{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:EFEPLIQWTCNFJLFZ4SKOA7QOES","short_pith_number":"pith:EFEPLIQW","canonical_record":{"source":{"id":"1512.00991","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-03T08:54:59Z","cross_cats_sorted":[],"title_canon_sha256":"d49fa99d2155f00664bcc22ac4f7318b58bdd588ca459faa58262e0def9242a4","abstract_canon_sha256":"0f6347077592208929037269467280664f159ada21fd6464ab3574796db2722b"},"schema_version":"1.0"},"canonical_sha256":"2148f5a216989a54acb9e494e07e0e24ad0de323b51757a3a11e9f859c0d5954","source":{"kind":"arxiv","id":"1512.00991","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00991","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00991v2","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00991","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"pith_short_12","alias_value":"EFEPLIQWTCNF","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EFEPLIQWTCNFJLFZ","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EFEPLIQW","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:EFEPLIQWTCNFJLFZ4SKOA7QOES","target":"record","payload":{"canonical_record":{"source":{"id":"1512.00991","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-03T08:54:59Z","cross_cats_sorted":[],"title_canon_sha256":"d49fa99d2155f00664bcc22ac4f7318b58bdd588ca459faa58262e0def9242a4","abstract_canon_sha256":"0f6347077592208929037269467280664f159ada21fd6464ab3574796db2722b"},"schema_version":"1.0"},"canonical_sha256":"2148f5a216989a54acb9e494e07e0e24ad0de323b51757a3a11e9f859c0d5954","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:19:25.874338Z","signature_b64":"VV2zAyjDDENanot9CUUrJyLareolpEAYCUBGyaj2liicWfPKsKcd1ONzTvuYSRdPnyZvhkiWIaoGHjBMb1UCCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2148f5a216989a54acb9e494e07e0e24ad0de323b51757a3a11e9f859c0d5954","last_reissued_at":"2026-05-18T01:19:25.873650Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:19:25.873650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.00991","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:19:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lvh8JZBqhmgpid/SbN43xjnTPCONIbfbtXBAFkFjYViLgGqChjb4tqckymCjxATOhFib5LzwQDf7wWKAgiaPDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:23:48.417657Z"},"content_sha256":"85fdc92ee5a50d484b7c17cb7b023e2cf64c250f1fc5ec6b54cbd39f50c2f314","schema_version":"1.0","event_id":"sha256:85fdc92ee5a50d484b7c17cb7b023e2cf64c250f1fc5ec6b54cbd39f50c2f314"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:EFEPLIQWTCNFJLFZ4SKOA7QOES","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Does the intermediate mass black hole in LEDA 87300 (RGG 118) follow the near-quadratic (M_bh)-(M_spheroid) relation?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alister W. Graham, Bogdan C. Ciambur, Roberto Soria","submitted_at":"2015-12-03T08:54:59Z","abstract_excerpt":"The mass scaling relation between supermassive black holes and their host spheroids has previously been described by a quadratic or steeper relation at low masses (10^5 < M_bh/M_sun < 10^7). How this extends into the realm of intermediate mass black holes (10^2 < M_bh/M_sun < 10^5) is not yet clear, although for the barred Sm galaxy LEDA 87300, Baldassare et al. have recently reported a nominal virial mass M_bh=5x10^4 M_sun residing in a `spheroid' of stellar mass equal to 6.3x10^8 M_sun. We point out, for the first time, that LEDA 87300 therefore appears to reside on the near-quadratic M_bh-M"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00991","kind":"arxiv","version":2},"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":"2026-05-18T01:19:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wWobFYBIcuLb4CG06kf7DgD8cqQ4moqAe0nlVv8TeQAunvzlH4acNnb54iwn7RBUF0MXB+uJH4MWA+rd+mA/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:23:48.418049Z"},"content_sha256":"cae4cc36a884e51114c7e059790df2bb73b6c3b4d787988c141ff36a1e4c0d12","schema_version":"1.0","event_id":"sha256:cae4cc36a884e51114c7e059790df2bb73b6c3b4d787988c141ff36a1e4c0d12"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EFEPLIQWTCNFJLFZ4SKOA7QOES/bundle.json","state_url":"https://pith.science/pith/EFEPLIQWTCNFJLFZ4SKOA7QOES/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EFEPLIQWTCNFJLFZ4SKOA7QOES/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":"2026-05-25T07:23:48Z","links":{"resolver":"https://pith.science/pith/EFEPLIQWTCNFJLFZ4SKOA7QOES","bundle":"https://pith.science/pith/EFEPLIQWTCNFJLFZ4SKOA7QOES/bundle.json","state":"https://pith.science/pith/EFEPLIQWTCNFJLFZ4SKOA7QOES/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EFEPLIQWTCNFJLFZ4SKOA7QOES/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:EFEPLIQWTCNFJLFZ4SKOA7QOES","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":"0f6347077592208929037269467280664f159ada21fd6464ab3574796db2722b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-03T08:54:59Z","title_canon_sha256":"d49fa99d2155f00664bcc22ac4f7318b58bdd588ca459faa58262e0def9242a4"},"schema_version":"1.0","source":{"id":"1512.00991","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00991","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00991v2","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00991","created_at":"2026-05-18T01:19:25Z"},{"alias_kind":"pith_short_12","alias_value":"EFEPLIQWTCNF","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EFEPLIQWTCNFJLFZ","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EFEPLIQW","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:cae4cc36a884e51114c7e059790df2bb73b6c3b4d787988c141ff36a1e4c0d12","target":"graph","created_at":"2026-05-18T01:19:25Z","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":"The mass scaling relation between supermassive black holes and their host spheroids has previously been described by a quadratic or steeper relation at low masses (10^5 < M_bh/M_sun < 10^7). How this extends into the realm of intermediate mass black holes (10^2 < M_bh/M_sun < 10^5) is not yet clear, although for the barred Sm galaxy LEDA 87300, Baldassare et al. have recently reported a nominal virial mass M_bh=5x10^4 M_sun residing in a `spheroid' of stellar mass equal to 6.3x10^8 M_sun. We point out, for the first time, that LEDA 87300 therefore appears to reside on the near-quadratic M_bh-M","authors_text":"Alister W. Graham, Bogdan C. Ciambur, Roberto Soria","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-03T08:54:59Z","title":"Does the intermediate mass black hole in LEDA 87300 (RGG 118) follow the near-quadratic (M_bh)-(M_spheroid) relation?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00991","kind":"arxiv","version":2},"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":"sha256:85fdc92ee5a50d484b7c17cb7b023e2cf64c250f1fc5ec6b54cbd39f50c2f314","target":"record","created_at":"2026-05-18T01:19:25Z","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":"0f6347077592208929037269467280664f159ada21fd6464ab3574796db2722b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-03T08:54:59Z","title_canon_sha256":"d49fa99d2155f00664bcc22ac4f7318b58bdd588ca459faa58262e0def9242a4"},"schema_version":"1.0","source":{"id":"1512.00991","kind":"arxiv","version":2}},"canonical_sha256":"2148f5a216989a54acb9e494e07e0e24ad0de323b51757a3a11e9f859c0d5954","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2148f5a216989a54acb9e494e07e0e24ad0de323b51757a3a11e9f859c0d5954","first_computed_at":"2026-05-18T01:19:25.873650Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:25.873650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VV2zAyjDDENanot9CUUrJyLareolpEAYCUBGyaj2liicWfPKsKcd1ONzTvuYSRdPnyZvhkiWIaoGHjBMb1UCCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:25.874338Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.00991","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85fdc92ee5a50d484b7c17cb7b023e2cf64c250f1fc5ec6b54cbd39f50c2f314","sha256:cae4cc36a884e51114c7e059790df2bb73b6c3b4d787988c141ff36a1e4c0d12"],"state_sha256":"33510d8603e6c65dd05b462d109c8f04b4f59f421a3cc2b55ae8cd13319929da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WnUyrlobwU8k6COPIRB6cBtATFerdvj47syua8CTARyeGMI2kDtaYaBKSvNWOHb09lOrMn/Uclx+MObm30+tBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T07:23:48.420246Z","bundle_sha256":"bd50abaf227b03254c566c1a3ae5c38d9bdf840b12b833674954227ec1d55a63"}}