{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PSP6TCUMOAIAXC77ZHIQ75WARX","short_pith_number":"pith:PSP6TCUM","canonical_record":{"source":{"id":"1510.07100","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-10-24T02:52:53Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"5449698231e21526f239bd1f66e262e335cd330e89821cb63f5fac49fe12f864","abstract_canon_sha256":"1c440197c56b483958a2205f33cb44dba7ddc6910cae62510b7816dd0fdfef23"},"schema_version":"1.0"},"canonical_sha256":"7c9fe98a8c70100b8bffc9d10ff6c08de3b11b8c745eef54eefecd5d2668e2a2","source":{"kind":"arxiv","id":"1510.07100","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07100","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07100v1","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07100","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"pith_short_12","alias_value":"PSP6TCUMOAIA","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PSP6TCUMOAIAXC77","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PSP6TCUM","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PSP6TCUMOAIAXC77ZHIQ75WARX","target":"record","payload":{"canonical_record":{"source":{"id":"1510.07100","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-10-24T02:52:53Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"5449698231e21526f239bd1f66e262e335cd330e89821cb63f5fac49fe12f864","abstract_canon_sha256":"1c440197c56b483958a2205f33cb44dba7ddc6910cae62510b7816dd0fdfef23"},"schema_version":"1.0"},"canonical_sha256":"7c9fe98a8c70100b8bffc9d10ff6c08de3b11b8c745eef54eefecd5d2668e2a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:33.750969Z","signature_b64":"iwHvId5VSiJQQ7+GCKWSrJdL2otxKwA3FoFWAbi+kfRJYANYcZZoRLc8UxkQ4q8X5EA/XnVg05L2wJa9Ram0Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c9fe98a8c70100b8bffc9d10ff6c08de3b11b8c745eef54eefecd5d2668e2a2","last_reissued_at":"2026-05-18T01:22:33.750508Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:33.750508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.07100","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":"2026-05-18T01:22:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"idhoF+w0zm3LHUOMYFfi9V7aVPcVyRKb7EsmlRVwYQdth4+ZfaI/yHIdBNLhN+NUzM+tNPAH6I3LTFKwWK9MDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:09:08.427527Z"},"content_sha256":"2b3e4c27086c19dc116f3421c5b5948148c9c2cd05c00f23503c0a454ddb5a32","schema_version":"1.0","event_id":"sha256:2b3e4c27086c19dc116f3421c5b5948148c9c2cd05c00f23503c0a454ddb5a32"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PSP6TCUMOAIAXC77ZHIQ75WARX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lattice Calculation of Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"Christoph Lehner, Luchang Jin, Masashi Hayakawa, Norman Christ, Taku Izubuchi, Thomas Blum","submitted_at":"2015-10-24T02:52:53Z","abstract_excerpt":"The quark-connected part of the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment is computed using lattice QCD with chiral fermions. We report several significant algorithmic improvements and demonstrate their effectiveness through specific calculations which show a reduction in statistical errors by more than an order of magnitude. The most realistic of these calculations is performed with a near-physical, $171$ MeV pion mass on a $(4.6\\;\\mathrm{fm})^3$ spatial volume using the $32^3\\times 64$ Iwasaki+DSDR gauge ensemble of the RBC/UKQCD Collaboration."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07100","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":"2026-05-18T01:22:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KbYzLZ5EbUPoBUTSVdN2kLIKDAvwquRkIliRu72zThkhV2Rhk47Edm366657+7gwytkW1GV+wvq/xxydP6l4Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:09:08.427925Z"},"content_sha256":"f7a9cab6b4a48878bdf99b434e9538c3616b0fb0c09c24757931ff9fdba3f4c8","schema_version":"1.0","event_id":"sha256:f7a9cab6b4a48878bdf99b434e9538c3616b0fb0c09c24757931ff9fdba3f4c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PSP6TCUMOAIAXC77ZHIQ75WARX/bundle.json","state_url":"https://pith.science/pith/PSP6TCUMOAIAXC77ZHIQ75WARX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PSP6TCUMOAIAXC77ZHIQ75WARX/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":"2026-05-28T11:09:08Z","links":{"resolver":"https://pith.science/pith/PSP6TCUMOAIAXC77ZHIQ75WARX","bundle":"https://pith.science/pith/PSP6TCUMOAIAXC77ZHIQ75WARX/bundle.json","state":"https://pith.science/pith/PSP6TCUMOAIAXC77ZHIQ75WARX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PSP6TCUMOAIAXC77ZHIQ75WARX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PSP6TCUMOAIAXC77ZHIQ75WARX","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":"1c440197c56b483958a2205f33cb44dba7ddc6910cae62510b7816dd0fdfef23","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-10-24T02:52:53Z","title_canon_sha256":"5449698231e21526f239bd1f66e262e335cd330e89821cb63f5fac49fe12f864"},"schema_version":"1.0","source":{"id":"1510.07100","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07100","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07100v1","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07100","created_at":"2026-05-18T01:22:33Z"},{"alias_kind":"pith_short_12","alias_value":"PSP6TCUMOAIA","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PSP6TCUMOAIAXC77","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PSP6TCUM","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:f7a9cab6b4a48878bdf99b434e9538c3616b0fb0c09c24757931ff9fdba3f4c8","target":"graph","created_at":"2026-05-18T01:22:33Z","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":"The quark-connected part of the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment is computed using lattice QCD with chiral fermions. We report several significant algorithmic improvements and demonstrate their effectiveness through specific calculations which show a reduction in statistical errors by more than an order of magnitude. The most realistic of these calculations is performed with a near-physical, $171$ MeV pion mass on a $(4.6\\;\\mathrm{fm})^3$ spatial volume using the $32^3\\times 64$ Iwasaki+DSDR gauge ensemble of the RBC/UKQCD Collaboration.","authors_text":"Christoph Lehner, Luchang Jin, Masashi Hayakawa, Norman Christ, Taku Izubuchi, Thomas Blum","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-10-24T02:52:53Z","title":"Lattice Calculation of Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07100","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":"sha256:2b3e4c27086c19dc116f3421c5b5948148c9c2cd05c00f23503c0a454ddb5a32","target":"record","created_at":"2026-05-18T01:22:33Z","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":"1c440197c56b483958a2205f33cb44dba7ddc6910cae62510b7816dd0fdfef23","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2015-10-24T02:52:53Z","title_canon_sha256":"5449698231e21526f239bd1f66e262e335cd330e89821cb63f5fac49fe12f864"},"schema_version":"1.0","source":{"id":"1510.07100","kind":"arxiv","version":1}},"canonical_sha256":"7c9fe98a8c70100b8bffc9d10ff6c08de3b11b8c745eef54eefecd5d2668e2a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c9fe98a8c70100b8bffc9d10ff6c08de3b11b8c745eef54eefecd5d2668e2a2","first_computed_at":"2026-05-18T01:22:33.750508Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:33.750508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iwHvId5VSiJQQ7+GCKWSrJdL2otxKwA3FoFWAbi+kfRJYANYcZZoRLc8UxkQ4q8X5EA/XnVg05L2wJa9Ram0Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:33.750969Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07100","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b3e4c27086c19dc116f3421c5b5948148c9c2cd05c00f23503c0a454ddb5a32","sha256:f7a9cab6b4a48878bdf99b434e9538c3616b0fb0c09c24757931ff9fdba3f4c8"],"state_sha256":"6e0ed0df4f51816b560d66ae458c6d66c5f8d9bbf506775e44d91772e130d20c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MuabZ9A9846eXXDIduFc+uud77w2TXqtj8y+31w/5mrxt0yUHXOI/REHsYZuANVYJ7QKaCxzN0Dp2OcDMa2SDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T11:09:08.430133Z","bundle_sha256":"f711a46e7d7083fb1954b5adebf7604c0fb8bf33acdb12a2284e4b727283ec89"}}