{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:CMQFNKFOEUEY5L3NUMN6E2H7ZG","short_pith_number":"pith:CMQFNKFO","canonical_record":{"source":{"id":"astro-ph/0412371","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-15T13:34:28Z","cross_cats_sorted":[],"title_canon_sha256":"04ebc651d24a48763c3ec5f5dcf579170ddf0f947e632f27e6148db22aefba80","abstract_canon_sha256":"15385e246c44f9dd9f93fd435ed57f3750de81fc6a052ad0417c0ef097257265"},"schema_version":"1.0"},"canonical_sha256":"132056a8ae25098eaf6da31be268ffc9b9e4babec9a377c1a83a21118afcb422","source":{"kind":"arxiv","id":"astro-ph/0412371","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0412371","created_at":"2026-05-18T01:40:34Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0412371v1","created_at":"2026-05-18T01:40:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0412371","created_at":"2026-05-18T01:40:34Z"},{"alias_kind":"pith_short_12","alias_value":"CMQFNKFOEUEY","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"CMQFNKFOEUEY5L3N","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"CMQFNKFO","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:CMQFNKFOEUEY5L3NUMN6E2H7ZG","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0412371","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-15T13:34:28Z","cross_cats_sorted":[],"title_canon_sha256":"04ebc651d24a48763c3ec5f5dcf579170ddf0f947e632f27e6148db22aefba80","abstract_canon_sha256":"15385e246c44f9dd9f93fd435ed57f3750de81fc6a052ad0417c0ef097257265"},"schema_version":"1.0"},"canonical_sha256":"132056a8ae25098eaf6da31be268ffc9b9e4babec9a377c1a83a21118afcb422","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:34.701007Z","signature_b64":"j8A4JK6/sdNkZEavG7LXt8roKAKaT+63wRVtXhQ7h3jX4FHyp1xZQUa7TwZkUHLoaGeUc9HhK0ZsrwfopsBTBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"132056a8ae25098eaf6da31be268ffc9b9e4babec9a377c1a83a21118afcb422","last_reissued_at":"2026-05-18T01:40:34.700506Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:34.700506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0412371","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":"2026-05-18T01:40:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fFYT5nJk6VBKWM2+J8GCyvI4OPf4lpcRudnqVsc2zsOeyboNp+MvbHm6YflPOZBzaaPsS1skA2qCh6GxCt4OBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T04:06:29.440258Z"},"content_sha256":"6c3078fd0261a70187cdb50ac6bd00b4d17348bcebc087a38a727b64b0bef590","schema_version":"1.0","event_id":"sha256:6c3078fd0261a70187cdb50ac6bd00b4d17348bcebc087a38a727b64b0bef590"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:CMQFNKFOEUEY5L3NUMN6E2H7ZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The quest for cosmic ray protons in galaxy clusters","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Christoph Pfrommer (MPA), Torsten A. Ensslin (MPA)","submitted_at":"2004-12-15T13:34:28Z","abstract_excerpt":"There have been many speculations about the presence of cosmic ray protons (CRps) in galaxy clusters over the past two decades. However, no direct evidence such as the characteristic gamma-ray signature of decaying pions has been found so far. These pions would be a direct tracer of hadronic CRp interactions with the ambient thermal gas also yielding observable synchrotron and inverse Compton emission by additionally produced secondary electrons. The obvious question concerns the type of galaxy clusters most likely to yield a signal: Particularly suited sites should be cluster cooling cores du"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0412371","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":""},"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":"2026-05-18T01:40:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2E4qYod+ho9fa8nDu0Lv83/1Aquol5anoE5hAsquRCqvBeRxMMN1O5yRhkq8ofcmlXaivucAg90YWv04gMG8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T04:06:29.440896Z"},"content_sha256":"b74d2beaeef4aeb61a557293c7935bfc1f96a46d74f82c2aace6b616d1cb5271","schema_version":"1.0","event_id":"sha256:b74d2beaeef4aeb61a557293c7935bfc1f96a46d74f82c2aace6b616d1cb5271"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CMQFNKFOEUEY5L3NUMN6E2H7ZG/bundle.json","state_url":"https://pith.science/pith/CMQFNKFOEUEY5L3NUMN6E2H7ZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CMQFNKFOEUEY5L3NUMN6E2H7ZG/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":"2026-05-30T04:06:29Z","links":{"resolver":"https://pith.science/pith/CMQFNKFOEUEY5L3NUMN6E2H7ZG","bundle":"https://pith.science/pith/CMQFNKFOEUEY5L3NUMN6E2H7ZG/bundle.json","state":"https://pith.science/pith/CMQFNKFOEUEY5L3NUMN6E2H7ZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CMQFNKFOEUEY5L3NUMN6E2H7ZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:CMQFNKFOEUEY5L3NUMN6E2H7ZG","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":"15385e246c44f9dd9f93fd435ed57f3750de81fc6a052ad0417c0ef097257265","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-15T13:34:28Z","title_canon_sha256":"04ebc651d24a48763c3ec5f5dcf579170ddf0f947e632f27e6148db22aefba80"},"schema_version":"1.0","source":{"id":"astro-ph/0412371","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0412371","created_at":"2026-05-18T01:40:34Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0412371v1","created_at":"2026-05-18T01:40:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0412371","created_at":"2026-05-18T01:40:34Z"},{"alias_kind":"pith_short_12","alias_value":"CMQFNKFOEUEY","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"CMQFNKFOEUEY5L3N","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"CMQFNKFO","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:b74d2beaeef4aeb61a557293c7935bfc1f96a46d74f82c2aace6b616d1cb5271","target":"graph","created_at":"2026-05-18T01:40:34Z","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":"There have been many speculations about the presence of cosmic ray protons (CRps) in galaxy clusters over the past two decades. However, no direct evidence such as the characteristic gamma-ray signature of decaying pions has been found so far. These pions would be a direct tracer of hadronic CRp interactions with the ambient thermal gas also yielding observable synchrotron and inverse Compton emission by additionally produced secondary electrons. The obvious question concerns the type of galaxy clusters most likely to yield a signal: Particularly suited sites should be cluster cooling cores du","authors_text":"Christoph Pfrommer (MPA), Torsten A. Ensslin (MPA)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-12-15T13:34:28Z","title":"The quest for cosmic ray protons in galaxy clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0412371","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":"sha256:6c3078fd0261a70187cdb50ac6bd00b4d17348bcebc087a38a727b64b0bef590","target":"record","created_at":"2026-05-18T01:40:34Z","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":"15385e246c44f9dd9f93fd435ed57f3750de81fc6a052ad0417c0ef097257265","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-12-15T13:34:28Z","title_canon_sha256":"04ebc651d24a48763c3ec5f5dcf579170ddf0f947e632f27e6148db22aefba80"},"schema_version":"1.0","source":{"id":"astro-ph/0412371","kind":"arxiv","version":1}},"canonical_sha256":"132056a8ae25098eaf6da31be268ffc9b9e4babec9a377c1a83a21118afcb422","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"132056a8ae25098eaf6da31be268ffc9b9e4babec9a377c1a83a21118afcb422","first_computed_at":"2026-05-18T01:40:34.700506Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:34.700506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j8A4JK6/sdNkZEavG7LXt8roKAKaT+63wRVtXhQ7h3jX4FHyp1xZQUa7TwZkUHLoaGeUc9HhK0ZsrwfopsBTBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:34.701007Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0412371","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c3078fd0261a70187cdb50ac6bd00b4d17348bcebc087a38a727b64b0bef590","sha256:b74d2beaeef4aeb61a557293c7935bfc1f96a46d74f82c2aace6b616d1cb5271"],"state_sha256":"4d620f6aa04b0bb1b122d2cd964adf5096c4656b2fca369754e099a9130bab55"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7d+KHaja/ORRVwhrc82Z1jFMPzrwrDyjy85bB/FENP4xb1awfaphtVDmykS778rbPIjWOC8/MBGHwq8NCGKzBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T04:06:29.444150Z","bundle_sha256":"262a87c92ea1c965913d5e8c08591e2ba1a8251163108cd844f3b1d718605236"}}