{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:GPNPP6JBVLCOCCJJY3W6HTHKZS","short_pith_number":"pith:GPNPP6JB","canonical_record":{"source":{"id":"1112.0308","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-12-01T20:55:39Z","cross_cats_sorted":[],"title_canon_sha256":"5be7ea2ab2c2786cc2b64152ddc2bbca2e6fc0a4b0ec0413614c9dc91dda6469","abstract_canon_sha256":"40051cd20a83141cd4de7bd245f06618710e94a6eb574ebff29216559a1328ec"},"schema_version":"1.0"},"canonical_sha256":"33daf7f921aac4e10929c6ede3cceacca79efe1e4227c099c45d6dabff82091c","source":{"kind":"arxiv","id":"1112.0308","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.0308","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"arxiv_version","alias_value":"1112.0308v2","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.0308","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"pith_short_12","alias_value":"GPNPP6JBVLCO","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GPNPP6JBVLCOCCJJ","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GPNPP6JB","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:GPNPP6JBVLCOCCJJY3W6HTHKZS","target":"record","payload":{"canonical_record":{"source":{"id":"1112.0308","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-12-01T20:55:39Z","cross_cats_sorted":[],"title_canon_sha256":"5be7ea2ab2c2786cc2b64152ddc2bbca2e6fc0a4b0ec0413614c9dc91dda6469","abstract_canon_sha256":"40051cd20a83141cd4de7bd245f06618710e94a6eb574ebff29216559a1328ec"},"schema_version":"1.0"},"canonical_sha256":"33daf7f921aac4e10929c6ede3cceacca79efe1e4227c099c45d6dabff82091c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:20.199866Z","signature_b64":"78cyC+ohvHj/J0B1Vnqc27BhlTwvRwNSvLS6rCvLjqZrHQ8CkJ2tv5neD1u9noqGLN1Wbb6XcRo92i4nXTaNCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33daf7f921aac4e10929c6ede3cceacca79efe1e4227c099c45d6dabff82091c","last_reissued_at":"2026-05-18T01:59:20.199110Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:20.199110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.0308","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":"2026-05-18T01:59:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HotvwuDFoE1LmUoLGeBVJhk21whGxvnPo+DbG0S/UgJu7zh9nLO+UYRnZZMGoLd/TCJJsEk8RBg93NDh17ecCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T00:55:17.599095Z"},"content_sha256":"c2ef6a5309a6e49626af138b38f36c0b8188ed7b9de4b452ece65fd1f121f395","schema_version":"1.0","event_id":"sha256:c2ef6a5309a6e49626af138b38f36c0b8188ed7b9de4b452ece65fd1f121f395"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:GPNPP6JBVLCOCCJJY3W6HTHKZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"All Transients, All the Time: Real-Time Radio Transient Detection with Interferometric Closure Quantities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Casey J. Law, Geoffrey C. Bower (UC Berkeley)","submitted_at":"2011-12-01T20:55:39Z","abstract_excerpt":"We demonstrate a new technique for detecting radio transients based on interferometric closure quantities. The technique uses the bispectrum, the product of visibilities around a closed-loop of baselines of an interferometer. The bispectrum is calibration independent, resistant to interference, and computationally efficient, so it can be built into correlators for real-time transient detection. Our technique could find celestial transients anywhere in the field of view and localize them to arcsecond precision. At the Karl G. Jansky Very Large Array (VLA), such a system would have a high survey"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.0308","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":""},"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":"2026-05-18T01:59:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o0BSNcOjLHXCCgUcc556OvHyQmxDFfl+GTTI6D0FEys6AzpaUoLzgTGqiSoZyGC18JTjKsaGG7a/smG/Yj0/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T00:55:17.599466Z"},"content_sha256":"6d8d604fd65b2d7dc02e8c43491d78dd7f84765cbfe7b41f4859dc1eed49a756","schema_version":"1.0","event_id":"sha256:6d8d604fd65b2d7dc02e8c43491d78dd7f84765cbfe7b41f4859dc1eed49a756"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GPNPP6JBVLCOCCJJY3W6HTHKZS/bundle.json","state_url":"https://pith.science/pith/GPNPP6JBVLCOCCJJY3W6HTHKZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GPNPP6JBVLCOCCJJY3W6HTHKZS/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":"2026-06-23T00:55:17Z","links":{"resolver":"https://pith.science/pith/GPNPP6JBVLCOCCJJY3W6HTHKZS","bundle":"https://pith.science/pith/GPNPP6JBVLCOCCJJY3W6HTHKZS/bundle.json","state":"https://pith.science/pith/GPNPP6JBVLCOCCJJY3W6HTHKZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GPNPP6JBVLCOCCJJY3W6HTHKZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GPNPP6JBVLCOCCJJY3W6HTHKZS","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":"40051cd20a83141cd4de7bd245f06618710e94a6eb574ebff29216559a1328ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-12-01T20:55:39Z","title_canon_sha256":"5be7ea2ab2c2786cc2b64152ddc2bbca2e6fc0a4b0ec0413614c9dc91dda6469"},"schema_version":"1.0","source":{"id":"1112.0308","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.0308","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"arxiv_version","alias_value":"1112.0308v2","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.0308","created_at":"2026-05-18T01:59:20Z"},{"alias_kind":"pith_short_12","alias_value":"GPNPP6JBVLCO","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GPNPP6JBVLCOCCJJ","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GPNPP6JB","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:6d8d604fd65b2d7dc02e8c43491d78dd7f84765cbfe7b41f4859dc1eed49a756","target":"graph","created_at":"2026-05-18T01:59:20Z","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 demonstrate a new technique for detecting radio transients based on interferometric closure quantities. The technique uses the bispectrum, the product of visibilities around a closed-loop of baselines of an interferometer. The bispectrum is calibration independent, resistant to interference, and computationally efficient, so it can be built into correlators for real-time transient detection. Our technique could find celestial transients anywhere in the field of view and localize them to arcsecond precision. At the Karl G. Jansky Very Large Array (VLA), such a system would have a high survey","authors_text":"Casey J. Law, Geoffrey C. Bower (UC Berkeley)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-12-01T20:55:39Z","title":"All Transients, All the Time: Real-Time Radio Transient Detection with Interferometric Closure Quantities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.0308","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:c2ef6a5309a6e49626af138b38f36c0b8188ed7b9de4b452ece65fd1f121f395","target":"record","created_at":"2026-05-18T01:59:20Z","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":"40051cd20a83141cd4de7bd245f06618710e94a6eb574ebff29216559a1328ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-12-01T20:55:39Z","title_canon_sha256":"5be7ea2ab2c2786cc2b64152ddc2bbca2e6fc0a4b0ec0413614c9dc91dda6469"},"schema_version":"1.0","source":{"id":"1112.0308","kind":"arxiv","version":2}},"canonical_sha256":"33daf7f921aac4e10929c6ede3cceacca79efe1e4227c099c45d6dabff82091c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33daf7f921aac4e10929c6ede3cceacca79efe1e4227c099c45d6dabff82091c","first_computed_at":"2026-05-18T01:59:20.199110Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:20.199110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"78cyC+ohvHj/J0B1Vnqc27BhlTwvRwNSvLS6rCvLjqZrHQ8CkJ2tv5neD1u9noqGLN1Wbb6XcRo92i4nXTaNCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:20.199866Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.0308","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2ef6a5309a6e49626af138b38f36c0b8188ed7b9de4b452ece65fd1f121f395","sha256:6d8d604fd65b2d7dc02e8c43491d78dd7f84765cbfe7b41f4859dc1eed49a756"],"state_sha256":"13208ef2d5090132b3be55a9dc1ac6d36c4e76fbdfb0a87b2f1bc71bdb025e0e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sgbrpM2T6VweULTU3Cv0cXQWc2AZZTvbX4lWf+q8h9ADdNaI8lBbJhzMVBE9s1GCdNt1fgFzFIJNNG6f5E+TBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T00:55:17.601357Z","bundle_sha256":"419260bd3c8e467ffdf6e2b7eab45d66a873c260ffa7dd2c45ffee236a53dd04"}}