{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:WUIWL6NEZNWJ22E3O2YWDSMWWQ","short_pith_number":"pith:WUIWL6NE","canonical_record":{"source":{"id":"1811.00360","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-01T13:21:16Z","cross_cats_sorted":[],"title_canon_sha256":"f59c5dee8a8c2292011cf5be290b06bbf7318e43f469e578a5cc675cd53846f4","abstract_canon_sha256":"16cdd38b792479e863395e35b67c31ad3eda727823725b991c6ee3e1c8812d6f"},"schema_version":"1.0"},"canonical_sha256":"b51165f9a4cb6c9d689b76b161c996b434a3d056233c84e75a89e901c53cd7ac","source":{"kind":"arxiv","id":"1811.00360","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.00360","created_at":"2026-05-18T00:01:46Z"},{"alias_kind":"arxiv_version","alias_value":"1811.00360v1","created_at":"2026-05-18T00:01:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.00360","created_at":"2026-05-18T00:01:46Z"},{"alias_kind":"pith_short_12","alias_value":"WUIWL6NEZNWJ","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WUIWL6NEZNWJ22E3","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WUIWL6NE","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:WUIWL6NEZNWJ22E3O2YWDSMWWQ","target":"record","payload":{"canonical_record":{"source":{"id":"1811.00360","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-01T13:21:16Z","cross_cats_sorted":[],"title_canon_sha256":"f59c5dee8a8c2292011cf5be290b06bbf7318e43f469e578a5cc675cd53846f4","abstract_canon_sha256":"16cdd38b792479e863395e35b67c31ad3eda727823725b991c6ee3e1c8812d6f"},"schema_version":"1.0"},"canonical_sha256":"b51165f9a4cb6c9d689b76b161c996b434a3d056233c84e75a89e901c53cd7ac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:46.658964Z","signature_b64":"7WmybJgCJY1QZ6yh96FB0IpUBDgkAz0rvhtXwUBqSqZd87MJMRajj7/+ymoukpBiuhSnVj1yBX45P+lTbGx2Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b51165f9a4cb6c9d689b76b161c996b434a3d056233c84e75a89e901c53cd7ac","last_reissued_at":"2026-05-18T00:01:46.658496Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:46.658496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.00360","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":"2026-05-18T00:01:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"swLN8rkDJmgmOicU90UEaytihjhc+kUd6j73JVBWRJq/de8HAleZt1rM9y7lOIaZWCyOHLHQVZ7J+55cORHTBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:38:24.209228Z"},"content_sha256":"05f673a3b2da573ef16d267b936d14b0620afea775f3866c81c734b1a849757b","schema_version":"1.0","event_id":"sha256:05f673a3b2da573ef16d267b936d14b0620afea775f3866c81c734b1a849757b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:WUIWL6NEZNWJ22E3O2YWDSMWWQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"One or several populations of fast radio burst sources?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"B. W. Stappers, L. G. Spitler, M. Caleb","submitted_at":"2018-11-01T13:21:16Z","abstract_excerpt":"To date, one repeating and many apparently non-repeating fast radio bursts have been detected. This dichotomy has driven discussions about whether fast radio bursts stem from a single population of sources or two or more different populations. Here we present the arguments for and against."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00360","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":""},"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":"2026-05-18T00:01:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1tSchgqFw5jpFRSkO8Bo8PjhuGWWRVtLuDOt3EffZhgtHxssCnno9ob/0m1OnhsFjUjeHMUQ4TDMdfNoWpEZBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:38:24.209600Z"},"content_sha256":"f415b9905d731f5f6bf932c3fae812a47f4b2b1cebcc9ea8e511d1c72513563f","schema_version":"1.0","event_id":"sha256:f415b9905d731f5f6bf932c3fae812a47f4b2b1cebcc9ea8e511d1c72513563f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WUIWL6NEZNWJ22E3O2YWDSMWWQ/bundle.json","state_url":"https://pith.science/pith/WUIWL6NEZNWJ22E3O2YWDSMWWQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WUIWL6NEZNWJ22E3O2YWDSMWWQ/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":"2026-05-31T23:38:24Z","links":{"resolver":"https://pith.science/pith/WUIWL6NEZNWJ22E3O2YWDSMWWQ","bundle":"https://pith.science/pith/WUIWL6NEZNWJ22E3O2YWDSMWWQ/bundle.json","state":"https://pith.science/pith/WUIWL6NEZNWJ22E3O2YWDSMWWQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WUIWL6NEZNWJ22E3O2YWDSMWWQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:WUIWL6NEZNWJ22E3O2YWDSMWWQ","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":"16cdd38b792479e863395e35b67c31ad3eda727823725b991c6ee3e1c8812d6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-01T13:21:16Z","title_canon_sha256":"f59c5dee8a8c2292011cf5be290b06bbf7318e43f469e578a5cc675cd53846f4"},"schema_version":"1.0","source":{"id":"1811.00360","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.00360","created_at":"2026-05-18T00:01:46Z"},{"alias_kind":"arxiv_version","alias_value":"1811.00360v1","created_at":"2026-05-18T00:01:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.00360","created_at":"2026-05-18T00:01:46Z"},{"alias_kind":"pith_short_12","alias_value":"WUIWL6NEZNWJ","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WUIWL6NEZNWJ22E3","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WUIWL6NE","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:f415b9905d731f5f6bf932c3fae812a47f4b2b1cebcc9ea8e511d1c72513563f","target":"graph","created_at":"2026-05-18T00:01:46Z","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":"To date, one repeating and many apparently non-repeating fast radio bursts have been detected. This dichotomy has driven discussions about whether fast radio bursts stem from a single population of sources or two or more different populations. Here we present the arguments for and against.","authors_text":"B. W. Stappers, L. G. Spitler, M. Caleb","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-01T13:21:16Z","title":"One or several populations of fast radio burst sources?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00360","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":"sha256:05f673a3b2da573ef16d267b936d14b0620afea775f3866c81c734b1a849757b","target":"record","created_at":"2026-05-18T00:01:46Z","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":"16cdd38b792479e863395e35b67c31ad3eda727823725b991c6ee3e1c8812d6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-01T13:21:16Z","title_canon_sha256":"f59c5dee8a8c2292011cf5be290b06bbf7318e43f469e578a5cc675cd53846f4"},"schema_version":"1.0","source":{"id":"1811.00360","kind":"arxiv","version":1}},"canonical_sha256":"b51165f9a4cb6c9d689b76b161c996b434a3d056233c84e75a89e901c53cd7ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b51165f9a4cb6c9d689b76b161c996b434a3d056233c84e75a89e901c53cd7ac","first_computed_at":"2026-05-18T00:01:46.658496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:46.658496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7WmybJgCJY1QZ6yh96FB0IpUBDgkAz0rvhtXwUBqSqZd87MJMRajj7/+ymoukpBiuhSnVj1yBX45P+lTbGx2Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:46.658964Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.00360","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:05f673a3b2da573ef16d267b936d14b0620afea775f3866c81c734b1a849757b","sha256:f415b9905d731f5f6bf932c3fae812a47f4b2b1cebcc9ea8e511d1c72513563f"],"state_sha256":"2d95bffaaad78a6a48b8b476d648f2b5289b9f9cf2323d8029daa6c09453536e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RkYwaeKi3dI39rTh3Ogo0sS8xQryG1jV4iPX1cBAwladRtFK1vdJi3ybgQZNM8bJNp47HkxQtoJkiLUbRRDGBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:38:24.212575Z","bundle_sha256":"6e5c6966527ca38e4b4f8cee5a67f81fc18cc9821eced1fb9fc5528cf40b74c4"}}