{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SJRJOT75IMSPLH2F5LYBD5CCWD","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":"89d9be9863dab8b82160c5ef4d7e0293920d63b35ee4edb6e1036dceffe5aed9","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-01-16T13:03:11Z","title_canon_sha256":"051ac02da85e2be3d42a124747bf2a3f6737ce3f7a032a0225909fbdb78a905a"},"schema_version":"1.0","source":{"id":"1801.05235","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.05235","created_at":"2026-05-18T00:21:06Z"},{"alias_kind":"arxiv_version","alias_value":"1801.05235v1","created_at":"2026-05-18T00:21:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.05235","created_at":"2026-05-18T00:21:06Z"},{"alias_kind":"pith_short_12","alias_value":"SJRJOT75IMSP","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SJRJOT75IMSPLH2F","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SJRJOT75","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:43394c1f29e896b064dc1d4575102db76029f498197eebb991164e88e8fd185b","target":"graph","created_at":"2026-05-18T00:21:06Z","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"},"paper":{"abstract_excerpt":"This is a review article on the primordial black holes (PBHs), with particular focus on the massive ones ($\\gtrsim 10^{15}{\\rm g}$) which have not evaporated by the present epoch by the Hawking radiation. By the detections of gravitational waves by LIGO, we have gained a completely novel tool to observationally search for PBHs complementary to the electromagnetic waves. Based on the perspective that gravitational-wave astronomy will make a significant progress in the next decades, a purpose of this article is to give a comprehensive review covering a wide range of topics on PBHs. After discuss","authors_text":"Misao Sasaki, Shuichiro Yokoyama, Takahiro Tanaka, Teruaki Suyama","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-01-16T13:03:11Z","title":"Primordial Black Holes - Perspectives in Gravitational Wave Astronomy -"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.05235","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:d945d2f25d739193d3340946cd6ab3de878a715fbc86903760b119019ef50ae3","target":"record","created_at":"2026-05-18T00:21:06Z","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":"89d9be9863dab8b82160c5ef4d7e0293920d63b35ee4edb6e1036dceffe5aed9","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-01-16T13:03:11Z","title_canon_sha256":"051ac02da85e2be3d42a124747bf2a3f6737ce3f7a032a0225909fbdb78a905a"},"schema_version":"1.0","source":{"id":"1801.05235","kind":"arxiv","version":1}},"canonical_sha256":"9262974ffd4324f59f45eaf011f442b0e9b521c753ec172e9eb8b0eb64028e91","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9262974ffd4324f59f45eaf011f442b0e9b521c753ec172e9eb8b0eb64028e91","first_computed_at":"2026-05-18T00:21:06.617755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:06.617755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Qe9xCWY6eCu/LHFaqhoiuXpFIK4BYRcmO4jfcl2NM8UsNP1JZi4p9YVC8tusCORV0cIiUWRS0VQZkHvQZs7+Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:06.618140Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.05235","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d945d2f25d739193d3340946cd6ab3de878a715fbc86903760b119019ef50ae3","sha256:43394c1f29e896b064dc1d4575102db76029f498197eebb991164e88e8fd185b"],"state_sha256":"81985efac6be28a4d2d5960a5820061ec3f72abdfd01804508a249704a689f83"}