{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:E3WGDCVPDVB3JKMJ3XYGF7NIHH","short_pith_number":"pith:E3WGDCVP","canonical_record":{"source":{"id":"2003.14272","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-03-31T14:54:30Z","cross_cats_sorted":[],"title_canon_sha256":"a5888c5ccfbf3a49502419a89287e06a5eeeb2ba6faf793f5068b511f7f89bca","abstract_canon_sha256":"7e2b538187e6d446ee0caec3d2d6a551c0d2d77fae457bf35f3d7a88e3ecc8af"},"schema_version":"1.0"},"canonical_sha256":"26ec618aaf1d43b4a989ddf062fda839f4551706a4d0f591c2d37017c2770525","source":{"kind":"arxiv","id":"2003.14272","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.14272","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"arxiv_version","alias_value":"2003.14272v1","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.14272","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"pith_short_12","alias_value":"E3WGDCVPDVB3","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"pith_short_16","alias_value":"E3WGDCVPDVB3JKMJ","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"pith_short_8","alias_value":"E3WGDCVP","created_at":"2026-07-05T01:18:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:E3WGDCVPDVB3JKMJ3XYGF7NIHH","target":"record","payload":{"canonical_record":{"source":{"id":"2003.14272","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-03-31T14:54:30Z","cross_cats_sorted":[],"title_canon_sha256":"a5888c5ccfbf3a49502419a89287e06a5eeeb2ba6faf793f5068b511f7f89bca","abstract_canon_sha256":"7e2b538187e6d446ee0caec3d2d6a551c0d2d77fae457bf35f3d7a88e3ecc8af"},"schema_version":"1.0"},"canonical_sha256":"26ec618aaf1d43b4a989ddf062fda839f4551706a4d0f591c2d37017c2770525","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:18:58.444766Z","signature_b64":"LYJl7nYZ73u2jLb0HLD8gvZIhNyPw2dXJ/acyihRn5qn/z2dpfUF+cweXr932ZnPdmbvp6f445eIGQNhz++cDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"26ec618aaf1d43b4a989ddf062fda839f4551706a4d0f591c2d37017c2770525","last_reissued_at":"2026-07-05T01:18:58.444173Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:18:58.444173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.14272","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":"2026-07-05T01:18:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BWY7qRCE3bWfxZJh5QSX2w8H44PbZvZECQ6sG4rmOGjf5Mnd5p1Ofiwtbb5d21+VIzjzRE9GmYarGUkbiEnZBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T03:58:59.374262Z"},"content_sha256":"9aac531a469595a2800a8b7e77c8521ddefd7b84387b0b677f20123357db0f53","schema_version":"1.0","event_id":"sha256:9aac531a469595a2800a8b7e77c8521ddefd7b84387b0b677f20123357db0f53"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:E3WGDCVPDVB3JKMJ3XYGF7NIHH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Initial results from a realtime FRB search with the GBT","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Karastergiou, A.P.V. Siemion, Devansh Agarwal, D.H.E. MacMahon, D.R. Lorimer, D. Werthimer, G. Foster, G. Golpayegani, J. Cobb, M.A. McLaughlin, M.P. Surnis, S. White, W. Armour, X. Pei","submitted_at":"2020-03-31T14:54:30Z","abstract_excerpt":"We present the data analysis pipeline, commissioning observations and initial results from the GREENBURST fast radio burst (FRB) detection system on the Robert C. Byrd Green Bank Telescope (GBT) previously described by Surnis et al. which uses the 21~cm receiver observing commensally with other projects. The pipeline makes use of a state-of-the-art deep learning classifier to winnow down the very large number of false positive single-pulse candidates that mostly result from radio frequency interference. In our observations totalling 156.5 days so far, we have detected individual pulses from 20"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.14272","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/2003.14272/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":"2026-07-05T01:18:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sYJNc4HOMTRjV3xWAHJveixgYURUmuHe6mhKTNT9a3KITdayoGAfZHqSXqQiTGq69vWAnIEVn7yTM4UlNISqBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T03:58:59.375078Z"},"content_sha256":"e40bf8841eadb37879a46add11caed279c7f58f69352c7dd3cf8bbb0cff86cd2","schema_version":"1.0","event_id":"sha256:e40bf8841eadb37879a46add11caed279c7f58f69352c7dd3cf8bbb0cff86cd2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E3WGDCVPDVB3JKMJ3XYGF7NIHH/bundle.json","state_url":"https://pith.science/pith/E3WGDCVPDVB3JKMJ3XYGF7NIHH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E3WGDCVPDVB3JKMJ3XYGF7NIHH/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":"2026-08-16T03:58:59Z","links":{"resolver":"https://pith.science/pith/E3WGDCVPDVB3JKMJ3XYGF7NIHH","bundle":"https://pith.science/pith/E3WGDCVPDVB3JKMJ3XYGF7NIHH/bundle.json","state":"https://pith.science/pith/E3WGDCVPDVB3JKMJ3XYGF7NIHH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E3WGDCVPDVB3JKMJ3XYGF7NIHH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:E3WGDCVPDVB3JKMJ3XYGF7NIHH","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":"7e2b538187e6d446ee0caec3d2d6a551c0d2d77fae457bf35f3d7a88e3ecc8af","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-03-31T14:54:30Z","title_canon_sha256":"a5888c5ccfbf3a49502419a89287e06a5eeeb2ba6faf793f5068b511f7f89bca"},"schema_version":"1.0","source":{"id":"2003.14272","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.14272","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"arxiv_version","alias_value":"2003.14272v1","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.14272","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"pith_short_12","alias_value":"E3WGDCVPDVB3","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"pith_short_16","alias_value":"E3WGDCVPDVB3JKMJ","created_at":"2026-07-05T01:18:58Z"},{"alias_kind":"pith_short_8","alias_value":"E3WGDCVP","created_at":"2026-07-05T01:18:58Z"}],"graph_snapshots":[{"event_id":"sha256:e40bf8841eadb37879a46add11caed279c7f58f69352c7dd3cf8bbb0cff86cd2","target":"graph","created_at":"2026-07-05T01:18:58Z","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/2003.14272/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the data analysis pipeline, commissioning observations and initial results from the GREENBURST fast radio burst (FRB) detection system on the Robert C. Byrd Green Bank Telescope (GBT) previously described by Surnis et al. which uses the 21~cm receiver observing commensally with other projects. The pipeline makes use of a state-of-the-art deep learning classifier to winnow down the very large number of false positive single-pulse candidates that mostly result from radio frequency interference. In our observations totalling 156.5 days so far, we have detected individual pulses from 20","authors_text":"A. Karastergiou, A.P.V. Siemion, Devansh Agarwal, D.H.E. MacMahon, D.R. Lorimer, D. Werthimer, G. Foster, G. Golpayegani, J. Cobb, M.A. McLaughlin, M.P. Surnis, S. White, W. Armour, X. Pei","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-03-31T14:54:30Z","title":"Initial results from a realtime FRB search with the GBT"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.14272","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":"sha256:9aac531a469595a2800a8b7e77c8521ddefd7b84387b0b677f20123357db0f53","target":"record","created_at":"2026-07-05T01:18:58Z","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":"7e2b538187e6d446ee0caec3d2d6a551c0d2d77fae457bf35f3d7a88e3ecc8af","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-03-31T14:54:30Z","title_canon_sha256":"a5888c5ccfbf3a49502419a89287e06a5eeeb2ba6faf793f5068b511f7f89bca"},"schema_version":"1.0","source":{"id":"2003.14272","kind":"arxiv","version":1}},"canonical_sha256":"26ec618aaf1d43b4a989ddf062fda839f4551706a4d0f591c2d37017c2770525","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"26ec618aaf1d43b4a989ddf062fda839f4551706a4d0f591c2d37017c2770525","first_computed_at":"2026-07-05T01:18:58.444173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:18:58.444173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LYJl7nYZ73u2jLb0HLD8gvZIhNyPw2dXJ/acyihRn5qn/z2dpfUF+cweXr932ZnPdmbvp6f445eIGQNhz++cDA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:18:58.444766Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.14272","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9aac531a469595a2800a8b7e77c8521ddefd7b84387b0b677f20123357db0f53","sha256:e40bf8841eadb37879a46add11caed279c7f58f69352c7dd3cf8bbb0cff86cd2"],"state_sha256":"452e1deaa52c5bb29d3586ac9fcbd89bb7d3cd32151e452038a5bec0b4490d9e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XdvFrtEtppDPTWsIpT9HfvxSdSQj+lpoB3IDNWQS7Xye+wz6IQHoe6Z8V0LXgOPVdT/eySECbtucEfqcjv49Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T03:58:59.381740Z","bundle_sha256":"9b302d5ad05d61181c0bc96ef7c42107d098a7266ac8410b9511e0b4d87a8ab6"}}