{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:7VS34C5E74YAJSQOTPHA4J75EY","short_pith_number":"pith:7VS34C5E","canonical_record":{"source":{"id":"2001.08220","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-22T19:00:01Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"a10e0cd8121d83ba4a098c91bdc90a0a31776ecf2e888efb0730aaf9735b4338","abstract_canon_sha256":"9f6d6d158702e69417ad0b1c123f468c8dc66dc6d64d8e273cb64d6862f6888f"},"schema_version":"1.0"},"canonical_sha256":"fd65be0ba4ff3004ca0e9bce0e27fd26290bd4550252bc37ee841f2338448e29","source":{"kind":"arxiv","id":"2001.08220","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.08220","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"arxiv_version","alias_value":"2001.08220v2","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.08220","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"pith_short_12","alias_value":"7VS34C5E74YA","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"pith_short_16","alias_value":"7VS34C5E74YAJSQO","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"pith_short_8","alias_value":"7VS34C5E","created_at":"2026-07-05T01:20:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:7VS34C5E74YAJSQOTPHA4J75EY","target":"record","payload":{"canonical_record":{"source":{"id":"2001.08220","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-22T19:00:01Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"a10e0cd8121d83ba4a098c91bdc90a0a31776ecf2e888efb0730aaf9735b4338","abstract_canon_sha256":"9f6d6d158702e69417ad0b1c123f468c8dc66dc6d64d8e273cb64d6862f6888f"},"schema_version":"1.0"},"canonical_sha256":"fd65be0ba4ff3004ca0e9bce0e27fd26290bd4550252bc37ee841f2338448e29","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:20:52.309682Z","signature_b64":"LvHNcA0We6DkKYqx28JyNd5uZX6UYORChRytnSNspKkRKufHRXOW/lVRH4DzBWJnrY9mm3qlICHxP9wKkdqFDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd65be0ba4ff3004ca0e9bce0e27fd26290bd4550252bc37ee841f2338448e29","last_reissued_at":"2026-07-05T01:20:52.309194Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:20:52.309194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.08220","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":"2026-07-05T01:20:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Ao97G/d1tXaEP72VD9qk8+kcCRfy72qyn1DNn1g6/sCXnPlH5wrm1IyCakB3fRNara/yu5D2mEkwM8lWnbwAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T15:01:33.466112Z"},"content_sha256":"19bcb4c2c4bc7900466cb18113887798f4d7d5ed6e578f3600e69ec1be50a6ed","schema_version":"1.0","event_id":"sha256:19bcb4c2c4bc7900466cb18113887798f4d7d5ed6e578f3600e69ec1be50a6ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:7VS34C5E74YAJSQOTPHA4J75EY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Primordial black holes as dark matter and gravitational waves from single-field polynomial inflation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Alfredo Urbano, Guillermo Ballesteros, Juli\\'an Rey, Marco Taoso","submitted_at":"2020-01-22T19:00:01Z","abstract_excerpt":"We consider the possibility that the majority of dark matter in our Universe consists of black holes of primordial origin. We determine the conditions under which such black holes may have originated from a single-field model of inflation characterized by a quartic polynomial potential. We also explore the effect of higher-dimensional operators. The large power spectrum of curvature perturbations that is needed for a large black hole abundance sources sizable second order tensor perturbations. The resulting stochastic background of primordial gravitational waves could be detected by the future"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.08220","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/2001.08220/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":"2026-07-05T01:20:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BN4X2cBdmGxKY8cJC0ITwmUCXe3kzs4xe47ZpuPsd2xzj1/b/SMiL+pHWmG97TJN/w+wTnhMrDN3eySz2Rx/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T15:01:33.466664Z"},"content_sha256":"18e2017e3be072428d0884f81615117ac9f2b46a042cc9652e4bac1135fe6f77","schema_version":"1.0","event_id":"sha256:18e2017e3be072428d0884f81615117ac9f2b46a042cc9652e4bac1135fe6f77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7VS34C5E74YAJSQOTPHA4J75EY/bundle.json","state_url":"https://pith.science/pith/7VS34C5E74YAJSQOTPHA4J75EY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7VS34C5E74YAJSQOTPHA4J75EY/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":"2026-08-08T15:01:33Z","links":{"resolver":"https://pith.science/pith/7VS34C5E74YAJSQOTPHA4J75EY","bundle":"https://pith.science/pith/7VS34C5E74YAJSQOTPHA4J75EY/bundle.json","state":"https://pith.science/pith/7VS34C5E74YAJSQOTPHA4J75EY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7VS34C5E74YAJSQOTPHA4J75EY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:7VS34C5E74YAJSQOTPHA4J75EY","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":"9f6d6d158702e69417ad0b1c123f468c8dc66dc6d64d8e273cb64d6862f6888f","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-22T19:00:01Z","title_canon_sha256":"a10e0cd8121d83ba4a098c91bdc90a0a31776ecf2e888efb0730aaf9735b4338"},"schema_version":"1.0","source":{"id":"2001.08220","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.08220","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"arxiv_version","alias_value":"2001.08220v2","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.08220","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"pith_short_12","alias_value":"7VS34C5E74YA","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"pith_short_16","alias_value":"7VS34C5E74YAJSQO","created_at":"2026-07-05T01:20:52Z"},{"alias_kind":"pith_short_8","alias_value":"7VS34C5E","created_at":"2026-07-05T01:20:52Z"}],"graph_snapshots":[{"event_id":"sha256:18e2017e3be072428d0884f81615117ac9f2b46a042cc9652e4bac1135fe6f77","target":"graph","created_at":"2026-07-05T01:20:52Z","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/2001.08220/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider the possibility that the majority of dark matter in our Universe consists of black holes of primordial origin. We determine the conditions under which such black holes may have originated from a single-field model of inflation characterized by a quartic polynomial potential. We also explore the effect of higher-dimensional operators. The large power spectrum of curvature perturbations that is needed for a large black hole abundance sources sizable second order tensor perturbations. The resulting stochastic background of primordial gravitational waves could be detected by the future","authors_text":"Alfredo Urbano, Guillermo Ballesteros, Juli\\'an Rey, Marco Taoso","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-22T19:00:01Z","title":"Primordial black holes as dark matter and gravitational waves from single-field polynomial inflation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.08220","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":"sha256:19bcb4c2c4bc7900466cb18113887798f4d7d5ed6e578f3600e69ec1be50a6ed","target":"record","created_at":"2026-07-05T01:20:52Z","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":"9f6d6d158702e69417ad0b1c123f468c8dc66dc6d64d8e273cb64d6862f6888f","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-22T19:00:01Z","title_canon_sha256":"a10e0cd8121d83ba4a098c91bdc90a0a31776ecf2e888efb0730aaf9735b4338"},"schema_version":"1.0","source":{"id":"2001.08220","kind":"arxiv","version":2}},"canonical_sha256":"fd65be0ba4ff3004ca0e9bce0e27fd26290bd4550252bc37ee841f2338448e29","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd65be0ba4ff3004ca0e9bce0e27fd26290bd4550252bc37ee841f2338448e29","first_computed_at":"2026-07-05T01:20:52.309194Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:20:52.309194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LvHNcA0We6DkKYqx28JyNd5uZX6UYORChRytnSNspKkRKufHRXOW/lVRH4DzBWJnrY9mm3qlICHxP9wKkdqFDw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:20:52.309682Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.08220","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19bcb4c2c4bc7900466cb18113887798f4d7d5ed6e578f3600e69ec1be50a6ed","sha256:18e2017e3be072428d0884f81615117ac9f2b46a042cc9652e4bac1135fe6f77"],"state_sha256":"66aa6761320961f65e75a3eae88db682862e3b2d30a38ae3624d2536af65b0b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zdRmr7FVU+1utXeLSuoicxLU8/Fo2ccUDsfs+FiBXbZfYMK7hVwwFY3PjAMnLatPjkZO4iGcrSpOELi/97wRAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T15:01:33.471040Z","bundle_sha256":"dd68d47750d0a66a1eb7fbe58a83f1967250c7eff0ab7d15f0419c71ff883e9f"}}