{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:SOCX7OJ6RPBBGRCODVPAKLJVCF","short_pith_number":"pith:SOCX7OJ6","canonical_record":{"source":{"id":"0812.4339","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-23T10:05:57Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"dc45a8941d8c5fdd5170f2085696c1509f03912e74eb1a3234252026607595ba","abstract_canon_sha256":"183fe1cb39f0143374ac7e2a9d71e32aae1c1c0323c529d0535183d46afb14a3"},"schema_version":"1.0"},"canonical_sha256":"93857fb93e8bc213444e1d5e052d3511666a154900b987cb5cec003d43b0b822","source":{"kind":"arxiv","id":"0812.4339","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.4339","created_at":"2026-05-18T04:18:53Z"},{"alias_kind":"arxiv_version","alias_value":"0812.4339v2","created_at":"2026-05-18T04:18:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.4339","created_at":"2026-05-18T04:18:53Z"},{"alias_kind":"pith_short_12","alias_value":"SOCX7OJ6RPBB","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"SOCX7OJ6RPBBGRCO","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"SOCX7OJ6","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:SOCX7OJ6RPBBGRCODVPAKLJVCF","target":"record","payload":{"canonical_record":{"source":{"id":"0812.4339","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-23T10:05:57Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"dc45a8941d8c5fdd5170f2085696c1509f03912e74eb1a3234252026607595ba","abstract_canon_sha256":"183fe1cb39f0143374ac7e2a9d71e32aae1c1c0323c529d0535183d46afb14a3"},"schema_version":"1.0"},"canonical_sha256":"93857fb93e8bc213444e1d5e052d3511666a154900b987cb5cec003d43b0b822","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:18:53.476054Z","signature_b64":"agH6XxvhB2Ny/zqTqFacPyszG4ggULKhwZnRYm+hY9xqVYQoseoXf71l2EDKIAcnTnZV4RXrmLdYSq52BuELBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93857fb93e8bc213444e1d5e052d3511666a154900b987cb5cec003d43b0b822","last_reissued_at":"2026-05-18T04:18:53.475543Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:18:53.475543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0812.4339","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":"2026-05-18T04:18:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DKx3iUHrLb6pj+92mHnshV10te1K7oXiZMvAn/sUB+CQHR7ZNZ30cUDWmeE1KQZf0TwkoXOhpt5dc1NS5k8IDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:26:06.475839Z"},"content_sha256":"ee493b39848c9ab7f4127bdc14834cec865bfec0d3cb46abbb53f7bc166a4e2a","schema_version":"1.0","event_id":"sha256:ee493b39848c9ab7f4127bdc14834cec865bfec0d3cb46abbb53f7bc166a4e2a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:SOCX7OJ6RPBBGRCODVPAKLJVCF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gravitational wave background as a probe of the primordial black hole abundance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph","authors_text":"Jun'ichi Yokoyama, Ryo Saito","submitted_at":"2008-12-23T10:05:57Z","abstract_excerpt":"Formation of significant number of primordial black holes (PBHs) is realized if and only if primordial density fluctuations have a large amplitude, which means that tensor perturbations generated from these scalar perturbations as a second order effect are also large and comparable to the observational data. We show that pulsar timing observation could find/rule out PBHs with \\sim 10^2 M_solar which are considered as a candidate of intermediate-mass black holes and that PBHs with mass range 10^{20-26} g, which serves as a candidate of dark matter, may be probed by future space-based laser inte"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.4339","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":""},"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":"2026-05-18T04:18:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qm9ssv3oAc9cMWBfVyD92k8Q0WWU8fd2aPDABou/Tp185aSaLaOFldY2Jv/p1/aVV1tD0i8iw+YCuAAC42d6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:26:06.476549Z"},"content_sha256":"f30464b3f59d4934f1570dbecf574ceebf7bd587ae4faa872ced9eff3691c519","schema_version":"1.0","event_id":"sha256:f30464b3f59d4934f1570dbecf574ceebf7bd587ae4faa872ced9eff3691c519"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SOCX7OJ6RPBBGRCODVPAKLJVCF/bundle.json","state_url":"https://pith.science/pith/SOCX7OJ6RPBBGRCODVPAKLJVCF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SOCX7OJ6RPBBGRCODVPAKLJVCF/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":"2026-05-25T09:26:06Z","links":{"resolver":"https://pith.science/pith/SOCX7OJ6RPBBGRCODVPAKLJVCF","bundle":"https://pith.science/pith/SOCX7OJ6RPBBGRCODVPAKLJVCF/bundle.json","state":"https://pith.science/pith/SOCX7OJ6RPBBGRCODVPAKLJVCF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SOCX7OJ6RPBBGRCODVPAKLJVCF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:SOCX7OJ6RPBBGRCODVPAKLJVCF","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":"183fe1cb39f0143374ac7e2a9d71e32aae1c1c0323c529d0535183d46afb14a3","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-23T10:05:57Z","title_canon_sha256":"dc45a8941d8c5fdd5170f2085696c1509f03912e74eb1a3234252026607595ba"},"schema_version":"1.0","source":{"id":"0812.4339","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.4339","created_at":"2026-05-18T04:18:53Z"},{"alias_kind":"arxiv_version","alias_value":"0812.4339v2","created_at":"2026-05-18T04:18:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.4339","created_at":"2026-05-18T04:18:53Z"},{"alias_kind":"pith_short_12","alias_value":"SOCX7OJ6RPBB","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"SOCX7OJ6RPBBGRCO","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"SOCX7OJ6","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:f30464b3f59d4934f1570dbecf574ceebf7bd587ae4faa872ced9eff3691c519","target":"graph","created_at":"2026-05-18T04:18:53Z","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":"Formation of significant number of primordial black holes (PBHs) is realized if and only if primordial density fluctuations have a large amplitude, which means that tensor perturbations generated from these scalar perturbations as a second order effect are also large and comparable to the observational data. We show that pulsar timing observation could find/rule out PBHs with \\sim 10^2 M_solar which are considered as a candidate of intermediate-mass black holes and that PBHs with mass range 10^{20-26} g, which serves as a candidate of dark matter, may be probed by future space-based laser inte","authors_text":"Jun'ichi Yokoyama, Ryo Saito","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-23T10:05:57Z","title":"Gravitational wave background as a probe of the primordial black hole abundance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.4339","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:ee493b39848c9ab7f4127bdc14834cec865bfec0d3cb46abbb53f7bc166a4e2a","target":"record","created_at":"2026-05-18T04:18:53Z","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":"183fe1cb39f0143374ac7e2a9d71e32aae1c1c0323c529d0535183d46afb14a3","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-23T10:05:57Z","title_canon_sha256":"dc45a8941d8c5fdd5170f2085696c1509f03912e74eb1a3234252026607595ba"},"schema_version":"1.0","source":{"id":"0812.4339","kind":"arxiv","version":2}},"canonical_sha256":"93857fb93e8bc213444e1d5e052d3511666a154900b987cb5cec003d43b0b822","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93857fb93e8bc213444e1d5e052d3511666a154900b987cb5cec003d43b0b822","first_computed_at":"2026-05-18T04:18:53.475543Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:18:53.475543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"agH6XxvhB2Ny/zqTqFacPyszG4ggULKhwZnRYm+hY9xqVYQoseoXf71l2EDKIAcnTnZV4RXrmLdYSq52BuELBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:18:53.476054Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.4339","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee493b39848c9ab7f4127bdc14834cec865bfec0d3cb46abbb53f7bc166a4e2a","sha256:f30464b3f59d4934f1570dbecf574ceebf7bd587ae4faa872ced9eff3691c519"],"state_sha256":"e8bd3416baef5d90030c80818c4c533ed5c70a00429e3f39a52b029301ea4c88"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x7KUJW1B2UbQoFjwpPXL4GKtw5CNkpINc1nJOWOqYo/2xmiQQBCx5h18rCEIuOPohbJdCiqJQ7Llx2riJ8DwCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T09:26:06.479617Z","bundle_sha256":"694d5829f3e229fbe335fd44ba954ab9231b77bef51f5afe294064751b04ef96"}}