{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:V6CV5VWFGLQXE3OZ4A4AAORBEF","short_pith_number":"pith:V6CV5VWF","canonical_record":{"source":{"id":"0802.1532","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2008-02-11T21:56:00Z","cross_cats_sorted":[],"title_canon_sha256":"d20405b8a90f5fb5588920c46f6c8fef6709706b922076ec54b60fda1afc71d7","abstract_canon_sha256":"6041a36797185a15103a9e9e805d2566359a6a9ba226212b162314cf9c4d3ed4"},"schema_version":"1.0"},"canonical_sha256":"af855ed6c532e1726dd9e038003a21217cac1107ab86d75e525bfb1f31fdf453","source":{"kind":"arxiv","id":"0802.1532","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0802.1532","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"arxiv_version","alias_value":"0802.1532v1","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0802.1532","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"pith_short_12","alias_value":"V6CV5VWFGLQX","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"pith_short_16","alias_value":"V6CV5VWFGLQXE3OZ","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"pith_short_8","alias_value":"V6CV5VWF","created_at":"2026-07-04T17:09:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:V6CV5VWFGLQXE3OZ4A4AAORBEF","target":"record","payload":{"canonical_record":{"source":{"id":"0802.1532","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2008-02-11T21:56:00Z","cross_cats_sorted":[],"title_canon_sha256":"d20405b8a90f5fb5588920c46f6c8fef6709706b922076ec54b60fda1afc71d7","abstract_canon_sha256":"6041a36797185a15103a9e9e805d2566359a6a9ba226212b162314cf9c4d3ed4"},"schema_version":"1.0"},"canonical_sha256":"af855ed6c532e1726dd9e038003a21217cac1107ab86d75e525bfb1f31fdf453","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:09:15.548325Z","signature_b64":"Po9hMr0orsyKy+b594AuoiUe0N8QAo5QoY6K/vlxQeycOxVEMFotJV1lOZosBBPAdTfD+ErCu8ml5w7VbE+TBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af855ed6c532e1726dd9e038003a21217cac1107ab86d75e525bfb1f31fdf453","last_reissued_at":"2026-07-04T17:09:15.547896Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:09:15.547896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0802.1532","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":"2026-07-04T17:09:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rg1Zjkg4qU10WnO0tTzAdYqZrKDloc+Nv4kLQ4hbXKt5CjQ9XO6nTAmFkG/Ma+GCCSfmicQeBInI3uBmnDcACw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:12:48.497539Z"},"content_sha256":"67af81b0e018ba486ad116c29d808a6234f479b50b70670f4749e74af9426b6d","schema_version":"1.0","event_id":"sha256:67af81b0e018ba486ad116c29d808a6234f479b50b70670f4749e74af9426b6d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:V6CV5VWFGLQXE3OZ4A4AAORBEF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmic dynamics in the era of Extremely Large Telescopes","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Grazian, B. Delabre, C. Lovis, D. Queloz, E. Vanzella, F. Bouchy, F. Pepe, G. Avila, H. Dekker, J. Liske, L. Moscardini, L. Pasquini, M. Dessauges, M. Haehnelt, M. Mayor, M.T. Murphy, M. Viel, P. Bonifacio, P. Molaro, P. Shaver, S. Cristiani, S. D'Odorico, S. Levshakov, S. Udry, S. Zucker, T. Wiklind, V. D'Odorico","submitted_at":"2008-02-11T21:56:00Z","abstract_excerpt":"The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of this effect would represent a direct and entirely model-independent determination of the expansion history of the Universe over a redshift range that is inaccessible to other methods. Here we investigate the impact of the next generation of Extremely Large Telescopes on the feasibility of detecting and characterising the cosmological redshift drift. We consider the Lyman alpha forest in the redshif"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0802.1532","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0802.1532/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T17:09:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UBHLlkBROvabOqjbiQVEsMvSiiC2ujXlG/AU1qm2L2jUzDEVBFe8jjyIZnc0n0frl6fUrfgT5ToHic5emVpuBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:12:48.497897Z"},"content_sha256":"2ae898b50ad51c43a2212aa94fe381e78db92707c39f13639e20ddbe399cd520","schema_version":"1.0","event_id":"sha256:2ae898b50ad51c43a2212aa94fe381e78db92707c39f13639e20ddbe399cd520"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V6CV5VWFGLQXE3OZ4A4AAORBEF/bundle.json","state_url":"https://pith.science/pith/V6CV5VWFGLQXE3OZ4A4AAORBEF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V6CV5VWFGLQXE3OZ4A4AAORBEF/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":"2026-07-07T15:12:48Z","links":{"resolver":"https://pith.science/pith/V6CV5VWFGLQXE3OZ4A4AAORBEF","bundle":"https://pith.science/pith/V6CV5VWFGLQXE3OZ4A4AAORBEF/bundle.json","state":"https://pith.science/pith/V6CV5VWFGLQXE3OZ4A4AAORBEF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V6CV5VWFGLQXE3OZ4A4AAORBEF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:V6CV5VWFGLQXE3OZ4A4AAORBEF","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":"6041a36797185a15103a9e9e805d2566359a6a9ba226212b162314cf9c4d3ed4","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-02-11T21:56:00Z","title_canon_sha256":"d20405b8a90f5fb5588920c46f6c8fef6709706b922076ec54b60fda1afc71d7"},"schema_version":"1.0","source":{"id":"0802.1532","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0802.1532","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"arxiv_version","alias_value":"0802.1532v1","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0802.1532","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"pith_short_12","alias_value":"V6CV5VWFGLQX","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"pith_short_16","alias_value":"V6CV5VWFGLQXE3OZ","created_at":"2026-07-04T17:09:15Z"},{"alias_kind":"pith_short_8","alias_value":"V6CV5VWF","created_at":"2026-07-04T17:09:15Z"}],"graph_snapshots":[{"event_id":"sha256:2ae898b50ad51c43a2212aa94fe381e78db92707c39f13639e20ddbe399cd520","target":"graph","created_at":"2026-07-04T17:09:15Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0802.1532/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of this effect would represent a direct and entirely model-independent determination of the expansion history of the Universe over a redshift range that is inaccessible to other methods. Here we investigate the impact of the next generation of Extremely Large Telescopes on the feasibility of detecting and characterising the cosmological redshift drift. We consider the Lyman alpha forest in the redshif","authors_text":"A. Grazian, B. Delabre, C. Lovis, D. Queloz, E. Vanzella, F. Bouchy, F. Pepe, G. Avila, H. Dekker, J. Liske, L. Moscardini, L. Pasquini, M. Dessauges, M. Haehnelt, M. Mayor, M.T. Murphy, M. Viel, P. Bonifacio, P. Molaro, P. Shaver, S. Cristiani, S. D'Odorico, S. Levshakov, S. Udry, S. Zucker, T. Wiklind, V. D'Odorico","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2008-02-11T21:56:00Z","title":"Cosmic dynamics in the era of Extremely Large Telescopes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0802.1532","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":"sha256:67af81b0e018ba486ad116c29d808a6234f479b50b70670f4749e74af9426b6d","target":"record","created_at":"2026-07-04T17:09:15Z","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":"6041a36797185a15103a9e9e805d2566359a6a9ba226212b162314cf9c4d3ed4","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-02-11T21:56:00Z","title_canon_sha256":"d20405b8a90f5fb5588920c46f6c8fef6709706b922076ec54b60fda1afc71d7"},"schema_version":"1.0","source":{"id":"0802.1532","kind":"arxiv","version":1}},"canonical_sha256":"af855ed6c532e1726dd9e038003a21217cac1107ab86d75e525bfb1f31fdf453","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af855ed6c532e1726dd9e038003a21217cac1107ab86d75e525bfb1f31fdf453","first_computed_at":"2026-07-04T17:09:15.547896Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:09:15.547896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Po9hMr0orsyKy+b594AuoiUe0N8QAo5QoY6K/vlxQeycOxVEMFotJV1lOZosBBPAdTfD+ErCu8ml5w7VbE+TBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:09:15.548325Z","signed_message":"canonical_sha256_bytes"},"source_id":"0802.1532","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67af81b0e018ba486ad116c29d808a6234f479b50b70670f4749e74af9426b6d","sha256:2ae898b50ad51c43a2212aa94fe381e78db92707c39f13639e20ddbe399cd520"],"state_sha256":"48fafdb597377ba0ba10494d428a2430c11dfeedf6ae1c448d7c0ebd44d8e8ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RQsQI3i3X2vAMU0nxVscOuMOlo2Ar2S1wwMHfhrT/SnW8R+SuUf0R/mNxAiK4KiLxt+5PpJ+xLHcYXgh81iJCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T15:12:48.499693Z","bundle_sha256":"654797d92d97485ebe0a5b6e7863b89e5032e982512d5fd69865715bd9649434"}}