{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WTB4J375NBXTIAIVY7XPUJJ3DW","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":"07784f799ae907b8bfd576241adbffcd49487ebb1674cf23db726b3becb9b3ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T14:35:40Z","title_canon_sha256":"160957f050b57731b545e4a378ff584532e7c80eafa5493508de56e809c7754a"},"schema_version":"1.0","source":{"id":"1709.09055","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.09055","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"arxiv_version","alias_value":"1709.09055v1","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.09055","created_at":"2026-05-18T00:34:21Z"},{"alias_kind":"pith_short_12","alias_value":"WTB4J375NBXT","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WTB4J375NBXTIAIV","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WTB4J375","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:a14f4e6d2012c9578a3a66d0c9e94836e17050c5de0943d000b61307851efa5a","target":"graph","created_at":"2026-05-18T00:34:21Z","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":"One application of the Cosmological Gravitational Lensing in General Relativity is the measurement of the Hubble constant H_0 using the time delay Delta t between multiple images of lensed quasars. This method has already been applied, obtaining a value of H_0 compatible with that obtained from the SNe 1A, but non compatible with that obtained studying the anisotropies of the CMB. This difference could be a statistical fluctuation or an indication of new physics beyond the Standard Model of Cosmology, so it desirable to improve the precision of the measurements. At the current technological ca","authors_text":"Marco Bonici, Nicola Alchera, Nicola Maggiore","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T14:35:40Z","title":"Towards a new proposal for the time delay in gravitational lensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.09055","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:fa888b160b591dcf35b255ca5fdb41d568b5d5a6bc337cbbb42818b583e85f68","target":"record","created_at":"2026-05-18T00:34:21Z","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":"07784f799ae907b8bfd576241adbffcd49487ebb1674cf23db726b3becb9b3ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-26T14:35:40Z","title_canon_sha256":"160957f050b57731b545e4a378ff584532e7c80eafa5493508de56e809c7754a"},"schema_version":"1.0","source":{"id":"1709.09055","kind":"arxiv","version":1}},"canonical_sha256":"b4c3c4effd686f340115c7eefa253b1da05f42ecf25e0d435f0eae9d1114eca7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4c3c4effd686f340115c7eefa253b1da05f42ecf25e0d435f0eae9d1114eca7","first_computed_at":"2026-05-18T00:34:21.281150Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:34:21.281150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C2eBYBZWAha3JBZrviwdZEhZ+LKGS0rgUrBAJM7+Ap7xaXLr1w6hdOqsC7Wptyowu0Ec1FTsX6yP4usP68d7CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:34:21.281546Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.09055","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa888b160b591dcf35b255ca5fdb41d568b5d5a6bc337cbbb42818b583e85f68","sha256:a14f4e6d2012c9578a3a66d0c9e94836e17050c5de0943d000b61307851efa5a"],"state_sha256":"4ab180e1afa6da2b2945f38863acb5b5d7a74ab3fd57e6cdaff7b144861dc91e"}