{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:3ZFPD55CVGNJJZVGBYF63745P7","short_pith_number":"pith:3ZFPD55C","canonical_record":{"source":{"id":"2107.03420","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-07T18:09:20Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4de501412f11e86ad45a8a3327b5681d8a54449fbbf8033b2ce2b97486b16f79","abstract_canon_sha256":"f63c6249ac6f8d2c3eb1341436bb45a703191e274b835b949cebefaba9649d1e"},"schema_version":"1.0"},"canonical_sha256":"de4af1f7a2a99a94e6a60e0bedff9d7fd3670d5b76b0a7af4903f0e811788b63","source":{"kind":"arxiv","id":"2107.03420","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.03420","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"arxiv_version","alias_value":"2107.03420v2","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.03420","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_12","alias_value":"3ZFPD55CVGNJ","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_16","alias_value":"3ZFPD55CVGNJJZVG","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_8","alias_value":"3ZFPD55C","created_at":"2026-07-05T03:11:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:3ZFPD55CVGNJJZVGBYF63745P7","target":"record","payload":{"canonical_record":{"source":{"id":"2107.03420","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-07T18:09:20Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4de501412f11e86ad45a8a3327b5681d8a54449fbbf8033b2ce2b97486b16f79","abstract_canon_sha256":"f63c6249ac6f8d2c3eb1341436bb45a703191e274b835b949cebefaba9649d1e"},"schema_version":"1.0"},"canonical_sha256":"de4af1f7a2a99a94e6a60e0bedff9d7fd3670d5b76b0a7af4903f0e811788b63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:11:06.235866Z","signature_b64":"pzsFL0AinO2TEO81Xc98RtAEemEAP02as/LwXQkGeuXJA9kqURgjZI35h6UHnZt7jMPhsUOHv81g13HhS/4ECQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"de4af1f7a2a99a94e6a60e0bedff9d7fd3670d5b76b0a7af4903f0e811788b63","last_reissued_at":"2026-07-05T03:11:06.235359Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:11:06.235359Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.03420","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":"2026-07-05T03:11:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m0NWptePg/R6ei0mRaivubgAafr5dT3QG2MgbuP+6j0ZDyk71srXRyzBcXNWEyuNh0QncAraV/pxg0RvRYmyBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T16:00:08.407491Z"},"content_sha256":"46724d2a7a1ac279f3ad7936f083b2a62a437d06a1fa984f74e8b66c9a28ae9c","schema_version":"1.0","event_id":"sha256:46724d2a7a1ac279f3ad7936f083b2a62a437d06a1fa984f74e8b66c9a28ae9c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:3ZFPD55CVGNJJZVGBYF63745P7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Axion-like particles from primordial black holes shining through the Universe","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"hep-ph","authors_text":"Alessandro Mirizzi (Bari Univ. & INFN Bari), Daniele Montanino (Lecce Univ. & INFN Lecce), Francesco Capozzi (Virginia Tech.), Francesco Schiavone (Bari Univ.)","submitted_at":"2021-07-07T18:09:20Z","abstract_excerpt":"We consider a cosmological scenario in which the very early Universe experienced a transient epoch of matter domination due to the formation of a large population of primordial black holes (PBHs) with masses $M \\lesssim 10^{9}\\,\\textrm{g}$, that evaporate before Big Bang nucleosynthesis. In this context, Hawking radiation would be a non-thermal mechanism to produce a cosmic background of axion-like particles (ALPs). We assume the minimal scenario in which these ALPs couple only with photons. In the case of ultralight ALPs ($m_a \\lesssim 10^{-9}\\,\\textrm{eV}$) the cosmic magnetic fields might t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.03420","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/2107.03420/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":"2026-07-05T03:11:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ii8Bx/gYW0m/f+pJLyDsmRPCZ4Q1c5mLbrxJuFOfUy+3ZVvpDJh9iiYmUOXy1ADhtWXpJq8hKDqd4kx9JN9kBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T16:00:08.408008Z"},"content_sha256":"a0fb535d9683e50527ab32a73cc1de5757e70aa58a38f70aabd4fac22175002e","schema_version":"1.0","event_id":"sha256:a0fb535d9683e50527ab32a73cc1de5757e70aa58a38f70aabd4fac22175002e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3ZFPD55CVGNJJZVGBYF63745P7/bundle.json","state_url":"https://pith.science/pith/3ZFPD55CVGNJJZVGBYF63745P7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3ZFPD55CVGNJJZVGBYF63745P7/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":"2026-08-14T16:00:08Z","links":{"resolver":"https://pith.science/pith/3ZFPD55CVGNJJZVGBYF63745P7","bundle":"https://pith.science/pith/3ZFPD55CVGNJJZVGBYF63745P7/bundle.json","state":"https://pith.science/pith/3ZFPD55CVGNJJZVGBYF63745P7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3ZFPD55CVGNJJZVGBYF63745P7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:3ZFPD55CVGNJJZVGBYF63745P7","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":"f63c6249ac6f8d2c3eb1341436bb45a703191e274b835b949cebefaba9649d1e","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-07T18:09:20Z","title_canon_sha256":"4de501412f11e86ad45a8a3327b5681d8a54449fbbf8033b2ce2b97486b16f79"},"schema_version":"1.0","source":{"id":"2107.03420","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.03420","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"arxiv_version","alias_value":"2107.03420v2","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.03420","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_12","alias_value":"3ZFPD55CVGNJ","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_16","alias_value":"3ZFPD55CVGNJJZVG","created_at":"2026-07-05T03:11:06Z"},{"alias_kind":"pith_short_8","alias_value":"3ZFPD55C","created_at":"2026-07-05T03:11:06Z"}],"graph_snapshots":[{"event_id":"sha256:a0fb535d9683e50527ab32a73cc1de5757e70aa58a38f70aabd4fac22175002e","target":"graph","created_at":"2026-07-05T03:11:06Z","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/2107.03420/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider a cosmological scenario in which the very early Universe experienced a transient epoch of matter domination due to the formation of a large population of primordial black holes (PBHs) with masses $M \\lesssim 10^{9}\\,\\textrm{g}$, that evaporate before Big Bang nucleosynthesis. In this context, Hawking radiation would be a non-thermal mechanism to produce a cosmic background of axion-like particles (ALPs). We assume the minimal scenario in which these ALPs couple only with photons. In the case of ultralight ALPs ($m_a \\lesssim 10^{-9}\\,\\textrm{eV}$) the cosmic magnetic fields might t","authors_text":"Alessandro Mirizzi (Bari Univ. & INFN Bari), Daniele Montanino (Lecce Univ. & INFN Lecce), Francesco Capozzi (Virginia Tech.), Francesco Schiavone (Bari Univ.)","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-07T18:09:20Z","title":"Axion-like particles from primordial black holes shining through the Universe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.03420","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":"sha256:46724d2a7a1ac279f3ad7936f083b2a62a437d06a1fa984f74e8b66c9a28ae9c","target":"record","created_at":"2026-07-05T03:11:06Z","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":"f63c6249ac6f8d2c3eb1341436bb45a703191e274b835b949cebefaba9649d1e","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-07-07T18:09:20Z","title_canon_sha256":"4de501412f11e86ad45a8a3327b5681d8a54449fbbf8033b2ce2b97486b16f79"},"schema_version":"1.0","source":{"id":"2107.03420","kind":"arxiv","version":2}},"canonical_sha256":"de4af1f7a2a99a94e6a60e0bedff9d7fd3670d5b76b0a7af4903f0e811788b63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de4af1f7a2a99a94e6a60e0bedff9d7fd3670d5b76b0a7af4903f0e811788b63","first_computed_at":"2026-07-05T03:11:06.235359Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:11:06.235359Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pzsFL0AinO2TEO81Xc98RtAEemEAP02as/LwXQkGeuXJA9kqURgjZI35h6UHnZt7jMPhsUOHv81g13HhS/4ECQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:11:06.235866Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.03420","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46724d2a7a1ac279f3ad7936f083b2a62a437d06a1fa984f74e8b66c9a28ae9c","sha256:a0fb535d9683e50527ab32a73cc1de5757e70aa58a38f70aabd4fac22175002e"],"state_sha256":"5ea57ffcfb09b64d54ef7f3a74b1f69b798ab1810529f592fcd3f99d1981cdda"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OC4LRvRuuf8WSLzqW6cSOAIaM3tjg0r9ANhUCXZHFkBpCCLqHKTcuBdPTKjrTM7Rcv9ykrKmq2iY4zCEtgTVBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T16:00:08.413405Z","bundle_sha256":"d122695d70ffa99ba616f15afeeb958dc5691ccc5fa9f913cfc8f6f2030fd664"}}