{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:3T35VVZR2Z65BTSYEA7QAXRD62","short_pith_number":"pith:3T35VVZR","canonical_record":{"source":{"id":"2205.16006","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-05-31T17:59:51Z","cross_cats_sorted":[],"title_canon_sha256":"399dd584ff283ad534653697be8108c04996f7f7ded520b9eb36a31f7664f4b7","abstract_canon_sha256":"9c882e295ecc1c98908c8138b70bd3a300c0a606927b5afb7e1b00f96f7c68a9"},"schema_version":"1.0"},"canonical_sha256":"dcf7dad731d67dd0ce58203f005e23f68c9f5a3e4adb8522bab527721f85ca32","source":{"kind":"arxiv","id":"2205.16006","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.16006","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"arxiv_version","alias_value":"2205.16006v1","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.16006","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"pith_short_12","alias_value":"3T35VVZR2Z65","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"pith_short_16","alias_value":"3T35VVZR2Z65BTSY","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"pith_short_8","alias_value":"3T35VVZR","created_at":"2026-07-05T04:41:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:3T35VVZR2Z65BTSYEA7QAXRD62","target":"record","payload":{"canonical_record":{"source":{"id":"2205.16006","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-05-31T17:59:51Z","cross_cats_sorted":[],"title_canon_sha256":"399dd584ff283ad534653697be8108c04996f7f7ded520b9eb36a31f7664f4b7","abstract_canon_sha256":"9c882e295ecc1c98908c8138b70bd3a300c0a606927b5afb7e1b00f96f7c68a9"},"schema_version":"1.0"},"canonical_sha256":"dcf7dad731d67dd0ce58203f005e23f68c9f5a3e4adb8522bab527721f85ca32","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:41:43.124869Z","signature_b64":"m/SRqNTwpolzIEBAZamMft10ufNOC77r6qHAlvFQ2E6hAYBPUF3MdfZUYVgPpw8+pyzu+e5nzg07IM//skATCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dcf7dad731d67dd0ce58203f005e23f68c9f5a3e4adb8522bab527721f85ca32","last_reissued_at":"2026-07-05T04:41:43.124510Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:41:43.124510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2205.16006","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":"2026-07-05T04:41:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0uQS/90Ct8yps2Yf4+u4M+2/eNLNuOgqkJ80rncsJBYsSKZl4c2DGcIAl4sOIIFzAu5zpAY4z68njhDK1ot0Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T05:11:47.960938Z"},"content_sha256":"a0c568fb72c8cc018fe722a484617108e5d1d5a01253ff12cd1952e525a606d9","schema_version":"1.0","event_id":"sha256:a0c568fb72c8cc018fe722a484617108e5d1d5a01253ff12cd1952e525a606d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:3T35VVZR2Z65BTSYEA7QAXRD62","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Wandering Black Hole Candidates in Dwarf Galaxies at VLBI Resolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexander J. van der Horst, Amy E. Reines, Andrew J. Sargent, Jenny E. Greene, Jeremy Darling, Megan C. Johnson, Nathan J. Secrest, Phil J. Cigan","submitted_at":"2022-05-31T17:59:51Z","abstract_excerpt":"Thirteen dwarf galaxies have recently been found to host radio-selected accreting massive black hole (MBH) candidates, some of which are ``wandering\" in the outskirts of their hosts. We present 9 GHz Very Long Baseline Array (VLBA) observations of these sources at milliarcsecond resolution. Our observations have beam solid angles ${\\sim}10^4$ times smaller than the previous Very Large Array (VLA) observations at 9 GHz, with comparable point source sensitivities. We detect milliarcsecond-scale radio sources at the positions of the four VLA sources most distant from the photo-centers of their as"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.16006","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2205.16006/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":"2026-07-05T04:41:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ibxDy9Mn+a+yc16g/j8ocg8lURosz993h/bpRxdBA1Mp4dHnPibl9yHZPgxVdHBYV9kcrtrXT6AmEKonbckgAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T05:11:47.961280Z"},"content_sha256":"a18561391d4b11328ac36fe335575e9b2439c315fc06d114ef60f2c7a6311ab9","schema_version":"1.0","event_id":"sha256:a18561391d4b11328ac36fe335575e9b2439c315fc06d114ef60f2c7a6311ab9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3T35VVZR2Z65BTSYEA7QAXRD62/bundle.json","state_url":"https://pith.science/pith/3T35VVZR2Z65BTSYEA7QAXRD62/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3T35VVZR2Z65BTSYEA7QAXRD62/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":"2026-08-01T05:11:47Z","links":{"resolver":"https://pith.science/pith/3T35VVZR2Z65BTSYEA7QAXRD62","bundle":"https://pith.science/pith/3T35VVZR2Z65BTSYEA7QAXRD62/bundle.json","state":"https://pith.science/pith/3T35VVZR2Z65BTSYEA7QAXRD62/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3T35VVZR2Z65BTSYEA7QAXRD62/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:3T35VVZR2Z65BTSYEA7QAXRD62","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":"9c882e295ecc1c98908c8138b70bd3a300c0a606927b5afb7e1b00f96f7c68a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-05-31T17:59:51Z","title_canon_sha256":"399dd584ff283ad534653697be8108c04996f7f7ded520b9eb36a31f7664f4b7"},"schema_version":"1.0","source":{"id":"2205.16006","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.16006","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"arxiv_version","alias_value":"2205.16006v1","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.16006","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"pith_short_12","alias_value":"3T35VVZR2Z65","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"pith_short_16","alias_value":"3T35VVZR2Z65BTSY","created_at":"2026-07-05T04:41:43Z"},{"alias_kind":"pith_short_8","alias_value":"3T35VVZR","created_at":"2026-07-05T04:41:43Z"}],"graph_snapshots":[{"event_id":"sha256:a18561391d4b11328ac36fe335575e9b2439c315fc06d114ef60f2c7a6311ab9","target":"graph","created_at":"2026-07-05T04:41:43Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2205.16006/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Thirteen dwarf galaxies have recently been found to host radio-selected accreting massive black hole (MBH) candidates, some of which are ``wandering\" in the outskirts of their hosts. We present 9 GHz Very Long Baseline Array (VLBA) observations of these sources at milliarcsecond resolution. Our observations have beam solid angles ${\\sim}10^4$ times smaller than the previous Very Large Array (VLA) observations at 9 GHz, with comparable point source sensitivities. We detect milliarcsecond-scale radio sources at the positions of the four VLA sources most distant from the photo-centers of their as","authors_text":"Alexander J. van der Horst, Amy E. Reines, Andrew J. Sargent, Jenny E. Greene, Jeremy Darling, Megan C. Johnson, Nathan J. Secrest, Phil J. Cigan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-05-31T17:59:51Z","title":"Wandering Black Hole Candidates in Dwarf Galaxies at VLBI Resolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.16006","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:a0c568fb72c8cc018fe722a484617108e5d1d5a01253ff12cd1952e525a606d9","target":"record","created_at":"2026-07-05T04:41:43Z","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":"9c882e295ecc1c98908c8138b70bd3a300c0a606927b5afb7e1b00f96f7c68a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-05-31T17:59:51Z","title_canon_sha256":"399dd584ff283ad534653697be8108c04996f7f7ded520b9eb36a31f7664f4b7"},"schema_version":"1.0","source":{"id":"2205.16006","kind":"arxiv","version":1}},"canonical_sha256":"dcf7dad731d67dd0ce58203f005e23f68c9f5a3e4adb8522bab527721f85ca32","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dcf7dad731d67dd0ce58203f005e23f68c9f5a3e4adb8522bab527721f85ca32","first_computed_at":"2026-07-05T04:41:43.124510Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:41:43.124510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m/SRqNTwpolzIEBAZamMft10ufNOC77r6qHAlvFQ2E6hAYBPUF3MdfZUYVgPpw8+pyzu+e5nzg07IM//skATCg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:41:43.124869Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.16006","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0c568fb72c8cc018fe722a484617108e5d1d5a01253ff12cd1952e525a606d9","sha256:a18561391d4b11328ac36fe335575e9b2439c315fc06d114ef60f2c7a6311ab9"],"state_sha256":"b3129390ddde88d5ba08b9df1d7786817ce8c78df72614f0f6c8a5320607cc6d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5W1387Wzi91CV7OKSZiwgrj7lecNm+gWE4iNm72WxpjMetkHe1BZr3mjbvdz87iuAIaOyy+OWuYQTvkMKpiKCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T05:11:47.963411Z","bundle_sha256":"41c2a8449a7b99fe0447c0e571839eed2b16ffbe7102601edaf4470b6ef6e524"}}