{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:EVYG5UXVJRAKHCK6AZGYNPBNSV","short_pith_number":"pith:EVYG5UXV","canonical_record":{"source":{"id":"1810.00636","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-01T11:57:11Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"108999835fb6f7bfa25cb568f4ec7d5d3fcf19cb9882e086efaa28c30b039d89","abstract_canon_sha256":"8cebaf713f0cc26444db09d5474caf4326350ce7b86ecf3e60d43aa845ea4b85"},"schema_version":"1.0"},"canonical_sha256":"25706ed2f54c40a3895e064d86bc2d9557457845f88b9cd1503257c00f196de8","source":{"kind":"arxiv","id":"1810.00636","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.00636","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"arxiv_version","alias_value":"1810.00636v2","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.00636","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"pith_short_12","alias_value":"EVYG5UXVJRAK","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EVYG5UXVJRAKHCK6","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EVYG5UXV","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:EVYG5UXVJRAKHCK6AZGYNPBNSV","target":"record","payload":{"canonical_record":{"source":{"id":"1810.00636","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-01T11:57:11Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"108999835fb6f7bfa25cb568f4ec7d5d3fcf19cb9882e086efaa28c30b039d89","abstract_canon_sha256":"8cebaf713f0cc26444db09d5474caf4326350ce7b86ecf3e60d43aa845ea4b85"},"schema_version":"1.0"},"canonical_sha256":"25706ed2f54c40a3895e064d86bc2d9557457845f88b9cd1503257c00f196de8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:44.186115Z","signature_b64":"+OA4xlG3cFpNORqwUbL30sK0yqnDFhlaeZ1GacD3BcGUS1t/E0LrqabtpHA6Fp07QpUPKnb1BW/rzcVDFoHDBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25706ed2f54c40a3895e064d86bc2d9557457845f88b9cd1503257c00f196de8","last_reissued_at":"2026-05-18T00:02:44.185485Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:44.185485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.00636","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":"2026-05-18T00:02:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eGrNnqLCDLW4aXvZVdwyqcvRPQJt5/RhkV+JhRWq7a7J8ogP8c1aEu9gQi830hT/2GLpKrxCnvGhHjxvMmeZCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T19:50:06.545779Z"},"content_sha256":"0b89983e82cd3c35b3f6b28a1508673d4c7ba4602b7ae306eb5695af2f356d71","schema_version":"1.0","event_id":"sha256:0b89983e82cd3c35b3f6b28a1508673d4c7ba4602b7ae306eb5695af2f356d71"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:EVYG5UXVJRAKHCK6AZGYNPBNSV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Light speed variation from gamma ray bursts: criteria for low energy photons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Bo-Qiang Ma, Yue Liu","submitted_at":"2018-10-01T11:57:11Z","abstract_excerpt":"We examine a method to detect the light speed variation from gamma ray burst data observed by the Fermi Gamma-ray Space Telescope (FGST). We suggest new criteria to determine the characteristic time for low energy photons by the energy curve and the average energy curve, and obtain similar results compared with those from the light curve. We offer a new criterion with both the light curve and the average energy curve to determine the characteristic time for low energy photons. We then apply the new criteria to the GBM NaI data, the GBM BGO data, and the LAT LLE data, and obtain consistent resu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.00636","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":""},"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":"2026-05-18T00:02:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XbIHHvEsqyC90FvU8WCDFRrk2tL5M7dWkX2KW5I/JwloX+xtz+oQhBMlJkqLrfWUSJRpe70m2dqESVBmQdstCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T19:50:06.546489Z"},"content_sha256":"482d6f816dc541dca71c0e35633a799361ad1e471c876ff186db99199aca228a","schema_version":"1.0","event_id":"sha256:482d6f816dc541dca71c0e35633a799361ad1e471c876ff186db99199aca228a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EVYG5UXVJRAKHCK6AZGYNPBNSV/bundle.json","state_url":"https://pith.science/pith/EVYG5UXVJRAKHCK6AZGYNPBNSV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EVYG5UXVJRAKHCK6AZGYNPBNSV/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":"2026-05-31T19:50:06Z","links":{"resolver":"https://pith.science/pith/EVYG5UXVJRAKHCK6AZGYNPBNSV","bundle":"https://pith.science/pith/EVYG5UXVJRAKHCK6AZGYNPBNSV/bundle.json","state":"https://pith.science/pith/EVYG5UXVJRAKHCK6AZGYNPBNSV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EVYG5UXVJRAKHCK6AZGYNPBNSV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:EVYG5UXVJRAKHCK6AZGYNPBNSV","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":"8cebaf713f0cc26444db09d5474caf4326350ce7b86ecf3e60d43aa845ea4b85","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-01T11:57:11Z","title_canon_sha256":"108999835fb6f7bfa25cb568f4ec7d5d3fcf19cb9882e086efaa28c30b039d89"},"schema_version":"1.0","source":{"id":"1810.00636","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.00636","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"arxiv_version","alias_value":"1810.00636v2","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.00636","created_at":"2026-05-18T00:02:44Z"},{"alias_kind":"pith_short_12","alias_value":"EVYG5UXVJRAK","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"EVYG5UXVJRAKHCK6","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"EVYG5UXV","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:482d6f816dc541dca71c0e35633a799361ad1e471c876ff186db99199aca228a","target":"graph","created_at":"2026-05-18T00:02:44Z","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":"We examine a method to detect the light speed variation from gamma ray burst data observed by the Fermi Gamma-ray Space Telescope (FGST). We suggest new criteria to determine the characteristic time for low energy photons by the energy curve and the average energy curve, and obtain similar results compared with those from the light curve. We offer a new criterion with both the light curve and the average energy curve to determine the characteristic time for low energy photons. We then apply the new criteria to the GBM NaI data, the GBM BGO data, and the LAT LLE data, and obtain consistent resu","authors_text":"Bo-Qiang Ma, Yue Liu","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-01T11:57:11Z","title":"Light speed variation from gamma ray bursts: criteria for low energy photons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.00636","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":"sha256:0b89983e82cd3c35b3f6b28a1508673d4c7ba4602b7ae306eb5695af2f356d71","target":"record","created_at":"2026-05-18T00:02:44Z","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":"8cebaf713f0cc26444db09d5474caf4326350ce7b86ecf3e60d43aa845ea4b85","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-10-01T11:57:11Z","title_canon_sha256":"108999835fb6f7bfa25cb568f4ec7d5d3fcf19cb9882e086efaa28c30b039d89"},"schema_version":"1.0","source":{"id":"1810.00636","kind":"arxiv","version":2}},"canonical_sha256":"25706ed2f54c40a3895e064d86bc2d9557457845f88b9cd1503257c00f196de8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25706ed2f54c40a3895e064d86bc2d9557457845f88b9cd1503257c00f196de8","first_computed_at":"2026-05-18T00:02:44.185485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:02:44.185485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+OA4xlG3cFpNORqwUbL30sK0yqnDFhlaeZ1GacD3BcGUS1t/E0LrqabtpHA6Fp07QpUPKnb1BW/rzcVDFoHDBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:02:44.186115Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.00636","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b89983e82cd3c35b3f6b28a1508673d4c7ba4602b7ae306eb5695af2f356d71","sha256:482d6f816dc541dca71c0e35633a799361ad1e471c876ff186db99199aca228a"],"state_sha256":"eaf171acea27c6c4f0a8844dbd0450d641e1587cdb0b456d8715f9760506a02a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D3JD2LTsI3zusDsIUV1+SLewDip3xDrlr9lQurgpoPbebrtcqaEGPr8Ya5wnAr93Qkd/DOPVLSh8fUyQij4rAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T19:50:06.550099Z","bundle_sha256":"54bd71e4697642e1cdee717277312ff056f7deebff2d5290543257fc669e633a"}}