{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:KPANHVS5XNFT5LYREYB2DWISAZ","short_pith_number":"pith:KPANHVS5","canonical_record":{"source":{"id":"1712.00023","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-30T19:00:05Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"393848414c334bf017cdab99db173fe90655ca07676beb8fabb8c2be472d56a9","abstract_canon_sha256":"20fcb50ac14321cbe92625cb3893fa082aaacbc543f5cb4202a1cec8b5dcc03c"},"schema_version":"1.0"},"canonical_sha256":"53c0d3d65dbb4b3eaf112603a1d912066afc08845201fb641e46ddad84e54d80","source":{"kind":"arxiv","id":"1712.00023","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.00023","created_at":"2026-05-18T00:17:42Z"},{"alias_kind":"arxiv_version","alias_value":"1712.00023v2","created_at":"2026-05-18T00:17:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.00023","created_at":"2026-05-18T00:17:42Z"},{"alias_kind":"pith_short_12","alias_value":"KPANHVS5XNFT","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"KPANHVS5XNFT5LYR","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"KPANHVS5","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:KPANHVS5XNFT5LYREYB2DWISAZ","target":"record","payload":{"canonical_record":{"source":{"id":"1712.00023","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-30T19:00:05Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"393848414c334bf017cdab99db173fe90655ca07676beb8fabb8c2be472d56a9","abstract_canon_sha256":"20fcb50ac14321cbe92625cb3893fa082aaacbc543f5cb4202a1cec8b5dcc03c"},"schema_version":"1.0"},"canonical_sha256":"53c0d3d65dbb4b3eaf112603a1d912066afc08845201fb641e46ddad84e54d80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:42.055637Z","signature_b64":"guAV6QYOhlZeFSRV1da3jOH/6gpqGYh1DkSGkE5/suEL1c+HH1Lm/EV+OpYXr8I4KJ73Rb6igmTk8JIFwecqDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"53c0d3d65dbb4b3eaf112603a1d912066afc08845201fb641e46ddad84e54d80","last_reissued_at":"2026-05-18T00:17:42.054993Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:42.054993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.00023","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":"2026-05-18T00:17:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HR8ikMbSAVZP/QGXbxwwpDoXNX/FTB/o0zIIShJFthxmA6wC12KLnWr4w5N076v333V33eZ4pzPswFtGOPwFDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:09:17.137944Z"},"content_sha256":"75cbbdcdb534596e7fcf5ce3813763726934848b41c445d91498522379958853","schema_version":"1.0","event_id":"sha256:75cbbdcdb534596e7fcf5ce3813763726934848b41c445d91498522379958853"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:KPANHVS5XNFT5LYREYB2DWISAZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Galactic nuclei evolution with spinning black holes: method and implementation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"2), (2) Kavli Institute for Cosmology, Davide Fiacconi (1, Debora Sijacki (1, J. E. Pringle (1) ((1) Institute of Astronomy, University of Cambridge, University of Cambridge)","submitted_at":"2017-11-30T19:00:05Z","abstract_excerpt":"Supermassive black holes at the centre of galactic nuclei mostly grow in mass through gas accretion over cosmic time. This process also modifies the angular momentum (or spin) of black holes, both in magnitude and in orientation. Despite being often neglected in galaxy formation simulations, spin plays a crucial role in modulating accretion power, driving jet feedback, and determining recoil velocity of coalescing black hole binaries. We present a new accretion model for the moving-mesh code {\\sc arepo} that incorporates (i) mass accretion through a thin $\\alpha$-disc, and (ii) spin evolution "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.00023","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":"2026-05-18T00:17:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nlLUvn6UfAXrRlf0taAVk6PrXFDLqF8E8FaP66Nvjobn2/5FeKTS0N7eIiAoMNemunGLXyVfKhV845Fr2N0sBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:09:17.138704Z"},"content_sha256":"0d1beffe97cef841ce319a5325d4e50b5d2981c65a77199ad39f30a564f8f03b","schema_version":"1.0","event_id":"sha256:0d1beffe97cef841ce319a5325d4e50b5d2981c65a77199ad39f30a564f8f03b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KPANHVS5XNFT5LYREYB2DWISAZ/bundle.json","state_url":"https://pith.science/pith/KPANHVS5XNFT5LYREYB2DWISAZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KPANHVS5XNFT5LYREYB2DWISAZ/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":"2026-05-31T21:09:17Z","links":{"resolver":"https://pith.science/pith/KPANHVS5XNFT5LYREYB2DWISAZ","bundle":"https://pith.science/pith/KPANHVS5XNFT5LYREYB2DWISAZ/bundle.json","state":"https://pith.science/pith/KPANHVS5XNFT5LYREYB2DWISAZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KPANHVS5XNFT5LYREYB2DWISAZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:KPANHVS5XNFT5LYREYB2DWISAZ","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":"20fcb50ac14321cbe92625cb3893fa082aaacbc543f5cb4202a1cec8b5dcc03c","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-30T19:00:05Z","title_canon_sha256":"393848414c334bf017cdab99db173fe90655ca07676beb8fabb8c2be472d56a9"},"schema_version":"1.0","source":{"id":"1712.00023","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.00023","created_at":"2026-05-18T00:17:42Z"},{"alias_kind":"arxiv_version","alias_value":"1712.00023v2","created_at":"2026-05-18T00:17:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.00023","created_at":"2026-05-18T00:17:42Z"},{"alias_kind":"pith_short_12","alias_value":"KPANHVS5XNFT","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"KPANHVS5XNFT5LYR","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"KPANHVS5","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:0d1beffe97cef841ce319a5325d4e50b5d2981c65a77199ad39f30a564f8f03b","target":"graph","created_at":"2026-05-18T00:17:42Z","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":"Supermassive black holes at the centre of galactic nuclei mostly grow in mass through gas accretion over cosmic time. This process also modifies the angular momentum (or spin) of black holes, both in magnitude and in orientation. Despite being often neglected in galaxy formation simulations, spin plays a crucial role in modulating accretion power, driving jet feedback, and determining recoil velocity of coalescing black hole binaries. We present a new accretion model for the moving-mesh code {\\sc arepo} that incorporates (i) mass accretion through a thin $\\alpha$-disc, and (ii) spin evolution ","authors_text":"2), (2) Kavli Institute for Cosmology, Davide Fiacconi (1, Debora Sijacki (1, J. E. Pringle (1) ((1) Institute of Astronomy, University of Cambridge, University of Cambridge)","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-30T19:00:05Z","title":"Galactic nuclei evolution with spinning black holes: method and implementation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.00023","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":"sha256:75cbbdcdb534596e7fcf5ce3813763726934848b41c445d91498522379958853","target":"record","created_at":"2026-05-18T00:17:42Z","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":"20fcb50ac14321cbe92625cb3893fa082aaacbc543f5cb4202a1cec8b5dcc03c","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-11-30T19:00:05Z","title_canon_sha256":"393848414c334bf017cdab99db173fe90655ca07676beb8fabb8c2be472d56a9"},"schema_version":"1.0","source":{"id":"1712.00023","kind":"arxiv","version":2}},"canonical_sha256":"53c0d3d65dbb4b3eaf112603a1d912066afc08845201fb641e46ddad84e54d80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"53c0d3d65dbb4b3eaf112603a1d912066afc08845201fb641e46ddad84e54d80","first_computed_at":"2026-05-18T00:17:42.054993Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:42.054993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"guAV6QYOhlZeFSRV1da3jOH/6gpqGYh1DkSGkE5/suEL1c+HH1Lm/EV+OpYXr8I4KJ73Rb6igmTk8JIFwecqDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:42.055637Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.00023","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75cbbdcdb534596e7fcf5ce3813763726934848b41c445d91498522379958853","sha256:0d1beffe97cef841ce319a5325d4e50b5d2981c65a77199ad39f30a564f8f03b"],"state_sha256":"5932caa503e442f8f5a19473b61e23957170a2950d15834a54b29540bd54b2d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HH+jFlUtG1EXSJvPQL8Q31yEDadXDOrugejEYVdBARw1qPfiyW4cscZ1eWBdLVB6cVXwrfzUUD7d1CImQFPODQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T21:09:17.142438Z","bundle_sha256":"8bf03eab8c48e38078301c09b0e9f34703e868c545ea8e95f4bd3e6ae18c2ead"}}