{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:5FEG6QNW6S5ZXOIAHQYIF2UN7L","short_pith_number":"pith:5FEG6QNW","canonical_record":{"source":{"id":"0711.3041","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2007-11-19T23:15:31Z","cross_cats_sorted":[],"title_canon_sha256":"2c83658db50b7a4964b74d4586bcbc463aff7713d20a9571758d409bccb68518","abstract_canon_sha256":"919b6cbb04d5de894a4260643e0466df26eaa8833bad7715c58e4326a758d22b"},"schema_version":"1.0"},"canonical_sha256":"e9486f41b6f4bb9bb9003c3082ea8dfac8d152d9fde9a5660df75b0c1c0696b6","source":{"kind":"arxiv","id":"0711.3041","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.3041","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"arxiv_version","alias_value":"0711.3041v2","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.3041","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"pith_short_12","alias_value":"5FEG6QNW6S5Z","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"pith_short_16","alias_value":"5FEG6QNW6S5ZXOIA","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"pith_short_8","alias_value":"5FEG6QNW","created_at":"2026-07-04T15:51:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:5FEG6QNW6S5ZXOIAHQYIF2UN7L","target":"record","payload":{"canonical_record":{"source":{"id":"0711.3041","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2007-11-19T23:15:31Z","cross_cats_sorted":[],"title_canon_sha256":"2c83658db50b7a4964b74d4586bcbc463aff7713d20a9571758d409bccb68518","abstract_canon_sha256":"919b6cbb04d5de894a4260643e0466df26eaa8833bad7715c58e4326a758d22b"},"schema_version":"1.0"},"canonical_sha256":"e9486f41b6f4bb9bb9003c3082ea8dfac8d152d9fde9a5660df75b0c1c0696b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:51:57.690586Z","signature_b64":"S2Z5GgxcxY/T1oxXPhN9Puwetu1nEL6jjiC8cyoWA2xOsLf1eJH+8iHCwRYaL9pAqCdIRJXhtFLdkfHw8ieBBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9486f41b6f4bb9bb9003c3082ea8dfac8d152d9fde9a5660df75b0c1c0696b6","last_reissued_at":"2026-07-04T15:51:57.690152Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:51:57.690152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0711.3041","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:51:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xGpKGc2HS0fkZusQTn7NR6btd6vYYwNFW4KmrO2MN5EZnly5zMdqPvgm3Zw4RR+gZgDqwuH1uvMASkPOnWpNDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T03:21:14.875988Z"},"content_sha256":"28da7cb8934bd8f5e6eff00dddf202638a2038acde781f29fa3a8c6373d013d4","schema_version":"1.0","event_id":"sha256:28da7cb8934bd8f5e6eff00dddf202638a2038acde781f29fa3a8c6373d013d4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:5FEG6QNW6S5ZXOIAHQYIF2UN7L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"LIGO: The Laser Interferometer Gravitational-Wave Observatory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"et al, The LIGO Scientific Collaboration: B. Abbott","submitted_at":"2007-11-19T23:15:31Z","abstract_excerpt":"The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO) is to detect and study gravitational waves of astrophysical origin. Direct detection of gravitational waves holds the promise of testing general relativity in the strong-field regime, of providing a new probe of exotic objects such as black hole and neutron stars, and of uncovering unanticipated new astrophysics. LIGO, a joint Caltech-MIT project supported by the National Science Foundation, operates three multi-kilometer interferometers at two widely separated sites in the United States. These detectors are the result"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.3041","kind":"arxiv","version":2},"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/0711.3041/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":"2026-07-04T15:51:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"35p5Cw9gA1KTi1Y59kLCiZfCA+RCKO1DB7TMM1pMveSzi0asN8Mm2DStOf/ec/6BBjldlaBdFi9wQXktl0yDCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T03:21:14.876905Z"},"content_sha256":"1d0f42f15a63ef1d83c2e1cf3be4a4b421882601f7cf2f9968be3a15cc5824f7","schema_version":"1.0","event_id":"sha256:1d0f42f15a63ef1d83c2e1cf3be4a4b421882601f7cf2f9968be3a15cc5824f7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5FEG6QNW6S5ZXOIAHQYIF2UN7L/bundle.json","state_url":"https://pith.science/pith/5FEG6QNW6S5ZXOIAHQYIF2UN7L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5FEG6QNW6S5ZXOIAHQYIF2UN7L/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":"2026-08-18T03:21:14Z","links":{"resolver":"https://pith.science/pith/5FEG6QNW6S5ZXOIAHQYIF2UN7L","bundle":"https://pith.science/pith/5FEG6QNW6S5ZXOIAHQYIF2UN7L/bundle.json","state":"https://pith.science/pith/5FEG6QNW6S5ZXOIAHQYIF2UN7L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5FEG6QNW6S5ZXOIAHQYIF2UN7L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:5FEG6QNW6S5ZXOIAHQYIF2UN7L","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":"919b6cbb04d5de894a4260643e0466df26eaa8833bad7715c58e4326a758d22b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2007-11-19T23:15:31Z","title_canon_sha256":"2c83658db50b7a4964b74d4586bcbc463aff7713d20a9571758d409bccb68518"},"schema_version":"1.0","source":{"id":"0711.3041","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0711.3041","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"arxiv_version","alias_value":"0711.3041v2","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0711.3041","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"pith_short_12","alias_value":"5FEG6QNW6S5Z","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"pith_short_16","alias_value":"5FEG6QNW6S5ZXOIA","created_at":"2026-07-04T15:51:57Z"},{"alias_kind":"pith_short_8","alias_value":"5FEG6QNW","created_at":"2026-07-04T15:51:57Z"}],"graph_snapshots":[{"event_id":"sha256:1d0f42f15a63ef1d83c2e1cf3be4a4b421882601f7cf2f9968be3a15cc5824f7","target":"graph","created_at":"2026-07-04T15:51:57Z","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/0711.3041/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The goal of the Laser Interferometric Gravitational-Wave Observatory (LIGO) is to detect and study gravitational waves of astrophysical origin. Direct detection of gravitational waves holds the promise of testing general relativity in the strong-field regime, of providing a new probe of exotic objects such as black hole and neutron stars, and of uncovering unanticipated new astrophysics. LIGO, a joint Caltech-MIT project supported by the National Science Foundation, operates three multi-kilometer interferometers at two widely separated sites in the United States. These detectors are the result","authors_text":"et al, The LIGO Scientific Collaboration: B. Abbott","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2007-11-19T23:15:31Z","title":"LIGO: The Laser Interferometer Gravitational-Wave Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0711.3041","kind":"arxiv","version":2},"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":"sha256:28da7cb8934bd8f5e6eff00dddf202638a2038acde781f29fa3a8c6373d013d4","target":"record","created_at":"2026-07-04T15:51:57Z","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":"919b6cbb04d5de894a4260643e0466df26eaa8833bad7715c58e4326a758d22b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2007-11-19T23:15:31Z","title_canon_sha256":"2c83658db50b7a4964b74d4586bcbc463aff7713d20a9571758d409bccb68518"},"schema_version":"1.0","source":{"id":"0711.3041","kind":"arxiv","version":2}},"canonical_sha256":"e9486f41b6f4bb9bb9003c3082ea8dfac8d152d9fde9a5660df75b0c1c0696b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9486f41b6f4bb9bb9003c3082ea8dfac8d152d9fde9a5660df75b0c1c0696b6","first_computed_at":"2026-07-04T15:51:57.690152Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:51:57.690152Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S2Z5GgxcxY/T1oxXPhN9Puwetu1nEL6jjiC8cyoWA2xOsLf1eJH+8iHCwRYaL9pAqCdIRJXhtFLdkfHw8ieBBA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:51:57.690586Z","signed_message":"canonical_sha256_bytes"},"source_id":"0711.3041","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28da7cb8934bd8f5e6eff00dddf202638a2038acde781f29fa3a8c6373d013d4","sha256:1d0f42f15a63ef1d83c2e1cf3be4a4b421882601f7cf2f9968be3a15cc5824f7"],"state_sha256":"6fb37f60b86c0f3d394f2034d1eeb6dbf7ba046350cb34a5abd2d1e900aeaff0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oEr7RyLW5Q0lYzxiB/yXeijjd4VZtAVZDjxhuu7uiVM01UEmHnJJeYbzHaeH0Oua6Xg5H3f3wnogadlHr2beCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T03:21:14.884451Z","bundle_sha256":"8d90cb292d1a544053db6ad47bbaf99171abff1f54ff7a8d0612f52f6f6aee78"}}