{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:S6GMR4636OBAIESPS2BXMB2ITG","short_pith_number":"pith:S6GMR463","canonical_record":{"source":{"id":"2509.06745","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-09-08T14:37:23Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"9ce8786e2c4040cd8095ef2faece6f82cc4f81a60ab53e46ced599b061502287","abstract_canon_sha256":"0bdb6720b73164a058a91da142273085191d244c3feb14caea35178ebe89ba6f"},"schema_version":"1.0"},"canonical_sha256":"978cc8f3dbf38204124f96837607489987fe40db4116223a7dd432ceb8cb1032","source":{"kind":"arxiv","id":"2509.06745","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.06745","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"arxiv_version","alias_value":"2509.06745v1","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.06745","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"pith_short_12","alias_value":"S6GMR4636OBA","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"pith_short_16","alias_value":"S6GMR4636OBAIESP","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"pith_short_8","alias_value":"S6GMR463","created_at":"2026-07-05T12:06:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:S6GMR4636OBAIESPS2BXMB2ITG","target":"record","payload":{"canonical_record":{"source":{"id":"2509.06745","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-09-08T14:37:23Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"9ce8786e2c4040cd8095ef2faece6f82cc4f81a60ab53e46ced599b061502287","abstract_canon_sha256":"0bdb6720b73164a058a91da142273085191d244c3feb14caea35178ebe89ba6f"},"schema_version":"1.0"},"canonical_sha256":"978cc8f3dbf38204124f96837607489987fe40db4116223a7dd432ceb8cb1032","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:06:51.942105Z","signature_b64":"RxdwDumAppKmJrMJpVtne1sjCMDDYZw/ms0scMi1gFh/ytLXD2shiYHoBUEncfM6oFvpi6WFxrs2KTdI/NSDAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"978cc8f3dbf38204124f96837607489987fe40db4116223a7dd432ceb8cb1032","last_reissued_at":"2026-07-05T12:06:51.941696Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:06:51.941696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.06745","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":"2026-07-05T12:06:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gj5L7cykZ5hz8+0HHLWp5EvOVBqaQd84weOUB/gXtCpxUxkx+CXu2ofSvoRMSeWfYSlL39nP80SnMeH0O2hJAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T06:42:16.058263Z"},"content_sha256":"406a30372f1eb88c7a1bd68ba14027d08005698c7265923001f59f6bf67523a8","schema_version":"1.0","event_id":"sha256:406a30372f1eb88c7a1bd68ba14027d08005698c7265923001f59f6bf67523a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:S6GMR4636OBAIESPS2BXMB2ITG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Leveraging the null stream to detect strongly lensed gravitational waves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Jef Heynen, Justin Janquart, Soumen Roy","submitted_at":"2025-09-08T14:37:23Z","abstract_excerpt":"Gravitational lensing of gravitational waves is expected to be observed in current and future detectors. In view of the growing number of detections, computationally light pipelines are needed. Detection pipelines used in past LIGO-Virgo-KAGRA searches for strong lensing require parameter estimation to be performed on the gravitational wave signal or are machine learning based. Removing the need for parameter estimation in classical methods would alleviate the ever growing demand of computational resources in strong lensing searches and would make real-time analysis possible. We present a nove"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.06745","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2509.06745/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":"2026-07-05T12:06:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nLzDq+9rf/tOD6BIxiu14rvmqqGg0jq0M8k2NOYMEvjqjIhuBjXrbzBD2P3nhEAWEhAiBvXlWrQQ7wd+BqCMAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T06:42:16.058682Z"},"content_sha256":"c263c9ffe0b3628bf00ea514b33cebcaf843fa5a9640781e849f34fadb21e98f","schema_version":"1.0","event_id":"sha256:c263c9ffe0b3628bf00ea514b33cebcaf843fa5a9640781e849f34fadb21e98f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S6GMR4636OBAIESPS2BXMB2ITG/bundle.json","state_url":"https://pith.science/pith/S6GMR4636OBAIESPS2BXMB2ITG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S6GMR4636OBAIESPS2BXMB2ITG/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":"2026-07-11T06:42:16Z","links":{"resolver":"https://pith.science/pith/S6GMR4636OBAIESPS2BXMB2ITG","bundle":"https://pith.science/pith/S6GMR4636OBAIESPS2BXMB2ITG/bundle.json","state":"https://pith.science/pith/S6GMR4636OBAIESPS2BXMB2ITG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S6GMR4636OBAIESPS2BXMB2ITG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:S6GMR4636OBAIESPS2BXMB2ITG","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":"0bdb6720b73164a058a91da142273085191d244c3feb14caea35178ebe89ba6f","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-09-08T14:37:23Z","title_canon_sha256":"9ce8786e2c4040cd8095ef2faece6f82cc4f81a60ab53e46ced599b061502287"},"schema_version":"1.0","source":{"id":"2509.06745","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.06745","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"arxiv_version","alias_value":"2509.06745v1","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.06745","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"pith_short_12","alias_value":"S6GMR4636OBA","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"pith_short_16","alias_value":"S6GMR4636OBAIESP","created_at":"2026-07-05T12:06:51Z"},{"alias_kind":"pith_short_8","alias_value":"S6GMR463","created_at":"2026-07-05T12:06:51Z"}],"graph_snapshots":[{"event_id":"sha256:c263c9ffe0b3628bf00ea514b33cebcaf843fa5a9640781e849f34fadb21e98f","target":"graph","created_at":"2026-07-05T12:06:51Z","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/2509.06745/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gravitational lensing of gravitational waves is expected to be observed in current and future detectors. In view of the growing number of detections, computationally light pipelines are needed. Detection pipelines used in past LIGO-Virgo-KAGRA searches for strong lensing require parameter estimation to be performed on the gravitational wave signal or are machine learning based. Removing the need for parameter estimation in classical methods would alleviate the ever growing demand of computational resources in strong lensing searches and would make real-time analysis possible. We present a nove","authors_text":"Jef Heynen, Justin Janquart, Soumen Roy","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-09-08T14:37:23Z","title":"Leveraging the null stream to detect strongly lensed gravitational waves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.06745","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":"sha256:406a30372f1eb88c7a1bd68ba14027d08005698c7265923001f59f6bf67523a8","target":"record","created_at":"2026-07-05T12:06:51Z","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":"0bdb6720b73164a058a91da142273085191d244c3feb14caea35178ebe89ba6f","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2025-09-08T14:37:23Z","title_canon_sha256":"9ce8786e2c4040cd8095ef2faece6f82cc4f81a60ab53e46ced599b061502287"},"schema_version":"1.0","source":{"id":"2509.06745","kind":"arxiv","version":1}},"canonical_sha256":"978cc8f3dbf38204124f96837607489987fe40db4116223a7dd432ceb8cb1032","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"978cc8f3dbf38204124f96837607489987fe40db4116223a7dd432ceb8cb1032","first_computed_at":"2026-07-05T12:06:51.941696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:06:51.941696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RxdwDumAppKmJrMJpVtne1sjCMDDYZw/ms0scMi1gFh/ytLXD2shiYHoBUEncfM6oFvpi6WFxrs2KTdI/NSDAg==","signature_status":"signed_v1","signed_at":"2026-07-05T12:06:51.942105Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.06745","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:406a30372f1eb88c7a1bd68ba14027d08005698c7265923001f59f6bf67523a8","sha256:c263c9ffe0b3628bf00ea514b33cebcaf843fa5a9640781e849f34fadb21e98f"],"state_sha256":"05c967df9d23c65d54c506fdb126cb6c3ea0bdd9be7742e7e3cb08660232eee5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"irXKlcSKASlh76P8ydiRozAzQuK3g9IxCvgsmo2r5L9Omj/jjALB10C4wEJ7LUiv8rnX3XyD68tR7W6HOudOCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-11T06:42:16.062916Z","bundle_sha256":"7b840323beba762a2b595eaf5bd721ea6cf8e8b9d2bf18437528d0017b546aba"}}