{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:NDRUHG3QI5QHUCW34MLT5OAIUF","short_pith_number":"pith:NDRUHG3Q","canonical_record":{"source":{"id":"2012.03498","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-12-07T07:44:41Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"4b2bcdab52a1914faba11881884cafbfa3e191d7d2336197d19e23209434c63e","abstract_canon_sha256":"fe918481cc5ebe01cbed5758fa033e013eddede6ad2b17ac8327dd3d2890c1a1"},"schema_version":"1.0"},"canonical_sha256":"68e3439b7047607a0adbe3173eb808a14632c64cb16e4bf4178aa4ec2a3e48f7","source":{"kind":"arxiv","id":"2012.03498","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.03498","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"arxiv_version","alias_value":"2012.03498v2","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.03498","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"pith_short_12","alias_value":"NDRUHG3QI5QH","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"NDRUHG3QI5QHUCW3","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"NDRUHG3Q","created_at":"2026-07-05T02:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:NDRUHG3QI5QHUCW34MLT5OAIUF","target":"record","payload":{"canonical_record":{"source":{"id":"2012.03498","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-12-07T07:44:41Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"4b2bcdab52a1914faba11881884cafbfa3e191d7d2336197d19e23209434c63e","abstract_canon_sha256":"fe918481cc5ebe01cbed5758fa033e013eddede6ad2b17ac8327dd3d2890c1a1"},"schema_version":"1.0"},"canonical_sha256":"68e3439b7047607a0adbe3173eb808a14632c64cb16e4bf4178aa4ec2a3e48f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:26:53.019962Z","signature_b64":"q8EZDT+RCgCotpW8VMXgJ/ZuOZV4psQqQRcdmTapstRfQabVcmlr7pXZMhqbv2X1FrdU4sMU4FFrzlHcJ19nCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68e3439b7047607a0adbe3173eb808a14632c64cb16e4bf4178aa4ec2a3e48f7","last_reissued_at":"2026-07-05T02:26:53.019553Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:26:53.019553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.03498","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":"2026-07-05T02:26:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8en7XKfB2iTWdADOHQ1XFGxhtYyJQ+rTyTo5Wads6B7IQ6lPE9tAVPF/kCHCCYQ2VEyewenc39tE+SmoKnrvCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T09:16:43.028870Z"},"content_sha256":"6a5651116100f26e58f68b4d43d1e16f811170baaee56f348171e5785831ec6d","schema_version":"1.0","event_id":"sha256:6a5651116100f26e58f68b4d43d1e16f811170baaee56f348171e5785831ec6d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:NDRUHG3QI5QHUCW34MLT5OAIUF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cross-correlations as a Diagnostic Tool for Primordial Gravitational Waves","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":"Ameek Malhotra, Ema Dimastrogiovanni, Maresuke Shiraishi, Matteo Fasiello","submitted_at":"2020-12-07T07:44:41Z","abstract_excerpt":"We explore and corroborate, by working out explicit examples, the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluctuations as a way to establish the primordial nature of a given gravitational wave signal. We consider the case of gravitational wave anisotropies induced by scalar-tensor-tensor primordial non-Gaussianity. Our analysis spans anisotropies exhibiting different angular behaviours, including a quadrupolar dependence. We calculate the expected uncertainty on the non-linearity parameter $F_{\\rm NL}$ obtained as a result o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.03498","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/2012.03498/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":"2026-07-05T02:26:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VJqTlq9dQ8rJpfzsdTQjjXZ7VtAUDEr/G9EO8Eu5cbnMvwzFMvxBPli01fqadD/AZfffr21lzbomQ3crxENmAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T09:16:43.029522Z"},"content_sha256":"ea446836646df4bfb7674a9fb10dac0608e2e5c7505b7442004c5b54b7ab2355","schema_version":"1.0","event_id":"sha256:ea446836646df4bfb7674a9fb10dac0608e2e5c7505b7442004c5b54b7ab2355"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/bundle.json","state_url":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/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":"2026-08-19T09:16:43Z","links":{"resolver":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF","bundle":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/bundle.json","state":"https://pith.science/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NDRUHG3QI5QHUCW34MLT5OAIUF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:NDRUHG3QI5QHUCW34MLT5OAIUF","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":"fe918481cc5ebe01cbed5758fa033e013eddede6ad2b17ac8327dd3d2890c1a1","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":"2020-12-07T07:44:41Z","title_canon_sha256":"4b2bcdab52a1914faba11881884cafbfa3e191d7d2336197d19e23209434c63e"},"schema_version":"1.0","source":{"id":"2012.03498","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.03498","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"arxiv_version","alias_value":"2012.03498v2","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.03498","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"pith_short_12","alias_value":"NDRUHG3QI5QH","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"NDRUHG3QI5QHUCW3","created_at":"2026-07-05T02:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"NDRUHG3Q","created_at":"2026-07-05T02:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:ea446836646df4bfb7674a9fb10dac0608e2e5c7505b7442004c5b54b7ab2355","target":"graph","created_at":"2026-07-05T02:26:53Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2012.03498/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We explore and corroborate, by working out explicit examples, the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluctuations as a way to establish the primordial nature of a given gravitational wave signal. We consider the case of gravitational wave anisotropies induced by scalar-tensor-tensor primordial non-Gaussianity. Our analysis spans anisotropies exhibiting different angular behaviours, including a quadrupolar dependence. We calculate the expected uncertainty on the non-linearity parameter $F_{\\rm NL}$ obtained as a result o","authors_text":"Ameek Malhotra, Ema Dimastrogiovanni, Maresuke Shiraishi, Matteo Fasiello","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":"2020-12-07T07:44:41Z","title":"Cross-correlations as a Diagnostic Tool for Primordial Gravitational Waves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.03498","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":"sha256:6a5651116100f26e58f68b4d43d1e16f811170baaee56f348171e5785831ec6d","target":"record","created_at":"2026-07-05T02:26:53Z","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":"fe918481cc5ebe01cbed5758fa033e013eddede6ad2b17ac8327dd3d2890c1a1","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":"2020-12-07T07:44:41Z","title_canon_sha256":"4b2bcdab52a1914faba11881884cafbfa3e191d7d2336197d19e23209434c63e"},"schema_version":"1.0","source":{"id":"2012.03498","kind":"arxiv","version":2}},"canonical_sha256":"68e3439b7047607a0adbe3173eb808a14632c64cb16e4bf4178aa4ec2a3e48f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68e3439b7047607a0adbe3173eb808a14632c64cb16e4bf4178aa4ec2a3e48f7","first_computed_at":"2026-07-05T02:26:53.019553Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:26:53.019553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q8EZDT+RCgCotpW8VMXgJ/ZuOZV4psQqQRcdmTapstRfQabVcmlr7pXZMhqbv2X1FrdU4sMU4FFrzlHcJ19nCg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:26:53.019962Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.03498","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6a5651116100f26e58f68b4d43d1e16f811170baaee56f348171e5785831ec6d","sha256:ea446836646df4bfb7674a9fb10dac0608e2e5c7505b7442004c5b54b7ab2355"],"state_sha256":"46f08f3c2af49170be61aa7551022bef82780775ee79a5b3fbff360c068e6f11"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9+morfgM1jPhn2WtnoqGSItTkpg+ozstZQjBdZj6qqG/h+DiMlidcERa8u7vwrVjBPOsmZHUS04lYDS9YpdvDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T09:16:43.033697Z","bundle_sha256":"6588effac2892ec6ecbcb347c9f7526e8cb8e0441c73031f1ace8e616618e00f"}}