{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:Y34ITPPMKFWI75XZUQ4VBEQZYR","short_pith_number":"pith:Y34ITPPM","canonical_record":{"source":{"id":"1106.4841","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-06-23T21:46:52Z","cross_cats_sorted":[],"title_canon_sha256":"1698325ce557466baba0c2a583784e90f5036625045d84ae44509e25a1300064","abstract_canon_sha256":"b34ffd8ab3c8103924ed318599d7388c08afa0bd220f806c7a9d14e25815fec3"},"schema_version":"1.0"},"canonical_sha256":"c6f889bdec516c8ff6f9a439509219c45ab3bd3846cdfdc40399af87b20d5983","source":{"kind":"arxiv","id":"1106.4841","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4841","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4841v1","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4841","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"pith_short_12","alias_value":"Y34ITPPMKFWI","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y34ITPPMKFWI75XZ","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y34ITPPM","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:Y34ITPPMKFWI75XZUQ4VBEQZYR","target":"record","payload":{"canonical_record":{"source":{"id":"1106.4841","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-06-23T21:46:52Z","cross_cats_sorted":[],"title_canon_sha256":"1698325ce557466baba0c2a583784e90f5036625045d84ae44509e25a1300064","abstract_canon_sha256":"b34ffd8ab3c8103924ed318599d7388c08afa0bd220f806c7a9d14e25815fec3"},"schema_version":"1.0"},"canonical_sha256":"c6f889bdec516c8ff6f9a439509219c45ab3bd3846cdfdc40399af87b20d5983","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:31.328521Z","signature_b64":"sp+Xr1lp5AHuzD35d0MYW7y7B47lqW8qQgblS3Tk87scNffokmvKQpkISIMePuUOZLUFQmlnzOVvTrEpgA0zBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c6f889bdec516c8ff6f9a439509219c45ab3bd3846cdfdc40399af87b20d5983","last_reissued_at":"2026-05-18T02:01:31.328098Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:31.328098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.4841","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:01:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ETNpS4vtmZwGAvegaZC2djbz8gQe5oEwxo+llW5QQ7hDkwiZePV9JSxAu9GDXAmw2nsKYC1jM01Y0F6rgZAeBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:39:54.663206Z"},"content_sha256":"2d49445bdeec8a71f8b6d16b56cb786854b6d7971c4dbe13ae810633751960c2","schema_version":"1.0","event_id":"sha256:2d49445bdeec8a71f8b6d16b56cb786854b6d7971c4dbe13ae810633751960c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:Y34ITPPMKFWI75XZUQ4VBEQZYR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Binary Black Hole Waveform Extraction at Null Infinity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"J. Winicour, M. C. Babiuc, Y. Zlochower","submitted_at":"2011-06-23T21:46:52Z","abstract_excerpt":"In this work, we present a work in progress towards an efficient and economical computational module which interfaces between Cauchy and characteristic evolution codes. Our goal is to provide a standardized waveform extraction tool for the numerical relativity community which will allow CCE to be readily applied to a generic Cauchy code. The tool provides a means of unambiguous comparison between the waveforms generated by evolution codes based upon different formulations of the Einstein equations and different numerical approximation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4841","kind":"arxiv","version":1},"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":"2026-05-18T02:01:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vwW+uEXpUsaUOSCTOyJxQuRWCLFOniwfLYSy6bB7cRGED3lwwBHUn9ESYUC/j0WJLbh9VtAeoJP/ozBJuGSJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:39:54.663574Z"},"content_sha256":"29860b495a85e0e7744a2a5447fbe43e5a4e493bc7857efb7bee33f77f6868a0","schema_version":"1.0","event_id":"sha256:29860b495a85e0e7744a2a5447fbe43e5a4e493bc7857efb7bee33f77f6868a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y34ITPPMKFWI75XZUQ4VBEQZYR/bundle.json","state_url":"https://pith.science/pith/Y34ITPPMKFWI75XZUQ4VBEQZYR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y34ITPPMKFWI75XZUQ4VBEQZYR/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":"2026-06-01T11:39:54Z","links":{"resolver":"https://pith.science/pith/Y34ITPPMKFWI75XZUQ4VBEQZYR","bundle":"https://pith.science/pith/Y34ITPPMKFWI75XZUQ4VBEQZYR/bundle.json","state":"https://pith.science/pith/Y34ITPPMKFWI75XZUQ4VBEQZYR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y34ITPPMKFWI75XZUQ4VBEQZYR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:Y34ITPPMKFWI75XZUQ4VBEQZYR","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":"b34ffd8ab3c8103924ed318599d7388c08afa0bd220f806c7a9d14e25815fec3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-06-23T21:46:52Z","title_canon_sha256":"1698325ce557466baba0c2a583784e90f5036625045d84ae44509e25a1300064"},"schema_version":"1.0","source":{"id":"1106.4841","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4841","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4841v1","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4841","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"pith_short_12","alias_value":"Y34ITPPMKFWI","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y34ITPPMKFWI75XZ","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y34ITPPM","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:29860b495a85e0e7744a2a5447fbe43e5a4e493bc7857efb7bee33f77f6868a0","target":"graph","created_at":"2026-05-18T02:01:31Z","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":"In this work, we present a work in progress towards an efficient and economical computational module which interfaces between Cauchy and characteristic evolution codes. Our goal is to provide a standardized waveform extraction tool for the numerical relativity community which will allow CCE to be readily applied to a generic Cauchy code. The tool provides a means of unambiguous comparison between the waveforms generated by evolution codes based upon different formulations of the Einstein equations and different numerical approximation.","authors_text":"J. Winicour, M. C. Babiuc, Y. Zlochower","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-06-23T21:46:52Z","title":"Binary Black Hole Waveform Extraction at Null Infinity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4841","kind":"arxiv","version":1},"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":"sha256:2d49445bdeec8a71f8b6d16b56cb786854b6d7971c4dbe13ae810633751960c2","target":"record","created_at":"2026-05-18T02:01:31Z","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":"b34ffd8ab3c8103924ed318599d7388c08afa0bd220f806c7a9d14e25815fec3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-06-23T21:46:52Z","title_canon_sha256":"1698325ce557466baba0c2a583784e90f5036625045d84ae44509e25a1300064"},"schema_version":"1.0","source":{"id":"1106.4841","kind":"arxiv","version":1}},"canonical_sha256":"c6f889bdec516c8ff6f9a439509219c45ab3bd3846cdfdc40399af87b20d5983","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6f889bdec516c8ff6f9a439509219c45ab3bd3846cdfdc40399af87b20d5983","first_computed_at":"2026-05-18T02:01:31.328098Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:31.328098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sp+Xr1lp5AHuzD35d0MYW7y7B47lqW8qQgblS3Tk87scNffokmvKQpkISIMePuUOZLUFQmlnzOVvTrEpgA0zBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:31.328521Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.4841","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d49445bdeec8a71f8b6d16b56cb786854b6d7971c4dbe13ae810633751960c2","sha256:29860b495a85e0e7744a2a5447fbe43e5a4e493bc7857efb7bee33f77f6868a0"],"state_sha256":"05805c39b679bc5f32b16910831ff8015ab8b0279d87970b4bb40ecfcb16f5d2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qnVLS8LZ6zMgpmCIW0rdcE1lgGfat8Ge070it8cd0QElX4E1mvk0ExDvlpmzTDCp9M4SQgaoxxNgcUw5wymBBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T11:39:54.667420Z","bundle_sha256":"9a7cd5719917fcbd7592f7da33bd98ecb5c8fb67295abcbcaa6aa9fd9c16ebe8"}}