{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:E66PY767B4FRMGON72FA3A7VYR","short_pith_number":"pith:E66PY767","canonical_record":{"source":{"id":"2502.15468","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T13:47:56Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"title_canon_sha256":"61d85580632b8f9c66208dd8f3c69f7664876b84fecb7fd8e9081dfcfc70615d","abstract_canon_sha256":"02aa73038b461870332db108a6f435e78ac599760d5352beabb30c6b886176e0"},"schema_version":"1.0"},"canonical_sha256":"27bcfc7fdf0f0b1619cdfe8a0d83f5c45472d5ad6767b060dc3f0ef294336908","source":{"kind":"arxiv","id":"2502.15468","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.15468","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"arxiv_version","alias_value":"2502.15468v2","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.15468","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"pith_short_12","alias_value":"E66PY767B4FR","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"pith_short_16","alias_value":"E66PY767B4FRMGON","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"pith_short_8","alias_value":"E66PY767","created_at":"2026-07-05T11:46:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:E66PY767B4FRMGON72FA3A7VYR","target":"record","payload":{"canonical_record":{"source":{"id":"2502.15468","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T13:47:56Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"title_canon_sha256":"61d85580632b8f9c66208dd8f3c69f7664876b84fecb7fd8e9081dfcfc70615d","abstract_canon_sha256":"02aa73038b461870332db108a6f435e78ac599760d5352beabb30c6b886176e0"},"schema_version":"1.0"},"canonical_sha256":"27bcfc7fdf0f0b1619cdfe8a0d83f5c45472d5ad6767b060dc3f0ef294336908","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:46:21.010988Z","signature_b64":"Tj/VIp0h2my85mvdjQsbBtoJdfa42sg8xnLsXZl7aHZe7W+9rsbGHf7XlwbKWyt+hgS9REwlr1qTAzapIFS1Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27bcfc7fdf0f0b1619cdfe8a0d83f5c45472d5ad6767b060dc3f0ef294336908","last_reissued_at":"2026-07-05T11:46:21.010500Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:46:21.010500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.15468","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":"2026-07-05T11:46:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7fgu804hpL/joWY4cgsODrwEbVYOkkMHwk61w5W+l3V3baIf4H5F6G0PXOS4g1WCMf2Zg8To7W/4OsjhgRWwAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T19:10:50.751467Z"},"content_sha256":"656915690ac575dae7c8e8c0179e09ea12496824c51166a66a59ce44c2afc79d","schema_version":"1.0","event_id":"sha256:656915690ac575dae7c8e8c0179e09ea12496824c51166a66a59ce44c2afc79d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:E66PY767B4FRMGON72FA3A7VYR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-messenger detection of black hole binaries in dark matter spikes","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Fani Dosopoulou, Joseph Silk","submitted_at":"2025-02-21T13:47:56Z","abstract_excerpt":"We investigate the inspiral of a high mass-ratio black hole binary located in the nucleus of a galaxy, where the primary central black hole is surrounded by a dense dark matter spike formed through accretion during the black hole growth phase. Within this spike, dark matter undergoes strong self-annihilation, producing a compact source of $\\gamma$-ray radiation that is highly sensitive to spike density, while the binary emits gravitational waves at frequencies detectable by LISA. As the inspiralling binary interacts with the surrounding dark matter particles, it alters the density of the spike"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.15468","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/2502.15468/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":"2026-07-05T11:46:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KjdsnTJeQvNIgb3YFxX7sHV8k4v5l+2GVBg4pDDiIdQA44Ig/rIoGOfvlndouZiR1KFEu06mNu6ErseM8NzQCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T19:10:50.751849Z"},"content_sha256":"d9ead6e00e147407e74874fcee632d685cce3b1d729ea38a988219a94586a103","schema_version":"1.0","event_id":"sha256:d9ead6e00e147407e74874fcee632d685cce3b1d729ea38a988219a94586a103"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E66PY767B4FRMGON72FA3A7VYR/bundle.json","state_url":"https://pith.science/pith/E66PY767B4FRMGON72FA3A7VYR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E66PY767B4FRMGON72FA3A7VYR/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":"2026-08-04T19:10:50Z","links":{"resolver":"https://pith.science/pith/E66PY767B4FRMGON72FA3A7VYR","bundle":"https://pith.science/pith/E66PY767B4FRMGON72FA3A7VYR/bundle.json","state":"https://pith.science/pith/E66PY767B4FRMGON72FA3A7VYR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E66PY767B4FRMGON72FA3A7VYR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:E66PY767B4FRMGON72FA3A7VYR","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":"02aa73038b461870332db108a6f435e78ac599760d5352beabb30c6b886176e0","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T13:47:56Z","title_canon_sha256":"61d85580632b8f9c66208dd8f3c69f7664876b84fecb7fd8e9081dfcfc70615d"},"schema_version":"1.0","source":{"id":"2502.15468","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.15468","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"arxiv_version","alias_value":"2502.15468v2","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.15468","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"pith_short_12","alias_value":"E66PY767B4FR","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"pith_short_16","alias_value":"E66PY767B4FRMGON","created_at":"2026-07-05T11:46:21Z"},{"alias_kind":"pith_short_8","alias_value":"E66PY767","created_at":"2026-07-05T11:46:21Z"}],"graph_snapshots":[{"event_id":"sha256:d9ead6e00e147407e74874fcee632d685cce3b1d729ea38a988219a94586a103","target":"graph","created_at":"2026-07-05T11:46:21Z","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/2502.15468/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the inspiral of a high mass-ratio black hole binary located in the nucleus of a galaxy, where the primary central black hole is surrounded by a dense dark matter spike formed through accretion during the black hole growth phase. Within this spike, dark matter undergoes strong self-annihilation, producing a compact source of $\\gamma$-ray radiation that is highly sensitive to spike density, while the binary emits gravitational waves at frequencies detectable by LISA. As the inspiralling binary interacts with the surrounding dark matter particles, it alters the density of the spike","authors_text":"Fani Dosopoulou, Joseph Silk","cross_cats":["astro-ph.CO","astro-ph.GA"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T13:47:56Z","title":"Multi-messenger detection of black hole binaries in dark matter spikes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.15468","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":"sha256:656915690ac575dae7c8e8c0179e09ea12496824c51166a66a59ce44c2afc79d","target":"record","created_at":"2026-07-05T11:46:21Z","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":"02aa73038b461870332db108a6f435e78ac599760d5352beabb30c6b886176e0","cross_cats_sorted":["astro-ph.CO","astro-ph.GA"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-02-21T13:47:56Z","title_canon_sha256":"61d85580632b8f9c66208dd8f3c69f7664876b84fecb7fd8e9081dfcfc70615d"},"schema_version":"1.0","source":{"id":"2502.15468","kind":"arxiv","version":2}},"canonical_sha256":"27bcfc7fdf0f0b1619cdfe8a0d83f5c45472d5ad6767b060dc3f0ef294336908","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27bcfc7fdf0f0b1619cdfe8a0d83f5c45472d5ad6767b060dc3f0ef294336908","first_computed_at":"2026-07-05T11:46:21.010500Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:46:21.010500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Tj/VIp0h2my85mvdjQsbBtoJdfa42sg8xnLsXZl7aHZe7W+9rsbGHf7XlwbKWyt+hgS9REwlr1qTAzapIFS1Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:46:21.010988Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.15468","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:656915690ac575dae7c8e8c0179e09ea12496824c51166a66a59ce44c2afc79d","sha256:d9ead6e00e147407e74874fcee632d685cce3b1d729ea38a988219a94586a103"],"state_sha256":"73e7939f754f00585d874f4af621517b8bae19a7622c9e38301530b2e09c2c6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6ysTv6PrYAxsLJXMH3SQxLzRr37R9QPOkecgMy1rNaD0XDEb7TidDKyQIWVW2zmCaWk8etEnM6QBfdinyPHYBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T19:10:50.755821Z","bundle_sha256":"a60d165aeb76e3083bd9351ea5e63f93de90ae3dc2bd25cfb3aab72a8d05a844"}}