{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:PZGNALNRHDSRZNIPUPXVZKKZN7","short_pith_number":"pith:PZGNALNR","canonical_record":{"source":{"id":"astro-ph/9507030","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-10T13:28:05Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"3493d4ff533c91a2315f34c818c7e890f4891bdda9f381b7f04563e933867b37","abstract_canon_sha256":"120d709c13706597b200e8ff97e741b685605f128844c8dbda4487a3f844ebad"},"schema_version":"1.0"},"canonical_sha256":"7e4cd02db138e51cb50fa3ef5ca9596fc5891106b0673b9dde23dccc1076ba26","source":{"kind":"arxiv","id":"astro-ph/9507030","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9507030","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9507030v1","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9507030","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"PZGNALNRHDSR","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"pith_short_16","alias_value":"PZGNALNRHDSRZNIP","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"pith_short_8","alias_value":"PZGNALNR","created_at":"2026-07-04T15:58:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:PZGNALNRHDSRZNIPUPXVZKKZN7","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9507030","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-10T13:28:05Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"3493d4ff533c91a2315f34c818c7e890f4891bdda9f381b7f04563e933867b37","abstract_canon_sha256":"120d709c13706597b200e8ff97e741b685605f128844c8dbda4487a3f844ebad"},"schema_version":"1.0"},"canonical_sha256":"7e4cd02db138e51cb50fa3ef5ca9596fc5891106b0673b9dde23dccc1076ba26","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:58:04.143643Z","signature_b64":"g+N2B9YMMoglcxY47tyF401Tn17i/rHdzT1b2I0cyuPRUMbeONlLnw+o/n0wREFg0AnbMdu4JYGu1LWY0hlGCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e4cd02db138e51cb50fa3ef5ca9596fc5891106b0673b9dde23dccc1076ba26","last_reissued_at":"2026-07-04T15:58:04.143264Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:58:04.143264Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9507030","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":"2026-07-04T15:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eX61xLYJiE4yuYH2bOv7Q4mur5MPkE2lfPxKa3mCTcGSIyRVnBeDO9TTg/uRa07mxOly9HVErLlCpDOx0FvTAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:03:33.621939Z"},"content_sha256":"0301924aa7f94a2087b7f793b12e7038097ef1b6502e2597e0677d22dbffc246","schema_version":"1.0","event_id":"sha256:0301924aa7f94a2087b7f793b12e7038097ef1b6502e2597e0677d22dbffc246"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:PZGNALNRHDSRZNIPUPXVZKKZN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gravitational Radiation and Very Long Baseline Interferometry","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph","authors_text":"Carl R. Gwinn, Demetrios N. Matsakis, Mark Birkinshaw, Ted Pyne, T. Marshall Eubanks","submitted_at":"1995-07-10T13:28:05Z","abstract_excerpt":"Gravitational waves affect the observed direction of light from distant sources. At telescopes, this change in direction appears as periodic variations in the apparent positions of these sources on the sky; that is, as proper motion. A wave of a given phase, traveling in a given direction, produces a characteristic pattern of proper motions over the sky. Comparison of observed proper motions with this pattern serves to test for the presence of gravitational waves. A stochastic background of waves induces apparent proper motions with specific statistical properties, and so, may also be sought. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9507030","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/astro-ph/9507030/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":"2026-07-04T15:58:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XmzgvF3xYQlG6W0BYVOqcVywSO0l/VwCZpJDwt46FELiNLe9yOW46yusvauQmcWu8+/rMfZ1iGOIxaFkSDBEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:03:33.622881Z"},"content_sha256":"dd3d2e421faac2dfa323aa8b6a4e836d38c60543359a269b19df03a40126206e","schema_version":"1.0","event_id":"sha256:dd3d2e421faac2dfa323aa8b6a4e836d38c60543359a269b19df03a40126206e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PZGNALNRHDSRZNIPUPXVZKKZN7/bundle.json","state_url":"https://pith.science/pith/PZGNALNRHDSRZNIPUPXVZKKZN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PZGNALNRHDSRZNIPUPXVZKKZN7/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":"2026-08-06T10:03:33Z","links":{"resolver":"https://pith.science/pith/PZGNALNRHDSRZNIPUPXVZKKZN7","bundle":"https://pith.science/pith/PZGNALNRHDSRZNIPUPXVZKKZN7/bundle.json","state":"https://pith.science/pith/PZGNALNRHDSRZNIPUPXVZKKZN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PZGNALNRHDSRZNIPUPXVZKKZN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:PZGNALNRHDSRZNIPUPXVZKKZN7","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":"120d709c13706597b200e8ff97e741b685605f128844c8dbda4487a3f844ebad","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-10T13:28:05Z","title_canon_sha256":"3493d4ff533c91a2315f34c818c7e890f4891bdda9f381b7f04563e933867b37"},"schema_version":"1.0","source":{"id":"astro-ph/9507030","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9507030","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9507030v1","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9507030","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"PZGNALNRHDSR","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"pith_short_16","alias_value":"PZGNALNRHDSRZNIP","created_at":"2026-07-04T15:58:04Z"},{"alias_kind":"pith_short_8","alias_value":"PZGNALNR","created_at":"2026-07-04T15:58:04Z"}],"graph_snapshots":[{"event_id":"sha256:dd3d2e421faac2dfa323aa8b6a4e836d38c60543359a269b19df03a40126206e","target":"graph","created_at":"2026-07-04T15:58:04Z","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/astro-ph/9507030/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gravitational waves affect the observed direction of light from distant sources. At telescopes, this change in direction appears as periodic variations in the apparent positions of these sources on the sky; that is, as proper motion. A wave of a given phase, traveling in a given direction, produces a characteristic pattern of proper motions over the sky. Comparison of observed proper motions with this pattern serves to test for the presence of gravitational waves. A stochastic background of waves induces apparent proper motions with specific statistical properties, and so, may also be sought. ","authors_text":"Carl R. Gwinn, Demetrios N. Matsakis, Mark Birkinshaw, Ted Pyne, T. Marshall Eubanks","cross_cats":["gr-qc"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1995-07-10T13:28:05Z","title":"Gravitational Radiation and Very Long Baseline Interferometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9507030","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":"sha256:0301924aa7f94a2087b7f793b12e7038097ef1b6502e2597e0677d22dbffc246","target":"record","created_at":"2026-07-04T15:58:04Z","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":"120d709c13706597b200e8ff97e741b685605f128844c8dbda4487a3f844ebad","cross_cats_sorted":["gr-qc"],"license":"","primary_cat":"astro-ph","submitted_at":"1995-07-10T13:28:05Z","title_canon_sha256":"3493d4ff533c91a2315f34c818c7e890f4891bdda9f381b7f04563e933867b37"},"schema_version":"1.0","source":{"id":"astro-ph/9507030","kind":"arxiv","version":1}},"canonical_sha256":"7e4cd02db138e51cb50fa3ef5ca9596fc5891106b0673b9dde23dccc1076ba26","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e4cd02db138e51cb50fa3ef5ca9596fc5891106b0673b9dde23dccc1076ba26","first_computed_at":"2026-07-04T15:58:04.143264Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:58:04.143264Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"g+N2B9YMMoglcxY47tyF401Tn17i/rHdzT1b2I0cyuPRUMbeONlLnw+o/n0wREFg0AnbMdu4JYGu1LWY0hlGCA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:58:04.143643Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9507030","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0301924aa7f94a2087b7f793b12e7038097ef1b6502e2597e0677d22dbffc246","sha256:dd3d2e421faac2dfa323aa8b6a4e836d38c60543359a269b19df03a40126206e"],"state_sha256":"7793d0d545fd33a9ca558c0f070a5f9b4cb3c31bd6196216306f7b7cdf624ed6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"28BuHsxNUjbDxPQ6MuTxrjzCnXRmppu3xlmylrdkflxHNxVD8yrectOil7V55xiUoV30tRBjR3dvdF7au8A4AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T10:03:33.628275Z","bundle_sha256":"c62aea9eae9dc7260e50f378ff8c1b3166926daa832867a2da6473ea25a633f2"}}