{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SXP4CMXK3OWPGA2MMP76WOQFSQ","short_pith_number":"pith:SXP4CMXK","canonical_record":{"source":{"id":"1512.01765","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-06T10:00:15Z","cross_cats_sorted":[],"title_canon_sha256":"546533709ff12af055f8880ce896a7b941b45e5c29961acf3c56e6e6b8180cb5","abstract_canon_sha256":"42a37bd905607e9a476fbcb30b70efe175db958f464e535fb6ac14da47bd82ba"},"schema_version":"1.0"},"canonical_sha256":"95dfc132eadbacf3034c63ffeb3a059403893e06626dbb6747355b56769d1ea3","source":{"kind":"arxiv","id":"1512.01765","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01765","created_at":"2026-05-18T01:09:29Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01765v2","created_at":"2026-05-18T01:09:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01765","created_at":"2026-05-18T01:09:29Z"},{"alias_kind":"pith_short_12","alias_value":"SXP4CMXK3OWP","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SXP4CMXK3OWPGA2M","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SXP4CMXK","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SXP4CMXK3OWPGA2MMP76WOQFSQ","target":"record","payload":{"canonical_record":{"source":{"id":"1512.01765","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-06T10:00:15Z","cross_cats_sorted":[],"title_canon_sha256":"546533709ff12af055f8880ce896a7b941b45e5c29961acf3c56e6e6b8180cb5","abstract_canon_sha256":"42a37bd905607e9a476fbcb30b70efe175db958f464e535fb6ac14da47bd82ba"},"schema_version":"1.0"},"canonical_sha256":"95dfc132eadbacf3034c63ffeb3a059403893e06626dbb6747355b56769d1ea3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:29.642120Z","signature_b64":"uKetD/UuR8GzNpAvsmk9kVwrkOC9ZhHacMe9TcWhItFhJj0PNhSuJylZ8/7UKqzcpAlQ+Qz6WRWo3sBgcjMTCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95dfc132eadbacf3034c63ffeb3a059403893e06626dbb6747355b56769d1ea3","last_reissued_at":"2026-05-18T01:09:29.641721Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:29.641721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.01765","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":"2026-05-18T01:09:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/77y1LdMvLjOCFnai8u93nV/ZQmTB6/jUGbLsekrRaJqqUKHsV+1O8EqFIHR6yX1sCuLQwowLyYk6qdOul5pDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T04:59:03.677744Z"},"content_sha256":"395b564f3160823beed9cf01dba176e91f02dafc83c687091187bc1beab8a99e","schema_version":"1.0","event_id":"sha256:395b564f3160823beed9cf01dba176e91f02dafc83c687091187bc1beab8a99e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SXP4CMXK3OWPGA2MMP76WOQFSQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Muonic atoms and the nuclear structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Aldo Antognini","submitted_at":"2015-12-06T10:00:15Z","abstract_excerpt":"High-precision laser spectroscopy of atomic energy levels enables the measurement of nuclear properties. Sensitivity to these properties is particularly enhanced in muonic atoms which are bound systems of a muon and a nucleus. Exemplary is the measurement of the proton charge radius from muonic hydrogen performed by the CREMA collaboration which resulted in an order of magnitude more precise charge radius as extracted from other methods but at a variance of 7 standard deviations. Here, we summarize the role of muonic atoms for the extraction of nuclear charge radii, we present the status of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01765","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":"2026-05-18T01:09:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+ZamzdIp00S8WxUdkLWeqpSIuA1aIhpHaKP4kBX+zubLDkp+hoHz2zZ1cNF/byTMg1uxV4JU970wKStPw+CvDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T04:59:03.678104Z"},"content_sha256":"80041642e945aa24408f35a07106ca69cddb9ace945e1187d63a7f70b62db788","schema_version":"1.0","event_id":"sha256:80041642e945aa24408f35a07106ca69cddb9ace945e1187d63a7f70b62db788"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SXP4CMXK3OWPGA2MMP76WOQFSQ/bundle.json","state_url":"https://pith.science/pith/SXP4CMXK3OWPGA2MMP76WOQFSQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SXP4CMXK3OWPGA2MMP76WOQFSQ/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":"2026-06-12T04:59:03Z","links":{"resolver":"https://pith.science/pith/SXP4CMXK3OWPGA2MMP76WOQFSQ","bundle":"https://pith.science/pith/SXP4CMXK3OWPGA2MMP76WOQFSQ/bundle.json","state":"https://pith.science/pith/SXP4CMXK3OWPGA2MMP76WOQFSQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SXP4CMXK3OWPGA2MMP76WOQFSQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SXP4CMXK3OWPGA2MMP76WOQFSQ","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":"42a37bd905607e9a476fbcb30b70efe175db958f464e535fb6ac14da47bd82ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-06T10:00:15Z","title_canon_sha256":"546533709ff12af055f8880ce896a7b941b45e5c29961acf3c56e6e6b8180cb5"},"schema_version":"1.0","source":{"id":"1512.01765","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01765","created_at":"2026-05-18T01:09:29Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01765v2","created_at":"2026-05-18T01:09:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01765","created_at":"2026-05-18T01:09:29Z"},{"alias_kind":"pith_short_12","alias_value":"SXP4CMXK3OWP","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SXP4CMXK3OWPGA2M","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SXP4CMXK","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:80041642e945aa24408f35a07106ca69cddb9ace945e1187d63a7f70b62db788","target":"graph","created_at":"2026-05-18T01:09:29Z","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":"High-precision laser spectroscopy of atomic energy levels enables the measurement of nuclear properties. Sensitivity to these properties is particularly enhanced in muonic atoms which are bound systems of a muon and a nucleus. Exemplary is the measurement of the proton charge radius from muonic hydrogen performed by the CREMA collaboration which resulted in an order of magnitude more precise charge radius as extracted from other methods but at a variance of 7 standard deviations. Here, we summarize the role of muonic atoms for the extraction of nuclear charge radii, we present the status of th","authors_text":"Aldo Antognini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-06T10:00:15Z","title":"Muonic atoms and the nuclear structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01765","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":"sha256:395b564f3160823beed9cf01dba176e91f02dafc83c687091187bc1beab8a99e","target":"record","created_at":"2026-05-18T01:09:29Z","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":"42a37bd905607e9a476fbcb30b70efe175db958f464e535fb6ac14da47bd82ba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2015-12-06T10:00:15Z","title_canon_sha256":"546533709ff12af055f8880ce896a7b941b45e5c29961acf3c56e6e6b8180cb5"},"schema_version":"1.0","source":{"id":"1512.01765","kind":"arxiv","version":2}},"canonical_sha256":"95dfc132eadbacf3034c63ffeb3a059403893e06626dbb6747355b56769d1ea3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95dfc132eadbacf3034c63ffeb3a059403893e06626dbb6747355b56769d1ea3","first_computed_at":"2026-05-18T01:09:29.641721Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:29.641721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uKetD/UuR8GzNpAvsmk9kVwrkOC9ZhHacMe9TcWhItFhJj0PNhSuJylZ8/7UKqzcpAlQ+Qz6WRWo3sBgcjMTCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:29.642120Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.01765","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:395b564f3160823beed9cf01dba176e91f02dafc83c687091187bc1beab8a99e","sha256:80041642e945aa24408f35a07106ca69cddb9ace945e1187d63a7f70b62db788"],"state_sha256":"cc245c45717c9d1c82fe5cbcb82594f9a0023543e26237218fb83f5bf26e29b4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hUuoFgNBoIc3uPA9itPzoVxb4MzlOoPPJcpZJwbmtf6FGJFfWiPg6e8cJb+/wedUAmPuyIhNg9BE4N+5lpqvBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T04:59:03.680280Z","bundle_sha256":"bd353fd2726afc89f34fbca9fb99f13a2437df6b35dba295acce548d20af2765"}}