{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:PY3QK2LYAEHU7XPVHADW2BN75O","short_pith_number":"pith:PY3QK2LY","canonical_record":{"source":{"id":"1210.2128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-08T01:30:05Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"1ddca6be36e519a269bc100f210ad3a4d4623c46293e88c2112d83fa86dda87f","abstract_canon_sha256":"4f40605c7a7536bb0bbed197c1888da394b39436b0fd6af212e8728961b15945"},"schema_version":"1.0"},"canonical_sha256":"7e37056978010f4fddf538076d05bfebb94df0ea076857f173415024db0943ad","source":{"kind":"arxiv","id":"1210.2128","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2128","created_at":"2026-05-18T01:54:04Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2128v1","created_at":"2026-05-18T01:54:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2128","created_at":"2026-05-18T01:54:04Z"},{"alias_kind":"pith_short_12","alias_value":"PY3QK2LYAEHU","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PY3QK2LYAEHU7XPV","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PY3QK2LY","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:PY3QK2LYAEHU7XPVHADW2BN75O","target":"record","payload":{"canonical_record":{"source":{"id":"1210.2128","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-08T01:30:05Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"1ddca6be36e519a269bc100f210ad3a4d4623c46293e88c2112d83fa86dda87f","abstract_canon_sha256":"4f40605c7a7536bb0bbed197c1888da394b39436b0fd6af212e8728961b15945"},"schema_version":"1.0"},"canonical_sha256":"7e37056978010f4fddf538076d05bfebb94df0ea076857f173415024db0943ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:04.809748Z","signature_b64":"SGXFglJ81sEcvo7MOTXk3msi5GE2bPwTLbinNF4fGqAio0oLXjFKB0pVABnibWp4z2YmDvmppBhbKuDxiRgnCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e37056978010f4fddf538076d05bfebb94df0ea076857f173415024db0943ad","last_reissued_at":"2026-05-18T01:54:04.809284Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:04.809284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.2128","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":"2026-05-18T01:54:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Og8GKU1JIwoP3omtiG4ircLtdibBksEfX3tqDROMJ4SGuMSo7YwfvPN6dqvH4/Y+3uzSlNnMl7RV2HF4CV/WAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:53:10.009546Z"},"content_sha256":"9dc8434d05ba03142af1ee9622ce5757195f8e171ea0722dc11da0f2f9e6776f","schema_version":"1.0","event_id":"sha256:9dc8434d05ba03142af1ee9622ce5757195f8e171ea0722dc11da0f2f9e6776f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:PY3QK2LYAEHU7XPVHADW2BN75O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for Highly Relativistic Velocities in the Kiloparsec-Scale Jet of the Quasar 3C\\,345","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"David H. Roberts, John F. C. Wardle","submitted_at":"2012-10-08T01:30:05Z","abstract_excerpt":"In this paper we use radio polarimetric observations of the jet of the nearby bright quasar 3C\\,345 to estimate the fluid velocity on kiloparsec scales. The jet is highly polarized, and surprisingly, the electric vector position angles in the jet are ``twisted'' with respect to the jet axis. Simple models of magnetized jets are investigated in order to study various possible origins of the electric vector distribution. In a cylindrically-symmetric transparent jet a helical magnetic field will appear either transverse or longitudinal due to partial cancellations of Stokes parameters between the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2128","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":"2026-05-18T01:54:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1eQrd8ZnMwxGIU4wJasDDgF6lJX3cEXT4NowOWs+tWasQkgOQhXgAYwEj9y2R2aaZUZ5mUXYqBAPSCfugZx4CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:53:10.009894Z"},"content_sha256":"1890302384a6435c3abadb6a62a88580f88d83c73c0f0134bb194a598cfefcda","schema_version":"1.0","event_id":"sha256:1890302384a6435c3abadb6a62a88580f88d83c73c0f0134bb194a598cfefcda"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PY3QK2LYAEHU7XPVHADW2BN75O/bundle.json","state_url":"https://pith.science/pith/PY3QK2LYAEHU7XPVHADW2BN75O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PY3QK2LYAEHU7XPVHADW2BN75O/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":"2026-06-03T07:53:10Z","links":{"resolver":"https://pith.science/pith/PY3QK2LYAEHU7XPVHADW2BN75O","bundle":"https://pith.science/pith/PY3QK2LYAEHU7XPVHADW2BN75O/bundle.json","state":"https://pith.science/pith/PY3QK2LYAEHU7XPVHADW2BN75O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PY3QK2LYAEHU7XPVHADW2BN75O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PY3QK2LYAEHU7XPVHADW2BN75O","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":"4f40605c7a7536bb0bbed197c1888da394b39436b0fd6af212e8728961b15945","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-08T01:30:05Z","title_canon_sha256":"1ddca6be36e519a269bc100f210ad3a4d4623c46293e88c2112d83fa86dda87f"},"schema_version":"1.0","source":{"id":"1210.2128","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.2128","created_at":"2026-05-18T01:54:04Z"},{"alias_kind":"arxiv_version","alias_value":"1210.2128v1","created_at":"2026-05-18T01:54:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.2128","created_at":"2026-05-18T01:54:04Z"},{"alias_kind":"pith_short_12","alias_value":"PY3QK2LYAEHU","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PY3QK2LYAEHU7XPV","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PY3QK2LY","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:1890302384a6435c3abadb6a62a88580f88d83c73c0f0134bb194a598cfefcda","target":"graph","created_at":"2026-05-18T01:54:04Z","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"},"paper":{"abstract_excerpt":"In this paper we use radio polarimetric observations of the jet of the nearby bright quasar 3C\\,345 to estimate the fluid velocity on kiloparsec scales. The jet is highly polarized, and surprisingly, the electric vector position angles in the jet are ``twisted'' with respect to the jet axis. Simple models of magnetized jets are investigated in order to study various possible origins of the electric vector distribution. In a cylindrically-symmetric transparent jet a helical magnetic field will appear either transverse or longitudinal due to partial cancellations of Stokes parameters between the","authors_text":"David H. Roberts, John F. C. Wardle","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-08T01:30:05Z","title":"Evidence for Highly Relativistic Velocities in the Kiloparsec-Scale Jet of the Quasar 3C\\,345"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.2128","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":"sha256:9dc8434d05ba03142af1ee9622ce5757195f8e171ea0722dc11da0f2f9e6776f","target":"record","created_at":"2026-05-18T01:54:04Z","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":"4f40605c7a7536bb0bbed197c1888da394b39436b0fd6af212e8728961b15945","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-10-08T01:30:05Z","title_canon_sha256":"1ddca6be36e519a269bc100f210ad3a4d4623c46293e88c2112d83fa86dda87f"},"schema_version":"1.0","source":{"id":"1210.2128","kind":"arxiv","version":1}},"canonical_sha256":"7e37056978010f4fddf538076d05bfebb94df0ea076857f173415024db0943ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e37056978010f4fddf538076d05bfebb94df0ea076857f173415024db0943ad","first_computed_at":"2026-05-18T01:54:04.809284Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:04.809284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SGXFglJ81sEcvo7MOTXk3msi5GE2bPwTLbinNF4fGqAio0oLXjFKB0pVABnibWp4z2YmDvmppBhbKuDxiRgnCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:04.809748Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.2128","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9dc8434d05ba03142af1ee9622ce5757195f8e171ea0722dc11da0f2f9e6776f","sha256:1890302384a6435c3abadb6a62a88580f88d83c73c0f0134bb194a598cfefcda"],"state_sha256":"fc97b7080a11094ed83305147daa64b74f8ae855a5b487e8ad5b06b29303028a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qIH0CBtZv0vH705SqDR3+wdGT7/YNucdj0k5DZv1vCtsg+y+T4jeRmdP/nWGO5hzOKfoC1NBIpXwCn6iDNO8AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T07:53:10.011906Z","bundle_sha256":"f8a79fa763ea74858c90cb7b5dc96befc4457bc7f4151fe35485164eaa569bc6"}}