{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Z4NEE2SQA2MIYUHHCUFPNG7JCQ","short_pith_number":"pith:Z4NEE2SQ","canonical_record":{"source":{"id":"2102.06215","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-02-11T19:00:07Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"eb9e8cefe3182dff1ebc54190f4d60bf96d32eef96ac2b9725abe9b9a634475b","abstract_canon_sha256":"ecdd976e52fab5f446aaa8d68938125426f55175011e638fa41b47f831885bd1"},"schema_version":"1.0"},"canonical_sha256":"cf1a426a5006988c50e7150af69be914164b06bb952c21a7295812f25ed84cf4","source":{"kind":"arxiv","id":"2102.06215","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.06215","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"arxiv_version","alias_value":"2102.06215v2","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.06215","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"pith_short_12","alias_value":"Z4NEE2SQA2MI","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"pith_short_16","alias_value":"Z4NEE2SQA2MIYUHH","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"pith_short_8","alias_value":"Z4NEE2SQ","created_at":"2026-07-05T02:42:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Z4NEE2SQA2MIYUHHCUFPNG7JCQ","target":"record","payload":{"canonical_record":{"source":{"id":"2102.06215","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-02-11T19:00:07Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"eb9e8cefe3182dff1ebc54190f4d60bf96d32eef96ac2b9725abe9b9a634475b","abstract_canon_sha256":"ecdd976e52fab5f446aaa8d68938125426f55175011e638fa41b47f831885bd1"},"schema_version":"1.0"},"canonical_sha256":"cf1a426a5006988c50e7150af69be914164b06bb952c21a7295812f25ed84cf4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:42:03.827154Z","signature_b64":"RRWfDSEJ55WDPhEpIKLBJkVK0JscU34m+CxfybHYbdvFOFsmfOSu6jp7fs/Vu3Lrku8drQV7T9j0BMxFb4XEBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf1a426a5006988c50e7150af69be914164b06bb952c21a7295812f25ed84cf4","last_reissued_at":"2026-07-05T02:42:03.826708Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:42:03.826708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.06215","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":"2026-07-05T02:42:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ToZQieZgpbuMVwONSd7PgZcQPGVKHFK2boz18zkK7DmN2aDrFORMwvZpCMooij8weIApqlBmutqKzyy3U34qBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:36:43.619768Z"},"content_sha256":"7ba4eae61ab0bcca3b9aabf556714613ae46cacd22d33ae7e29b8eccfafb4825","schema_version":"1.0","event_id":"sha256:7ba4eae61ab0bcca3b9aabf556714613ae46cacd22d33ae7e29b8eccfafb4825"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Z4NEE2SQA2MIYUHHCUFPNG7JCQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Cosmological Evolution of Self-interacting Dark Matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Daniel Egana-Ugrinovic, Daniel Gift, Marilena Loverde, Rouven Essig","submitted_at":"2021-02-11T19:00:07Z","abstract_excerpt":"We study the evolution of cosmological perturbations in dark-matter models with elastic and velocity-independent self interactions. Such interactions are imprinted in the matter-power spectrum as dark acoustic oscillations, which can be experimentally explored to determine the strength of the self scatterings. Models with self interactions have similarities to warm dark matter, as they lead to suppression of power on small scales when the dark-matter velocity dispersion is sizable. Nonetheless, both the physical origin and the extent of the suppression differ for self-interacting dark matter f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.06215","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/2102.06215/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":"2026-07-05T02:42:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ja/q2T4PIyXLgapFpy9Zilt5Sij1UKC//DemCk1y+5jGZiMzlnFTjV5tRcrW+rsvkU7+F/hqoLHirOx73nrtCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:36:43.620274Z"},"content_sha256":"7f39bf7174f9298d54a8204632f72b4a66c98a907770153397c2f3fda710349d","schema_version":"1.0","event_id":"sha256:7f39bf7174f9298d54a8204632f72b4a66c98a907770153397c2f3fda710349d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4NEE2SQA2MIYUHHCUFPNG7JCQ/bundle.json","state_url":"https://pith.science/pith/Z4NEE2SQA2MIYUHHCUFPNG7JCQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4NEE2SQA2MIYUHHCUFPNG7JCQ/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":"2026-08-12T22:36:43Z","links":{"resolver":"https://pith.science/pith/Z4NEE2SQA2MIYUHHCUFPNG7JCQ","bundle":"https://pith.science/pith/Z4NEE2SQA2MIYUHHCUFPNG7JCQ/bundle.json","state":"https://pith.science/pith/Z4NEE2SQA2MIYUHHCUFPNG7JCQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4NEE2SQA2MIYUHHCUFPNG7JCQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Z4NEE2SQA2MIYUHHCUFPNG7JCQ","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":"ecdd976e52fab5f446aaa8d68938125426f55175011e638fa41b47f831885bd1","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-02-11T19:00:07Z","title_canon_sha256":"eb9e8cefe3182dff1ebc54190f4d60bf96d32eef96ac2b9725abe9b9a634475b"},"schema_version":"1.0","source":{"id":"2102.06215","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.06215","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"arxiv_version","alias_value":"2102.06215v2","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.06215","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"pith_short_12","alias_value":"Z4NEE2SQA2MI","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"pith_short_16","alias_value":"Z4NEE2SQA2MIYUHH","created_at":"2026-07-05T02:42:03Z"},{"alias_kind":"pith_short_8","alias_value":"Z4NEE2SQ","created_at":"2026-07-05T02:42:03Z"}],"graph_snapshots":[{"event_id":"sha256:7f39bf7174f9298d54a8204632f72b4a66c98a907770153397c2f3fda710349d","target":"graph","created_at":"2026-07-05T02:42:03Z","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/2102.06215/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the evolution of cosmological perturbations in dark-matter models with elastic and velocity-independent self interactions. Such interactions are imprinted in the matter-power spectrum as dark acoustic oscillations, which can be experimentally explored to determine the strength of the self scatterings. Models with self interactions have similarities to warm dark matter, as they lead to suppression of power on small scales when the dark-matter velocity dispersion is sizable. Nonetheless, both the physical origin and the extent of the suppression differ for self-interacting dark matter f","authors_text":"Daniel Egana-Ugrinovic, Daniel Gift, Marilena Loverde, Rouven Essig","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-02-11T19:00:07Z","title":"The Cosmological Evolution of Self-interacting Dark Matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.06215","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":"sha256:7ba4eae61ab0bcca3b9aabf556714613ae46cacd22d33ae7e29b8eccfafb4825","target":"record","created_at":"2026-07-05T02:42:03Z","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":"ecdd976e52fab5f446aaa8d68938125426f55175011e638fa41b47f831885bd1","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-02-11T19:00:07Z","title_canon_sha256":"eb9e8cefe3182dff1ebc54190f4d60bf96d32eef96ac2b9725abe9b9a634475b"},"schema_version":"1.0","source":{"id":"2102.06215","kind":"arxiv","version":2}},"canonical_sha256":"cf1a426a5006988c50e7150af69be914164b06bb952c21a7295812f25ed84cf4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf1a426a5006988c50e7150af69be914164b06bb952c21a7295812f25ed84cf4","first_computed_at":"2026-07-05T02:42:03.826708Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:42:03.826708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RRWfDSEJ55WDPhEpIKLBJkVK0JscU34m+CxfybHYbdvFOFsmfOSu6jp7fs/Vu3Lrku8drQV7T9j0BMxFb4XEBA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:42:03.827154Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.06215","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ba4eae61ab0bcca3b9aabf556714613ae46cacd22d33ae7e29b8eccfafb4825","sha256:7f39bf7174f9298d54a8204632f72b4a66c98a907770153397c2f3fda710349d"],"state_sha256":"8bdb243c6fe826a106c417b2947e0fe77091ee6e814dfb637755e72d7037c49e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q2FCDCpGr0uUtF7qRa2itgofDATn1TkSe0w/ZP/5BgxPPivBkDqz/cpWtORFDk8KG000hfJdQR06RuaSnXN2AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T22:36:43.625535Z","bundle_sha256":"3895b2ebe052437f55b4f4984b5a580caeb519edb9cc12dda41614b0ba55a2d7"}}