3TKKSVMEEPC/bundle.json","state_url":"https://pith.science/pith/TX6R6L3IKNIHVJM3TKKSVMEEPC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TX6R6L3IKNIHVJM3TKKSVMEEPC/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":"2026-05-26T20:23:00Z","links":{"resolver":"https://pith.science/pith/TX6R6L3IKNIHVJM3TKKSVMEEPC","bundle":"https://pith.science/pith/TX6R6L3IKNIHVJM3TKKSVMEEPC/bundle.json","state":"https://pith.science/pith/TX6R6L3IKNIHVJM3TKKSVMEEPC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TX6R6L3IKNIHVJM3TKKSVMEEPC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:TX6R6L3IKNIHVJM3TKKSVMEEPC","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":"fc8e38669bf1a662f122e352f106d293a0668428599b4fd8adc1ca53db6c0203","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-13T17:04:15Z","title_canon_sha256":"f254b401f583cb012f839d00780f4d7c836a2fb1602b3055c2bbb4c341d1f930"},"schema_version":"1.0","source":{"id":"1402.3220","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.3220","created_at":"2026-05-18T02:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1402.3220v2","created_at":"2026-05-18T02:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3220","created_at":"2026-05-18T02:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"TX6R6L3IKNIH","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"TX6R6L3IKNIHVJM3","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"TX6R6L3I","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:bebfb7f9ded32b59beb4424d4d421270a35eb960381b2e7eedfb8c8d75110dce","target":"graph","created_at":"2026-05-18T02:50:24Z","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 Physics of the Accelerating Universe (PAU) survey at the William Herschel Telescope (WHT) will use a new optical camera (PAUCam) with a large set of narrow-band filters to perform a photometric galaxy survey with a quasi-spectroscopic redshift precision of \\sigma(z)/(1 + z) ~ 0.0035 and map the large-scale structure of the universe in three dimensions up to i_AB < 22.5-23.0. In this paper we present a detailed photo-z performance study using photometric simulations for 40 equally-spaced 12.5-nm-wide (FWHM) filters with a ~25% overlap and spanning the wavelength range from 450 nm to 850 nm,","authors_text":"Carles S\\'anchez, Enrique Gazta\\~naga, Francisco J. Castander, Martin Eriksen, Pol Mart\\'i, Ramon Miquel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-13T17:04:15Z","title":"Precise photometric redshifts with a narrow-band filter set: The PAU Survey at the William Herschel Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3220","kind":"arxiv","version":2},"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":"sha256:74ac88a9d14f5728e71c1a19ad8ec22970b9510d8c0842e8b7899ef54b96f8f8","target":"record","created_at":"2026-05-18T02:50:24Z","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":"fc8e38669bf1a662f122e352f106d293a0668428599b4fd8adc1ca53db6c0203","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-02-13T17:04:15Z","title_canon_sha256":"f254b401f583cb012f839d00780f4d7c836a2fb1602b3055c2bbb4c341d1f930"},"schema_version":"1.0","source":{"id":"1402.3220","kind":"arxiv","version":2}},"canonical_sha256":"9dfd1f2f6853507aa59b9a952ab084788af5190f4ba2066f1207342bb63e5c7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9dfd1f2f6853507aa59b9a952ab084788af5190f4ba2066f1207342bb63e5c7d","first_computed_at":"2026-05-18T02:50:24.103865Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:50:24.103865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tu+vPHsFAGO5YWeSmc4zxiTMbEEhok1VWt+SzmVdCj+6nwWuOFhanjkIfp4IoA4Z4tXNeE3g7ppJnq5GT6MeBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:50:24.104496Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.3220","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74ac88a9d14f5728e71c1a19ad8ec22970b9510d8c0842e8b7899ef54b96f8f8","sha256:bebfb7f9ded32b59beb4424d4d421270a35eb960381b2e7eedfb8c8d75110dce"],"state_sha256":"d0b0fa808dbb7a007541c2b2e2cfb0eb4735eb66477968d540161428001575e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oq37Md79ru8OmmTfWBNG9dP+PnF3dj3C3zuNb4QdyIlDgZh12hPmfD0R9rt2BzjfOSTv/BFDwsSq7VV3olI5Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T20:23:00.459100Z","bundle_sha256":"5685e12569bc95d54517cf8aef99bc16aa81c75f57c4257db80dc0044e6e2af7"}}