{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:FT3XJ7S4L3RNYVIIOFNU2RQJFP","short_pith_number":"pith:FT3XJ7S4","canonical_record":{"source":{"id":"1907.12585","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-29T18:08:20Z","cross_cats_sorted":[],"title_canon_sha256":"3dc4a08fa183a353434c0b8e815980409d11149e0fa3a8bd11dd2272786bb0b4","abstract_canon_sha256":"786d153650493679612a1e893db9abd932cf275dc0bfd474616dde4d6e1f7bce"},"schema_version":"1.0"},"canonical_sha256":"2cf774fe5c5ee2dc5508715b4d46092bdc10bc716941882da5b239d3f96d003a","source":{"kind":"arxiv","id":"1907.12585","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.12585","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"arxiv_version","alias_value":"1907.12585v1","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.12585","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"pith_short_12","alias_value":"FT3XJ7S4L3RN","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"pith_short_16","alias_value":"FT3XJ7S4L3RNYVII","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"pith_short_8","alias_value":"FT3XJ7S4","created_at":"2026-07-05T04:34:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:FT3XJ7S4L3RNYVIIOFNU2RQJFP","target":"record","payload":{"canonical_record":{"source":{"id":"1907.12585","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-29T18:08:20Z","cross_cats_sorted":[],"title_canon_sha256":"3dc4a08fa183a353434c0b8e815980409d11149e0fa3a8bd11dd2272786bb0b4","abstract_canon_sha256":"786d153650493679612a1e893db9abd932cf275dc0bfd474616dde4d6e1f7bce"},"schema_version":"1.0"},"canonical_sha256":"2cf774fe5c5ee2dc5508715b4d46092bdc10bc716941882da5b239d3f96d003a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:34:10.972857Z","signature_b64":"efoHf62RAI4liJwkTQkEiz+aJrymd/1w4+oHjTTaVU6IZDZ52XsuEMdbD3fvDFLwvQ92YCrxj/LE9wHza9UpAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cf774fe5c5ee2dc5508715b4d46092bdc10bc716941882da5b239d3f96d003a","last_reissued_at":"2026-07-05T04:34:10.972384Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:34:10.972384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.12585","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":"2026-07-05T04:34:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mMGHl9kKIlJrrZzmBJDw2kzIyoNqfxcZysDZvNBWo+oWa1nguoauHfXYlqGA6H5hYI+BY3QpK3FBRuVDRul+Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T22:41:35.102032Z"},"content_sha256":"b9f509aded5f73d6bf95cee9533a4a82f7791698aac85168bb81a315f6880528","schema_version":"1.0","event_id":"sha256:b9f509aded5f73d6bf95cee9533a4a82f7791698aac85168bb81a315f6880528"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:FT3XJ7S4L3RNYVIIOFNU2RQJFP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An X-ray + Radio Search for Massive Black Holes in Blue Compact Dwarf Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Amy E. Reines, James J. Condon, Lilikoi J. Latimer, Richard M. Plotkin, Thomas D. Russell","submitted_at":"2019-07-29T18:08:20Z","abstract_excerpt":"Nearby blue compact dwarf (BCD) galaxies are arguably our best local analogues of galaxies in the earlier Universe that may host relics of black hole (BH) seeds. Here we present high-resolution Chandra X-ray Observatory and Karl G. Jansky Very Large Array (VLA) observations of five nearby BCDs with stellar masses of less than the Small Magellanic Cloud ($M_\\star \\sim 10^{7} - 10^{8.4}$ $M_\\odot$). We search for signatures of accreting massive BHs at X-ray and radio wavelengths, which are more sensitive to lower BH accretion rates than optical searches. We detect a total of 10 hard X-ray source"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.12585","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/1907.12585/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":"2026-07-05T04:34:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9EVx6To8qzb9fni7vAYMh6q1sepHVYY6vvrD5iEkUCC/YN00Em/Soyc0LpzbBUC20Ri04GXaaI3vZvRNFbxGBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T22:41:35.102416Z"},"content_sha256":"e7a86ce0f6d3eb6410f2701564d5893d8e48a7991cacf3f3c84fbef279a96c15","schema_version":"1.0","event_id":"sha256:e7a86ce0f6d3eb6410f2701564d5893d8e48a7991cacf3f3c84fbef279a96c15"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FT3XJ7S4L3RNYVIIOFNU2RQJFP/bundle.json","state_url":"https://pith.science/pith/FT3XJ7S4L3RNYVIIOFNU2RQJFP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FT3XJ7S4L3RNYVIIOFNU2RQJFP/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":"2026-07-18T22:41:35Z","links":{"resolver":"https://pith.science/pith/FT3XJ7S4L3RNYVIIOFNU2RQJFP","bundle":"https://pith.science/pith/FT3XJ7S4L3RNYVIIOFNU2RQJFP/bundle.json","state":"https://pith.science/pith/FT3XJ7S4L3RNYVIIOFNU2RQJFP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FT3XJ7S4L3RNYVIIOFNU2RQJFP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FT3XJ7S4L3RNYVIIOFNU2RQJFP","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":"786d153650493679612a1e893db9abd932cf275dc0bfd474616dde4d6e1f7bce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-29T18:08:20Z","title_canon_sha256":"3dc4a08fa183a353434c0b8e815980409d11149e0fa3a8bd11dd2272786bb0b4"},"schema_version":"1.0","source":{"id":"1907.12585","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.12585","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"arxiv_version","alias_value":"1907.12585v1","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.12585","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"pith_short_12","alias_value":"FT3XJ7S4L3RN","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"pith_short_16","alias_value":"FT3XJ7S4L3RNYVII","created_at":"2026-07-05T04:34:10Z"},{"alias_kind":"pith_short_8","alias_value":"FT3XJ7S4","created_at":"2026-07-05T04:34:10Z"}],"graph_snapshots":[{"event_id":"sha256:e7a86ce0f6d3eb6410f2701564d5893d8e48a7991cacf3f3c84fbef279a96c15","target":"graph","created_at":"2026-07-05T04:34:10Z","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/1907.12585/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nearby blue compact dwarf (BCD) galaxies are arguably our best local analogues of galaxies in the earlier Universe that may host relics of black hole (BH) seeds. Here we present high-resolution Chandra X-ray Observatory and Karl G. Jansky Very Large Array (VLA) observations of five nearby BCDs with stellar masses of less than the Small Magellanic Cloud ($M_\\star \\sim 10^{7} - 10^{8.4}$ $M_\\odot$). We search for signatures of accreting massive BHs at X-ray and radio wavelengths, which are more sensitive to lower BH accretion rates than optical searches. We detect a total of 10 hard X-ray source","authors_text":"Amy E. Reines, James J. Condon, Lilikoi J. Latimer, Richard M. Plotkin, Thomas D. Russell","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-29T18:08:20Z","title":"An X-ray + Radio Search for Massive Black Holes in Blue Compact Dwarf Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.12585","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:b9f509aded5f73d6bf95cee9533a4a82f7791698aac85168bb81a315f6880528","target":"record","created_at":"2026-07-05T04:34:10Z","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":"786d153650493679612a1e893db9abd932cf275dc0bfd474616dde4d6e1f7bce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-29T18:08:20Z","title_canon_sha256":"3dc4a08fa183a353434c0b8e815980409d11149e0fa3a8bd11dd2272786bb0b4"},"schema_version":"1.0","source":{"id":"1907.12585","kind":"arxiv","version":1}},"canonical_sha256":"2cf774fe5c5ee2dc5508715b4d46092bdc10bc716941882da5b239d3f96d003a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2cf774fe5c5ee2dc5508715b4d46092bdc10bc716941882da5b239d3f96d003a","first_computed_at":"2026-07-05T04:34:10.972384Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:34:10.972384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"efoHf62RAI4liJwkTQkEiz+aJrymd/1w4+oHjTTaVU6IZDZ52XsuEMdbD3fvDFLwvQ92YCrxj/LE9wHza9UpAA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:34:10.972857Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.12585","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9f509aded5f73d6bf95cee9533a4a82f7791698aac85168bb81a315f6880528","sha256:e7a86ce0f6d3eb6410f2701564d5893d8e48a7991cacf3f3c84fbef279a96c15"],"state_sha256":"125229ade1bf7ad49dc7bff9d3067b836727b6768b4927c45bdbedab40af9cb2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jnUj5Lk/lBc90nZCMi1jWzEQXw6Y0uOFWS1CmMngxa5utYyy4Dn2cE1XcdJKHu2vkLMQWZlpRJIueJWR/BEgAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-18T22:41:35.105048Z","bundle_sha256":"ce7672d0c5027f00a6eb5e23a39243491e6b2ee193efe0bee12ef84078597331"}}