{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:CCNDDMLWL4NVWEEEEZ7I7UONUF","short_pith_number":"pith:CCNDDMLW","canonical_record":{"source":{"id":"2007.01339","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:47:36Z","cross_cats_sorted":[],"title_canon_sha256":"c30509241c842a8d1334a63aad78330357d03d7b96390b4a8b40974e412c1eb2","abstract_canon_sha256":"38da7ceaee8e3f06698f2c0d1214ad3cfc395555e5d235e41650f24101c91ae4"},"schema_version":"1.0"},"canonical_sha256":"109a31b1765f1b5b1084267e8fd1cda177e1845e5af7b77ef036ff68a44638b8","source":{"kind":"arxiv","id":"2007.01339","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01339","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01339v2","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01339","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"pith_short_12","alias_value":"CCNDDMLWL4NV","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"pith_short_16","alias_value":"CCNDDMLWL4NVWEEE","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"pith_short_8","alias_value":"CCNDDMLW","created_at":"2026-07-05T03:07:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:CCNDDMLWL4NVWEEEEZ7I7UONUF","target":"record","payload":{"canonical_record":{"source":{"id":"2007.01339","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:47:36Z","cross_cats_sorted":[],"title_canon_sha256":"c30509241c842a8d1334a63aad78330357d03d7b96390b4a8b40974e412c1eb2","abstract_canon_sha256":"38da7ceaee8e3f06698f2c0d1214ad3cfc395555e5d235e41650f24101c91ae4"},"schema_version":"1.0"},"canonical_sha256":"109a31b1765f1b5b1084267e8fd1cda177e1845e5af7b77ef036ff68a44638b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:07:43.685373Z","signature_b64":"jYbltVaTHdTrob4Ch3nupBSBgWtOETNqqp2pKQVXjeyWpLxPFSXzOtD8f9XccA6HS4uZTmN+67R8fCIXFUIqCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"109a31b1765f1b5b1084267e8fd1cda177e1845e5af7b77ef036ff68a44638b8","last_reissued_at":"2026-07-05T03:07:43.684884Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:07:43.684884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.01339","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":"2026-07-05T03:07:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EG0kbczh6zRC+Strxy9oiRkgrQ68dWxk+hQLKbNfFWuaKIK+N9tlOfWJVP5vsyrRXp0p3IChYKUdwDccRxGpBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:55:14.187595Z"},"content_sha256":"5e97883e25e9de0cec3a5c55d76a8cdb677c3cfe65e4cf0aa788f43988820911","schema_version":"1.0","event_id":"sha256:5e97883e25e9de0cec3a5c55d76a8cdb677c3cfe65e4cf0aa788f43988820911"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:CCNDDMLWL4NVWEEEEZ7I7UONUF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Improved Cauchy-characteristic evolution system for high-precision numerical relativity waveforms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Jordan Moxon, Mark A. Scheel, Saul A. Teukolsky","submitted_at":"2020-07-02T18:47:36Z","abstract_excerpt":"We present several improvements to the Cauchy-characteristic evolution procedure that generates high-fidelity gravitational waveforms at $\\mathcal{I}^+$ from numerical relativity simulations. Cauchy-characteristic evolution combines an interior solution of the Einstein field equations based on Cauchy slices with an exterior solution based on null slices that extend to $\\mathcal{I}^+$. The foundation of our improved algorithm is a comprehensive method of handling the gauge transformations between the arbitrarily specified coordinates of the interior Cauchy evolution and the unique (up to BMS tr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01339","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/2007.01339/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":"2026-07-05T03:07:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MC6QPNJ/q048ko2gSGPkYVf8mesUIuFph7GmlB4V7VYzacFX4Ov7Ol7Qps0n9k/+KrP8pe/zd/QGM6pRBP97DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:55:14.188814Z"},"content_sha256":"21b46e60ba4b13677fa7702e582d321b965b184c8eb2497dac0a344c7ca986b6","schema_version":"1.0","event_id":"sha256:21b46e60ba4b13677fa7702e582d321b965b184c8eb2497dac0a344c7ca986b6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CCNDDMLWL4NVWEEEEZ7I7UONUF/bundle.json","state_url":"https://pith.science/pith/CCNDDMLWL4NVWEEEEZ7I7UONUF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CCNDDMLWL4NVWEEEEZ7I7UONUF/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":"2026-08-06T15:55:14Z","links":{"resolver":"https://pith.science/pith/CCNDDMLWL4NVWEEEEZ7I7UONUF","bundle":"https://pith.science/pith/CCNDDMLWL4NVWEEEEZ7I7UONUF/bundle.json","state":"https://pith.science/pith/CCNDDMLWL4NVWEEEEZ7I7UONUF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CCNDDMLWL4NVWEEEEZ7I7UONUF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:CCNDDMLWL4NVWEEEEZ7I7UONUF","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":"38da7ceaee8e3f06698f2c0d1214ad3cfc395555e5d235e41650f24101c91ae4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:47:36Z","title_canon_sha256":"c30509241c842a8d1334a63aad78330357d03d7b96390b4a8b40974e412c1eb2"},"schema_version":"1.0","source":{"id":"2007.01339","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01339","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01339v2","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01339","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"pith_short_12","alias_value":"CCNDDMLWL4NV","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"pith_short_16","alias_value":"CCNDDMLWL4NVWEEE","created_at":"2026-07-05T03:07:43Z"},{"alias_kind":"pith_short_8","alias_value":"CCNDDMLW","created_at":"2026-07-05T03:07:43Z"}],"graph_snapshots":[{"event_id":"sha256:21b46e60ba4b13677fa7702e582d321b965b184c8eb2497dac0a344c7ca986b6","target":"graph","created_at":"2026-07-05T03:07:43Z","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/2007.01339/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present several improvements to the Cauchy-characteristic evolution procedure that generates high-fidelity gravitational waveforms at $\\mathcal{I}^+$ from numerical relativity simulations. Cauchy-characteristic evolution combines an interior solution of the Einstein field equations based on Cauchy slices with an exterior solution based on null slices that extend to $\\mathcal{I}^+$. The foundation of our improved algorithm is a comprehensive method of handling the gauge transformations between the arbitrarily specified coordinates of the interior Cauchy evolution and the unique (up to BMS tr","authors_text":"Jordan Moxon, Mark A. Scheel, Saul A. Teukolsky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:47:36Z","title":"Improved Cauchy-characteristic evolution system for high-precision numerical relativity waveforms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01339","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":"sha256:5e97883e25e9de0cec3a5c55d76a8cdb677c3cfe65e4cf0aa788f43988820911","target":"record","created_at":"2026-07-05T03:07:43Z","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":"38da7ceaee8e3f06698f2c0d1214ad3cfc395555e5d235e41650f24101c91ae4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-07-02T18:47:36Z","title_canon_sha256":"c30509241c842a8d1334a63aad78330357d03d7b96390b4a8b40974e412c1eb2"},"schema_version":"1.0","source":{"id":"2007.01339","kind":"arxiv","version":2}},"canonical_sha256":"109a31b1765f1b5b1084267e8fd1cda177e1845e5af7b77ef036ff68a44638b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"109a31b1765f1b5b1084267e8fd1cda177e1845e5af7b77ef036ff68a44638b8","first_computed_at":"2026-07-05T03:07:43.684884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:07:43.684884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jYbltVaTHdTrob4Ch3nupBSBgWtOETNqqp2pKQVXjeyWpLxPFSXzOtD8f9XccA6HS4uZTmN+67R8fCIXFUIqCA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:07:43.685373Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.01339","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e97883e25e9de0cec3a5c55d76a8cdb677c3cfe65e4cf0aa788f43988820911","sha256:21b46e60ba4b13677fa7702e582d321b965b184c8eb2497dac0a344c7ca986b6"],"state_sha256":"5570dd53985012ba2462cf37384b86d2adff86535c96f5e264f7334e53a4e8c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Aua6dsJbQ6LuDX3Zdr71wDa58pvBX4ypI57jbWqqWAsrpJF1ZhZnRM3qNJ6jizhkluHGSZ1bjvoM36LNMDxvAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T15:55:14.194980Z","bundle_sha256":"f1ef76e5366136ce3224ee06045623f38be10944c54160415b6b5ef4e7d0a72f"}}