{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:Z7TH3VR4D5JCL334GI45SE7A4O","short_pith_number":"pith:Z7TH3VR4","canonical_record":{"source":{"id":"1808.09243","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-28T12:05:35Z","cross_cats_sorted":[],"title_canon_sha256":"bc4d2d0f09dfddb282722fb2b24fb9314f8bd2a18a01ec12ab5651568294210e","abstract_canon_sha256":"a3793e759a1b502ee57b582cb7a7befe9c3b3cc7d6c93231fa4d3c8b760efc5d"},"schema_version":"1.0"},"canonical_sha256":"cfe67dd63c1f5225ef7c3239d913e0e3af136c14bf3389bdca738a359f0836a6","source":{"kind":"arxiv","id":"1808.09243","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09243","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09243v1","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09243","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"pith_short_12","alias_value":"Z7TH3VR4D5JC","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"Z7TH3VR4D5JCL334","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"Z7TH3VR4","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:Z7TH3VR4D5JCL334GI45SE7A4O","target":"record","payload":{"canonical_record":{"source":{"id":"1808.09243","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-28T12:05:35Z","cross_cats_sorted":[],"title_canon_sha256":"bc4d2d0f09dfddb282722fb2b24fb9314f8bd2a18a01ec12ab5651568294210e","abstract_canon_sha256":"a3793e759a1b502ee57b582cb7a7befe9c3b3cc7d6c93231fa4d3c8b760efc5d"},"schema_version":"1.0"},"canonical_sha256":"cfe67dd63c1f5225ef7c3239d913e0e3af136c14bf3389bdca738a359f0836a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:43.532235Z","signature_b64":"CL/+GcAV+4wzZDgDixvIKHuSXFE44wAlA9UWH5/4FjOVG7Uy0qBa6EpTM32hcxeXLrqKIsgnJ3ceKCocaADwAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cfe67dd63c1f5225ef7c3239d913e0e3af136c14bf3389bdca738a359f0836a6","last_reissued_at":"2026-05-17T23:54:43.531618Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:43.531618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.09243","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":"2026-05-17T23:54:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WXmOSFN8cJyM2O8SZXTmXU7yY8GL4MXiaitbyovQ1FVhanGDNGjQRKiL8abgo9p5wpLjI+RPcHNlAeNb9/FkAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:13:51.557156Z"},"content_sha256":"4e453645379697869d39a6266c9bd99a780898ce5a0e0f51fac0bbc7bef91c2a","schema_version":"1.0","event_id":"sha256:4e453645379697869d39a6266c9bd99a780898ce5a0e0f51fac0bbc7bef91c2a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:Z7TH3VR4D5JCL334GI45SE7A4O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Global millimeter VLBI array survey of ultracompact extragalactic radio sources at 86 GHz","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andrei P. Lobanov, Dhanya G. Nair, Eduardo Ros, Florent Mertens, J. Anton Zensus, Michael Bremer, Michael Lindqvist, Pablo de Vicente, Sang-Sung Lee, Thomas P. Krichbaum, Yoshiaki Hagiwara, Yuri Y. Kovalev","submitted_at":"2018-08-28T12:05:35Z","abstract_excerpt":"(abridged) Very long baseline interferometry (VLBI) observations at 86$\\,$GHz (wavelength, $\\lambda = 3\\,$mm) reach a resolution of about 50 $\\mu$as, probing the collimation and acceleration regions of relativistic outflows in active galactic nuclei. To extend the statistical studies of compact extragalactic jets, a large global 86 GHz VLBI survey of 162 radio sources was conducted in 2010-2011 using the Global Millimeter VLBI Array. The survey data attained a typical baseline sensitivity of 0.1 Jy and a typical image sensitivity of 5 mJy/beam, providing successful detections and images for al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09243","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":"2026-05-17T23:54:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZTXu/P8UrWT4j0aq+0xvH37FPfpv0O/UBS75eUL4cfKS5Cy+PyVh/FqYDxLscBrSIQ4UMIZM7jGhlfTjBes+BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:13:51.557555Z"},"content_sha256":"5955796d5879476a6ec47a45cf06752b547939b681fc69a73ea442723a78d4e2","schema_version":"1.0","event_id":"sha256:5955796d5879476a6ec47a45cf06752b547939b681fc69a73ea442723a78d4e2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z7TH3VR4D5JCL334GI45SE7A4O/bundle.json","state_url":"https://pith.science/pith/Z7TH3VR4D5JCL334GI45SE7A4O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z7TH3VR4D5JCL334GI45SE7A4O/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":"2026-05-26T18:13:51Z","links":{"resolver":"https://pith.science/pith/Z7TH3VR4D5JCL334GI45SE7A4O","bundle":"https://pith.science/pith/Z7TH3VR4D5JCL334GI45SE7A4O/bundle.json","state":"https://pith.science/pith/Z7TH3VR4D5JCL334GI45SE7A4O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z7TH3VR4D5JCL334GI45SE7A4O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:Z7TH3VR4D5JCL334GI45SE7A4O","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":"a3793e759a1b502ee57b582cb7a7befe9c3b3cc7d6c93231fa4d3c8b760efc5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-28T12:05:35Z","title_canon_sha256":"bc4d2d0f09dfddb282722fb2b24fb9314f8bd2a18a01ec12ab5651568294210e"},"schema_version":"1.0","source":{"id":"1808.09243","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09243","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09243v1","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09243","created_at":"2026-05-17T23:54:43Z"},{"alias_kind":"pith_short_12","alias_value":"Z7TH3VR4D5JC","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"Z7TH3VR4D5JCL334","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"Z7TH3VR4","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:5955796d5879476a6ec47a45cf06752b547939b681fc69a73ea442723a78d4e2","target":"graph","created_at":"2026-05-17T23:54:43Z","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":"(abridged) Very long baseline interferometry (VLBI) observations at 86$\\,$GHz (wavelength, $\\lambda = 3\\,$mm) reach a resolution of about 50 $\\mu$as, probing the collimation and acceleration regions of relativistic outflows in active galactic nuclei. To extend the statistical studies of compact extragalactic jets, a large global 86 GHz VLBI survey of 162 radio sources was conducted in 2010-2011 using the Global Millimeter VLBI Array. The survey data attained a typical baseline sensitivity of 0.1 Jy and a typical image sensitivity of 5 mJy/beam, providing successful detections and images for al","authors_text":"Andrei P. Lobanov, Dhanya G. Nair, Eduardo Ros, Florent Mertens, J. Anton Zensus, Michael Bremer, Michael Lindqvist, Pablo de Vicente, Sang-Sung Lee, Thomas P. Krichbaum, Yoshiaki Hagiwara, Yuri Y. Kovalev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-28T12:05:35Z","title":"Global millimeter VLBI array survey of ultracompact extragalactic radio sources at 86 GHz"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09243","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":"sha256:4e453645379697869d39a6266c9bd99a780898ce5a0e0f51fac0bbc7bef91c2a","target":"record","created_at":"2026-05-17T23:54:43Z","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":"a3793e759a1b502ee57b582cb7a7befe9c3b3cc7d6c93231fa4d3c8b760efc5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-08-28T12:05:35Z","title_canon_sha256":"bc4d2d0f09dfddb282722fb2b24fb9314f8bd2a18a01ec12ab5651568294210e"},"schema_version":"1.0","source":{"id":"1808.09243","kind":"arxiv","version":1}},"canonical_sha256":"cfe67dd63c1f5225ef7c3239d913e0e3af136c14bf3389bdca738a359f0836a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cfe67dd63c1f5225ef7c3239d913e0e3af136c14bf3389bdca738a359f0836a6","first_computed_at":"2026-05-17T23:54:43.531618Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:43.531618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CL/+GcAV+4wzZDgDixvIKHuSXFE44wAlA9UWH5/4FjOVG7Uy0qBa6EpTM32hcxeXLrqKIsgnJ3ceKCocaADwAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:43.532235Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.09243","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e453645379697869d39a6266c9bd99a780898ce5a0e0f51fac0bbc7bef91c2a","sha256:5955796d5879476a6ec47a45cf06752b547939b681fc69a73ea442723a78d4e2"],"state_sha256":"bd68d64fd91aed36a707be94db15757c585745a4f89f3dac8ac3d28c616e3a77"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rmTQoYLGqfsJpssK2t/7dCzvcUG3LeRoWEnR9/554Tuhlk8f3H1OBVK4K8KNqWJmmkx5HQsdveyQqPtRWK8iBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:13:51.560101Z","bundle_sha256":"253fe5e1aa9e4c146d61d3c2efe1cea9251da005f985d47cb1c02dfd703803c4"}}