{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:QKHC4V5SQLIRUCIIB4KJKEBFRO","short_pith_number":"pith:QKHC4V5S","canonical_record":{"source":{"id":"1307.1409","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-04T16:59:02Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"8905ad85dc8bf662566ac43543261086242ac32e90fd0fa1bf68099542e1a19d","abstract_canon_sha256":"57bcf04ce7f9c806327b4327aa1f27f57d447881b193be5a94040833c2484fb5"},"schema_version":"1.0"},"canonical_sha256":"828e2e57b282d11a09080f149510258bb80a90a4d97cdff0d301366f134f8ef0","source":{"kind":"arxiv","id":"1307.1409","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.1409","created_at":"2026-05-18T02:54:21Z"},{"alias_kind":"arxiv_version","alias_value":"1307.1409v2","created_at":"2026-05-18T02:54:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1409","created_at":"2026-05-18T02:54:21Z"},{"alias_kind":"pith_short_12","alias_value":"QKHC4V5SQLIR","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QKHC4V5SQLIRUCII","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QKHC4V5S","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:QKHC4V5SQLIRUCIIB4KJKEBFRO","target":"record","payload":{"canonical_record":{"source":{"id":"1307.1409","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-04T16:59:02Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"8905ad85dc8bf662566ac43543261086242ac32e90fd0fa1bf68099542e1a19d","abstract_canon_sha256":"57bcf04ce7f9c806327b4327aa1f27f57d447881b193be5a94040833c2484fb5"},"schema_version":"1.0"},"canonical_sha256":"828e2e57b282d11a09080f149510258bb80a90a4d97cdff0d301366f134f8ef0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:54:21.417238Z","signature_b64":"j2LXwtKfvkIDWGXoPxx34/OS9KktSw6IzlpZPEZKstIddpP4gNxFAaSL+leF9GUH954ZF8B/2FeN9v/53lYABw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"828e2e57b282d11a09080f149510258bb80a90a4d97cdff0d301366f134f8ef0","last_reissued_at":"2026-05-18T02:54:21.416789Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:54:21.416789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.1409","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":"2026-05-18T02:54:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i22flOxy3BqW5vlIONEOXKcOXgYlropLv8Sr69NJ52tlVO9pYWqNXBgEUHgQ3boJS2QYAvjcJ3NEbNK4F46SAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:01:53.763110Z"},"content_sha256":"6a6e9be1b4c906ae14855f07eefd8d7c17c1d08da98d25ff6e8fc153501e96e9","schema_version":"1.0","event_id":"sha256:6a6e9be1b4c906ae14855f07eefd8d7c17c1d08da98d25ff6e8fc153501e96e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:QKHC4V5SQLIRUCIIB4KJKEBFRO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast radio bursts: the last sign of supramassive neutron stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"2, (2) ASTRON, 3), (3) MPIfR Bonn, (4) AEI Potsdam, 5) ((1) Radboud University Nijmegen, (5) Goethe University Frankfurt), Heino Falcke (1, Luciano Rezzolla (4","submitted_at":"2013-07-04T16:59:02Z","abstract_excerpt":"Several fast radio bursts have been discovered recently, showing a bright, highly dispersed millisecond radio pulse. The pulses do not repeat and are not associated with a known pulsar or gamma-ray burst. The high dispersion suggests sources at cosmological distances, hence implying an extremely high radio luminosity, far larger than the power of single pulses from a pulsar. We suggest that a fast radio burst represents the final signal of a supramassive rotating neutron star that collapses to a black hole due to magnetic braking. The neutron star is initially above the critical mass for non-r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1409","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":"2026-05-18T02:54:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"40MoytKi+ujymaTYx1PUpQtlkTYsZLjfMtt7glwqGJmKD9Zlr9hFlc7zuU25bSQbdbk2nakry5Y+P3TDzJ+gAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:01:53.763600Z"},"content_sha256":"b0fb014c3366e258445ae1f39ecd47e08df89b5fd3324df73c50e003fd0164d9","schema_version":"1.0","event_id":"sha256:b0fb014c3366e258445ae1f39ecd47e08df89b5fd3324df73c50e003fd0164d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QKHC4V5SQLIRUCIIB4KJKEBFRO/bundle.json","state_url":"https://pith.science/pith/QKHC4V5SQLIRUCIIB4KJKEBFRO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QKHC4V5SQLIRUCIIB4KJKEBFRO/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":"2026-05-18T20:01:53Z","links":{"resolver":"https://pith.science/pith/QKHC4V5SQLIRUCIIB4KJKEBFRO","bundle":"https://pith.science/pith/QKHC4V5SQLIRUCIIB4KJKEBFRO/bundle.json","state":"https://pith.science/pith/QKHC4V5SQLIRUCIIB4KJKEBFRO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QKHC4V5SQLIRUCIIB4KJKEBFRO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:QKHC4V5SQLIRUCIIB4KJKEBFRO","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":"57bcf04ce7f9c806327b4327aa1f27f57d447881b193be5a94040833c2484fb5","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-04T16:59:02Z","title_canon_sha256":"8905ad85dc8bf662566ac43543261086242ac32e90fd0fa1bf68099542e1a19d"},"schema_version":"1.0","source":{"id":"1307.1409","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.1409","created_at":"2026-05-18T02:54:21Z"},{"alias_kind":"arxiv_version","alias_value":"1307.1409v2","created_at":"2026-05-18T02:54:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1409","created_at":"2026-05-18T02:54:21Z"},{"alias_kind":"pith_short_12","alias_value":"QKHC4V5SQLIR","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QKHC4V5SQLIRUCII","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QKHC4V5S","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:b0fb014c3366e258445ae1f39ecd47e08df89b5fd3324df73c50e003fd0164d9","target":"graph","created_at":"2026-05-18T02:54:21Z","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":"Several fast radio bursts have been discovered recently, showing a bright, highly dispersed millisecond radio pulse. The pulses do not repeat and are not associated with a known pulsar or gamma-ray burst. The high dispersion suggests sources at cosmological distances, hence implying an extremely high radio luminosity, far larger than the power of single pulses from a pulsar. We suggest that a fast radio burst represents the final signal of a supramassive rotating neutron star that collapses to a black hole due to magnetic braking. The neutron star is initially above the critical mass for non-r","authors_text":"2, (2) ASTRON, 3), (3) MPIfR Bonn, (4) AEI Potsdam, 5) ((1) Radboud University Nijmegen, (5) Goethe University Frankfurt), Heino Falcke (1, Luciano Rezzolla (4","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-04T16:59:02Z","title":"Fast radio bursts: the last sign of supramassive neutron stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1409","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":"sha256:6a6e9be1b4c906ae14855f07eefd8d7c17c1d08da98d25ff6e8fc153501e96e9","target":"record","created_at":"2026-05-18T02:54:21Z","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":"57bcf04ce7f9c806327b4327aa1f27f57d447881b193be5a94040833c2484fb5","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-07-04T16:59:02Z","title_canon_sha256":"8905ad85dc8bf662566ac43543261086242ac32e90fd0fa1bf68099542e1a19d"},"schema_version":"1.0","source":{"id":"1307.1409","kind":"arxiv","version":2}},"canonical_sha256":"828e2e57b282d11a09080f149510258bb80a90a4d97cdff0d301366f134f8ef0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"828e2e57b282d11a09080f149510258bb80a90a4d97cdff0d301366f134f8ef0","first_computed_at":"2026-05-18T02:54:21.416789Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:54:21.416789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j2LXwtKfvkIDWGXoPxx34/OS9KktSw6IzlpZPEZKstIddpP4gNxFAaSL+leF9GUH954ZF8B/2FeN9v/53lYABw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:54:21.417238Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.1409","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6a6e9be1b4c906ae14855f07eefd8d7c17c1d08da98d25ff6e8fc153501e96e9","sha256:b0fb014c3366e258445ae1f39ecd47e08df89b5fd3324df73c50e003fd0164d9"],"state_sha256":"09a3000b6be8f09de55b59adf8d8c285de3f17ecdac6f901aee08d71fdda041c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tyJS+1iGsgn9gPwYA0lkHHTkarQB7k9Bks/yfyQEqBbg9gSYIdBBPdqGsaTU4r7U12a8sUItQChx3QKqvs6IAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T20:01:53.765547Z","bundle_sha256":"ed068f7b3e9f75b46fb141a8d6c1baf2c7f4d6b6459f1113b76549556b89eadc"}}