{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:GZCEMFOXSMUFVJ3VAV3B4U5PJY","short_pith_number":"pith:GZCEMFOX","canonical_record":{"source":{"id":"1503.04540","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-16T07:03:43Z","cross_cats_sorted":[],"title_canon_sha256":"4e6f637b9e104df59cd482f74b835ff8d3f9c16e7211561e6143c8bd1057db1f","abstract_canon_sha256":"3dbc4f8e622a12eb0b252bfe5da71c91ad692b170ca1dee8b1727cd098d9094f"},"schema_version":"1.0"},"canonical_sha256":"36444615d793285aa77505761e53af4e10e1c4abbf3d20ee83cb503d218c084a","source":{"kind":"arxiv","id":"1503.04540","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.04540","created_at":"2026-05-18T02:17:11Z"},{"alias_kind":"arxiv_version","alias_value":"1503.04540v2","created_at":"2026-05-18T02:17:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.04540","created_at":"2026-05-18T02:17:11Z"},{"alias_kind":"pith_short_12","alias_value":"GZCEMFOXSMUF","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GZCEMFOXSMUFVJ3V","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GZCEMFOX","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:GZCEMFOXSMUFVJ3VAV3B4U5PJY","target":"record","payload":{"canonical_record":{"source":{"id":"1503.04540","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-16T07:03:43Z","cross_cats_sorted":[],"title_canon_sha256":"4e6f637b9e104df59cd482f74b835ff8d3f9c16e7211561e6143c8bd1057db1f","abstract_canon_sha256":"3dbc4f8e622a12eb0b252bfe5da71c91ad692b170ca1dee8b1727cd098d9094f"},"schema_version":"1.0"},"canonical_sha256":"36444615d793285aa77505761e53af4e10e1c4abbf3d20ee83cb503d218c084a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:11.037383Z","signature_b64":"wt47ouq3clXn+wmV69Vw3lNB10PJPrWSe1TNYqXGXwxpbqOYnVCXMeTUfiB+teiPSOjC9rmJFwSvd14wNYxGAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"36444615d793285aa77505761e53af4e10e1c4abbf3d20ee83cb503d218c084a","last_reissued_at":"2026-05-18T02:17:11.036691Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:11.036691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.04540","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":"2026-05-18T02:17:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TbfW2SXDHmSE7tDLK+uauJbBz0xsdTzacOGqwt2ER0m8N7QKv/9BvheAJld3JR2RwpyBVCMdgeLEXYLF2DVyDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T09:10:42.315704Z"},"content_sha256":"57bfedf9913ce73a73baad728f88f590f761ff5df63b2e59f18aa393fff9c391","schema_version":"1.0","event_id":"sha256:57bfedf9913ce73a73baad728f88f590f761ff5df63b2e59f18aa393fff9c391"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:GZCEMFOXSMUFVJ3VAV3B4U5PJY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The benchmark black hole in NGC 4258: dynamical models from high-resolution two-dimensional stellar kinematics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Daniel Alf Drehmer, Fabricio Ferrari, Michele Cappellari, Rogemar A. Riffel, Thaisa Storchi Bergmann","submitted_at":"2015-03-16T07:03:43Z","abstract_excerpt":"NGC 4258 is the galaxy with the most accurate (maser-based) determination for the mass of the supermassive black hole (SMBH) in its nucleus. In this work we present a two-dimensional mapping of the stellar kinematics in the inner 3.0 x 3.0 arcsec = 100 x 100 pc of NGC 4258 using adaptative-optics observations obtained with the Near-Infrared Integral Field Spectrograph of the GEMINI North telescope at a 0.11 arcsec (4 pc) angular resolution. The observations resolve the radius of influence of the SMBH, revealing an abrupt increase in the stellar velocity dispersion within 10 pc from the nucleus"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.04540","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":"2026-05-18T02:17:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P+thecbG13x5wLnrtqPK93O8P6Jut7tov7LpkUGhE8+QoqGoCHw1YC9jEs8n8Ei2AuuHpmhmTWRX7FAsGyHTAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T09:10:42.316446Z"},"content_sha256":"916fd2f3b22327c3942aaf449b9cf5314bff8655c09c7aa705ed78a560e4e2ed","schema_version":"1.0","event_id":"sha256:916fd2f3b22327c3942aaf449b9cf5314bff8655c09c7aa705ed78a560e4e2ed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GZCEMFOXSMUFVJ3VAV3B4U5PJY/bundle.json","state_url":"https://pith.science/pith/GZCEMFOXSMUFVJ3VAV3B4U5PJY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GZCEMFOXSMUFVJ3VAV3B4U5PJY/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":"2026-06-09T09:10:42Z","links":{"resolver":"https://pith.science/pith/GZCEMFOXSMUFVJ3VAV3B4U5PJY","bundle":"https://pith.science/pith/GZCEMFOXSMUFVJ3VAV3B4U5PJY/bundle.json","state":"https://pith.science/pith/GZCEMFOXSMUFVJ3VAV3B4U5PJY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GZCEMFOXSMUFVJ3VAV3B4U5PJY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GZCEMFOXSMUFVJ3VAV3B4U5PJY","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":"3dbc4f8e622a12eb0b252bfe5da71c91ad692b170ca1dee8b1727cd098d9094f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-16T07:03:43Z","title_canon_sha256":"4e6f637b9e104df59cd482f74b835ff8d3f9c16e7211561e6143c8bd1057db1f"},"schema_version":"1.0","source":{"id":"1503.04540","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.04540","created_at":"2026-05-18T02:17:11Z"},{"alias_kind":"arxiv_version","alias_value":"1503.04540v2","created_at":"2026-05-18T02:17:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.04540","created_at":"2026-05-18T02:17:11Z"},{"alias_kind":"pith_short_12","alias_value":"GZCEMFOXSMUF","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GZCEMFOXSMUFVJ3V","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GZCEMFOX","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:916fd2f3b22327c3942aaf449b9cf5314bff8655c09c7aa705ed78a560e4e2ed","target":"graph","created_at":"2026-05-18T02:17:11Z","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":"NGC 4258 is the galaxy with the most accurate (maser-based) determination for the mass of the supermassive black hole (SMBH) in its nucleus. In this work we present a two-dimensional mapping of the stellar kinematics in the inner 3.0 x 3.0 arcsec = 100 x 100 pc of NGC 4258 using adaptative-optics observations obtained with the Near-Infrared Integral Field Spectrograph of the GEMINI North telescope at a 0.11 arcsec (4 pc) angular resolution. The observations resolve the radius of influence of the SMBH, revealing an abrupt increase in the stellar velocity dispersion within 10 pc from the nucleus","authors_text":"Daniel Alf Drehmer, Fabricio Ferrari, Michele Cappellari, Rogemar A. Riffel, Thaisa Storchi Bergmann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-16T07:03:43Z","title":"The benchmark black hole in NGC 4258: dynamical models from high-resolution two-dimensional stellar kinematics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.04540","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":"sha256:57bfedf9913ce73a73baad728f88f590f761ff5df63b2e59f18aa393fff9c391","target":"record","created_at":"2026-05-18T02:17:11Z","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":"3dbc4f8e622a12eb0b252bfe5da71c91ad692b170ca1dee8b1727cd098d9094f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-16T07:03:43Z","title_canon_sha256":"4e6f637b9e104df59cd482f74b835ff8d3f9c16e7211561e6143c8bd1057db1f"},"schema_version":"1.0","source":{"id":"1503.04540","kind":"arxiv","version":2}},"canonical_sha256":"36444615d793285aa77505761e53af4e10e1c4abbf3d20ee83cb503d218c084a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"36444615d793285aa77505761e53af4e10e1c4abbf3d20ee83cb503d218c084a","first_computed_at":"2026-05-18T02:17:11.036691Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:11.036691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wt47ouq3clXn+wmV69Vw3lNB10PJPrWSe1TNYqXGXwxpbqOYnVCXMeTUfiB+teiPSOjC9rmJFwSvd14wNYxGAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:11.037383Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.04540","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57bfedf9913ce73a73baad728f88f590f761ff5df63b2e59f18aa393fff9c391","sha256:916fd2f3b22327c3942aaf449b9cf5314bff8655c09c7aa705ed78a560e4e2ed"],"state_sha256":"398fe909c2d1e83c716533bc0dd9e323c5f3748d0ab252cbdb3b76cedefd2ece"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mtLrIMJ+xxR95XTdiMSgI6kRJFO1AgXyvBwrbFu7Jb5kYSaEW+N+wFVm+2m5qshMuKt7tcOo6YcPsv/Z/g0JBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T09:10:42.320454Z","bundle_sha256":"b095a5ffaeede7308dac14881a22e88e471374d24075459d7425c310a4cb9654"}}