{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:R2KL7IWAVD3D5NUQ5URDOCIE44","short_pith_number":"pith:R2KL7IWA","canonical_record":{"source":{"id":"1107.1610","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-07-08T11:32:46Z","cross_cats_sorted":[],"title_canon_sha256":"f12cee7cb542b48820c0ed45729aa4bcf7d8a0fa7f13e845de7258c62c6bd8f9","abstract_canon_sha256":"78312fa4e1e0586805459e9e507a35ddae14e26f7e50ac6d6e22ae0fd8505823"},"schema_version":"1.0"},"canonical_sha256":"8e94bfa2c0a8f63eb690ed22370904e703055c9442a40cbcc5c0a866024fe5fd","source":{"kind":"arxiv","id":"1107.1610","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.1610","created_at":"2026-05-18T04:18:35Z"},{"alias_kind":"arxiv_version","alias_value":"1107.1610v1","created_at":"2026-05-18T04:18:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.1610","created_at":"2026-05-18T04:18:35Z"},{"alias_kind":"pith_short_12","alias_value":"R2KL7IWAVD3D","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"R2KL7IWAVD3D5NUQ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"R2KL7IWA","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:R2KL7IWAVD3D5NUQ5URDOCIE44","target":"record","payload":{"canonical_record":{"source":{"id":"1107.1610","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-07-08T11:32:46Z","cross_cats_sorted":[],"title_canon_sha256":"f12cee7cb542b48820c0ed45729aa4bcf7d8a0fa7f13e845de7258c62c6bd8f9","abstract_canon_sha256":"78312fa4e1e0586805459e9e507a35ddae14e26f7e50ac6d6e22ae0fd8505823"},"schema_version":"1.0"},"canonical_sha256":"8e94bfa2c0a8f63eb690ed22370904e703055c9442a40cbcc5c0a866024fe5fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:18:35.343764Z","signature_b64":"fVgbE6ZDPni0YlgJBnGGH/Eb3Mpy6MkM8gGZ0SbG0g9WHbt0QXzWzg/g0Kfd94roYVlkO7kktpW5cMpJliv6AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e94bfa2c0a8f63eb690ed22370904e703055c9442a40cbcc5c0a866024fe5fd","last_reissued_at":"2026-05-18T04:18:35.343300Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:18:35.343300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.1610","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":"2026-05-18T04:18:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r3gkL5A3UtiIwWboJMK+1UO1QJ2RF/Onf73UeVmk2mCfaksszFuz5eAEQOktIb3J7ZmJJdw8jzOivbm2IsiyBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T04:59:58.632958Z"},"content_sha256":"4b3b89bae6097fd8f5142a9352d8929d3d0d36fbfa8398a781d56e166b47c612","schema_version":"1.0","event_id":"sha256:4b3b89bae6097fd8f5142a9352d8929d3d0d36fbfa8398a781d56e166b47c612"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:R2KL7IWAVD3D5NUQ5URDOCIE44","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Remarks on the proton charge radius","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Hirohisa Ishikawa, Keiji Watanabe","submitted_at":"2011-07-08T11:32:46Z","abstract_excerpt":"Proton charge radius is calculated from the electromagnetic form factor of proton parameterized by the dispersion relation.\n  The calculated charge radius is a little larger than that obtained by the Lamb shift of the $\\mu$ mesic atom. As the result is sensitive to the experimental data of proton electric form factor at small momentum transfer, more accurate data are required to draw conclusion if the result of the nucleon form factor is different or not from that obtained Pohl et al."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.1610","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":"2026-05-18T04:18:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PcJ51X0vBmbDv/cWpyC0E4LtPfg4Q03hPLOpwWUlTNIg9flmnp9XLSarMQnU1upBOjtjeObWiOYsNQ7/ohyuDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T04:59:58.633296Z"},"content_sha256":"460a2247c824dc4d49f33cd3cf3da5bd745e3a618f7b2d57b8385d5e71d5a95b","schema_version":"1.0","event_id":"sha256:460a2247c824dc4d49f33cd3cf3da5bd745e3a618f7b2d57b8385d5e71d5a95b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R2KL7IWAVD3D5NUQ5URDOCIE44/bundle.json","state_url":"https://pith.science/pith/R2KL7IWAVD3D5NUQ5URDOCIE44/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R2KL7IWAVD3D5NUQ5URDOCIE44/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":"2026-07-02T04:59:58Z","links":{"resolver":"https://pith.science/pith/R2KL7IWAVD3D5NUQ5URDOCIE44","bundle":"https://pith.science/pith/R2KL7IWAVD3D5NUQ5URDOCIE44/bundle.json","state":"https://pith.science/pith/R2KL7IWAVD3D5NUQ5URDOCIE44/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R2KL7IWAVD3D5NUQ5URDOCIE44/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:R2KL7IWAVD3D5NUQ5URDOCIE44","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":"78312fa4e1e0586805459e9e507a35ddae14e26f7e50ac6d6e22ae0fd8505823","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-07-08T11:32:46Z","title_canon_sha256":"f12cee7cb542b48820c0ed45729aa4bcf7d8a0fa7f13e845de7258c62c6bd8f9"},"schema_version":"1.0","source":{"id":"1107.1610","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.1610","created_at":"2026-05-18T04:18:35Z"},{"alias_kind":"arxiv_version","alias_value":"1107.1610v1","created_at":"2026-05-18T04:18:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.1610","created_at":"2026-05-18T04:18:35Z"},{"alias_kind":"pith_short_12","alias_value":"R2KL7IWAVD3D","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"R2KL7IWAVD3D5NUQ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"R2KL7IWA","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:460a2247c824dc4d49f33cd3cf3da5bd745e3a618f7b2d57b8385d5e71d5a95b","target":"graph","created_at":"2026-05-18T04:18:35Z","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":"Proton charge radius is calculated from the electromagnetic form factor of proton parameterized by the dispersion relation.\n  The calculated charge radius is a little larger than that obtained by the Lamb shift of the $\\mu$ mesic atom. As the result is sensitive to the experimental data of proton electric form factor at small momentum transfer, more accurate data are required to draw conclusion if the result of the nucleon form factor is different or not from that obtained Pohl et al.","authors_text":"Hirohisa Ishikawa, Keiji Watanabe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-07-08T11:32:46Z","title":"Remarks on the proton charge radius"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.1610","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":"sha256:4b3b89bae6097fd8f5142a9352d8929d3d0d36fbfa8398a781d56e166b47c612","target":"record","created_at":"2026-05-18T04:18:35Z","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":"78312fa4e1e0586805459e9e507a35ddae14e26f7e50ac6d6e22ae0fd8505823","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-07-08T11:32:46Z","title_canon_sha256":"f12cee7cb542b48820c0ed45729aa4bcf7d8a0fa7f13e845de7258c62c6bd8f9"},"schema_version":"1.0","source":{"id":"1107.1610","kind":"arxiv","version":1}},"canonical_sha256":"8e94bfa2c0a8f63eb690ed22370904e703055c9442a40cbcc5c0a866024fe5fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e94bfa2c0a8f63eb690ed22370904e703055c9442a40cbcc5c0a866024fe5fd","first_computed_at":"2026-05-18T04:18:35.343300Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:18:35.343300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fVgbE6ZDPni0YlgJBnGGH/Eb3Mpy6MkM8gGZ0SbG0g9WHbt0QXzWzg/g0Kfd94roYVlkO7kktpW5cMpJliv6AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:18:35.343764Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.1610","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b3b89bae6097fd8f5142a9352d8929d3d0d36fbfa8398a781d56e166b47c612","sha256:460a2247c824dc4d49f33cd3cf3da5bd745e3a618f7b2d57b8385d5e71d5a95b"],"state_sha256":"799cd342eb699959030ee06b1912871e0b9801245dd7e07562b43d4d5c2fd913"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/YjqZiSKfcxhjKAv4Ao6UT1/GIHan9TAnAHkcRJrUsF741fLEnQ4LE0M+fJF8TR+oNrFw5QAimFpQBpXZdA3Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T04:59:58.635276Z","bundle_sha256":"c86c9095640ae722d3b6fb9f456ce2832bf51067b18025897c61b1411ecdebf7"}}