{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:3NG4IJ7R6RMXFVJSRNNFOJ2C6C","short_pith_number":"pith:3NG4IJ7R","canonical_record":{"source":{"id":"2606.27852","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-26T08:47:32Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"9f18d5c1e2ccb58e75c4186bd0aacc9db4093d57844b028ecdaebffff7656365","abstract_canon_sha256":"4e027d1d6d7de6be550deda3887f310ff543652cebca40e53564c215e0567f21"},"schema_version":"1.0"},"canonical_sha256":"db4dc427f1f45972d5328b5a572742f08887c029acd607c701e479730beb927f","source":{"kind":"arxiv","id":"2606.27852","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.27852","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"arxiv_version","alias_value":"2606.27852v1","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.27852","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"pith_short_12","alias_value":"3NG4IJ7R6RMX","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"pith_short_16","alias_value":"3NG4IJ7R6RMXFVJS","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"pith_short_8","alias_value":"3NG4IJ7R","created_at":"2026-06-29T01:14:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:3NG4IJ7R6RMXFVJSRNNFOJ2C6C","target":"record","payload":{"canonical_record":{"source":{"id":"2606.27852","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-26T08:47:32Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"9f18d5c1e2ccb58e75c4186bd0aacc9db4093d57844b028ecdaebffff7656365","abstract_canon_sha256":"4e027d1d6d7de6be550deda3887f310ff543652cebca40e53564c215e0567f21"},"schema_version":"1.0"},"canonical_sha256":"db4dc427f1f45972d5328b5a572742f08887c029acd607c701e479730beb927f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-29T01:14:50.363660Z","signature_b64":"O8GkInaitbc1eHU3hKoKnSQfKaiLnk3Tl4ldnnCmoeOR/LbhZRD7kW2nRry96CRAeMVFAkdQX/ClspqYU77rAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"db4dc427f1f45972d5328b5a572742f08887c029acd607c701e479730beb927f","last_reissued_at":"2026-06-29T01:14:50.363178Z","signature_status":"signed_v1","first_computed_at":"2026-06-29T01:14:50.363178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.27852","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":"2026-06-29T01:14:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GFLwOQY2aOTZDKCtyhKJyR7fadKU8xHO7wBbval0B9MAOhgGZ9y8S3ZAEEtRj0e7jkQ4t3YL8ClsPvHEXg75Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T13:42:24.084059Z"},"content_sha256":"d54cb9f785494b9cfa57c10518069b31387a2b9decad04e8065d991a03742af2","schema_version":"1.0","event_id":"sha256:d54cb9f785494b9cfa57c10518069b31387a2b9decad04e8065d991a03742af2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:3NG4IJ7R6RMXFVJSRNNFOJ2C6C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mass-Ratio Reversal as an Alternative to Hierarchical Mergers for GW241011","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Bing Zhang, Rui-Chong Hu, Ying Qin","submitted_at":"2026-06-26T08:47:32Z","abstract_excerpt":"Recent gravitational-wave (GW) observations have revealed binary black hole (BBH) mergers with both extreme mass ratios and large effective spin parameters ($\\chi_{\\rm{eff}}$). GW241011 is a notable example that shows these properties. Although hierarchical mergers (second-generation + first-generation BHs) can naturally produce high spins, they rarely produce such an extreme mass ratio ($\\sim 0.3$), and are further limited by gravitational recoil kicks that can eject the second-generation BH from the host environment. Moreover, recent studies have argued against a dynamical origin for GW24101"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.27852","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/2606.27852/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":"2026-06-29T01:14:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MnOwvED4qeWOmK+FIjnu2l/LA5J8VifuN/7clXW6dOjWfr2j9Vm9itWi33Axd06F1kcDwdUkxSEZ4j2PwFGSCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T13:42:24.084441Z"},"content_sha256":"d9c8a84a0d044ae46210eaf3250068af0e801c8885223e87770b3dc019472baa","schema_version":"1.0","event_id":"sha256:d9c8a84a0d044ae46210eaf3250068af0e801c8885223e87770b3dc019472baa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3NG4IJ7R6RMXFVJSRNNFOJ2C6C/bundle.json","state_url":"https://pith.science/pith/3NG4IJ7R6RMXFVJSRNNFOJ2C6C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3NG4IJ7R6RMXFVJSRNNFOJ2C6C/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":"2026-06-30T13:42:24Z","links":{"resolver":"https://pith.science/pith/3NG4IJ7R6RMXFVJSRNNFOJ2C6C","bundle":"https://pith.science/pith/3NG4IJ7R6RMXFVJSRNNFOJ2C6C/bundle.json","state":"https://pith.science/pith/3NG4IJ7R6RMXFVJSRNNFOJ2C6C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3NG4IJ7R6RMXFVJSRNNFOJ2C6C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:3NG4IJ7R6RMXFVJSRNNFOJ2C6C","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":"4e027d1d6d7de6be550deda3887f310ff543652cebca40e53564c215e0567f21","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-26T08:47:32Z","title_canon_sha256":"9f18d5c1e2ccb58e75c4186bd0aacc9db4093d57844b028ecdaebffff7656365"},"schema_version":"1.0","source":{"id":"2606.27852","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.27852","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"arxiv_version","alias_value":"2606.27852v1","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.27852","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"pith_short_12","alias_value":"3NG4IJ7R6RMX","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"pith_short_16","alias_value":"3NG4IJ7R6RMXFVJS","created_at":"2026-06-29T01:14:50Z"},{"alias_kind":"pith_short_8","alias_value":"3NG4IJ7R","created_at":"2026-06-29T01:14:50Z"}],"graph_snapshots":[{"event_id":"sha256:d9c8a84a0d044ae46210eaf3250068af0e801c8885223e87770b3dc019472baa","target":"graph","created_at":"2026-06-29T01:14:50Z","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/2606.27852/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent gravitational-wave (GW) observations have revealed binary black hole (BBH) mergers with both extreme mass ratios and large effective spin parameters ($\\chi_{\\rm{eff}}$). GW241011 is a notable example that shows these properties. Although hierarchical mergers (second-generation + first-generation BHs) can naturally produce high spins, they rarely produce such an extreme mass ratio ($\\sim 0.3$), and are further limited by gravitational recoil kicks that can eject the second-generation BH from the host environment. Moreover, recent studies have argued against a dynamical origin for GW24101","authors_text":"Bing Zhang, Rui-Chong Hu, Ying Qin","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-26T08:47:32Z","title":"Mass-Ratio Reversal as an Alternative to Hierarchical Mergers for GW241011"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.27852","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:d54cb9f785494b9cfa57c10518069b31387a2b9decad04e8065d991a03742af2","target":"record","created_at":"2026-06-29T01:14:50Z","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":"4e027d1d6d7de6be550deda3887f310ff543652cebca40e53564c215e0567f21","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-26T08:47:32Z","title_canon_sha256":"9f18d5c1e2ccb58e75c4186bd0aacc9db4093d57844b028ecdaebffff7656365"},"schema_version":"1.0","source":{"id":"2606.27852","kind":"arxiv","version":1}},"canonical_sha256":"db4dc427f1f45972d5328b5a572742f08887c029acd607c701e479730beb927f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db4dc427f1f45972d5328b5a572742f08887c029acd607c701e479730beb927f","first_computed_at":"2026-06-29T01:14:50.363178Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-29T01:14:50.363178Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O8GkInaitbc1eHU3hKoKnSQfKaiLnk3Tl4ldnnCmoeOR/LbhZRD7kW2nRry96CRAeMVFAkdQX/ClspqYU77rAw==","signature_status":"signed_v1","signed_at":"2026-06-29T01:14:50.363660Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.27852","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d54cb9f785494b9cfa57c10518069b31387a2b9decad04e8065d991a03742af2","sha256:d9c8a84a0d044ae46210eaf3250068af0e801c8885223e87770b3dc019472baa"],"state_sha256":"72dfdb1be8b5ec57112e9d2dba1fe16d0ead657ed469adf1bc13605bd64a5867"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0B81aQ7H4ZN8L0ee2ZuAqodVla2lSp5FzOIobjkGbKMKi2O3lARnnPORqiXNRdeTlDLxARSOfmnqN7/UhXDAAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T13:42:24.086434Z","bundle_sha256":"4db91c2b19c020ed108a41df642843200ef9d4fba6dc32f53b6747d2aee952aa"}}