{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:LJSJJ3ZW5HIKM7RBGKPQ3IMHXF","short_pith_number":"pith:LJSJJ3ZW","canonical_record":{"source":{"id":"1305.4552","kind":"arxiv","version":8},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T15:18:55Z","cross_cats_sorted":[],"title_canon_sha256":"230701ff3f1c8f3bfcaebe5c43c8dee8d8e2f0565c7764bbba6173492b55e324","abstract_canon_sha256":"790adfb23cab7be1728e7dc7bbb902b8b72ea957cb1c56395a206f6c16f0c681"},"schema_version":"1.0"},"canonical_sha256":"5a6494ef36e9d0a67e21329f0da187b975e1779b5a78070ac2d00eac6c8e778b","source":{"kind":"arxiv","id":"1305.4552","version":8},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.4552","created_at":"2026-05-18T02:28:40Z"},{"alias_kind":"arxiv_version","alias_value":"1305.4552v8","created_at":"2026-05-18T02:28:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.4552","created_at":"2026-05-18T02:28:40Z"},{"alias_kind":"pith_short_12","alias_value":"LJSJJ3ZW5HIK","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"LJSJJ3ZW5HIKM7RB","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"LJSJJ3ZW","created_at":"2026-05-18T12:27:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:LJSJJ3ZW5HIKM7RBGKPQ3IMHXF","target":"record","payload":{"canonical_record":{"source":{"id":"1305.4552","kind":"arxiv","version":8},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T15:18:55Z","cross_cats_sorted":[],"title_canon_sha256":"230701ff3f1c8f3bfcaebe5c43c8dee8d8e2f0565c7764bbba6173492b55e324","abstract_canon_sha256":"790adfb23cab7be1728e7dc7bbb902b8b72ea957cb1c56395a206f6c16f0c681"},"schema_version":"1.0"},"canonical_sha256":"5a6494ef36e9d0a67e21329f0da187b975e1779b5a78070ac2d00eac6c8e778b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:28:40.925112Z","signature_b64":"LNcMpQ8pbhkdqrgCVccHpvLIPTA3sLbBAcdKV2Q3PI4TxN1iRqxECg5fedXVtA94zKC+PXq137AwHpZ8k6y2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a6494ef36e9d0a67e21329f0da187b975e1779b5a78070ac2d00eac6c8e778b","last_reissued_at":"2026-05-18T02:28:40.924538Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:28:40.924538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.4552","source_version":8,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:28:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rcMJbaQlb0LIr8Dr7uw7bM3CjLtBmTQfyRTJOOFZFVjQZd0WtZLDe/udkfD5nz2PA+T/1+KSso/kxh9Gn3pFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:35:56.208761Z"},"content_sha256":"9fda054a4e4be91ff03c28f4f8de7ca5d48ecf9f269888e42ef91ecb8a93883b","schema_version":"1.0","event_id":"sha256:9fda054a4e4be91ff03c28f4f8de7ca5d48ecf9f269888e42ef91ecb8a93883b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:LJSJJ3ZW5HIKM7RBGKPQ3IMHXF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Solution to the Proton Radius Problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"D. Robson","submitted_at":"2013-05-20T15:18:55Z","abstract_excerpt":"The relationship between the electric form factors for the proton in the rest frame and in the Breit momentum frame is used to provide a value for the difference in the mean squared charge radius of the proton evaluated in the two frames. Associating the muonic-hydrogen data analysis for the proton charge radius of 0.84087 fm with the rest frame and associating the electron scattering with the Breit frame yields a prediction 0f 0.87944 fm for the proton radius in the relativistic frame. The most recent value deduced via electron scattering from the proton is 0.877(6)fm so that the frame depend"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.4552","kind":"arxiv","version":8},"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":"2026-05-18T02:28:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lCyOW0wG8mSYqbw4mrRhHXIeOscjgyWVo9IChvqNBkuU/UAqLwmqaxaCAY+uiDuNfdJJg4rs7IpezWOxX2JpBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:35:56.209100Z"},"content_sha256":"6242935ab77a594cecebda3a4f28ad5f3ce59a118db2e13f9bd06b6d420f43b5","schema_version":"1.0","event_id":"sha256:6242935ab77a594cecebda3a4f28ad5f3ce59a118db2e13f9bd06b6d420f43b5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LJSJJ3ZW5HIKM7RBGKPQ3IMHXF/bundle.json","state_url":"https://pith.science/pith/LJSJJ3ZW5HIKM7RBGKPQ3IMHXF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LJSJJ3ZW5HIKM7RBGKPQ3IMHXF/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":"2026-06-03T02:35:56Z","links":{"resolver":"https://pith.science/pith/LJSJJ3ZW5HIKM7RBGKPQ3IMHXF","bundle":"https://pith.science/pith/LJSJJ3ZW5HIKM7RBGKPQ3IMHXF/bundle.json","state":"https://pith.science/pith/LJSJJ3ZW5HIKM7RBGKPQ3IMHXF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LJSJJ3ZW5HIKM7RBGKPQ3IMHXF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:LJSJJ3ZW5HIKM7RBGKPQ3IMHXF","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":"790adfb23cab7be1728e7dc7bbb902b8b72ea957cb1c56395a206f6c16f0c681","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T15:18:55Z","title_canon_sha256":"230701ff3f1c8f3bfcaebe5c43c8dee8d8e2f0565c7764bbba6173492b55e324"},"schema_version":"1.0","source":{"id":"1305.4552","kind":"arxiv","version":8}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.4552","created_at":"2026-05-18T02:28:40Z"},{"alias_kind":"arxiv_version","alias_value":"1305.4552v8","created_at":"2026-05-18T02:28:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.4552","created_at":"2026-05-18T02:28:40Z"},{"alias_kind":"pith_short_12","alias_value":"LJSJJ3ZW5HIK","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"LJSJJ3ZW5HIKM7RB","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"LJSJJ3ZW","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:6242935ab77a594cecebda3a4f28ad5f3ce59a118db2e13f9bd06b6d420f43b5","target":"graph","created_at":"2026-05-18T02:28:40Z","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 relationship between the electric form factors for the proton in the rest frame and in the Breit momentum frame is used to provide a value for the difference in the mean squared charge radius of the proton evaluated in the two frames. Associating the muonic-hydrogen data analysis for the proton charge radius of 0.84087 fm with the rest frame and associating the electron scattering with the Breit frame yields a prediction 0f 0.87944 fm for the proton radius in the relativistic frame. The most recent value deduced via electron scattering from the proton is 0.877(6)fm so that the frame depend","authors_text":"D. Robson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T15:18:55Z","title":"Solution to the Proton Radius Problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.4552","kind":"arxiv","version":8},"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":"sha256:9fda054a4e4be91ff03c28f4f8de7ca5d48ecf9f269888e42ef91ecb8a93883b","target":"record","created_at":"2026-05-18T02:28:40Z","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":"790adfb23cab7be1728e7dc7bbb902b8b72ea957cb1c56395a206f6c16f0c681","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-05-20T15:18:55Z","title_canon_sha256":"230701ff3f1c8f3bfcaebe5c43c8dee8d8e2f0565c7764bbba6173492b55e324"},"schema_version":"1.0","source":{"id":"1305.4552","kind":"arxiv","version":8}},"canonical_sha256":"5a6494ef36e9d0a67e21329f0da187b975e1779b5a78070ac2d00eac6c8e778b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a6494ef36e9d0a67e21329f0da187b975e1779b5a78070ac2d00eac6c8e778b","first_computed_at":"2026-05-18T02:28:40.924538Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:28:40.924538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LNcMpQ8pbhkdqrgCVccHpvLIPTA3sLbBAcdKV2Q3PI4TxN1iRqxECg5fedXVtA94zKC+PXq137AwHpZ8k6y2CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:28:40.925112Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.4552","source_kind":"arxiv","source_version":8}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9fda054a4e4be91ff03c28f4f8de7ca5d48ecf9f269888e42ef91ecb8a93883b","sha256:6242935ab77a594cecebda3a4f28ad5f3ce59a118db2e13f9bd06b6d420f43b5"],"state_sha256":"44d79875a3b1ada2078e929fca0792beb68cc2bcccdfc447ebabf5eb6900955f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1wTq2Hc/CLOcuQ3o+mdERb75N04g9e9Bt2gQan9zBChoUzN+YITD4P29KlSghVqEjsiWejhUMgpdQBHeNfOEDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:35:56.211013Z","bundle_sha256":"38143defd61aa37a9cfd41bfb9b18ca3d62d4c8a1740cc6c6fda59038b9f0694"}}