{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JL6W4Z6QIFRXWPZ3KEWW5ASDTJ","short_pith_number":"pith:JL6W4Z6Q","canonical_record":{"source":{"id":"1503.07476","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-03-25T17:54:58Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"f4e8bbd8d56ebf864f93f77f860db83ce29baea022ea4a3953902c8e1be26d65","abstract_canon_sha256":"61ef1f2fc95f688d53ba43b39570ccee128797176deb123d07d9789f50182030"},"schema_version":"1.0"},"canonical_sha256":"4afd6e67d041637b3f3b512d6e82439a46e412f0424e43aeaed9fd8dde58e55f","source":{"kind":"arxiv","id":"1503.07476","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07476","created_at":"2026-05-18T01:34:50Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07476v1","created_at":"2026-05-18T01:34:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07476","created_at":"2026-05-18T01:34:50Z"},{"alias_kind":"pith_short_12","alias_value":"JL6W4Z6QIFRX","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JL6W4Z6QIFRXWPZ3","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JL6W4Z6Q","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JL6W4Z6QIFRXWPZ3KEWW5ASDTJ","target":"record","payload":{"canonical_record":{"source":{"id":"1503.07476","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-03-25T17:54:58Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"f4e8bbd8d56ebf864f93f77f860db83ce29baea022ea4a3953902c8e1be26d65","abstract_canon_sha256":"61ef1f2fc95f688d53ba43b39570ccee128797176deb123d07d9789f50182030"},"schema_version":"1.0"},"canonical_sha256":"4afd6e67d041637b3f3b512d6e82439a46e412f0424e43aeaed9fd8dde58e55f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:34:50.223933Z","signature_b64":"IMFETTTa3GWmonCpGPDfJkvB25xpmvLowXC2sZsktXo4oWLreQM0OFaqMW8HCNNEcZYvteL///KuiEfE8ms2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4afd6e67d041637b3f3b512d6e82439a46e412f0424e43aeaed9fd8dde58e55f","last_reissued_at":"2026-05-18T01:34:50.223393Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:34:50.223393Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.07476","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":"2026-05-18T01:34:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qERv2EQtRStSblHzX/g5NcemnpmN1VA2D/Ax/bN3+5bZUH/ZvyVKaUmu1rz2PDIuIHAgsDROKN0XkWV5MzbZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:00:16.314958Z"},"content_sha256":"1f4d8cb2b9cf8aae807a3d45fec69a0871c6dea53cd35e055aaf5e26c6181a66","schema_version":"1.0","event_id":"sha256:1f4d8cb2b9cf8aae807a3d45fec69a0871c6dea53cd35e055aaf5e26c6181a66"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JL6W4Z6QIFRXWPZ3KEWW5ASDTJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Regression of Environmental Noise in LIGO Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"gr-qc","authors_text":"Francesco Salemi, Gabriele Vedovato, Giovanni Prodi, Guenakh Mitselmakher, Igor Yakushin, Marco Drago, Sergey Klimenko, Vaibhav Tiwari, Valentin Necula, Valery Frolov, Virginia Re","submitted_at":"2015-03-25T17:54:58Z","abstract_excerpt":"We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promising regression method is based on the construction of Wiener-Kolmogorov filters. Using this method, the seismic noise cancellation from the LIGO GW channel has already been performed. In the presented approach the Wiener-Kolmogorov method has been extended, incorporating banks of W"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07476","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":"2026-05-18T01:34:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/XNHiVdfGdAQqVF7ZdEb+3gZJONIAWLNtut0AKfxOsSzSHN+lJzIi2cS7noSz8YCA5DWJjM0VOUgMYb/wOHBBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:00:16.315304Z"},"content_sha256":"0470db2cd67e2382e90a0673b07759e8e36f15fddd28428f9e41dd8f4632677b","schema_version":"1.0","event_id":"sha256:0470db2cd67e2382e90a0673b07759e8e36f15fddd28428f9e41dd8f4632677b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JL6W4Z6QIFRXWPZ3KEWW5ASDTJ/bundle.json","state_url":"https://pith.science/pith/JL6W4Z6QIFRXWPZ3KEWW5ASDTJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JL6W4Z6QIFRXWPZ3KEWW5ASDTJ/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":"2026-05-26T02:00:16Z","links":{"resolver":"https://pith.science/pith/JL6W4Z6QIFRXWPZ3KEWW5ASDTJ","bundle":"https://pith.science/pith/JL6W4Z6QIFRXWPZ3KEWW5ASDTJ/bundle.json","state":"https://pith.science/pith/JL6W4Z6QIFRXWPZ3KEWW5ASDTJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JL6W4Z6QIFRXWPZ3KEWW5ASDTJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JL6W4Z6QIFRXWPZ3KEWW5ASDTJ","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":"61ef1f2fc95f688d53ba43b39570ccee128797176deb123d07d9789f50182030","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-03-25T17:54:58Z","title_canon_sha256":"f4e8bbd8d56ebf864f93f77f860db83ce29baea022ea4a3953902c8e1be26d65"},"schema_version":"1.0","source":{"id":"1503.07476","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07476","created_at":"2026-05-18T01:34:50Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07476v1","created_at":"2026-05-18T01:34:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07476","created_at":"2026-05-18T01:34:50Z"},{"alias_kind":"pith_short_12","alias_value":"JL6W4Z6QIFRX","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JL6W4Z6QIFRXWPZ3","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JL6W4Z6Q","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:0470db2cd67e2382e90a0673b07759e8e36f15fddd28428f9e41dd8f4632677b","target":"graph","created_at":"2026-05-18T01:34:50Z","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":"We address the problem of noise regression in the output of gravitational-wave (GW) interferometers, using data from the physical environmental monitors (PEM). The objective of the regression analysis is to predict environmental noise in the gravitational-wave channel from the PEM measurements. One of the most promising regression method is based on the construction of Wiener-Kolmogorov filters. Using this method, the seismic noise cancellation from the LIGO GW channel has already been performed. In the presented approach the Wiener-Kolmogorov method has been extended, incorporating banks of W","authors_text":"Francesco Salemi, Gabriele Vedovato, Giovanni Prodi, Guenakh Mitselmakher, Igor Yakushin, Marco Drago, Sergey Klimenko, Vaibhav Tiwari, Valentin Necula, Valery Frolov, Virginia Re","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-03-25T17:54:58Z","title":"Regression of Environmental Noise in LIGO Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07476","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":"sha256:1f4d8cb2b9cf8aae807a3d45fec69a0871c6dea53cd35e055aaf5e26c6181a66","target":"record","created_at":"2026-05-18T01:34:50Z","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":"61ef1f2fc95f688d53ba43b39570ccee128797176deb123d07d9789f50182030","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-03-25T17:54:58Z","title_canon_sha256":"f4e8bbd8d56ebf864f93f77f860db83ce29baea022ea4a3953902c8e1be26d65"},"schema_version":"1.0","source":{"id":"1503.07476","kind":"arxiv","version":1}},"canonical_sha256":"4afd6e67d041637b3f3b512d6e82439a46e412f0424e43aeaed9fd8dde58e55f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4afd6e67d041637b3f3b512d6e82439a46e412f0424e43aeaed9fd8dde58e55f","first_computed_at":"2026-05-18T01:34:50.223393Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:34:50.223393Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IMFETTTa3GWmonCpGPDfJkvB25xpmvLowXC2sZsktXo4oWLreQM0OFaqMW8HCNNEcZYvteL///KuiEfE8ms2CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:34:50.223933Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.07476","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f4d8cb2b9cf8aae807a3d45fec69a0871c6dea53cd35e055aaf5e26c6181a66","sha256:0470db2cd67e2382e90a0673b07759e8e36f15fddd28428f9e41dd8f4632677b"],"state_sha256":"d38a9936a34a18ba4a0ac89916ec343d444d8343b3ca4ae11ab9458695f0231f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t5cYD0vThjEiRA4BXqkaBhqaHeXiP7w0QajA8DX1CDRvIBpEGg/196ZPH5kI50v6XCQqgU96kIEe5GDt+cuMBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T02:00:16.317540Z","bundle_sha256":"3d441a7150699ed356d41c5a1b3ebc9e1ec4297af950e1966b5e721dcd75630e"}}