{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:DTEWS4433K3AA3UUCCTLYV3SAY","short_pith_number":"pith:DTEWS443","canonical_record":{"source":{"id":"2004.14242","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-29T14:45:07Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"5ae4b05a0572aa15d31d9fe4bf1f69e82f54059a368d2372db394be476e65dc9","abstract_canon_sha256":"7a83d8cd4bea1ba0a0d2d170c69970e822a1ff43d00e4eff34b04d00d22d93bd"},"schema_version":"1.0"},"canonical_sha256":"1cc969739bdab6006e9410a6bc577206119cd0d3cf678cf0b102dd1dbc44699f","source":{"kind":"arxiv","id":"2004.14242","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.14242","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"arxiv_version","alias_value":"2004.14242v2","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.14242","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"pith_short_12","alias_value":"DTEWS4433K3A","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"pith_short_16","alias_value":"DTEWS4433K3AA3UU","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"pith_short_8","alias_value":"DTEWS443","created_at":"2026-07-05T01:06:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:DTEWS4433K3AA3UUCCTLYV3SAY","target":"record","payload":{"canonical_record":{"source":{"id":"2004.14242","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-29T14:45:07Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"5ae4b05a0572aa15d31d9fe4bf1f69e82f54059a368d2372db394be476e65dc9","abstract_canon_sha256":"7a83d8cd4bea1ba0a0d2d170c69970e822a1ff43d00e4eff34b04d00d22d93bd"},"schema_version":"1.0"},"canonical_sha256":"1cc969739bdab6006e9410a6bc577206119cd0d3cf678cf0b102dd1dbc44699f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:06:21.601322Z","signature_b64":"ENPzhUad22vdNGXxNha2jCkwuJdiNGWkESIIjptn4v7rmGkRmxlnh9tH94gpCgjNYsFftVFqptxNA4E7Iit3BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1cc969739bdab6006e9410a6bc577206119cd0d3cf678cf0b102dd1dbc44699f","last_reissued_at":"2026-07-05T01:06:21.600818Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:06:21.600818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.14242","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":"2026-07-05T01:06:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TRo3f6LrrmZwKY7IkdagYCoYn8IIHq3hOJL4khcXxaHehNfX7kiQLeAkIMOQ7q+gqTTjwYIsFJfXfMXslt/mBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:17:30.633766Z"},"content_sha256":"adfe7955b129c97bc8e258e855512aa784a67e922a4d13783172d8ba8790bb6b","schema_version":"1.0","event_id":"sha256:adfe7955b129c97bc8e258e855512aa784a67e922a4d13783172d8ba8790bb6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:DTEWS4433K3AA3UUCCTLYV3SAY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Science with the TianQin observatory: Preliminary results on stellar-mass binary black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Jian-dong Zhang, Jianwei Mei, Shuai Liu, Yi-Ming Hu","submitted_at":"2020-04-29T14:45:07Z","abstract_excerpt":"We study the prospect of using TianQin to detect stellar-mass binary black holes (SBBHs). We estimate the expected detection number as well as the precision of parameter estimation on SBBH inspirals, using five different population models. We note TianQin can possibly detect a few SBBH inspirals with signal to noise ratios greater than 12; lowering the threshold and combining multiple detectors can both boost the detection number. The source parameters can be recovered with good precision for most events above the detection threshold. For example, the precision of the merger time most likely o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.14242","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/2004.14242/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":"2026-07-05T01:06:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n7hnBH72xMnx4EkV+aP75GF/aWHRJn+fe8zhpzNnfhcaaZ5CX48jTQCmNqNTnU/svQnRGNx0SmmU4NViYLV1CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:17:30.634280Z"},"content_sha256":"a6f8b0081d35a3973966299327fcaf472c1ba933a904fe13683ea397f9f5175c","schema_version":"1.0","event_id":"sha256:a6f8b0081d35a3973966299327fcaf472c1ba933a904fe13683ea397f9f5175c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DTEWS4433K3AA3UUCCTLYV3SAY/bundle.json","state_url":"https://pith.science/pith/DTEWS4433K3AA3UUCCTLYV3SAY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DTEWS4433K3AA3UUCCTLYV3SAY/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":"2026-08-09T21:17:30Z","links":{"resolver":"https://pith.science/pith/DTEWS4433K3AA3UUCCTLYV3SAY","bundle":"https://pith.science/pith/DTEWS4433K3AA3UUCCTLYV3SAY/bundle.json","state":"https://pith.science/pith/DTEWS4433K3AA3UUCCTLYV3SAY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DTEWS4433K3AA3UUCCTLYV3SAY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:DTEWS4433K3AA3UUCCTLYV3SAY","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":"7a83d8cd4bea1ba0a0d2d170c69970e822a1ff43d00e4eff34b04d00d22d93bd","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-29T14:45:07Z","title_canon_sha256":"5ae4b05a0572aa15d31d9fe4bf1f69e82f54059a368d2372db394be476e65dc9"},"schema_version":"1.0","source":{"id":"2004.14242","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.14242","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"arxiv_version","alias_value":"2004.14242v2","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.14242","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"pith_short_12","alias_value":"DTEWS4433K3A","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"pith_short_16","alias_value":"DTEWS4433K3AA3UU","created_at":"2026-07-05T01:06:21Z"},{"alias_kind":"pith_short_8","alias_value":"DTEWS443","created_at":"2026-07-05T01:06:21Z"}],"graph_snapshots":[{"event_id":"sha256:a6f8b0081d35a3973966299327fcaf472c1ba933a904fe13683ea397f9f5175c","target":"graph","created_at":"2026-07-05T01:06:21Z","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/2004.14242/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the prospect of using TianQin to detect stellar-mass binary black holes (SBBHs). We estimate the expected detection number as well as the precision of parameter estimation on SBBH inspirals, using five different population models. We note TianQin can possibly detect a few SBBH inspirals with signal to noise ratios greater than 12; lowering the threshold and combining multiple detectors can both boost the detection number. The source parameters can be recovered with good precision for most events above the detection threshold. For example, the precision of the merger time most likely o","authors_text":"Jian-dong Zhang, Jianwei Mei, Shuai Liu, Yi-Ming Hu","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-29T14:45:07Z","title":"Science with the TianQin observatory: Preliminary results on stellar-mass binary black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.14242","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:adfe7955b129c97bc8e258e855512aa784a67e922a4d13783172d8ba8790bb6b","target":"record","created_at":"2026-07-05T01:06:21Z","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":"7a83d8cd4bea1ba0a0d2d170c69970e822a1ff43d00e4eff34b04d00d22d93bd","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-04-29T14:45:07Z","title_canon_sha256":"5ae4b05a0572aa15d31d9fe4bf1f69e82f54059a368d2372db394be476e65dc9"},"schema_version":"1.0","source":{"id":"2004.14242","kind":"arxiv","version":2}},"canonical_sha256":"1cc969739bdab6006e9410a6bc577206119cd0d3cf678cf0b102dd1dbc44699f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1cc969739bdab6006e9410a6bc577206119cd0d3cf678cf0b102dd1dbc44699f","first_computed_at":"2026-07-05T01:06:21.600818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:06:21.600818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ENPzhUad22vdNGXxNha2jCkwuJdiNGWkESIIjptn4v7rmGkRmxlnh9tH94gpCgjNYsFftVFqptxNA4E7Iit3BA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:06:21.601322Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.14242","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:adfe7955b129c97bc8e258e855512aa784a67e922a4d13783172d8ba8790bb6b","sha256:a6f8b0081d35a3973966299327fcaf472c1ba933a904fe13683ea397f9f5175c"],"state_sha256":"b6b2c69ca1b80cf9841679dcc8ac75b9d7ff4d40dbd5f392b88ed75eb4a29d34"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ar2a0b9twvrkOI+eF/DR1pOBn+Y5LeB4I2o+KBEQ1/+Cy3twrBDjAGjZbVEFxhQXXrNQiQSWSPMyupYHwDQFBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T21:17:30.638976Z","bundle_sha256":"7b1806154bd79594cbdd84507c396b8e3b64cc9d6d9e8eb66f68d42552054bfa"}}