{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:A53HGSPNRAKVWOYN5XVZ3M4GM6","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":"8d4af45db769329251ff6fb0556b9d99307bba27e159996c05466b9017e3749e","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-27T17:15:28Z","title_canon_sha256":"3d76e3e44e874a307831f02e2b21cbd512cd304965e12681267ff34348994724"},"schema_version":"1.0","source":{"id":"1510.07994","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07994","created_at":"2026-05-18T01:16:17Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07994v1","created_at":"2026-05-18T01:16:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07994","created_at":"2026-05-18T01:16:17Z"},{"alias_kind":"pith_short_12","alias_value":"A53HGSPNRAKV","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"A53HGSPNRAKVWOYN","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"A53HGSPN","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:895024d61e26a992de6daf527f6d31dafc35d9c115d9449dddd0d7705825a976","target":"graph","created_at":"2026-05-18T01:16:17Z","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":"A Gravitational Wave Background (GWB) is expected in the universe from the superposition of a large number of unresolved astrophysical sources and phenomena in the early universe. Each component of the background (e.g., from primordial metric perturbations, binary neutron stars, milli-second pulsars etc.) has its own spectral shape. Many ongoing experiments aim to probe GWB at a variety of frequency bands. In the last two decades, using data from ground-based laser interferometric gravitational wave (GW) observatories, upper limits on GWB were placed in the frequency range of ~50-1000 Hz, cons","authors_text":"Abhishek Parida, Sanjay Jhingan, Sanjit Mitra","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-27T17:15:28Z","title":"Component Separation of a Isotropic Gravitational Wave Background"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07994","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":"sha256:3e0362afae5f9e210b149234a61dbdde1edf19bb79607409aaaa090fb6d8fd2b","target":"record","created_at":"2026-05-18T01:16:17Z","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":"8d4af45db769329251ff6fb0556b9d99307bba27e159996c05466b9017e3749e","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-10-27T17:15:28Z","title_canon_sha256":"3d76e3e44e874a307831f02e2b21cbd512cd304965e12681267ff34348994724"},"schema_version":"1.0","source":{"id":"1510.07994","kind":"arxiv","version":1}},"canonical_sha256":"07767349ed88155b3b0dedeb9db38667a40bc8c9ca1f74bda98bbfee0a9f0b3d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"07767349ed88155b3b0dedeb9db38667a40bc8c9ca1f74bda98bbfee0a9f0b3d","first_computed_at":"2026-05-18T01:16:17.444561Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:17.444561Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yizPWrFeRp6SxEEW7XR3G9Ta5l8QqXwAYS2vBYfvxvxUidaDYezzIlaWXPX4fWZ+nR52H0v/MfkAMdlYgS8EAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:17.445240Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07994","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e0362afae5f9e210b149234a61dbdde1edf19bb79607409aaaa090fb6d8fd2b","sha256:895024d61e26a992de6daf527f6d31dafc35d9c115d9449dddd0d7705825a976"],"state_sha256":"06aaaa5faf9b7717117116916b3f71e1b54fd1234b454a6c3d350eb5293f8f9f"}