{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:P76Q5LPDSSMPMHGSU7J7A6HMR3","short_pith_number":"pith:P76Q5LPD","canonical_record":{"source":{"id":"astro-ph/0405549","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-05-27T19:35:31Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"5fa23caff77f82c4605949376bab81eacecc791ebb3ad9ceab64476fcf363491","abstract_canon_sha256":"3aa0aa5fd11ec132f9fc8d90db9fb50e4490e5a7a4ed8b2c0faa3fa4a8732488"},"schema_version":"1.0"},"canonical_sha256":"7ffd0eade39498f61cd2a7d3f078ec8edc95a81fb8a61b3b1099a9e346ff944f","source":{"kind":"arxiv","id":"astro-ph/0405549","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0405549","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0405549v2","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0405549","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"pith_short_12","alias_value":"P76Q5LPDSSMP","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"pith_short_16","alias_value":"P76Q5LPDSSMPMHGS","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"pith_short_8","alias_value":"P76Q5LPD","created_at":"2026-07-04T16:43:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:P76Q5LPDSSMPMHGSU7J7A6HMR3","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0405549","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-05-27T19:35:31Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"5fa23caff77f82c4605949376bab81eacecc791ebb3ad9ceab64476fcf363491","abstract_canon_sha256":"3aa0aa5fd11ec132f9fc8d90db9fb50e4490e5a7a4ed8b2c0faa3fa4a8732488"},"schema_version":"1.0"},"canonical_sha256":"7ffd0eade39498f61cd2a7d3f078ec8edc95a81fb8a61b3b1099a9e346ff944f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:43:51.487171Z","signature_b64":"LPqoySpS/K2nxWKtKKsAFjQs+QJoxwALZ3Enh8MuRpYKTImDa4QIYDrvU7L2V1yqACEDq1OWeys4LPoAMKxrCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ffd0eade39498f61cd2a7d3f078ec8edc95a81fb8a61b3b1099a9e346ff944f","last_reissued_at":"2026-07-04T16:43:51.486678Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:43:51.486678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0405549","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":"2026-07-04T16:43:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TgiKIRJso+ulAOOtGEHh5A0e2ognGLF++D0D8p+6C3oh3UI305kSp6cGs5Feq9LQ1wz71cZUOSj3ol8SNGpEBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:44:09.672072Z"},"content_sha256":"9fbcefee409a6c12c09efc6c8f1c62f590af7136317cb546e620515ef1e91f8d","schema_version":"1.0","event_id":"sha256:9fbcefee409a6c12c09efc6c8f1c62f590af7136317cb546e620515ef1e91f8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:P76Q5LPDSSMPMHGSU7J7A6HMR3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultra-High Energy Cosmic Ray Nuclei from Individual Magnetized Sources","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"APC, Guenter Sigl (GReCO, IAP, Paris)","submitted_at":"2004-05-27T19:35:31Z","abstract_excerpt":"We investigate the dependence of composition, spectrum and angular distributions of ultra-high energy cosmic rays above 10^19 eV from individual sources on their magnetization. We find that, especially for sources within a few megaparsecs from the observer, observable spectra and composition are severely modified if the source is surrounded by fields of ~ 10^-7 Gauss on scales of a few megaparsecs. Low energy particles diffuse over larger distances during their energy loss time. This leads to considerable hardening of the spectrum up to the energy where the loss distance becomes comparable to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0405549","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/astro-ph/0405549/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":"2026-07-04T16:43:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mccGGCp7IOk6gubC7ubG8iHONrdoWy7leGcXBLXHE3le5iR7FoNiBPsFEUGV+FlWIkCajqTDcMOKdyOX8BrWBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:44:09.672594Z"},"content_sha256":"c12e16ec2f3df723d0da8e8b4b1da49e431a29f20f87fc010e89d54c6ede344f","schema_version":"1.0","event_id":"sha256:c12e16ec2f3df723d0da8e8b4b1da49e431a29f20f87fc010e89d54c6ede344f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P76Q5LPDSSMPMHGSU7J7A6HMR3/bundle.json","state_url":"https://pith.science/pith/P76Q5LPDSSMPMHGSU7J7A6HMR3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P76Q5LPDSSMPMHGSU7J7A6HMR3/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":"2026-08-06T08:44:09Z","links":{"resolver":"https://pith.science/pith/P76Q5LPDSSMPMHGSU7J7A6HMR3","bundle":"https://pith.science/pith/P76Q5LPDSSMPMHGSU7J7A6HMR3/bundle.json","state":"https://pith.science/pith/P76Q5LPDSSMPMHGSU7J7A6HMR3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P76Q5LPDSSMPMHGSU7J7A6HMR3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:P76Q5LPDSSMPMHGSU7J7A6HMR3","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":"3aa0aa5fd11ec132f9fc8d90db9fb50e4490e5a7a4ed8b2c0faa3fa4a8732488","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"2004-05-27T19:35:31Z","title_canon_sha256":"5fa23caff77f82c4605949376bab81eacecc791ebb3ad9ceab64476fcf363491"},"schema_version":"1.0","source":{"id":"astro-ph/0405549","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0405549","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0405549v2","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0405549","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"pith_short_12","alias_value":"P76Q5LPDSSMP","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"pith_short_16","alias_value":"P76Q5LPDSSMPMHGS","created_at":"2026-07-04T16:43:51Z"},{"alias_kind":"pith_short_8","alias_value":"P76Q5LPD","created_at":"2026-07-04T16:43:51Z"}],"graph_snapshots":[{"event_id":"sha256:c12e16ec2f3df723d0da8e8b4b1da49e431a29f20f87fc010e89d54c6ede344f","target":"graph","created_at":"2026-07-04T16:43:51Z","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/astro-ph/0405549/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the dependence of composition, spectrum and angular distributions of ultra-high energy cosmic rays above 10^19 eV from individual sources on their magnetization. We find that, especially for sources within a few megaparsecs from the observer, observable spectra and composition are severely modified if the source is surrounded by fields of ~ 10^-7 Gauss on scales of a few megaparsecs. Low energy particles diffuse over larger distances during their energy loss time. This leads to considerable hardening of the spectrum up to the energy where the loss distance becomes comparable to ","authors_text":"APC, Guenter Sigl (GReCO, IAP, Paris)","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-05-27T19:35:31Z","title":"Ultra-High Energy Cosmic Ray Nuclei from Individual Magnetized Sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0405549","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":"sha256:9fbcefee409a6c12c09efc6c8f1c62f590af7136317cb546e620515ef1e91f8d","target":"record","created_at":"2026-07-04T16:43:51Z","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":"3aa0aa5fd11ec132f9fc8d90db9fb50e4490e5a7a4ed8b2c0faa3fa4a8732488","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"2004-05-27T19:35:31Z","title_canon_sha256":"5fa23caff77f82c4605949376bab81eacecc791ebb3ad9ceab64476fcf363491"},"schema_version":"1.0","source":{"id":"astro-ph/0405549","kind":"arxiv","version":2}},"canonical_sha256":"7ffd0eade39498f61cd2a7d3f078ec8edc95a81fb8a61b3b1099a9e346ff944f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ffd0eade39498f61cd2a7d3f078ec8edc95a81fb8a61b3b1099a9e346ff944f","first_computed_at":"2026-07-04T16:43:51.486678Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:43:51.486678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LPqoySpS/K2nxWKtKKsAFjQs+QJoxwALZ3Enh8MuRpYKTImDa4QIYDrvU7L2V1yqACEDq1OWeys4LPoAMKxrCw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:43:51.487171Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0405549","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9fbcefee409a6c12c09efc6c8f1c62f590af7136317cb546e620515ef1e91f8d","sha256:c12e16ec2f3df723d0da8e8b4b1da49e431a29f20f87fc010e89d54c6ede344f"],"state_sha256":"4cd63f354d0f6cf040c58d57c5c16d3d3d3d43fe12fc9c8f503cf09f0287def7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wjkUUcN6QL9tVg2PqVL7ROgqADXs3phwupCMWdRFGxrDba1j6RxQhSb6W4/IjeW96aUup0UWv/jir+7JOjaJBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T08:44:09.676473Z","bundle_sha256":"459f85f8ded676a404dbd0a66da23aa14476d9571f64dc444b422e8341277f71"}}