{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:6KVATCXPRXCOUJLWRAUK7BFJYJ","short_pith_number":"pith:6KVATCXP","canonical_record":{"source":{"id":"1002.2643","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-02-13T19:40:05Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"7531897f6f2f65722538ab2d399d1a2b1acd4a7d6f4811a5bcf9269e18bf196b","abstract_canon_sha256":"36f2f647bd87b96d08d96bf83652a6e354f0c0a73024fad2e5dc0b7add0ee13c"},"schema_version":"1.0"},"canonical_sha256":"f2aa098aef8dc4ea25768828af84a9c24a51a1cf31fbc48a1a067577e4d7d022","source":{"kind":"arxiv","id":"1002.2643","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.2643","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"arxiv_version","alias_value":"1002.2643v2","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.2643","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"pith_short_12","alias_value":"6KVATCXPRXCO","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"pith_short_16","alias_value":"6KVATCXPRXCOUJLW","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"pith_short_8","alias_value":"6KVATCXP","created_at":"2026-07-04T17:28:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:6KVATCXPRXCOUJLWRAUK7BFJYJ","target":"record","payload":{"canonical_record":{"source":{"id":"1002.2643","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-02-13T19:40:05Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"7531897f6f2f65722538ab2d399d1a2b1acd4a7d6f4811a5bcf9269e18bf196b","abstract_canon_sha256":"36f2f647bd87b96d08d96bf83652a6e354f0c0a73024fad2e5dc0b7add0ee13c"},"schema_version":"1.0"},"canonical_sha256":"f2aa098aef8dc4ea25768828af84a9c24a51a1cf31fbc48a1a067577e4d7d022","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:28:17.678631Z","signature_b64":"R7zONn35O///AZGHyqNN0ZC2NKdJ5bu16xdHkZe9758GHX18P3a9/BDqRE5RXe6rG0gWJkTRRXnrITD5awGcCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2aa098aef8dc4ea25768828af84a9c24a51a1cf31fbc48a1a067577e4d7d022","last_reissued_at":"2026-07-04T17:28:17.678218Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:28:17.678218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1002.2643","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":"2026-07-04T17:28:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XNCtVISMDr/zl2XcLxs5RZ4wXO8IOH1pFu+FZbNZkgxWdGs5Y7E5/cxcooqfV7YhtQovdEuJW2vcQhtFgD0qAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T01:40:44.473885Z"},"content_sha256":"ed16b80de18362cf687a9c7904a7c2b9e75ee18f5ba1c7caececeafc4ea29953","schema_version":"1.0","event_id":"sha256:ed16b80de18362cf687a9c7904a7c2b9e75ee18f5ba1c7caececeafc4ea29953"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:6KVATCXPRXCOUJLWRAUK7BFJYJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Final spins from the merger of precessing binary black holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.GA","authors_text":"Emanuele Berti, Michael Kesden, Ulrich Sperhake","submitted_at":"2010-02-13T19:40:05Z","abstract_excerpt":"The inspiral of binary black holes is governed by gravitational radiation reaction at binary separations r < 1000 M, yet it is too computationally expensive to begin numerical-relativity simulations with initial separations r > 10 M. Fortunately, binary evolution between these separations is well described by post-Newtonian equations of motion. We examine how this post-Newtonian evolution affects the distribution of spin orientations at separations r ~ 10 M where numerical-relativity simulations typically begin. Although isotropic spin distributions at r ~ 1000 M remain isotropic at r ~ 10 M, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.2643","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/1002.2643/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":"2026-07-04T17:28:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"62Fcyb0r6Pj8kYMsMOEcgy1VurptKeFj8QutfO7oJVO8obaJtGZuhu0qIisw+u9jqdoViKg6Zft4HeHAPfjaAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T01:40:44.474399Z"},"content_sha256":"d72b566579c6d98d4aec181df40c83f21371011b8f1aba3cee7098d676a7152c","schema_version":"1.0","event_id":"sha256:d72b566579c6d98d4aec181df40c83f21371011b8f1aba3cee7098d676a7152c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6KVATCXPRXCOUJLWRAUK7BFJYJ/bundle.json","state_url":"https://pith.science/pith/6KVATCXPRXCOUJLWRAUK7BFJYJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6KVATCXPRXCOUJLWRAUK7BFJYJ/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":"2026-08-16T01:40:44Z","links":{"resolver":"https://pith.science/pith/6KVATCXPRXCOUJLWRAUK7BFJYJ","bundle":"https://pith.science/pith/6KVATCXPRXCOUJLWRAUK7BFJYJ/bundle.json","state":"https://pith.science/pith/6KVATCXPRXCOUJLWRAUK7BFJYJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6KVATCXPRXCOUJLWRAUK7BFJYJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:6KVATCXPRXCOUJLWRAUK7BFJYJ","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":"36f2f647bd87b96d08d96bf83652a6e354f0c0a73024fad2e5dc0b7add0ee13c","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-02-13T19:40:05Z","title_canon_sha256":"7531897f6f2f65722538ab2d399d1a2b1acd4a7d6f4811a5bcf9269e18bf196b"},"schema_version":"1.0","source":{"id":"1002.2643","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.2643","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"arxiv_version","alias_value":"1002.2643v2","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.2643","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"pith_short_12","alias_value":"6KVATCXPRXCO","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"pith_short_16","alias_value":"6KVATCXPRXCOUJLW","created_at":"2026-07-04T17:28:17Z"},{"alias_kind":"pith_short_8","alias_value":"6KVATCXP","created_at":"2026-07-04T17:28:17Z"}],"graph_snapshots":[{"event_id":"sha256:d72b566579c6d98d4aec181df40c83f21371011b8f1aba3cee7098d676a7152c","target":"graph","created_at":"2026-07-04T17:28:17Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1002.2643/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The inspiral of binary black holes is governed by gravitational radiation reaction at binary separations r < 1000 M, yet it is too computationally expensive to begin numerical-relativity simulations with initial separations r > 10 M. Fortunately, binary evolution between these separations is well described by post-Newtonian equations of motion. We examine how this post-Newtonian evolution affects the distribution of spin orientations at separations r ~ 10 M where numerical-relativity simulations typically begin. Although isotropic spin distributions at r ~ 1000 M remain isotropic at r ~ 10 M, ","authors_text":"Emanuele Berti, Michael Kesden, Ulrich Sperhake","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-02-13T19:40:05Z","title":"Final spins from the merger of precessing binary black holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.2643","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:ed16b80de18362cf687a9c7904a7c2b9e75ee18f5ba1c7caececeafc4ea29953","target":"record","created_at":"2026-07-04T17:28:17Z","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":"36f2f647bd87b96d08d96bf83652a6e354f0c0a73024fad2e5dc0b7add0ee13c","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-02-13T19:40:05Z","title_canon_sha256":"7531897f6f2f65722538ab2d399d1a2b1acd4a7d6f4811a5bcf9269e18bf196b"},"schema_version":"1.0","source":{"id":"1002.2643","kind":"arxiv","version":2}},"canonical_sha256":"f2aa098aef8dc4ea25768828af84a9c24a51a1cf31fbc48a1a067577e4d7d022","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2aa098aef8dc4ea25768828af84a9c24a51a1cf31fbc48a1a067577e4d7d022","first_computed_at":"2026-07-04T17:28:17.678218Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:28:17.678218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R7zONn35O///AZGHyqNN0ZC2NKdJ5bu16xdHkZe9758GHX18P3a9/BDqRE5RXe6rG0gWJkTRRXnrITD5awGcCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:28:17.678631Z","signed_message":"canonical_sha256_bytes"},"source_id":"1002.2643","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ed16b80de18362cf687a9c7904a7c2b9e75ee18f5ba1c7caececeafc4ea29953","sha256:d72b566579c6d98d4aec181df40c83f21371011b8f1aba3cee7098d676a7152c"],"state_sha256":"20b35f9fc6c5790c1e426fbd057730a7a5d4ad9190ae601c4ffddb324165979b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eFMXC9i+bm7ed2y8/g96MRdp2f+8aMB6LXlZJGs6sPjgnUetQJZIDPYD9G6BNkWkd/VAr3GhEpK1Q7coEAN5Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T01:40:44.479867Z","bundle_sha256":"3348a3301e48f9f1470e4a13d77353d39489d4967aa008a008fda9578e478f11"}}