{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:NHMVAQVXCIFU5FIFIPYKY6G2OR","short_pith_number":"pith:NHMVAQVX","canonical_record":{"source":{"id":"1302.4725","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-19T20:05:39Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"439c967c69456f576edd5c129c7e303381eb7ccee1a246361b3c399e7732a6b9","abstract_canon_sha256":"2833f09f4dc21d493cf40cee69cd57f481f14c4859ae7e0b48f616a50ace59c8"},"schema_version":"1.0"},"canonical_sha256":"69d95042b7120b4e950543f0ac78da7460645bb12afca0f6665b7a2874fb26ee","source":{"kind":"arxiv","id":"1302.4725","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.4725","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"arxiv_version","alias_value":"1302.4725v1","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.4725","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"pith_short_12","alias_value":"NHMVAQVXCIFU","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NHMVAQVXCIFU5FIF","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NHMVAQVX","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:NHMVAQVXCIFU5FIFIPYKY6G2OR","target":"record","payload":{"canonical_record":{"source":{"id":"1302.4725","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-19T20:05:39Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"439c967c69456f576edd5c129c7e303381eb7ccee1a246361b3c399e7732a6b9","abstract_canon_sha256":"2833f09f4dc21d493cf40cee69cd57f481f14c4859ae7e0b48f616a50ace59c8"},"schema_version":"1.0"},"canonical_sha256":"69d95042b7120b4e950543f0ac78da7460645bb12afca0f6665b7a2874fb26ee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:35.217084Z","signature_b64":"CCVFuBOiJKHdav5bGaHit17ApW+3v5Ntw/QvrpbA7Gw1RJ4plWx4y4FcRgz6iZg0EDh7si0cpAGdlunnhS6VCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69d95042b7120b4e950543f0ac78da7460645bb12afca0f6665b7a2874fb26ee","last_reissued_at":"2026-05-18T01:51:35.216705Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:35.216705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.4725","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":"2026-05-18T01:51:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LvxQb+0BbDUwb9aigL0PDRJ1oluo1QJIcnrj64kR6aWry8h49G5U6VfuQqgbcYwdN1tXKNDq0+noeS+xCo5oCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T13:33:31.395830Z"},"content_sha256":"c3bf117b12693b6acb2a9ee1bd37be53179fc70865ac5591c382022f130b6e0f","schema_version":"1.0","event_id":"sha256:c3bf117b12693b6acb2a9ee1bd37be53179fc70865ac5591c382022f130b6e0f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:NHMVAQVXCIFU5FIFIPYKY6G2OR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Search for Rapidly Spinning Pulsars and Fast Transients in Unidentified Radio Sources with the NRAO 43-Meter Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Claire Gilpin, Deborah Schmidt, Fronefield Crawford, Glen Langston","submitted_at":"2013-02-19T20:05:39Z","abstract_excerpt":"We have searched 75 unidentified radio sources selected from the NRAO VLA Sky Survey (NVSS) catalog for the presence of rapidly spinning pulsars and short, dispersed radio bursts. The sources are radio bright, have no identifications or optical source coincidences, are more than 5% linearly polarized, and are spatially unresolved in the catalog. If these sources are fast-spinning pulsars (e.g. sub-millisecond pulsars), previous large-scale pulsar surveys may have missed detection due to instrumental and computational limitations, eclipsing effects, or diffractive scintillation. The discovery o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.4725","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":"2026-05-18T01:51:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qt3bNHVKratpUdWbyKqDIfFobzkJUwhYWDGmLAPIduD/7k9ZONdEDpNF0HhceckTmpZp2Umejf1gADKmm3LrBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T13:33:31.396173Z"},"content_sha256":"02febd929658b0656f09c55a544e7e34d56d1e8d6a1cbda72d86659d80b2ae41","schema_version":"1.0","event_id":"sha256:02febd929658b0656f09c55a544e7e34d56d1e8d6a1cbda72d86659d80b2ae41"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NHMVAQVXCIFU5FIFIPYKY6G2OR/bundle.json","state_url":"https://pith.science/pith/NHMVAQVXCIFU5FIFIPYKY6G2OR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NHMVAQVXCIFU5FIFIPYKY6G2OR/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":"2026-06-08T13:33:31Z","links":{"resolver":"https://pith.science/pith/NHMVAQVXCIFU5FIFIPYKY6G2OR","bundle":"https://pith.science/pith/NHMVAQVXCIFU5FIFIPYKY6G2OR/bundle.json","state":"https://pith.science/pith/NHMVAQVXCIFU5FIFIPYKY6G2OR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NHMVAQVXCIFU5FIFIPYKY6G2OR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:NHMVAQVXCIFU5FIFIPYKY6G2OR","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":"2833f09f4dc21d493cf40cee69cd57f481f14c4859ae7e0b48f616a50ace59c8","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-19T20:05:39Z","title_canon_sha256":"439c967c69456f576edd5c129c7e303381eb7ccee1a246361b3c399e7732a6b9"},"schema_version":"1.0","source":{"id":"1302.4725","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.4725","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"arxiv_version","alias_value":"1302.4725v1","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.4725","created_at":"2026-05-18T01:51:35Z"},{"alias_kind":"pith_short_12","alias_value":"NHMVAQVXCIFU","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NHMVAQVXCIFU5FIF","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NHMVAQVX","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:02febd929658b0656f09c55a544e7e34d56d1e8d6a1cbda72d86659d80b2ae41","target":"graph","created_at":"2026-05-18T01:51:35Z","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 have searched 75 unidentified radio sources selected from the NRAO VLA Sky Survey (NVSS) catalog for the presence of rapidly spinning pulsars and short, dispersed radio bursts. The sources are radio bright, have no identifications or optical source coincidences, are more than 5% linearly polarized, and are spatially unresolved in the catalog. If these sources are fast-spinning pulsars (e.g. sub-millisecond pulsars), previous large-scale pulsar surveys may have missed detection due to instrumental and computational limitations, eclipsing effects, or diffractive scintillation. The discovery o","authors_text":"Claire Gilpin, Deborah Schmidt, Fronefield Crawford, Glen Langston","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-19T20:05:39Z","title":"A Search for Rapidly Spinning Pulsars and Fast Transients in Unidentified Radio Sources with the NRAO 43-Meter Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.4725","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:c3bf117b12693b6acb2a9ee1bd37be53179fc70865ac5591c382022f130b6e0f","target":"record","created_at":"2026-05-18T01:51:35Z","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":"2833f09f4dc21d493cf40cee69cd57f481f14c4859ae7e0b48f616a50ace59c8","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-19T20:05:39Z","title_canon_sha256":"439c967c69456f576edd5c129c7e303381eb7ccee1a246361b3c399e7732a6b9"},"schema_version":"1.0","source":{"id":"1302.4725","kind":"arxiv","version":1}},"canonical_sha256":"69d95042b7120b4e950543f0ac78da7460645bb12afca0f6665b7a2874fb26ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69d95042b7120b4e950543f0ac78da7460645bb12afca0f6665b7a2874fb26ee","first_computed_at":"2026-05-18T01:51:35.216705Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:35.216705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CCVFuBOiJKHdav5bGaHit17ApW+3v5Ntw/QvrpbA7Gw1RJ4plWx4y4FcRgz6iZg0EDh7si0cpAGdlunnhS6VCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:35.217084Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.4725","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c3bf117b12693b6acb2a9ee1bd37be53179fc70865ac5591c382022f130b6e0f","sha256:02febd929658b0656f09c55a544e7e34d56d1e8d6a1cbda72d86659d80b2ae41"],"state_sha256":"8c50af75b0061e6f0809721bc881669fc170840be4c2172eb04f6db2a94a94a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U9i0iF8Vz5A2fGhDI3LnlHQy1Yb0b8KkFEemgQpFHccJNGWD7X62uMHsUhpNXKZ3sKjut4NAqvsHkQ+ZzEKyBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T13:33:31.398014Z","bundle_sha256":"f80fd14713e2cae3459f54599d68de1d3684e5410afb7a15decc24e15aef0d7d"}}