{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:RK7JK4HQMFFIIYEUPQKEA7WLUT","short_pith_number":"pith:RK7JK4HQ","canonical_record":{"source":{"id":"1806.11160","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-06-28T19:52:19Z","cross_cats_sorted":[],"title_canon_sha256":"beb10e06376d782c28afad5d9a73340c32b3a40604f8150cf3fac1669f6a7e73","abstract_canon_sha256":"fdb4d5502e80467276f5f09148c89c6b8cbf7f6ac4c8d4a534dbca0ef3ee52b7"},"schema_version":"1.0"},"canonical_sha256":"8abe9570f0614a8460947c14407ecba4eada6880fc7b6bd55e5489e01af2ebc6","source":{"kind":"arxiv","id":"1806.11160","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.11160","created_at":"2026-05-18T00:00:52Z"},{"alias_kind":"arxiv_version","alias_value":"1806.11160v2","created_at":"2026-05-18T00:00:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.11160","created_at":"2026-05-18T00:00:52Z"},{"alias_kind":"pith_short_12","alias_value":"RK7JK4HQMFFI","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RK7JK4HQMFFIIYEU","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RK7JK4HQ","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:RK7JK4HQMFFIIYEUPQKEA7WLUT","target":"record","payload":{"canonical_record":{"source":{"id":"1806.11160","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-06-28T19:52:19Z","cross_cats_sorted":[],"title_canon_sha256":"beb10e06376d782c28afad5d9a73340c32b3a40604f8150cf3fac1669f6a7e73","abstract_canon_sha256":"fdb4d5502e80467276f5f09148c89c6b8cbf7f6ac4c8d4a534dbca0ef3ee52b7"},"schema_version":"1.0"},"canonical_sha256":"8abe9570f0614a8460947c14407ecba4eada6880fc7b6bd55e5489e01af2ebc6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:52.730530Z","signature_b64":"QdwtdvQ7MvQ5gVgVjI34zX6e0IXuuwmRV70VWyyrlHazMp/hdfexNQIev0mar3f2+wmDrNes1c/ddBGJVHmiCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8abe9570f0614a8460947c14407ecba4eada6880fc7b6bd55e5489e01af2ebc6","last_reissued_at":"2026-05-18T00:00:52.729924Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:52.729924Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.11160","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":"2026-05-18T00:00:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IA9BZ2VtNDkLM9sMf5KsQ6y4cG8nLMlfw6mgpJyb2e3uPIv1ArFl+Kn36Ouy84c5D9RWN6ows7cPs5m0pkQDBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:03:03.149281Z"},"content_sha256":"00a098e00836ddffa4f82178845994e12d85662705fefed8030b78e8a22004ba","schema_version":"1.0","event_id":"sha256:00a098e00836ddffa4f82178845994e12d85662705fefed8030b78e8a22004ba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:RK7JK4HQMFFIIYEUPQKEA7WLUT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tracking black hole kicks from gravitational wave observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Deirdre Shoemaker, James A. Clark, Juan Calder\\'on Bustillo, Pablo Laguna","submitted_at":"2018-06-28T19:52:19Z","abstract_excerpt":"Coalescing binary black holes emit anisotropic gravitational radiation. This causes a net emission of linear momentum that produces a gradual acceleration of the source. As a result, the final remnant black hole acquires a characteristic velocity known as recoil velocity or gravitational kick. The symmetries of gravitational wave emission are reflected in the interactions of the gravitational wave modes emitted by the binary. In this work we make use of the rich information encoded in the higher-order modes of the gravitational wave emission to infer the component of the kick along the line-of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.11160","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":""},"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":"2026-05-18T00:00:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7DK5ufmaOXa/BAp3mv1fV5DJsVCVTIppPjxc0/e2BeVnpg5RRz7WWNyZOsw0m2sZXqjOgMZQRiWEDspuCmpgBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:03:03.149883Z"},"content_sha256":"1de959279c629472802ae114df52ad8a1bbd32d0f97bcd079ecca9fcf2718fce","schema_version":"1.0","event_id":"sha256:1de959279c629472802ae114df52ad8a1bbd32d0f97bcd079ecca9fcf2718fce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RK7JK4HQMFFIIYEUPQKEA7WLUT/bundle.json","state_url":"https://pith.science/pith/RK7JK4HQMFFIIYEUPQKEA7WLUT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RK7JK4HQMFFIIYEUPQKEA7WLUT/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":"2026-06-05T20:03:03Z","links":{"resolver":"https://pith.science/pith/RK7JK4HQMFFIIYEUPQKEA7WLUT","bundle":"https://pith.science/pith/RK7JK4HQMFFIIYEUPQKEA7WLUT/bundle.json","state":"https://pith.science/pith/RK7JK4HQMFFIIYEUPQKEA7WLUT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RK7JK4HQMFFIIYEUPQKEA7WLUT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RK7JK4HQMFFIIYEUPQKEA7WLUT","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":"fdb4d5502e80467276f5f09148c89c6b8cbf7f6ac4c8d4a534dbca0ef3ee52b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-06-28T19:52:19Z","title_canon_sha256":"beb10e06376d782c28afad5d9a73340c32b3a40604f8150cf3fac1669f6a7e73"},"schema_version":"1.0","source":{"id":"1806.11160","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.11160","created_at":"2026-05-18T00:00:52Z"},{"alias_kind":"arxiv_version","alias_value":"1806.11160v2","created_at":"2026-05-18T00:00:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.11160","created_at":"2026-05-18T00:00:52Z"},{"alias_kind":"pith_short_12","alias_value":"RK7JK4HQMFFI","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RK7JK4HQMFFIIYEU","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RK7JK4HQ","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:1de959279c629472802ae114df52ad8a1bbd32d0f97bcd079ecca9fcf2718fce","target":"graph","created_at":"2026-05-18T00:00:52Z","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":"Coalescing binary black holes emit anisotropic gravitational radiation. This causes a net emission of linear momentum that produces a gradual acceleration of the source. As a result, the final remnant black hole acquires a characteristic velocity known as recoil velocity or gravitational kick. The symmetries of gravitational wave emission are reflected in the interactions of the gravitational wave modes emitted by the binary. In this work we make use of the rich information encoded in the higher-order modes of the gravitational wave emission to infer the component of the kick along the line-of","authors_text":"Deirdre Shoemaker, James A. Clark, Juan Calder\\'on Bustillo, Pablo Laguna","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-06-28T19:52:19Z","title":"Tracking black hole kicks from gravitational wave observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.11160","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":"sha256:00a098e00836ddffa4f82178845994e12d85662705fefed8030b78e8a22004ba","target":"record","created_at":"2026-05-18T00:00:52Z","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":"fdb4d5502e80467276f5f09148c89c6b8cbf7f6ac4c8d4a534dbca0ef3ee52b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-06-28T19:52:19Z","title_canon_sha256":"beb10e06376d782c28afad5d9a73340c32b3a40604f8150cf3fac1669f6a7e73"},"schema_version":"1.0","source":{"id":"1806.11160","kind":"arxiv","version":2}},"canonical_sha256":"8abe9570f0614a8460947c14407ecba4eada6880fc7b6bd55e5489e01af2ebc6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8abe9570f0614a8460947c14407ecba4eada6880fc7b6bd55e5489e01af2ebc6","first_computed_at":"2026-05-18T00:00:52.729924Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:52.729924Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QdwtdvQ7MvQ5gVgVjI34zX6e0IXuuwmRV70VWyyrlHazMp/hdfexNQIev0mar3f2+wmDrNes1c/ddBGJVHmiCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:52.730530Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.11160","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00a098e00836ddffa4f82178845994e12d85662705fefed8030b78e8a22004ba","sha256:1de959279c629472802ae114df52ad8a1bbd32d0f97bcd079ecca9fcf2718fce"],"state_sha256":"e3f96c5df2565017e97c409f389cbe23c07090bba9e1cb70368cfafb63187269"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0/osskn+MRuSrsyDae9FJjravj1LxQSwbwOuEpLX99hGSo5nmds5MyhS1h0Z2iNOMR4n2Gwb3U2ueTYwW0oUAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:03:03.153337Z","bundle_sha256":"1230aae24e1f48be6a1f4fbfc68b046bb97f72b895f708939af408938b350065"}}