{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:G6HG3FUNVQ7T7FRGXXXCANT6M5","short_pith_number":"pith:G6HG3FUN","canonical_record":{"source":{"id":"1605.08352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-26T16:22:42Z","cross_cats_sorted":[],"title_canon_sha256":"8708a4e722c7a66aa164dac4182b268883624fa5546c31389acfba5b54e2f7cb","abstract_canon_sha256":"80065af8514c4c5505272d4469ebe4f74c971eb7c7e7d3eabc2241a7b51d7389"},"schema_version":"1.0"},"canonical_sha256":"378e6d968dac3f3f9626bdee20367e676e1d594b89a5c4b918501cdd9296d950","source":{"kind":"arxiv","id":"1605.08352","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.08352","created_at":"2026-05-18T01:02:39Z"},{"alias_kind":"arxiv_version","alias_value":"1605.08352v1","created_at":"2026-05-18T01:02:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.08352","created_at":"2026-05-18T01:02:39Z"},{"alias_kind":"pith_short_12","alias_value":"G6HG3FUNVQ7T","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"G6HG3FUNVQ7T7FRG","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"G6HG3FUN","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:G6HG3FUNVQ7T7FRGXXXCANT6M5","target":"record","payload":{"canonical_record":{"source":{"id":"1605.08352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-26T16:22:42Z","cross_cats_sorted":[],"title_canon_sha256":"8708a4e722c7a66aa164dac4182b268883624fa5546c31389acfba5b54e2f7cb","abstract_canon_sha256":"80065af8514c4c5505272d4469ebe4f74c971eb7c7e7d3eabc2241a7b51d7389"},"schema_version":"1.0"},"canonical_sha256":"378e6d968dac3f3f9626bdee20367e676e1d594b89a5c4b918501cdd9296d950","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:39.547405Z","signature_b64":"qpeeQZFkHijuaDUQNz96GmyupN79pSkuFPe117ofJ+ZI57E1HpVuUoqk5bBFauJK/xtsy5ap17bRqWuKFN5hAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"378e6d968dac3f3f9626bdee20367e676e1d594b89a5c4b918501cdd9296d950","last_reissued_at":"2026-05-18T01:02:39.546641Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:39.546641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.08352","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":"2026-05-18T01:02:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wJ7Y96SUoiQZHDRp9J4H81CupMB4erAOxReXT11x85v2l84rzHbDO+5OsG2pnyUJqbUrRe6BeNhuSSbFHH9HDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:23:06.705261Z"},"content_sha256":"6154e204718aff5b429f13abe3340640184365fb0d72cd8aa8eaf668bdf5d6ea","schema_version":"1.0","event_id":"sha256:6154e204718aff5b429f13abe3340640184365fb0d72cd8aa8eaf668bdf5d6ea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:G6HG3FUNVQ7T7FRGXXXCANT6M5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automated Parton-Shower Variations in Pythia 8","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Astronomy, Australia), Batavia, Fermilab, IL USA (2) School of Physics, Monash University, P. Skands (2) ((1) Computing Division, S. Mrenna (1), Victoria","submitted_at":"2016-05-26T16:22:42Z","abstract_excerpt":"In the era of precision physics measurements at the LHC, efficient and exhaustive estimations of theoretical uncertainties play an increasingly crucial role. In the context of Monte Carlo (MC) event generators, the estimation of such uncertainties traditionally requires independent MC runs for each variation, for a linear increase in total run time. In this work, we report on an automated evaluation of the dominant (renormalization-scale and non-singular) perturbative uncertainties in the PYTHIA 8 event generator, with only a modest computational overhead. Each generated event is accompanied b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.08352","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":"2026-05-18T01:02:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+nHIS5B+87EvcmYiKj5brxYLD2L2zBO1/aS7TIdDVTf1KLKNKSJVfPqvltkvdusrOCcbId2DfWqZFq0HK6p3Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:23:06.705992Z"},"content_sha256":"1f57380b3d7bd094d48a1ad20b61e5ae6c73e7b000414047d6913927ee1b528f","schema_version":"1.0","event_id":"sha256:1f57380b3d7bd094d48a1ad20b61e5ae6c73e7b000414047d6913927ee1b528f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G6HG3FUNVQ7T7FRGXXXCANT6M5/bundle.json","state_url":"https://pith.science/pith/G6HG3FUNVQ7T7FRGXXXCANT6M5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G6HG3FUNVQ7T7FRGXXXCANT6M5/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":"2026-05-26T21:23:06Z","links":{"resolver":"https://pith.science/pith/G6HG3FUNVQ7T7FRGXXXCANT6M5","bundle":"https://pith.science/pith/G6HG3FUNVQ7T7FRGXXXCANT6M5/bundle.json","state":"https://pith.science/pith/G6HG3FUNVQ7T7FRGXXXCANT6M5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G6HG3FUNVQ7T7FRGXXXCANT6M5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:G6HG3FUNVQ7T7FRGXXXCANT6M5","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":"80065af8514c4c5505272d4469ebe4f74c971eb7c7e7d3eabc2241a7b51d7389","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-26T16:22:42Z","title_canon_sha256":"8708a4e722c7a66aa164dac4182b268883624fa5546c31389acfba5b54e2f7cb"},"schema_version":"1.0","source":{"id":"1605.08352","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.08352","created_at":"2026-05-18T01:02:39Z"},{"alias_kind":"arxiv_version","alias_value":"1605.08352v1","created_at":"2026-05-18T01:02:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.08352","created_at":"2026-05-18T01:02:39Z"},{"alias_kind":"pith_short_12","alias_value":"G6HG3FUNVQ7T","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"G6HG3FUNVQ7T7FRG","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"G6HG3FUN","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:1f57380b3d7bd094d48a1ad20b61e5ae6c73e7b000414047d6913927ee1b528f","target":"graph","created_at":"2026-05-18T01:02:39Z","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":"In the era of precision physics measurements at the LHC, efficient and exhaustive estimations of theoretical uncertainties play an increasingly crucial role. In the context of Monte Carlo (MC) event generators, the estimation of such uncertainties traditionally requires independent MC runs for each variation, for a linear increase in total run time. In this work, we report on an automated evaluation of the dominant (renormalization-scale and non-singular) perturbative uncertainties in the PYTHIA 8 event generator, with only a modest computational overhead. Each generated event is accompanied b","authors_text":"Astronomy, Australia), Batavia, Fermilab, IL USA (2) School of Physics, Monash University, P. Skands (2) ((1) Computing Division, S. Mrenna (1), Victoria","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-26T16:22:42Z","title":"Automated Parton-Shower Variations in Pythia 8"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.08352","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":"sha256:6154e204718aff5b429f13abe3340640184365fb0d72cd8aa8eaf668bdf5d6ea","target":"record","created_at":"2026-05-18T01:02:39Z","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":"80065af8514c4c5505272d4469ebe4f74c971eb7c7e7d3eabc2241a7b51d7389","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-05-26T16:22:42Z","title_canon_sha256":"8708a4e722c7a66aa164dac4182b268883624fa5546c31389acfba5b54e2f7cb"},"schema_version":"1.0","source":{"id":"1605.08352","kind":"arxiv","version":1}},"canonical_sha256":"378e6d968dac3f3f9626bdee20367e676e1d594b89a5c4b918501cdd9296d950","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"378e6d968dac3f3f9626bdee20367e676e1d594b89a5c4b918501cdd9296d950","first_computed_at":"2026-05-18T01:02:39.546641Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:39.546641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qpeeQZFkHijuaDUQNz96GmyupN79pSkuFPe117ofJ+ZI57E1HpVuUoqk5bBFauJK/xtsy5ap17bRqWuKFN5hAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:39.547405Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.08352","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6154e204718aff5b429f13abe3340640184365fb0d72cd8aa8eaf668bdf5d6ea","sha256:1f57380b3d7bd094d48a1ad20b61e5ae6c73e7b000414047d6913927ee1b528f"],"state_sha256":"d18b93d106a19376c92f33701372c1f349fb62cc46bcfd61ab48157b18798bfd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZHHj06sIOemF8UFtvAJ9Ce65pdqjS7eC5ioaYgH8Hj2taFDzZiEdCKp46BIcELpRCVGh8gdJdFZ288hMcrRNDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T21:23:06.709870Z","bundle_sha256":"401b6557bff0511c77fee5ccc32c4a722f00e730d3ac1ac73fbad90d56ca17d8"}}