{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:QM3MDXJ5OD5U7RHEJNXANORTYS","short_pith_number":"pith:QM3MDXJ5","canonical_record":{"source":{"id":"1109.0574","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-02T23:03:57Z","cross_cats_sorted":[],"title_canon_sha256":"d5348651aba3631aad435c2708b9c1990c918922a20c844d439314f5edd57c0b","abstract_canon_sha256":"b228793c4e69010b47b8b467289c65974cadf8350a8245e63db4b6d995e37521"},"schema_version":"1.0"},"canonical_sha256":"8336c1dd3d70fb4fc4e44b6e06ba33c4b47581b9f523b6d9bb59ea06e166933b","source":{"kind":"arxiv","id":"1109.0574","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0574","created_at":"2026-05-18T02:00:42Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0574v3","created_at":"2026-05-18T02:00:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0574","created_at":"2026-05-18T02:00:42Z"},{"alias_kind":"pith_short_12","alias_value":"QM3MDXJ5OD5U","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QM3MDXJ5OD5U7RHE","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QM3MDXJ5","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:QM3MDXJ5OD5U7RHEJNXANORTYS","target":"record","payload":{"canonical_record":{"source":{"id":"1109.0574","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-02T23:03:57Z","cross_cats_sorted":[],"title_canon_sha256":"d5348651aba3631aad435c2708b9c1990c918922a20c844d439314f5edd57c0b","abstract_canon_sha256":"b228793c4e69010b47b8b467289c65974cadf8350a8245e63db4b6d995e37521"},"schema_version":"1.0"},"canonical_sha256":"8336c1dd3d70fb4fc4e44b6e06ba33c4b47581b9f523b6d9bb59ea06e166933b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:42.339449Z","signature_b64":"pzzn0BZOcD2zLpWnvnw0IGCCJ+IkO1g/LyCdDjmQmXPAv8FNeqg0u8Cq1GRFxi+HxbeelyRkFaiNg7AJMm33DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8336c1dd3d70fb4fc4e44b6e06ba33c4b47581b9f523b6d9bb59ea06e166933b","last_reissued_at":"2026-05-18T02:00:42.338806Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:42.338806Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.0574","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:00:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cLkTquJKox58P1mZxEEeyNSKKUBtcPRG7KDLruwK/7ooU9P1eDxSsFF7DamJ179F96q84itOSSv8j6Aslar3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:44:01.180727Z"},"content_sha256":"b58632e92673062ad974636c8854dcc2ccdccbc27ee9d06268d9d8b7a88defca","schema_version":"1.0","event_id":"sha256:b58632e92673062ad974636c8854dcc2ccdccbc27ee9d06268d9d8b7a88defca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:QM3MDXJ5OD5U7RHEJNXANORTYS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detecting the Highest Redshift (z > 8) QSOs in a Wide, Near Infrared Slitless Spectroscopic Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Andrea Cimatti, Bianca Garilli, Emanuel Rossetti, Giovanni Zamorani, Nathan Roche, Paolo Franzetti","submitted_at":"2011-09-02T23:03:57Z","abstract_excerpt":"We investigate the prospects of extending observations of high redshift QSOs to z>8 by means of a very wide-area near-infrared slitless spectroscopic survey, e.g. the planned survey with the European Space Agency's Euclid telescope. For any QSOs at z>8.06 the strong Lyman-alpha line will enter the wavelength range of the Euclid near-infrared spectrometer and imaging photometer (NISP). We perform a detailed simulation of Euclid NISP slitless spectroscopy (with the parameters of the wide survey) in an artificial field containing QSO spectra at all redshifts up to z=12. The simulation spectra are"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0574","kind":"arxiv","version":3},"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":"2026-05-18T02:00:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ceUgzgHcrVKMvEzzSpU4vTc81Y/RCkrM6WsCN9skZuVs5pwfmNnoJziPoYUN9Z43aSqab9XB5WP2gq7s5qq9Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:44:01.181435Z"},"content_sha256":"7632cf4eb320c0e9072072adc4f9bf8dfd4ddd83e3ff75cc663222780925c06f","schema_version":"1.0","event_id":"sha256:7632cf4eb320c0e9072072adc4f9bf8dfd4ddd83e3ff75cc663222780925c06f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QM3MDXJ5OD5U7RHEJNXANORTYS/bundle.json","state_url":"https://pith.science/pith/QM3MDXJ5OD5U7RHEJNXANORTYS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QM3MDXJ5OD5U7RHEJNXANORTYS/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":"2026-05-29T17:44:01Z","links":{"resolver":"https://pith.science/pith/QM3MDXJ5OD5U7RHEJNXANORTYS","bundle":"https://pith.science/pith/QM3MDXJ5OD5U7RHEJNXANORTYS/bundle.json","state":"https://pith.science/pith/QM3MDXJ5OD5U7RHEJNXANORTYS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QM3MDXJ5OD5U7RHEJNXANORTYS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:QM3MDXJ5OD5U7RHEJNXANORTYS","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":"b228793c4e69010b47b8b467289c65974cadf8350a8245e63db4b6d995e37521","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-02T23:03:57Z","title_canon_sha256":"d5348651aba3631aad435c2708b9c1990c918922a20c844d439314f5edd57c0b"},"schema_version":"1.0","source":{"id":"1109.0574","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.0574","created_at":"2026-05-18T02:00:42Z"},{"alias_kind":"arxiv_version","alias_value":"1109.0574v3","created_at":"2026-05-18T02:00:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.0574","created_at":"2026-05-18T02:00:42Z"},{"alias_kind":"pith_short_12","alias_value":"QM3MDXJ5OD5U","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QM3MDXJ5OD5U7RHE","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QM3MDXJ5","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:7632cf4eb320c0e9072072adc4f9bf8dfd4ddd83e3ff75cc663222780925c06f","target":"graph","created_at":"2026-05-18T02:00:42Z","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 investigate the prospects of extending observations of high redshift QSOs to z>8 by means of a very wide-area near-infrared slitless spectroscopic survey, e.g. the planned survey with the European Space Agency's Euclid telescope. For any QSOs at z>8.06 the strong Lyman-alpha line will enter the wavelength range of the Euclid near-infrared spectrometer and imaging photometer (NISP). We perform a detailed simulation of Euclid NISP slitless spectroscopy (with the parameters of the wide survey) in an artificial field containing QSO spectra at all redshifts up to z=12. The simulation spectra are","authors_text":"Andrea Cimatti, Bianca Garilli, Emanuel Rossetti, Giovanni Zamorani, Nathan Roche, Paolo Franzetti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-02T23:03:57Z","title":"Detecting the Highest Redshift (z > 8) QSOs in a Wide, Near Infrared Slitless Spectroscopic Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.0574","kind":"arxiv","version":3},"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:b58632e92673062ad974636c8854dcc2ccdccbc27ee9d06268d9d8b7a88defca","target":"record","created_at":"2026-05-18T02:00:42Z","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":"b228793c4e69010b47b8b467289c65974cadf8350a8245e63db4b6d995e37521","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-09-02T23:03:57Z","title_canon_sha256":"d5348651aba3631aad435c2708b9c1990c918922a20c844d439314f5edd57c0b"},"schema_version":"1.0","source":{"id":"1109.0574","kind":"arxiv","version":3}},"canonical_sha256":"8336c1dd3d70fb4fc4e44b6e06ba33c4b47581b9f523b6d9bb59ea06e166933b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8336c1dd3d70fb4fc4e44b6e06ba33c4b47581b9f523b6d9bb59ea06e166933b","first_computed_at":"2026-05-18T02:00:42.338806Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:42.338806Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pzzn0BZOcD2zLpWnvnw0IGCCJ+IkO1g/LyCdDjmQmXPAv8FNeqg0u8Cq1GRFxi+HxbeelyRkFaiNg7AJMm33DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:42.339449Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.0574","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b58632e92673062ad974636c8854dcc2ccdccbc27ee9d06268d9d8b7a88defca","sha256:7632cf4eb320c0e9072072adc4f9bf8dfd4ddd83e3ff75cc663222780925c06f"],"state_sha256":"bc72de48dce18ac760dd1fb95a5c5c78ec3be81ce24f452ee80fe8626bb00c70"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pgU/Bvb+nMmFHo5HBxZBC6o6GWEB7F6ZfE2feGwkvrE/FFM0He8sdB+VpDLApA1nziNFEHSgsPPpfvrWpeAkDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T17:44:01.185111Z","bundle_sha256":"46384f18a44bb0b18a063ac537e9eb071983d5b900bd91fdf2fab38b7dabdcfe"}}