{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:MGEL2XRHLSQOHUUCSEF7NOAY2L","short_pith_number":"pith:MGEL2XRH","canonical_record":{"source":{"id":"1209.1438","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-07T02:29:16Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"8922706cbc54627e2353fb63ce96dd8443b5a26d8ae0b8970386c2a3496353c9","abstract_canon_sha256":"2354202e1016b132b0dfc975611ece14a31de7d644e60de84392d5db53476cb2"},"schema_version":"1.0"},"canonical_sha256":"6188bd5e275ca0e3d282910bf6b818d2f221d61c15357ec61a278f4bdb2e1f80","source":{"kind":"arxiv","id":"1209.1438","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.1438","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"arxiv_version","alias_value":"1209.1438v3","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.1438","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"pith_short_12","alias_value":"MGEL2XRHLSQO","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"pith_short_16","alias_value":"MGEL2XRHLSQOHUUC","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"pith_short_8","alias_value":"MGEL2XRH","created_at":"2026-07-05T00:52:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:MGEL2XRHLSQOHUUCSEF7NOAY2L","target":"record","payload":{"canonical_record":{"source":{"id":"1209.1438","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-07T02:29:16Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"8922706cbc54627e2353fb63ce96dd8443b5a26d8ae0b8970386c2a3496353c9","abstract_canon_sha256":"2354202e1016b132b0dfc975611ece14a31de7d644e60de84392d5db53476cb2"},"schema_version":"1.0"},"canonical_sha256":"6188bd5e275ca0e3d282910bf6b818d2f221d61c15357ec61a278f4bdb2e1f80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:52:04.657811Z","signature_b64":"qwqho7Z1n2R1yjr6v9LDHi9hDvD4LMigJMGdiFAr/rcmEMKAeRmYZxPgq4A4CGXy0rQBBDXJK2vVE5R05X5aBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6188bd5e275ca0e3d282910bf6b818d2f221d61c15357ec61a278f4bdb2e1f80","last_reissued_at":"2026-07-05T00:52:04.657376Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:52:04.657376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.1438","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":"2026-07-05T00:52:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zQEp7Ot8dVlP/bKVRd1m7liWtgNccNatn0Aioz74tNEMbvzD2MXv6K/9VHGm0yuu2RFfw0hFal4HlW/Bw2OdDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T20:51:41.395060Z"},"content_sha256":"e81476a1d6cb5a36d239707f29ae096c4c0333f40c2a511d29d8e846051e44dc","schema_version":"1.0","event_id":"sha256:e81476a1d6cb5a36d239707f29ae096c4c0333f40c2a511d29d8e846051e44dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:MGEL2XRHLSQOHUUCSEF7NOAY2L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A New Catalog of Faraday Rotation Measures and Redshifts for Extragalactic Radio Sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Alison M. Hammond, B. M. Gaensler (The University of Sydney), Timothy Robishaw","submitted_at":"2012-09-07T02:29:16Z","abstract_excerpt":"We present a catalog of Faraday rotation measures (RMs) and redshifts for 4003 extragalactic radio sources detected at 1.4 GHz, derived by identifying optical counterparts and spectroscopic redshifts for linearly polarized radio sources from the NRAO VLA Sky Survey. This catalog is more than an order of magnitude larger than any previous sample of RM vs. redshift, and covers the redshift range 0 < z < 5.3 ; the median redshift of the catalog is z = 0.70, and there are more than 1500 sources at redshifts z > 1. For 3650 of these sources at Galactic latitudes |b| >= 20 degrees, we present a seco"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.1438","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1209.1438/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":"2026-07-05T00:52:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L7+ypBl/V16mZY2h4Zqb/JjX7BSeg5YHkskEE1VlDVAjA0k3h00w6deFkfbDyMiJDZvvE1sRn4DHvqU1koWFCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T20:51:41.395562Z"},"content_sha256":"6ec931c1fdb916bd3d6d138a6b83b20ba773f25d4f1096011713446edbc0a8e4","schema_version":"1.0","event_id":"sha256:6ec931c1fdb916bd3d6d138a6b83b20ba773f25d4f1096011713446edbc0a8e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MGEL2XRHLSQOHUUCSEF7NOAY2L/bundle.json","state_url":"https://pith.science/pith/MGEL2XRHLSQOHUUCSEF7NOAY2L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MGEL2XRHLSQOHUUCSEF7NOAY2L/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":"2026-08-05T20:51:41Z","links":{"resolver":"https://pith.science/pith/MGEL2XRHLSQOHUUCSEF7NOAY2L","bundle":"https://pith.science/pith/MGEL2XRHLSQOHUUCSEF7NOAY2L/bundle.json","state":"https://pith.science/pith/MGEL2XRHLSQOHUUCSEF7NOAY2L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MGEL2XRHLSQOHUUCSEF7NOAY2L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MGEL2XRHLSQOHUUCSEF7NOAY2L","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":"2354202e1016b132b0dfc975611ece14a31de7d644e60de84392d5db53476cb2","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-07T02:29:16Z","title_canon_sha256":"8922706cbc54627e2353fb63ce96dd8443b5a26d8ae0b8970386c2a3496353c9"},"schema_version":"1.0","source":{"id":"1209.1438","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.1438","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"arxiv_version","alias_value":"1209.1438v3","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.1438","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"pith_short_12","alias_value":"MGEL2XRHLSQO","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"pith_short_16","alias_value":"MGEL2XRHLSQOHUUC","created_at":"2026-07-05T00:52:04Z"},{"alias_kind":"pith_short_8","alias_value":"MGEL2XRH","created_at":"2026-07-05T00:52:04Z"}],"graph_snapshots":[{"event_id":"sha256:6ec931c1fdb916bd3d6d138a6b83b20ba773f25d4f1096011713446edbc0a8e4","target":"graph","created_at":"2026-07-05T00:52:04Z","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/1209.1438/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a catalog of Faraday rotation measures (RMs) and redshifts for 4003 extragalactic radio sources detected at 1.4 GHz, derived by identifying optical counterparts and spectroscopic redshifts for linearly polarized radio sources from the NRAO VLA Sky Survey. This catalog is more than an order of magnitude larger than any previous sample of RM vs. redshift, and covers the redshift range 0 < z < 5.3 ; the median redshift of the catalog is z = 0.70, and there are more than 1500 sources at redshifts z > 1. For 3650 of these sources at Galactic latitudes |b| >= 20 degrees, we present a seco","authors_text":"Alison M. Hammond, B. M. Gaensler (The University of Sydney), Timothy Robishaw","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-07T02:29:16Z","title":"A New Catalog of Faraday Rotation Measures and Redshifts for Extragalactic Radio Sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.1438","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:e81476a1d6cb5a36d239707f29ae096c4c0333f40c2a511d29d8e846051e44dc","target":"record","created_at":"2026-07-05T00:52:04Z","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":"2354202e1016b132b0dfc975611ece14a31de7d644e60de84392d5db53476cb2","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-07T02:29:16Z","title_canon_sha256":"8922706cbc54627e2353fb63ce96dd8443b5a26d8ae0b8970386c2a3496353c9"},"schema_version":"1.0","source":{"id":"1209.1438","kind":"arxiv","version":3}},"canonical_sha256":"6188bd5e275ca0e3d282910bf6b818d2f221d61c15357ec61a278f4bdb2e1f80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6188bd5e275ca0e3d282910bf6b818d2f221d61c15357ec61a278f4bdb2e1f80","first_computed_at":"2026-07-05T00:52:04.657376Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:52:04.657376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qwqho7Z1n2R1yjr6v9LDHi9hDvD4LMigJMGdiFAr/rcmEMKAeRmYZxPgq4A4CGXy0rQBBDXJK2vVE5R05X5aBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:52:04.657811Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.1438","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e81476a1d6cb5a36d239707f29ae096c4c0333f40c2a511d29d8e846051e44dc","sha256:6ec931c1fdb916bd3d6d138a6b83b20ba773f25d4f1096011713446edbc0a8e4"],"state_sha256":"904add73dab9749073f61520eecdd1624e1f8b635b8f9d2d7c1d74a769f1cc40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WAIQFxtHmpmNw/S/aE8BRf0P2Jsz3XyNmnHs/m3THlThT7ApD1i6Q86EUcv55NHbdj2mfPxSVEBA2zb1PRPvAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T20:51:41.400381Z","bundle_sha256":"e17cbec001004a170e618ee6c200b800765ec292ec67e2bd1db93959b2efef39"}}