{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:M5PH7EMAELTKUDIIFTWVDVHTID","short_pith_number":"pith:M5PH7EMA","canonical_record":{"source":{"id":"1209.4293","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-19T16:12:07Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"2f1e2be099f847364dc7f266f26634bfee32c66712eb4b2bbf95f79dbdf63857","abstract_canon_sha256":"7b9fb3b8e62faf3331464b3d187cbc963a3aefedb5572253225d6b5fc42d57e4"},"schema_version":"1.0"},"canonical_sha256":"675e7f918022e6aa0d082ced51d4f340d5c739d4e2ddecdfd42b3c4df45b14bd","source":{"kind":"arxiv","id":"1209.4293","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.4293","created_at":"2026-05-18T01:54:21Z"},{"alias_kind":"arxiv_version","alias_value":"1209.4293v3","created_at":"2026-05-18T01:54:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.4293","created_at":"2026-05-18T01:54:21Z"},{"alias_kind":"pith_short_12","alias_value":"M5PH7EMAELTK","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"M5PH7EMAELTKUDII","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"M5PH7EMA","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:M5PH7EMAELTKUDIIFTWVDVHTID","target":"record","payload":{"canonical_record":{"source":{"id":"1209.4293","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-19T16:12:07Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"2f1e2be099f847364dc7f266f26634bfee32c66712eb4b2bbf95f79dbdf63857","abstract_canon_sha256":"7b9fb3b8e62faf3331464b3d187cbc963a3aefedb5572253225d6b5fc42d57e4"},"schema_version":"1.0"},"canonical_sha256":"675e7f918022e6aa0d082ced51d4f340d5c739d4e2ddecdfd42b3c4df45b14bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:21.023383Z","signature_b64":"4LqA4kZn7Qj8Dp0uGYhuF2Mnt/p3o4+noycpaHnSmC9AbKMysetshW2D2dxjHQYfiJkCJ4GaYwfZsC2fzq8jBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"675e7f918022e6aa0d082ced51d4f340d5c739d4e2ddecdfd42b3c4df45b14bd","last_reissued_at":"2026-05-18T01:54:21.022948Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:21.022948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.4293","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:54:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F5UBhrDI7tX0Ckis/rJtum58Cd2E2Zs7ARjToMlWyYnf7p0Rx8AQYAODZ4ICTkMqgvXTVhy1xHdQQt3hfP8TBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:57:30.344230Z"},"content_sha256":"c019a2dd2bf972510f4555122afedcab8b5e7c7f7f74a20401f24cff0ce8df01","schema_version":"1.0","event_id":"sha256:c019a2dd2bf972510f4555122afedcab8b5e7c7f7f74a20401f24cff0ce8df01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:M5PH7EMAELTKUDIIFTWVDVHTID","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Green Bank Telescope 350 MHz Drift-scan Survey I: Survey Observations and the Discovery of 13 Pulsars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Aaron Berndsen, Angus Cherry, Anne Archibald, Chen Karako-Argaman, Christie A. McPhee, Courtney R. Epstein, Duncan R. Lorimer, Ingrid H. Stairs, Jason Boyles, Jason W. T. Hessels, Joeri van Leeuwen, Kevin Stovall, Mallory S. E. Roberts, Maura A. McLaughlin, Rogerio F. Cardoso, Ryan S. Lynch, Scott M. Ransom, Tim Pennucci, Vicky M. Kaspi, Vlad I. Kondratiev","submitted_at":"2012-09-19T16:12:07Z","abstract_excerpt":"Over the summer of 2007, we obtained 1191 hours of `drift-scan' pulsar search observations with the Green Bank Telescope at a radio frequency of 350 MHz. Here we describe the survey setup, search procedure, and the discovery and follow-up timing of thirteen pulsars. Among the new discoveries, one (PSR J1623-0841) was discovered only through its single pulses, two (PSRs J1327-0755 and J1737-0814) are millisecond pulsars, and another (PSR J2222-0137) is a mildly recycled pulsar. PSR J1327-0755 is a 2.7 ms pulsar at a DM of 27.9 pc cm^{-3} in a 8.7 day orbit with a minimum companion mass of 0.22 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.4293","kind":"arxiv","version":3},"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":"2026-05-18T01:54:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8s+7WyfYhrrwTYMff4PbcZ9NENC5O7LSbQpQZbitKXRzw9FaPamGQirlg21tg6JuLSCdoMrLM4DkJ35EGKi6CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:57:30.344612Z"},"content_sha256":"2665162d2cc80f5496bfb03bd2ae7e1d7225216921b4c3b82cf7dd6b310600eb","schema_version":"1.0","event_id":"sha256:2665162d2cc80f5496bfb03bd2ae7e1d7225216921b4c3b82cf7dd6b310600eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M5PH7EMAELTKUDIIFTWVDVHTID/bundle.json","state_url":"https://pith.science/pith/M5PH7EMAELTKUDIIFTWVDVHTID/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M5PH7EMAELTKUDIIFTWVDVHTID/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":"2026-05-28T03:57:30Z","links":{"resolver":"https://pith.science/pith/M5PH7EMAELTKUDIIFTWVDVHTID","bundle":"https://pith.science/pith/M5PH7EMAELTKUDIIFTWVDVHTID/bundle.json","state":"https://pith.science/pith/M5PH7EMAELTKUDIIFTWVDVHTID/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M5PH7EMAELTKUDIIFTWVDVHTID/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:M5PH7EMAELTKUDIIFTWVDVHTID","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":"7b9fb3b8e62faf3331464b3d187cbc963a3aefedb5572253225d6b5fc42d57e4","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-19T16:12:07Z","title_canon_sha256":"2f1e2be099f847364dc7f266f26634bfee32c66712eb4b2bbf95f79dbdf63857"},"schema_version":"1.0","source":{"id":"1209.4293","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.4293","created_at":"2026-05-18T01:54:21Z"},{"alias_kind":"arxiv_version","alias_value":"1209.4293v3","created_at":"2026-05-18T01:54:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.4293","created_at":"2026-05-18T01:54:21Z"},{"alias_kind":"pith_short_12","alias_value":"M5PH7EMAELTK","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"M5PH7EMAELTKUDII","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"M5PH7EMA","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:2665162d2cc80f5496bfb03bd2ae7e1d7225216921b4c3b82cf7dd6b310600eb","target":"graph","created_at":"2026-05-18T01:54:21Z","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":"Over the summer of 2007, we obtained 1191 hours of `drift-scan' pulsar search observations with the Green Bank Telescope at a radio frequency of 350 MHz. Here we describe the survey setup, search procedure, and the discovery and follow-up timing of thirteen pulsars. Among the new discoveries, one (PSR J1623-0841) was discovered only through its single pulses, two (PSRs J1327-0755 and J1737-0814) are millisecond pulsars, and another (PSR J2222-0137) is a mildly recycled pulsar. PSR J1327-0755 is a 2.7 ms pulsar at a DM of 27.9 pc cm^{-3} in a 8.7 day orbit with a minimum companion mass of 0.22 ","authors_text":"Aaron Berndsen, Angus Cherry, Anne Archibald, Chen Karako-Argaman, Christie A. McPhee, Courtney R. Epstein, Duncan R. Lorimer, Ingrid H. Stairs, Jason Boyles, Jason W. T. Hessels, Joeri van Leeuwen, Kevin Stovall, Mallory S. E. Roberts, Maura A. McLaughlin, Rogerio F. Cardoso, Ryan S. Lynch, Scott M. Ransom, Tim Pennucci, Vicky M. Kaspi, Vlad I. Kondratiev","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-19T16:12:07Z","title":"The Green Bank Telescope 350 MHz Drift-scan Survey I: Survey Observations and the Discovery of 13 Pulsars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.4293","kind":"arxiv","version":3},"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:c019a2dd2bf972510f4555122afedcab8b5e7c7f7f74a20401f24cff0ce8df01","target":"record","created_at":"2026-05-18T01:54:21Z","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":"7b9fb3b8e62faf3331464b3d187cbc963a3aefedb5572253225d6b5fc42d57e4","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-09-19T16:12:07Z","title_canon_sha256":"2f1e2be099f847364dc7f266f26634bfee32c66712eb4b2bbf95f79dbdf63857"},"schema_version":"1.0","source":{"id":"1209.4293","kind":"arxiv","version":3}},"canonical_sha256":"675e7f918022e6aa0d082ced51d4f340d5c739d4e2ddecdfd42b3c4df45b14bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"675e7f918022e6aa0d082ced51d4f340d5c739d4e2ddecdfd42b3c4df45b14bd","first_computed_at":"2026-05-18T01:54:21.022948Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:21.022948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4LqA4kZn7Qj8Dp0uGYhuF2Mnt/p3o4+noycpaHnSmC9AbKMysetshW2D2dxjHQYfiJkCJ4GaYwfZsC2fzq8jBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:21.023383Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.4293","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c019a2dd2bf972510f4555122afedcab8b5e7c7f7f74a20401f24cff0ce8df01","sha256:2665162d2cc80f5496bfb03bd2ae7e1d7225216921b4c3b82cf7dd6b310600eb"],"state_sha256":"9418811ac123fb32a24247fde3342aadf2b445eeab231fc61d4beb3824acd01e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rJ1NPqq+iY+ccTKlE9JFyayAfTIuHEQ4gMfXU2HQVx8XK/dLcaY66Lt8oVR/cCngrM7Rru/TojTmrSbQpN9+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T03:57:30.346680Z","bundle_sha256":"209330e9063046291bd0f4220e3a119b42952b996a8f64ec34e7e73b68283225"}}