{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:SXVYYT7UDFEDEYDXL2ZS2JHFAA","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":"f09affeed7bfbd9c48d9f5dad7ce17714cf40420b62a31d37dd05b38c19bdd77","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-14T07:02:08Z","title_canon_sha256":"4a99df3545f54d5ed31609735b4e6689c35f55a902a5ad287f5c20a7e55b555d"},"schema_version":"1.0","source":{"id":"1908.04985","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.04985","created_at":"2026-07-05T01:08:24Z"},{"alias_kind":"arxiv_version","alias_value":"1908.04985v1","created_at":"2026-07-05T01:08:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04985","created_at":"2026-07-05T01:08:24Z"},{"alias_kind":"pith_short_12","alias_value":"SXVYYT7UDFED","created_at":"2026-07-05T01:08:24Z"},{"alias_kind":"pith_short_16","alias_value":"SXVYYT7UDFEDEYDX","created_at":"2026-07-05T01:08:24Z"},{"alias_kind":"pith_short_8","alias_value":"SXVYYT7U","created_at":"2026-07-05T01:08:24Z"}],"graph_snapshots":[{"event_id":"sha256:e1b8b3cbd07d22562a8ea29c329c4753499e81e53c1dd377e202d5b1c60b3b4c","target":"graph","created_at":"2026-07-05T01:08:24Z","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/1908.04985/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The direct measurement of gravitational waves is a powerful tool for surveying the population of black holes across the universe. The first gravitational wave catalog from LIGO has detected black holes as heavy as $\\sim50~M_\\odot$, colliding when our Universe was about half its current age. However, there is yet no unambiguous evidence of black holes in the intermediate-mass range of $10^{2-5}~M_\\odot$. Recent electromagnetic observations have hinted at the existence of IMBHs in the local universe; however, their masses are poorly constrained. The likely formation mechanisms of IMBHs are also ","authors_text":"Curt Cutler, Deirdre Shoemaker, Karan Jani","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-14T07:02:08Z","title":"Detectability of Intermediate-Mass Black Holes in Multiband Gravitational Wave Astronomy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04985","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":"sha256:1dc04d2504f48665769dc2b55388949e2b417899042895ae2c6a894d57ece2a7","target":"record","created_at":"2026-07-05T01:08:24Z","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":"f09affeed7bfbd9c48d9f5dad7ce17714cf40420b62a31d37dd05b38c19bdd77","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-14T07:02:08Z","title_canon_sha256":"4a99df3545f54d5ed31609735b4e6689c35f55a902a5ad287f5c20a7e55b555d"},"schema_version":"1.0","source":{"id":"1908.04985","kind":"arxiv","version":1}},"canonical_sha256":"95eb8c4ff419483260775eb32d24e5003bf1e51d38fc3aa22b6289e5fc149743","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95eb8c4ff419483260775eb32d24e5003bf1e51d38fc3aa22b6289e5fc149743","first_computed_at":"2026-07-05T01:08:24.349001Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:08:24.349001Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DTsWYx/r8bTbuU8WWVHXC3hL1scjMQFV5Wp41g6H0J3yTP8ss7I4kGknMoubWXeF7TrFLnW/5cl1hNBckHM6CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:08:24.349443Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.04985","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1dc04d2504f48665769dc2b55388949e2b417899042895ae2c6a894d57ece2a7","sha256:e1b8b3cbd07d22562a8ea29c329c4753499e81e53c1dd377e202d5b1c60b3b4c"],"state_sha256":"cdcd28114894c59ab1ecc655fc3e560810456ad6e96abedb93614af4f529106a"}