{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:DJRPTTSFLQWURSLPS2DPJL7NZ2","short_pith_number":"pith:DJRPTTSF","canonical_record":{"source":{"id":"2608.00331","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T22:39:32Z","cross_cats_sorted":[],"title_canon_sha256":"ee3769eb9a5f219698d3b463e6e73baae0fe640af2dd84563191d08d7339d814","abstract_canon_sha256":"521fb33b74b661382bfabd4eef3295477af268ce1b27b57bdb3be3318d2d48c0"},"schema_version":"1.0"},"canonical_sha256":"1a62f9ce455c2d48c96f9686f4afedceabc380b0010c0ebf571a5907a35068b6","source":{"kind":"arxiv","id":"2608.00331","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.00331","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"arxiv_version","alias_value":"2608.00331v1","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.00331","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"pith_short_12","alias_value":"DJRPTTSFLQWU","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"pith_short_16","alias_value":"DJRPTTSFLQWURSLP","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"pith_short_8","alias_value":"DJRPTTSF","created_at":"2026-08-04T00:35:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:DJRPTTSFLQWURSLPS2DPJL7NZ2","target":"record","payload":{"canonical_record":{"source":{"id":"2608.00331","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T22:39:32Z","cross_cats_sorted":[],"title_canon_sha256":"ee3769eb9a5f219698d3b463e6e73baae0fe640af2dd84563191d08d7339d814","abstract_canon_sha256":"521fb33b74b661382bfabd4eef3295477af268ce1b27b57bdb3be3318d2d48c0"},"schema_version":"1.0"},"canonical_sha256":"1a62f9ce455c2d48c96f9686f4afedceabc380b0010c0ebf571a5907a35068b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-04T00:35:06.801978Z","signature_b64":"ugHCAuQdV/mb24IGoghAePrh9HOnHv0FE8nZWP31oSAuW6NW4BsNQsNXrC/bqlw4PfbTUUt3Jaz1jaByXOojAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a62f9ce455c2d48c96f9686f4afedceabc380b0010c0ebf571a5907a35068b6","last_reissued_at":"2026-08-04T00:35:06.800563Z","signature_status":"signed_v1","first_computed_at":"2026-08-04T00:35:06.800563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.00331","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":"2026-08-04T00:35:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D5MEViMU0gKEkWcQDVprQc7MvAJ9GquzRGZYORPdbAoJ2WtfgD3nF6AECg5Y6zL6stq6CZ6RK63IPme9nqNsAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T07:39:28.615246Z"},"content_sha256":"9245a87325851a7d621fcd15a260b2c2cd9e24b340f8c44a9daf605b13e66d55","schema_version":"1.0","event_id":"sha256:9245a87325851a7d621fcd15a260b2c2cd9e24b340f8c44a9daf605b13e66d55"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:DJRPTTSFLQWURSLPS2DPJL7NZ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin-1 Ultralight Dark Matter under Cosmological Scrutiny: Mass Constraints from CMB and Distance Probes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Diana L\\'opez Nacir, Guadalupe Ahumada Acu\\~na, Rafael C. Nunes, Tomas Ferreira Chase","submitted_at":"2026-07-31T22:39:32Z","abstract_excerpt":"We present cosmological constraints on spin-1 ultralight dark matter, described by a vector field (VFDM) with mass $m_{\\rm A}$, using Planck CMB data and geometrical probes from BAO and SNIa. A key theoretical result is the derivation of the full CMB temperature covariance matrix, including both diagonal and off-diagonal anisotropic contributions induced by the preferred direction of the background vector field. We first constrain the model using the diagonal part of the covariance, together with CMB lensing; the off-diagonal terms, which couple multipoles with $\\Delta\\ell\\in\\{2,4\\}$, could bi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.00331","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/2608.00331/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":"2026-08-04T00:35:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9+sRxVKNVAFZoZrTPFEzHjxu4mogrEwfY9HstJ+qo7kR90BWyjxDBAaWHS6oFB+53Pqs/uqP8txJoi1uEQkgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T07:39:28.616131Z"},"content_sha256":"0ad29b5d38cbb48bcee054e5dd066ca77ccbfed33140badebfe1305cb02fa10c","schema_version":"1.0","event_id":"sha256:0ad29b5d38cbb48bcee054e5dd066ca77ccbfed33140badebfe1305cb02fa10c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DJRPTTSFLQWURSLPS2DPJL7NZ2/bundle.json","state_url":"https://pith.science/pith/DJRPTTSFLQWURSLPS2DPJL7NZ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DJRPTTSFLQWURSLPS2DPJL7NZ2/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":"2026-08-04T07:39:28Z","links":{"resolver":"https://pith.science/pith/DJRPTTSFLQWURSLPS2DPJL7NZ2","bundle":"https://pith.science/pith/DJRPTTSFLQWURSLPS2DPJL7NZ2/bundle.json","state":"https://pith.science/pith/DJRPTTSFLQWURSLPS2DPJL7NZ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DJRPTTSFLQWURSLPS2DPJL7NZ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:DJRPTTSFLQWURSLPS2DPJL7NZ2","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":"521fb33b74b661382bfabd4eef3295477af268ce1b27b57bdb3be3318d2d48c0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T22:39:32Z","title_canon_sha256":"ee3769eb9a5f219698d3b463e6e73baae0fe640af2dd84563191d08d7339d814"},"schema_version":"1.0","source":{"id":"2608.00331","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.00331","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"arxiv_version","alias_value":"2608.00331v1","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.00331","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"pith_short_12","alias_value":"DJRPTTSFLQWU","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"pith_short_16","alias_value":"DJRPTTSFLQWURSLP","created_at":"2026-08-04T00:35:06Z"},{"alias_kind":"pith_short_8","alias_value":"DJRPTTSF","created_at":"2026-08-04T00:35:06Z"}],"graph_snapshots":[{"event_id":"sha256:0ad29b5d38cbb48bcee054e5dd066ca77ccbfed33140badebfe1305cb02fa10c","target":"graph","created_at":"2026-08-04T00:35:06Z","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/2608.00331/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present cosmological constraints on spin-1 ultralight dark matter, described by a vector field (VFDM) with mass $m_{\\rm A}$, using Planck CMB data and geometrical probes from BAO and SNIa. A key theoretical result is the derivation of the full CMB temperature covariance matrix, including both diagonal and off-diagonal anisotropic contributions induced by the preferred direction of the background vector field. We first constrain the model using the diagonal part of the covariance, together with CMB lensing; the off-diagonal terms, which couple multipoles with $\\Delta\\ell\\in\\{2,4\\}$, could bi","authors_text":"Diana L\\'opez Nacir, Guadalupe Ahumada Acu\\~na, Rafael C. Nunes, Tomas Ferreira Chase","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T22:39:32Z","title":"Spin-1 Ultralight Dark Matter under Cosmological Scrutiny: Mass Constraints from CMB and Distance Probes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.00331","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":"sha256:9245a87325851a7d621fcd15a260b2c2cd9e24b340f8c44a9daf605b13e66d55","target":"record","created_at":"2026-08-04T00:35:06Z","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":"521fb33b74b661382bfabd4eef3295477af268ce1b27b57bdb3be3318d2d48c0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-31T22:39:32Z","title_canon_sha256":"ee3769eb9a5f219698d3b463e6e73baae0fe640af2dd84563191d08d7339d814"},"schema_version":"1.0","source":{"id":"2608.00331","kind":"arxiv","version":1}},"canonical_sha256":"1a62f9ce455c2d48c96f9686f4afedceabc380b0010c0ebf571a5907a35068b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1a62f9ce455c2d48c96f9686f4afedceabc380b0010c0ebf571a5907a35068b6","first_computed_at":"2026-08-04T00:35:06.800563Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-04T00:35:06.800563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ugHCAuQdV/mb24IGoghAePrh9HOnHv0FE8nZWP31oSAuW6NW4BsNQsNXrC/bqlw4PfbTUUt3Jaz1jaByXOojAQ==","signature_status":"signed_v1","signed_at":"2026-08-04T00:35:06.801978Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.00331","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9245a87325851a7d621fcd15a260b2c2cd9e24b340f8c44a9daf605b13e66d55","sha256:0ad29b5d38cbb48bcee054e5dd066ca77ccbfed33140badebfe1305cb02fa10c"],"state_sha256":"de7abcc44fd8ff7f5fa95bc89a572aae3c0a19f4fb3569fc106e96c7355aea93"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l4uJWZVukbyyDJzqniHDKmPKOJlauHYLGidm30HKRGTqSRHj7mzM09sbfXh9u62UTu/3lJKsKMCkOL+HxjP5Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T07:39:28.627609Z","bundle_sha256":"f1d8ca09cda10e5c46eec67a04178cf4f54b18b8d1f8901e17d2ea3a9d77859d"}}