{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:ZTT4LSTGMEGUST2KKI6IS7U2JK","short_pith_number":"pith:ZTT4LSTG","canonical_record":{"source":{"id":"gr-qc/9812014","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"1998-12-04T03:25:11Z","cross_cats_sorted":[],"title_canon_sha256":"f5286ad7795e344d63ff79b9764aeb3d838778b2b04aa3069c293187930ed026","abstract_canon_sha256":"20e11e776c0befde00b29ff04ab10a2e92731e39d1e376e52da90ee28b9d2386"},"schema_version":"1.0"},"canonical_sha256":"cce7c5ca66610d494f4a523c897e9a4aaa018cfb0622f3710c1fe3f742bcf5bd","source":{"kind":"arxiv","id":"gr-qc/9812014","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/9812014","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/9812014v1","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/9812014","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"pith_short_12","alias_value":"ZTT4LSTGMEGU","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"pith_short_16","alias_value":"ZTT4LSTGMEGUST2K","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"pith_short_8","alias_value":"ZTT4LSTG","created_at":"2026-07-04T16:08:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:ZTT4LSTGMEGUST2KKI6IS7U2JK","target":"record","payload":{"canonical_record":{"source":{"id":"gr-qc/9812014","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"1998-12-04T03:25:11Z","cross_cats_sorted":[],"title_canon_sha256":"f5286ad7795e344d63ff79b9764aeb3d838778b2b04aa3069c293187930ed026","abstract_canon_sha256":"20e11e776c0befde00b29ff04ab10a2e92731e39d1e376e52da90ee28b9d2386"},"schema_version":"1.0"},"canonical_sha256":"cce7c5ca66610d494f4a523c897e9a4aaa018cfb0622f3710c1fe3f742bcf5bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:08:53.715646Z","signature_b64":"VkC2P8WUzhU2exRM7C7/E8KSNAOni22Jy/OuUAMqxBZFh8R4nQzjWWh182WDvEJ50i8BpeqhSxH3LDTsAjoqAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cce7c5ca66610d494f4a523c897e9a4aaa018cfb0622f3710c1fe3f742bcf5bd","last_reissued_at":"2026-07-04T16:08:53.715155Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:08:53.715155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"gr-qc/9812014","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":"2026-07-04T16:08:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1KZ+zvaoOQCHe4f/PyEVKcVjcBSGM3gcOsSCzi4d9GVJwKeDW8+I80cEDmguSjIPQj5goJffiQDlhVRo2/pVDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T03:43:17.002543Z"},"content_sha256":"450b1e39ee3991ac305f2e65b39e7b418980581a4dcc3529b9b2c5a16be3e8fe","schema_version":"1.0","event_id":"sha256:450b1e39ee3991ac305f2e65b39e7b418980581a4dcc3529b9b2c5a16be3e8fe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:ZTT4LSTGMEGUST2KKI6IS7U2JK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searching for periodic sources with LIGO. II: Hierarchical searches","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Patrick R Brady, Teviet Creighton","submitted_at":"1998-12-04T03:25:11Z","abstract_excerpt":"The detection of quasi-periodic sources of gravitational waves requires the accumulation of signal-to-noise over long observation times. If not removed, Earth-motion induced Doppler modulations, and intrinsic variations of the gravitational-wave frequency make the signals impossible to detect. These effects can be corrected (removed) using a parameterized model for the frequency evolution. We compute the number of independent corrections $N_p(\\Delta T,N)$ required for incoherent search strategies which use stacked power spectra---a demodulated time series is divided into $N$ segments of length"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/9812014","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/gr-qc/9812014/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":"2026-07-04T16:08:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k1wXpDap3EHuupITt9tHpzUyJ+fPoxL0OC2+RCD9FJmYBK9vuXQlrPfe/z+VLnAtGLWg4VH1mKhSd5BAP7AiAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T03:43:17.005027Z"},"content_sha256":"ff04abf2aadb195e0f26014708ec384ad4b866a5420797853b667c3098d32c74","schema_version":"1.0","event_id":"sha256:ff04abf2aadb195e0f26014708ec384ad4b866a5420797853b667c3098d32c74"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZTT4LSTGMEGUST2KKI6IS7U2JK/bundle.json","state_url":"https://pith.science/pith/ZTT4LSTGMEGUST2KKI6IS7U2JK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZTT4LSTGMEGUST2KKI6IS7U2JK/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":"2026-08-13T03:43:17Z","links":{"resolver":"https://pith.science/pith/ZTT4LSTGMEGUST2KKI6IS7U2JK","bundle":"https://pith.science/pith/ZTT4LSTGMEGUST2KKI6IS7U2JK/bundle.json","state":"https://pith.science/pith/ZTT4LSTGMEGUST2KKI6IS7U2JK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZTT4LSTGMEGUST2KKI6IS7U2JK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:ZTT4LSTGMEGUST2KKI6IS7U2JK","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":"20e11e776c0befde00b29ff04ab10a2e92731e39d1e376e52da90ee28b9d2386","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"1998-12-04T03:25:11Z","title_canon_sha256":"f5286ad7795e344d63ff79b9764aeb3d838778b2b04aa3069c293187930ed026"},"schema_version":"1.0","source":{"id":"gr-qc/9812014","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/9812014","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/9812014v1","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/9812014","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"pith_short_12","alias_value":"ZTT4LSTGMEGU","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"pith_short_16","alias_value":"ZTT4LSTGMEGUST2K","created_at":"2026-07-04T16:08:53Z"},{"alias_kind":"pith_short_8","alias_value":"ZTT4LSTG","created_at":"2026-07-04T16:08:53Z"}],"graph_snapshots":[{"event_id":"sha256:ff04abf2aadb195e0f26014708ec384ad4b866a5420797853b667c3098d32c74","target":"graph","created_at":"2026-07-04T16:08:53Z","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/gr-qc/9812014/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The detection of quasi-periodic sources of gravitational waves requires the accumulation of signal-to-noise over long observation times. If not removed, Earth-motion induced Doppler modulations, and intrinsic variations of the gravitational-wave frequency make the signals impossible to detect. These effects can be corrected (removed) using a parameterized model for the frequency evolution. We compute the number of independent corrections $N_p(\\Delta T,N)$ required for incoherent search strategies which use stacked power spectra---a demodulated time series is divided into $N$ segments of length","authors_text":"Patrick R Brady, Teviet Creighton","cross_cats":[],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"1998-12-04T03:25:11Z","title":"Searching for periodic sources with LIGO. II: Hierarchical searches"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/9812014","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":"sha256:450b1e39ee3991ac305f2e65b39e7b418980581a4dcc3529b9b2c5a16be3e8fe","target":"record","created_at":"2026-07-04T16:08:53Z","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":"20e11e776c0befde00b29ff04ab10a2e92731e39d1e376e52da90ee28b9d2386","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"1998-12-04T03:25:11Z","title_canon_sha256":"f5286ad7795e344d63ff79b9764aeb3d838778b2b04aa3069c293187930ed026"},"schema_version":"1.0","source":{"id":"gr-qc/9812014","kind":"arxiv","version":1}},"canonical_sha256":"cce7c5ca66610d494f4a523c897e9a4aaa018cfb0622f3710c1fe3f742bcf5bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cce7c5ca66610d494f4a523c897e9a4aaa018cfb0622f3710c1fe3f742bcf5bd","first_computed_at":"2026-07-04T16:08:53.715155Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:08:53.715155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VkC2P8WUzhU2exRM7C7/E8KSNAOni22Jy/OuUAMqxBZFh8R4nQzjWWh182WDvEJ50i8BpeqhSxH3LDTsAjoqAA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:08:53.715646Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/9812014","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:450b1e39ee3991ac305f2e65b39e7b418980581a4dcc3529b9b2c5a16be3e8fe","sha256:ff04abf2aadb195e0f26014708ec384ad4b866a5420797853b667c3098d32c74"],"state_sha256":"c1bcb921b1b6a8a8347479c26d9a8fcb527024f24c0e4db264247398e9a64e8a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"77haJQ3Mmrcn89bqG0bLy2FC2uItGjoLWo1U0fEnm3VymKMuOyqa3AT9uyA1oPf+U4Htt8SbMsGVZOosHvkUAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T03:43:17.014395Z","bundle_sha256":"996f679f4de8b5a77df93bdface2d26bee121baed7592ece23f9b6fac6eb3078"}}