{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:XLRHME3KSCO66AHOGVPNKDA6OO","short_pith_number":"pith:XLRHME3K","canonical_record":{"source":{"id":"0811.2230","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph","submitted_at":"2008-11-13T21:22:14Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"bcb2b94afb294d3a23b39d5719c1a9ad7c02b5cf02c820eddd65e648864a1c57","abstract_canon_sha256":"dd86a0fd35ee247643961e035734b11773c24ed7f532af0924766b33562e9847"},"schema_version":"1.0"},"canonical_sha256":"bae276136a909def00ee355ed50c1e7398605c49bae7cc49a6e39f3ad11a70e8","source":{"kind":"arxiv","id":"0811.2230","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.2230","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"arxiv_version","alias_value":"0811.2230v4","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.2230","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"pith_short_12","alias_value":"XLRHME3KSCO6","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"XLRHME3KSCO66AHO","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"XLRHME3K","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:XLRHME3KSCO66AHOGVPNKDA6OO","target":"record","payload":{"canonical_record":{"source":{"id":"0811.2230","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph","submitted_at":"2008-11-13T21:22:14Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"bcb2b94afb294d3a23b39d5719c1a9ad7c02b5cf02c820eddd65e648864a1c57","abstract_canon_sha256":"dd86a0fd35ee247643961e035734b11773c24ed7f532af0924766b33562e9847"},"schema_version":"1.0"},"canonical_sha256":"bae276136a909def00ee355ed50c1e7398605c49bae7cc49a6e39f3ad11a70e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:13.902632Z","signature_b64":"MJEGL+eOD/dNCAxLUvknpABDkO7IuN4d5lo1UzfZAyQ5GAtMkNM7rAdh2iHVYRFomwDSOtqI6eq6QDbAADhZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bae276136a909def00ee355ed50c1e7398605c49bae7cc49a6e39f3ad11a70e8","last_reissued_at":"2026-05-18T02:35:13.902224Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:13.902224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0811.2230","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:35:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WI5RaqDPsLLExl8uoqOa6Xf0PDkIDNOgnoX+vlO1SV+RvHJdRCKjmfO20XfM5ZyRS2pZVvqq0SZ0jiNexd5JBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:24:20.315966Z"},"content_sha256":"03d8d9e409bed919760a00804e5fe4ad52c582cebd8cedd94cc383cd3d166ada","schema_version":"1.0","event_id":"sha256:03d8d9e409bed919760a00804e5fe4ad52c582cebd8cedd94cc383cd3d166ada"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:XLRHME3KSCO66AHOGVPNKDA6OO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lorentz Invariance Violation and the Observed Spectrum of Ultrahigh Energy Cosmic Rays","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph","authors_text":"F. W. Stecker (NASA/GSFC), S. T. Scully (JMU)","submitted_at":"2008-11-13T21:22:14Z","abstract_excerpt":"There has been much interest in possible violations of Lorentz invariance, particularly motivated by quantum gravity theories. It has been suggested that a small amount of Lorentz invariance violation (LIV) could turn off photomeson interactions of ultrahigh energy cosmic rays (UHECRs) with photons of the cosmic background radiation and thereby eliminate the resulting sharp steepening in the spectrum of the highest energy CRs predicted by Greisen Zatsepin and Kuzmin (GZK). Recent measurements of the UHECR spectrum reported by the HiRes and Auger collaborations, however, indicate the presence o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.2230","kind":"arxiv","version":4},"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":"2026-05-18T02:35:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mi9gvVuP0R/Za7M/ZOS4akTSgpfEmAv6KTu9K+fCe7xeyVUpfmSTdcOEhWD9GbfKubCjLhzAdDFQ3Alyed/xAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:24:20.316280Z"},"content_sha256":"e49bd47bb4013352c82a4c7e2faefd2451bd0fee268d875acf6866da9429d7c8","schema_version":"1.0","event_id":"sha256:e49bd47bb4013352c82a4c7e2faefd2451bd0fee268d875acf6866da9429d7c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XLRHME3KSCO66AHOGVPNKDA6OO/bundle.json","state_url":"https://pith.science/pith/XLRHME3KSCO66AHOGVPNKDA6OO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XLRHME3KSCO66AHOGVPNKDA6OO/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":"2026-08-04T23:24:20Z","links":{"resolver":"https://pith.science/pith/XLRHME3KSCO66AHOGVPNKDA6OO","bundle":"https://pith.science/pith/XLRHME3KSCO66AHOGVPNKDA6OO/bundle.json","state":"https://pith.science/pith/XLRHME3KSCO66AHOGVPNKDA6OO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XLRHME3KSCO66AHOGVPNKDA6OO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:XLRHME3KSCO66AHOGVPNKDA6OO","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":"dd86a0fd35ee247643961e035734b11773c24ed7f532af0924766b33562e9847","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph","submitted_at":"2008-11-13T21:22:14Z","title_canon_sha256":"bcb2b94afb294d3a23b39d5719c1a9ad7c02b5cf02c820eddd65e648864a1c57"},"schema_version":"1.0","source":{"id":"0811.2230","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.2230","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"arxiv_version","alias_value":"0811.2230v4","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.2230","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"pith_short_12","alias_value":"XLRHME3KSCO6","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"XLRHME3KSCO66AHO","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"XLRHME3K","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:e49bd47bb4013352c82a4c7e2faefd2451bd0fee268d875acf6866da9429d7c8","target":"graph","created_at":"2026-05-18T02:35:13Z","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 has been much interest in possible violations of Lorentz invariance, particularly motivated by quantum gravity theories. It has been suggested that a small amount of Lorentz invariance violation (LIV) could turn off photomeson interactions of ultrahigh energy cosmic rays (UHECRs) with photons of the cosmic background radiation and thereby eliminate the resulting sharp steepening in the spectrum of the highest energy CRs predicted by Greisen Zatsepin and Kuzmin (GZK). Recent measurements of the UHECR spectrum reported by the HiRes and Auger collaborations, however, indicate the presence o","authors_text":"F. W. Stecker (NASA/GSFC), S. T. Scully (JMU)","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph","submitted_at":"2008-11-13T21:22:14Z","title":"Lorentz Invariance Violation and the Observed Spectrum of Ultrahigh Energy Cosmic Rays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.2230","kind":"arxiv","version":4},"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":"sha256:03d8d9e409bed919760a00804e5fe4ad52c582cebd8cedd94cc383cd3d166ada","target":"record","created_at":"2026-05-18T02:35:13Z","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":"dd86a0fd35ee247643961e035734b11773c24ed7f532af0924766b33562e9847","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"astro-ph","submitted_at":"2008-11-13T21:22:14Z","title_canon_sha256":"bcb2b94afb294d3a23b39d5719c1a9ad7c02b5cf02c820eddd65e648864a1c57"},"schema_version":"1.0","source":{"id":"0811.2230","kind":"arxiv","version":4}},"canonical_sha256":"bae276136a909def00ee355ed50c1e7398605c49bae7cc49a6e39f3ad11a70e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bae276136a909def00ee355ed50c1e7398605c49bae7cc49a6e39f3ad11a70e8","first_computed_at":"2026-05-18T02:35:13.902224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:13.902224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MJEGL+eOD/dNCAxLUvknpABDkO7IuN4d5lo1UzfZAyQ5GAtMkNM7rAdh2iHVYRFomwDSOtqI6eq6QDbAADhZAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:13.902632Z","signed_message":"canonical_sha256_bytes"},"source_id":"0811.2230","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03d8d9e409bed919760a00804e5fe4ad52c582cebd8cedd94cc383cd3d166ada","sha256:e49bd47bb4013352c82a4c7e2faefd2451bd0fee268d875acf6866da9429d7c8"],"state_sha256":"a07482cb0598e92823ee81914ec424bc0c113208008c348ef9efec62d467b688"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ShimeL0WHzkwQGOrZmDyzXwzWHCDKu3h+eWfMcCdHqyWb9nhmSXoYNq5PhOrc0FuZcTxl3poKML62MYGab/PDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T23:24:20.319314Z","bundle_sha256":"966c5143a6dcd9d2371be09b1140a4e5cf497dabc44235f07a5d98cdef031f59"}}