{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:BJMAK33ELVANPMBAYSZJRTTWIX","short_pith_number":"pith:BJMAK33E","canonical_record":{"source":{"id":"2106.13819","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-06-25T18:00:12Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"660fbec51f8a931ff00c1ec095bfa6d17a2b88b886d2505e307ec7bc8f51a0ba","abstract_canon_sha256":"f1c9f389eff8f6741b106c0d686b07173c112907479eace148505a0c69dea7f9"},"schema_version":"1.0"},"canonical_sha256":"0a58056f645d40d7b020c4b298ce7645e563b50e6a0bd04eb4b43290793c7624","source":{"kind":"arxiv","id":"2106.13819","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.13819","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"arxiv_version","alias_value":"2106.13819v2","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.13819","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"pith_short_12","alias_value":"BJMAK33ELVAN","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"BJMAK33ELVANPMBA","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"BJMAK33E","created_at":"2026-07-05T03:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:BJMAK33ELVANPMBAYSZJRTTWIX","target":"record","payload":{"canonical_record":{"source":{"id":"2106.13819","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-06-25T18:00:12Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"660fbec51f8a931ff00c1ec095bfa6d17a2b88b886d2505e307ec7bc8f51a0ba","abstract_canon_sha256":"f1c9f389eff8f6741b106c0d686b07173c112907479eace148505a0c69dea7f9"},"schema_version":"1.0"},"canonical_sha256":"0a58056f645d40d7b020c4b298ce7645e563b50e6a0bd04eb4b43290793c7624","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:28:19.677933Z","signature_b64":"xft2g4n6EXvkzQiwtF97W9U9eT+RuTL3BDp75IEwDcQGWWk6BEm+8iWqEKKEPUcYmQ6cXhVj0pp9wcucy3fKAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0a58056f645d40d7b020c4b298ce7645e563b50e6a0bd04eb4b43290793c7624","last_reissued_at":"2026-07-05T03:28:19.677482Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:28:19.677482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.13819","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":"2026-07-05T03:28:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XSBg48uzYha32UwEweDBQKwoDSIbLf6TlNtcwl8v5IxCoXnymNLfzAkW8BE2OGeZyEVT0sFt7s0OgkLgu74ECA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T04:42:57.952417Z"},"content_sha256":"03a33794003c0ac88c974f3dbf1be6b32f469b1182c8a45e63b906f03abcfeca","schema_version":"1.0","event_id":"sha256:03a33794003c0ac88c974f3dbf1be6b32f469b1182c8a45e63b906f03abcfeca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:BJMAK33ELVANPMBAYSZJRTTWIX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discriminating between different scenarios for the formation and evolution of massive black holes with LISA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"gr-qc","authors_text":"Alexandre Toubiana, Emanuele Berti, Enrico Barausse, Jonathan R. Gair, Kaze W.K. Wong, Stanislav Babak, Stephen R. Taylor, Sylvain Marsat","submitted_at":"2021-06-25T18:00:12Z","abstract_excerpt":"Electromagnetic observations have provided strong evidence for the existence of massive black holes in the center of galaxies, but their origin is still poorly known. Different scenarios for the formation and evolution of massive black holes lead to different predictions for their properties and merger rates. LISA observations of coalescing massive black hole binaries could be used to reverse engineer the problem and shed light on these mechanisms. In this paper, we introduce a pipeline based on hierarchical Bayesian inference to infer the mixing fraction between different theoretical models b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.13819","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2106.13819/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":"2026-07-05T03:28:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yycv0tenvocZ/LfaX4ZFgLoEbIbR+eHCg6XKAWJPqCwhdVV2ol8Nzj/Vp7GE6u8UrPWz7rleSsoukbRcsXk7CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T04:42:57.952801Z"},"content_sha256":"d4cbb77a5208a5a611835d96f916a4f90c68a2a8815af13eca0b529aba510757","schema_version":"1.0","event_id":"sha256:d4cbb77a5208a5a611835d96f916a4f90c68a2a8815af13eca0b529aba510757"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BJMAK33ELVANPMBAYSZJRTTWIX/bundle.json","state_url":"https://pith.science/pith/BJMAK33ELVANPMBAYSZJRTTWIX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BJMAK33ELVANPMBAYSZJRTTWIX/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":"2026-07-17T04:42:57Z","links":{"resolver":"https://pith.science/pith/BJMAK33ELVANPMBAYSZJRTTWIX","bundle":"https://pith.science/pith/BJMAK33ELVANPMBAYSZJRTTWIX/bundle.json","state":"https://pith.science/pith/BJMAK33ELVANPMBAYSZJRTTWIX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BJMAK33ELVANPMBAYSZJRTTWIX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:BJMAK33ELVANPMBAYSZJRTTWIX","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":"f1c9f389eff8f6741b106c0d686b07173c112907479eace148505a0c69dea7f9","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-06-25T18:00:12Z","title_canon_sha256":"660fbec51f8a931ff00c1ec095bfa6d17a2b88b886d2505e307ec7bc8f51a0ba"},"schema_version":"1.0","source":{"id":"2106.13819","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.13819","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"arxiv_version","alias_value":"2106.13819v2","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.13819","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"pith_short_12","alias_value":"BJMAK33ELVAN","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"BJMAK33ELVANPMBA","created_at":"2026-07-05T03:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"BJMAK33E","created_at":"2026-07-05T03:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:d4cbb77a5208a5a611835d96f916a4f90c68a2a8815af13eca0b529aba510757","target":"graph","created_at":"2026-07-05T03:28:19Z","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/2106.13819/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Electromagnetic observations have provided strong evidence for the existence of massive black holes in the center of galaxies, but their origin is still poorly known. Different scenarios for the formation and evolution of massive black holes lead to different predictions for their properties and merger rates. LISA observations of coalescing massive black hole binaries could be used to reverse engineer the problem and shed light on these mechanisms. In this paper, we introduce a pipeline based on hierarchical Bayesian inference to infer the mixing fraction between different theoretical models b","authors_text":"Alexandre Toubiana, Emanuele Berti, Enrico Barausse, Jonathan R. Gair, Kaze W.K. Wong, Stanislav Babak, Stephen R. Taylor, Sylvain Marsat","cross_cats":["astro-ph.GA","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-06-25T18:00:12Z","title":"Discriminating between different scenarios for the formation and evolution of massive black holes with LISA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.13819","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":"sha256:03a33794003c0ac88c974f3dbf1be6b32f469b1182c8a45e63b906f03abcfeca","target":"record","created_at":"2026-07-05T03:28:19Z","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":"f1c9f389eff8f6741b106c0d686b07173c112907479eace148505a0c69dea7f9","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-06-25T18:00:12Z","title_canon_sha256":"660fbec51f8a931ff00c1ec095bfa6d17a2b88b886d2505e307ec7bc8f51a0ba"},"schema_version":"1.0","source":{"id":"2106.13819","kind":"arxiv","version":2}},"canonical_sha256":"0a58056f645d40d7b020c4b298ce7645e563b50e6a0bd04eb4b43290793c7624","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0a58056f645d40d7b020c4b298ce7645e563b50e6a0bd04eb4b43290793c7624","first_computed_at":"2026-07-05T03:28:19.677482Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:28:19.677482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xft2g4n6EXvkzQiwtF97W9U9eT+RuTL3BDp75IEwDcQGWWk6BEm+8iWqEKKEPUcYmQ6cXhVj0pp9wcucy3fKAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:28:19.677933Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.13819","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03a33794003c0ac88c974f3dbf1be6b32f469b1182c8a45e63b906f03abcfeca","sha256:d4cbb77a5208a5a611835d96f916a4f90c68a2a8815af13eca0b529aba510757"],"state_sha256":"fb7fe375c05d64f1e2b5b3eeb49534489090be110337d25db479897708ca2db7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UCPG45anafHe88qNkP0zEsB1KGw9B2d4V3qCwxvyegTElvBlBfEY4XnotCioZX17AHjR8EOS1JGjvqFCTw7OCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T04:42:57.955266Z","bundle_sha256":"f89c60c02697f221bd4ce604d40667cd583c0420149134a6488bb7b7dab22ceb"}}