{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:AUEO4BMKO2FBFDKYYYPWRNGOQ2","short_pith_number":"pith:AUEO4BMK","canonical_record":{"source":{"id":"2002.08370","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-02-19T19:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"265d457ed45705b1bcba39abf034ae0572149bbbb18e4442cf463a80843d7966","abstract_canon_sha256":"27a03a5653083f12afec908ae4090717e2da2540becfa629a173a2a30eead2df"},"schema_version":"1.0"},"canonical_sha256":"0508ee058a768a128d58c61f68b4ce86aea8a712f97a4368131cf86872392246","source":{"kind":"arxiv","id":"2002.08370","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.08370","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"2002.08370v2","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.08370","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"AUEO4BMKO2FB","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"pith_short_16","alias_value":"AUEO4BMKO2FBFDKY","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"pith_short_8","alias_value":"AUEO4BMK","created_at":"2026-07-05T01:08:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:AUEO4BMKO2FBFDKYYYPWRNGOQ2","target":"record","payload":{"canonical_record":{"source":{"id":"2002.08370","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-02-19T19:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"265d457ed45705b1bcba39abf034ae0572149bbbb18e4442cf463a80843d7966","abstract_canon_sha256":"27a03a5653083f12afec908ae4090717e2da2540becfa629a173a2a30eead2df"},"schema_version":"1.0"},"canonical_sha256":"0508ee058a768a128d58c61f68b4ce86aea8a712f97a4368131cf86872392246","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:08:27.921227Z","signature_b64":"fGolAQzd6F5haNkhnXdnOWWhnbInOa6mn9QCUGvML6cNbB1tmDPhkyxSmd8rhq89y//UGWAuFLE5UUJuZRkfCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0508ee058a768a128d58c61f68b4ce86aea8a712f97a4368131cf86872392246","last_reissued_at":"2026-07-05T01:08:27.920775Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:08:27.920775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.08370","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lCGL2q+wMbYWy5IkzJJ6ZnPCPjKLCjVA7Z11UD3cvN6pLU8jjdYfjbnOFcUbA7gmEVvxvrrZwNHC2DXxiM1dBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:09:09.526190Z"},"content_sha256":"78db7e6a35146107d98459f7574a049f65f21387b93241e1857cd66adffde8ae","schema_version":"1.0","event_id":"sha256:78db7e6a35146107d98459f7574a049f65f21387b93241e1857cd66adffde8ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:AUEO4BMKO2FBFDKYYYPWRNGOQ2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Robust cosmological constraints on axion-like particles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Kai Schmidt-Hoberg, Marco Hufnagel, Paul Frederik Depta","submitted_at":"2020-02-19T19:00:01Z","abstract_excerpt":"Axion-like particles with masses in the keV-GeV range have a profound impact on the cosmological evolution of our Universe, in particular on the abundance of light elements produced during Big Bang Nucleosynthesis. The resulting limits are complementary to searches in the laboratory and provide valuable additional information regarding the validity of a given point in parameter space. A potential drawback is that altering the cosmological history may potentially weaken or even fully invalidate these bounds. The main objective of this article is therefore to evaluate the robustness of cosmologi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.08370","kind":"arxiv","version":2},"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/2002.08370/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":"2026-07-05T01:08:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MQPvO2PNsNSOMjAF27x23Fmw6pY7ZECT6N/D3kz6PoutVmRxlVrHhu8zxSMhZ8KEDQewWPNBzlYat0krmT7vCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:09:09.526693Z"},"content_sha256":"6e568092b8321cf952366757aa3e78b3c754caaa65f9c0d14902cce75f416494","schema_version":"1.0","event_id":"sha256:6e568092b8321cf952366757aa3e78b3c754caaa65f9c0d14902cce75f416494"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AUEO4BMKO2FBFDKYYYPWRNGOQ2/bundle.json","state_url":"https://pith.science/pith/AUEO4BMKO2FBFDKYYYPWRNGOQ2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AUEO4BMKO2FBFDKYYYPWRNGOQ2/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":"2026-08-10T17:09:09Z","links":{"resolver":"https://pith.science/pith/AUEO4BMKO2FBFDKYYYPWRNGOQ2","bundle":"https://pith.science/pith/AUEO4BMKO2FBFDKYYYPWRNGOQ2/bundle.json","state":"https://pith.science/pith/AUEO4BMKO2FBFDKYYYPWRNGOQ2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AUEO4BMKO2FBFDKYYYPWRNGOQ2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:AUEO4BMKO2FBFDKYYYPWRNGOQ2","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":"27a03a5653083f12afec908ae4090717e2da2540becfa629a173a2a30eead2df","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-02-19T19:00:01Z","title_canon_sha256":"265d457ed45705b1bcba39abf034ae0572149bbbb18e4442cf463a80843d7966"},"schema_version":"1.0","source":{"id":"2002.08370","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.08370","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"arxiv_version","alias_value":"2002.08370v2","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.08370","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"pith_short_12","alias_value":"AUEO4BMKO2FB","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"pith_short_16","alias_value":"AUEO4BMKO2FBFDKY","created_at":"2026-07-05T01:08:27Z"},{"alias_kind":"pith_short_8","alias_value":"AUEO4BMK","created_at":"2026-07-05T01:08:27Z"}],"graph_snapshots":[{"event_id":"sha256:6e568092b8321cf952366757aa3e78b3c754caaa65f9c0d14902cce75f416494","target":"graph","created_at":"2026-07-05T01:08:27Z","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/2002.08370/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Axion-like particles with masses in the keV-GeV range have a profound impact on the cosmological evolution of our Universe, in particular on the abundance of light elements produced during Big Bang Nucleosynthesis. The resulting limits are complementary to searches in the laboratory and provide valuable additional information regarding the validity of a given point in parameter space. A potential drawback is that altering the cosmological history may potentially weaken or even fully invalidate these bounds. The main objective of this article is therefore to evaluate the robustness of cosmologi","authors_text":"Kai Schmidt-Hoberg, Marco Hufnagel, Paul Frederik Depta","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-02-19T19:00:01Z","title":"Robust cosmological constraints on axion-like particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.08370","kind":"arxiv","version":2},"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":"sha256:78db7e6a35146107d98459f7574a049f65f21387b93241e1857cd66adffde8ae","target":"record","created_at":"2026-07-05T01:08:27Z","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":"27a03a5653083f12afec908ae4090717e2da2540becfa629a173a2a30eead2df","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-02-19T19:00:01Z","title_canon_sha256":"265d457ed45705b1bcba39abf034ae0572149bbbb18e4442cf463a80843d7966"},"schema_version":"1.0","source":{"id":"2002.08370","kind":"arxiv","version":2}},"canonical_sha256":"0508ee058a768a128d58c61f68b4ce86aea8a712f97a4368131cf86872392246","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0508ee058a768a128d58c61f68b4ce86aea8a712f97a4368131cf86872392246","first_computed_at":"2026-07-05T01:08:27.920775Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:08:27.920775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fGolAQzd6F5haNkhnXdnOWWhnbInOa6mn9QCUGvML6cNbB1tmDPhkyxSmd8rhq89y//UGWAuFLE5UUJuZRkfCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:08:27.921227Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.08370","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78db7e6a35146107d98459f7574a049f65f21387b93241e1857cd66adffde8ae","sha256:6e568092b8321cf952366757aa3e78b3c754caaa65f9c0d14902cce75f416494"],"state_sha256":"635a2003de0addf2e2f177fb76b594d8414a8581e3616d75227f1624cc2205fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sQLBFa0f+4U9U4g75YMYqTnEsjAPXdZI68jexNciO+h5oK9wlEp1OSLlWIhORoK2Y88R9C22NZOM4XuuagWHAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T17:09:09.530206Z","bundle_sha256":"d5cb97303f429fd9159698a6bc31926ee7f61cfa4c7ae3af34665cf0a9adf09d"}}