{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:2EOMMOP6QXZE4DC6OBFDMJYDR4","short_pith_number":"pith:2EOMMOP6","canonical_record":{"source":{"id":"2001.04474","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-13T19:00:00Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"a8eb55f5d664555ef0751c54b8ac249fdb64f288679a4bb48e211428069e218b","abstract_canon_sha256":"76423e686334aa3c10ceafd08052dbf760989c1762d801ed5083e62e64e7bc99"},"schema_version":"1.0"},"canonical_sha256":"d11cc639fe85f24e0c5e704a3627038f3ca98978e3c161be3edb33c6fb9e9349","source":{"kind":"arxiv","id":"2001.04474","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.04474","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"arxiv_version","alias_value":"2001.04474v2","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.04474","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"pith_short_12","alias_value":"2EOMMOP6QXZE","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"pith_short_16","alias_value":"2EOMMOP6QXZE4DC6","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"pith_short_8","alias_value":"2EOMMOP6","created_at":"2026-07-05T00:39:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:2EOMMOP6QXZE4DC6OBFDMJYDR4","target":"record","payload":{"canonical_record":{"source":{"id":"2001.04474","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-13T19:00:00Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"a8eb55f5d664555ef0751c54b8ac249fdb64f288679a4bb48e211428069e218b","abstract_canon_sha256":"76423e686334aa3c10ceafd08052dbf760989c1762d801ed5083e62e64e7bc99"},"schema_version":"1.0"},"canonical_sha256":"d11cc639fe85f24e0c5e704a3627038f3ca98978e3c161be3edb33c6fb9e9349","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:39:16.485256Z","signature_b64":"HKZrz00Wh6W3giiDyhjk38Zj7OxtKFYsnnJzYL6Ds13riIQdEv0TOzgczOm92Ur4gPF1KueG7Lu7nbsQWS/kDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d11cc639fe85f24e0c5e704a3627038f3ca98978e3c161be3edb33c6fb9e9349","last_reissued_at":"2026-07-05T00:39:16.484853Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:39:16.484853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.04474","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":"2026-07-05T00:39:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EgyP3uXN6hmfk2K/2sNOUB41S3nfR5nYXXAbRxQlF603zRuyTdt2zEQC1t2aEvkxLIWacdghONf+XIDUgK42Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T00:09:54.072987Z"},"content_sha256":"ca007358950e5ce16794ad5f6a0a7fc4bbc9570d013c47671a644140aa7239ab","schema_version":"1.0","event_id":"sha256:ca007358950e5ce16794ad5f6a0a7fc4bbc9570d013c47671a644140aa7239ab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:2EOMMOP6QXZE4DC6OBFDMJYDR4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the possibility of GW190425 being a black hole--neutron star binary merger","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Kenta Kiuchi, Kota Hayashi, Koutarou Kyutoku, Kyohei Kawaguchi, Masaomi Tanaka, Masaru Shibata, Sho Fujibayashi","submitted_at":"2020-01-13T19:00:00Z","abstract_excerpt":"We argue that the kilonova/macronova associated with the gravitational-wave event GW190425 could have been bright enough to be detected if it was caused by the merger of a low-mass black hole and a neutron star. Although tidal disruption occurs for such a low-mass black hole as is generally expected, the masses of the dynamical ejecta are limited to <~10^{-3}M_sun, which is consistent with previous work in the literature. The remnant disk could be as massive as 0.05--0.1M_sun, and the disk outflow of ~0.01--0.03M_sun is likely to be driven by viscous or magnetohydrodynamic effects. The disk ou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.04474","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/2001.04474/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":"2026-07-05T00:39:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pTdpNLsHBvMVdDMUkBJ5CDdcweFtH6c9A3/CYBH1/ILkxcI7SHbYn8EWYVwFI2DIyd0rxzweXBGDiCgjSnW+Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T00:09:54.073648Z"},"content_sha256":"063eddfafa9f345a0c8607b153935022004c923186721e2d4442137d716400c1","schema_version":"1.0","event_id":"sha256:063eddfafa9f345a0c8607b153935022004c923186721e2d4442137d716400c1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2EOMMOP6QXZE4DC6OBFDMJYDR4/bundle.json","state_url":"https://pith.science/pith/2EOMMOP6QXZE4DC6OBFDMJYDR4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2EOMMOP6QXZE4DC6OBFDMJYDR4/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":"2026-08-02T00:09:54Z","links":{"resolver":"https://pith.science/pith/2EOMMOP6QXZE4DC6OBFDMJYDR4","bundle":"https://pith.science/pith/2EOMMOP6QXZE4DC6OBFDMJYDR4/bundle.json","state":"https://pith.science/pith/2EOMMOP6QXZE4DC6OBFDMJYDR4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2EOMMOP6QXZE4DC6OBFDMJYDR4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:2EOMMOP6QXZE4DC6OBFDMJYDR4","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":"76423e686334aa3c10ceafd08052dbf760989c1762d801ed5083e62e64e7bc99","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-13T19:00:00Z","title_canon_sha256":"a8eb55f5d664555ef0751c54b8ac249fdb64f288679a4bb48e211428069e218b"},"schema_version":"1.0","source":{"id":"2001.04474","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.04474","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"arxiv_version","alias_value":"2001.04474v2","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.04474","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"pith_short_12","alias_value":"2EOMMOP6QXZE","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"pith_short_16","alias_value":"2EOMMOP6QXZE4DC6","created_at":"2026-07-05T00:39:16Z"},{"alias_kind":"pith_short_8","alias_value":"2EOMMOP6","created_at":"2026-07-05T00:39:16Z"}],"graph_snapshots":[{"event_id":"sha256:063eddfafa9f345a0c8607b153935022004c923186721e2d4442137d716400c1","target":"graph","created_at":"2026-07-05T00:39:16Z","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/2001.04474/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We argue that the kilonova/macronova associated with the gravitational-wave event GW190425 could have been bright enough to be detected if it was caused by the merger of a low-mass black hole and a neutron star. Although tidal disruption occurs for such a low-mass black hole as is generally expected, the masses of the dynamical ejecta are limited to <~10^{-3}M_sun, which is consistent with previous work in the literature. The remnant disk could be as massive as 0.05--0.1M_sun, and the disk outflow of ~0.01--0.03M_sun is likely to be driven by viscous or magnetohydrodynamic effects. The disk ou","authors_text":"Kenta Kiuchi, Kota Hayashi, Koutarou Kyutoku, Kyohei Kawaguchi, Masaomi Tanaka, Masaru Shibata, Sho Fujibayashi","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-13T19:00:00Z","title":"On the possibility of GW190425 being a black hole--neutron star binary merger"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.04474","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:ca007358950e5ce16794ad5f6a0a7fc4bbc9570d013c47671a644140aa7239ab","target":"record","created_at":"2026-07-05T00:39:16Z","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":"76423e686334aa3c10ceafd08052dbf760989c1762d801ed5083e62e64e7bc99","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-13T19:00:00Z","title_canon_sha256":"a8eb55f5d664555ef0751c54b8ac249fdb64f288679a4bb48e211428069e218b"},"schema_version":"1.0","source":{"id":"2001.04474","kind":"arxiv","version":2}},"canonical_sha256":"d11cc639fe85f24e0c5e704a3627038f3ca98978e3c161be3edb33c6fb9e9349","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d11cc639fe85f24e0c5e704a3627038f3ca98978e3c161be3edb33c6fb9e9349","first_computed_at":"2026-07-05T00:39:16.484853Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:39:16.484853Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HKZrz00Wh6W3giiDyhjk38Zj7OxtKFYsnnJzYL6Ds13riIQdEv0TOzgczOm92Ur4gPF1KueG7Lu7nbsQWS/kDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:39:16.485256Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.04474","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca007358950e5ce16794ad5f6a0a7fc4bbc9570d013c47671a644140aa7239ab","sha256:063eddfafa9f345a0c8607b153935022004c923186721e2d4442137d716400c1"],"state_sha256":"d07d295b5c731dee558c3af5bddce157fe6a685c77d0dff9687702e89ad7321c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qmy3a319gsBkbFnrS1VVwgzyVgVNCZFlnTu5JDKtmB2CdcNwg2GTDVPDd5l+ePQukGyAPyEaxuvqHbuwAMo5Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T00:09:54.078988Z","bundle_sha256":"e7bbdc889979ad179b19a30c49bf40308b8a644db71e244e051a38be97556529"}}