{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:3VDVWMNVM7LWQ3PTPHUS7Q3AM4","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":"13e6f28fd3d6246b861d74332a90fe333c36e5a20468a10ac75b290299bc84db","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-03-25T09:24:34Z","title_canon_sha256":"1c30c6d59467335d03e73d8f2e9c4f9c0bf92d590afdcee5905c57d7966038a1"},"schema_version":"1.0","source":{"id":"2403.16562","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.16562","created_at":"2026-07-05T08:22:38Z"},{"alias_kind":"arxiv_version","alias_value":"2403.16562v1","created_at":"2026-07-05T08:22:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.16562","created_at":"2026-07-05T08:22:38Z"},{"alias_kind":"pith_short_12","alias_value":"3VDVWMNVM7LW","created_at":"2026-07-05T08:22:38Z"},{"alias_kind":"pith_short_16","alias_value":"3VDVWMNVM7LWQ3PT","created_at":"2026-07-05T08:22:38Z"},{"alias_kind":"pith_short_8","alias_value":"3VDVWMNV","created_at":"2026-07-05T08:22:38Z"}],"graph_snapshots":[{"event_id":"sha256:393a07a20de4e3624eb0b18cbb8e05a2f3234450aa427f486c74e3e261ac9054","target":"graph","created_at":"2026-07-05T08:22:38Z","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/2403.16562/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this work, we explore new constraints on phantom scalar field cosmologies with a scalar field employing early times catalogues related to CMB measurements, along with the local standard observables, like Supernovae Type Ia (SNIa), $H(z)$ measurements (Cosmic Clocks), and Baryon Acoustic Oscillations (BAO) baselines. In particular, we studied a tracker phantom field with hyperbolic polar coordinates that have been proposed in the literature. The main goal is to obtain precise cosmological constraints for $H_0$ and $\\sigma_8$, in comparison to other constructions that present tension in early","authors_text":"Celia Escamilla-Rivera, Jos\\'e Antonio N\\'ajera","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-03-25T09:24:34Z","title":"Phantom scalar field cosmologies constrained by early cosmic measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.16562","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":"sha256:88b5e38c64ca6a0f779fbbd10694cff1f7c91c97083a0abd91758efe72d2de34","target":"record","created_at":"2026-07-05T08:22:38Z","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":"13e6f28fd3d6246b861d74332a90fe333c36e5a20468a10ac75b290299bc84db","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-03-25T09:24:34Z","title_canon_sha256":"1c30c6d59467335d03e73d8f2e9c4f9c0bf92d590afdcee5905c57d7966038a1"},"schema_version":"1.0","source":{"id":"2403.16562","kind":"arxiv","version":1}},"canonical_sha256":"dd475b31b567d7686df379e92fc360671cc8aaa4646fd0a8a47c791ac9f24eff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dd475b31b567d7686df379e92fc360671cc8aaa4646fd0a8a47c791ac9f24eff","first_computed_at":"2026-07-05T08:22:38.857919Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:22:38.857919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AQZ6vbPIbguNb8T6eQwsX3fO6E0j0dzMRv4ajeBdEP1nuVVgm7dBd0vlvXQAv0AWih+r43YKMWUEaZst1QAhDw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:22:38.858424Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.16562","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88b5e38c64ca6a0f779fbbd10694cff1f7c91c97083a0abd91758efe72d2de34","sha256:393a07a20de4e3624eb0b18cbb8e05a2f3234450aa427f486c74e3e261ac9054"],"state_sha256":"8d013e563fd809b6cb7c7ee4074df3c5a5c7bab11ed9262a4b1e26c9121554cb"}