{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:USPSTFGMSX4RFHPZ4ROCINAOH4","short_pith_number":"pith:USPSTFGM","canonical_record":{"source":{"id":"1711.06312","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-16T20:35:25Z","cross_cats_sorted":[],"title_canon_sha256":"6df71617bcbd2ad6debb4cee4e7364ff28cf44a62815fb6133d52b29b92ced8b","abstract_canon_sha256":"135211ff51a372c8ac59de50251c7ba3612245d54e443460ef6029d2a251b3b5"},"schema_version":"1.0"},"canonical_sha256":"a49f2994cc95f9129df9e45c24340e3f26d8d6d5947e4f9f1140c2b308d820b1","source":{"kind":"arxiv","id":"1711.06312","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.06312","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"arxiv_version","alias_value":"1711.06312v2","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.06312","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"pith_short_12","alias_value":"USPSTFGMSX4R","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"USPSTFGMSX4RFHPZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"USPSTFGM","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:USPSTFGMSX4RFHPZ4ROCINAOH4","target":"record","payload":{"canonical_record":{"source":{"id":"1711.06312","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-16T20:35:25Z","cross_cats_sorted":[],"title_canon_sha256":"6df71617bcbd2ad6debb4cee4e7364ff28cf44a62815fb6133d52b29b92ced8b","abstract_canon_sha256":"135211ff51a372c8ac59de50251c7ba3612245d54e443460ef6029d2a251b3b5"},"schema_version":"1.0"},"canonical_sha256":"a49f2994cc95f9129df9e45c24340e3f26d8d6d5947e4f9f1140c2b308d820b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:19.981724Z","signature_b64":"SgJVyhBQJyVRzrYZXK8/BOcXTHUFDdmjusVHZKErjawnp3zFAiC3vWctBiG0+YWGoTJ23y/j5LG0iFs5Y/u1BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a49f2994cc95f9129df9e45c24340e3f26d8d6d5947e4f9f1140c2b308d820b1","last_reissued_at":"2026-05-18T00:15:19.981283Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:19.981283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.06312","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":"2026-05-18T00:15:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hmiv8UOuVXHiYBoZCmC+eNpULPtXeJ7+j5nkwOg+UVovXkj1Eh96dwvdZ/t9du2ou2KBEYODiYXwbSfDQfqeAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T09:34:36.876866Z"},"content_sha256":"f6d0fce8120b531fe73a2ada230d2322492b3d4f00c3a5a49fe0d11092775be7","schema_version":"1.0","event_id":"sha256:f6d0fce8120b531fe73a2ada230d2322492b3d4f00c3a5a49fe0d11092775be7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:USPSTFGMSX4RFHPZ4ROCINAOH4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Primordial black hole detection through diffractive microlensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Mehrabi, S. Rahvar, T. Naderi","submitted_at":"2017-11-16T20:35:25Z","abstract_excerpt":"Recent observations of gravitational waves motivate investigations for the existence of Primordial Black Holes (PBHs). We propose the observation of gravitational microlensing of distant quasars for the range of infrared to the submillimeter wavelengths by sub-lunar PBHs as lenses. The advantage of observations in the longer wavelengths, comparable to the Schwarzschild radius of the lens (i.e. $R_{\\rm sch}\\simeq \\lambda$) is the detection of the wave optics features of the gravitational microlensing. The observation of diffraction pattern in the microlensing light curve of a quasar can break t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.06312","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":"2026-05-18T00:15:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L9PiCLk5tpyQ8X7L70FuB0M/GX7aMb34LjJl9/O8qSNE5EmENilYix5WCGuoMMMkJwExjUGjuZaCRr0Z/VJbDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T09:34:36.877217Z"},"content_sha256":"55d082280b29a94759800fa50b78e5e87b42879fd6ae4f11ea215ff68f105c74","schema_version":"1.0","event_id":"sha256:55d082280b29a94759800fa50b78e5e87b42879fd6ae4f11ea215ff68f105c74"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/USPSTFGMSX4RFHPZ4ROCINAOH4/bundle.json","state_url":"https://pith.science/pith/USPSTFGMSX4RFHPZ4ROCINAOH4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/USPSTFGMSX4RFHPZ4ROCINAOH4/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":"2026-06-05T09:34:36Z","links":{"resolver":"https://pith.science/pith/USPSTFGMSX4RFHPZ4ROCINAOH4","bundle":"https://pith.science/pith/USPSTFGMSX4RFHPZ4ROCINAOH4/bundle.json","state":"https://pith.science/pith/USPSTFGMSX4RFHPZ4ROCINAOH4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/USPSTFGMSX4RFHPZ4ROCINAOH4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:USPSTFGMSX4RFHPZ4ROCINAOH4","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":"135211ff51a372c8ac59de50251c7ba3612245d54e443460ef6029d2a251b3b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-16T20:35:25Z","title_canon_sha256":"6df71617bcbd2ad6debb4cee4e7364ff28cf44a62815fb6133d52b29b92ced8b"},"schema_version":"1.0","source":{"id":"1711.06312","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.06312","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"arxiv_version","alias_value":"1711.06312v2","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.06312","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"pith_short_12","alias_value":"USPSTFGMSX4R","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"USPSTFGMSX4RFHPZ","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"USPSTFGM","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:55d082280b29a94759800fa50b78e5e87b42879fd6ae4f11ea215ff68f105c74","target":"graph","created_at":"2026-05-18T00:15:19Z","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":"Recent observations of gravitational waves motivate investigations for the existence of Primordial Black Holes (PBHs). We propose the observation of gravitational microlensing of distant quasars for the range of infrared to the submillimeter wavelengths by sub-lunar PBHs as lenses. The advantage of observations in the longer wavelengths, comparable to the Schwarzschild radius of the lens (i.e. $R_{\\rm sch}\\simeq \\lambda$) is the detection of the wave optics features of the gravitational microlensing. The observation of diffraction pattern in the microlensing light curve of a quasar can break t","authors_text":"A. Mehrabi, S. Rahvar, T. Naderi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-16T20:35:25Z","title":"Primordial black hole detection through diffractive microlensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.06312","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:f6d0fce8120b531fe73a2ada230d2322492b3d4f00c3a5a49fe0d11092775be7","target":"record","created_at":"2026-05-18T00:15:19Z","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":"135211ff51a372c8ac59de50251c7ba3612245d54e443460ef6029d2a251b3b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-11-16T20:35:25Z","title_canon_sha256":"6df71617bcbd2ad6debb4cee4e7364ff28cf44a62815fb6133d52b29b92ced8b"},"schema_version":"1.0","source":{"id":"1711.06312","kind":"arxiv","version":2}},"canonical_sha256":"a49f2994cc95f9129df9e45c24340e3f26d8d6d5947e4f9f1140c2b308d820b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a49f2994cc95f9129df9e45c24340e3f26d8d6d5947e4f9f1140c2b308d820b1","first_computed_at":"2026-05-18T00:15:19.981283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:19.981283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SgJVyhBQJyVRzrYZXK8/BOcXTHUFDdmjusVHZKErjawnp3zFAiC3vWctBiG0+YWGoTJ23y/j5LG0iFs5Y/u1BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:19.981724Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.06312","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6d0fce8120b531fe73a2ada230d2322492b3d4f00c3a5a49fe0d11092775be7","sha256:55d082280b29a94759800fa50b78e5e87b42879fd6ae4f11ea215ff68f105c74"],"state_sha256":"1c298e83037d11066e0bb49f4d5936b06408319acbc472468f957ea0da800af8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/JID5AH3Dvujt7Ncy7kD9OLgDAnj3cGRNmrs7YflotPBhha5UAhtqgiXLig/wZBb5c/dkYWBiFPzl93TC8TkDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T09:34:36.879234Z","bundle_sha256":"fc866f1231cb9e62ff3d3d7c1cbbdfaa1db766c0412d265e6f1921f343e4b083"}}