{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:I47WMV36HHACDRI2HDM4RQJI2T","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":"7d41826680f4a5c4a1fe08508639f972e609858ef5fcf02af2264addc5ecc153","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-03-13T15:09:21Z","title_canon_sha256":"eb95d9fc60ebd2f796c24ef52ee0ea1f901e3e7430eee7bf8185657b1668bf54"},"schema_version":"1.0","source":{"id":"2403.12796","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.12796","created_at":"2026-07-05T07:58:07Z"},{"alias_kind":"arxiv_version","alias_value":"2403.12796v1","created_at":"2026-07-05T07:58:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.12796","created_at":"2026-07-05T07:58:07Z"},{"alias_kind":"pith_short_12","alias_value":"I47WMV36HHAC","created_at":"2026-07-05T07:58:07Z"},{"alias_kind":"pith_short_16","alias_value":"I47WMV36HHACDRI2","created_at":"2026-07-05T07:58:07Z"},{"alias_kind":"pith_short_8","alias_value":"I47WMV36","created_at":"2026-07-05T07:58:07Z"}],"graph_snapshots":[{"event_id":"sha256:fa54683d8efe9d5fa75db721718962fed619fcc7ddd7b958b56660507a1d682e","target":"graph","created_at":"2026-07-05T07:58:07Z","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/2403.12796/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A critical discussion on the $H_0$ Hubble constant tension is presented by considering both early and late-type observations. From recent precise measurements, discrepancies emerge when comparing results for some cosmological quantities obtained at different redshifts. We highlight the most relevant measurements of $H_0$ and propose potential ideas to solve its tension. These solutions concern the exploration of new physics beyond the $\\Lambda$CDM model or the evaluation of $H_0$ by other methods. In particular, we focus on the role of the look-back time.","authors_text":"Giulia De Somma, Giuseppe Sarracino, Salvatore Capozziello","cross_cats":["astro-ph.CO","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-03-13T15:09:21Z","title":"A critical discussion on the $H_0$ tension"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.12796","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:b02792c5db0efade76e5d7c1f5a7ca0fe7a8143ce4510cae06e7edceea13a66c","target":"record","created_at":"2026-07-05T07:58:07Z","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":"7d41826680f4a5c4a1fe08508639f972e609858ef5fcf02af2264addc5ecc153","cross_cats_sorted":["astro-ph.CO","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-03-13T15:09:21Z","title_canon_sha256":"eb95d9fc60ebd2f796c24ef52ee0ea1f901e3e7430eee7bf8185657b1668bf54"},"schema_version":"1.0","source":{"id":"2403.12796","kind":"arxiv","version":1}},"canonical_sha256":"473f66577e39c021c51a38d9c8c128d4fe071e8312f8f8efe4a6ffcaab671cf2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"473f66577e39c021c51a38d9c8c128d4fe071e8312f8f8efe4a6ffcaab671cf2","first_computed_at":"2026-07-05T07:58:07.692940Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:58:07.692940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"inKDD14HJIL0ajAVnrbOu1ZK8bQVeBGHOY3RXiNfXHTwIXRHFv0YM08b3d4/OsPvzgM+3czDB11Xwizoz7S1CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:58:07.693340Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.12796","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b02792c5db0efade76e5d7c1f5a7ca0fe7a8143ce4510cae06e7edceea13a66c","sha256:fa54683d8efe9d5fa75db721718962fed619fcc7ddd7b958b56660507a1d682e"],"state_sha256":"474002854a62aee3df7a7e7d2fb4861d6203c31bfbb0b9392aa95cbb79bf00c4"}