{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:HECKOX656L7CPOBD2N523V2CS6","short_pith_number":"pith:HECKOX65","canonical_record":{"source":{"id":"1104.4421","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-04-22T11:55:43Z","cross_cats_sorted":[],"title_canon_sha256":"1193c4578a9f2aa6ddb458d8a164c1207cd18ad523f34bdfcea22fb214e080c7","abstract_canon_sha256":"abcaad8917b14b6196f2256bbceaab197c69981514a83f70b1719bde85c435dd"},"schema_version":"1.0"},"canonical_sha256":"3904a75fddf2fe27b823d37badd74297ad6650ef00c5102c4cc815aa0aff014c","source":{"kind":"arxiv","id":"1104.4421","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4421","created_at":"2026-05-18T04:22:21Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4421v1","created_at":"2026-05-18T04:22:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4421","created_at":"2026-05-18T04:22:21Z"},{"alias_kind":"pith_short_12","alias_value":"HECKOX656L7C","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HECKOX656L7CPOBD","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HECKOX65","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:HECKOX656L7CPOBD2N523V2CS6","target":"record","payload":{"canonical_record":{"source":{"id":"1104.4421","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-04-22T11:55:43Z","cross_cats_sorted":[],"title_canon_sha256":"1193c4578a9f2aa6ddb458d8a164c1207cd18ad523f34bdfcea22fb214e080c7","abstract_canon_sha256":"abcaad8917b14b6196f2256bbceaab197c69981514a83f70b1719bde85c435dd"},"schema_version":"1.0"},"canonical_sha256":"3904a75fddf2fe27b823d37badd74297ad6650ef00c5102c4cc815aa0aff014c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:22:21.666596Z","signature_b64":"+2J81hgQCMr29OLl8FKi2PyGgtBiT9BTQdUbrstCbfUuc55H4Vo07PHwIDd7nopnPRVfXxczjJdZTO8MvebSBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3904a75fddf2fe27b823d37badd74297ad6650ef00c5102c4cc815aa0aff014c","last_reissued_at":"2026-05-18T04:22:21.665896Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:22:21.665896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.4421","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":"2026-05-18T04:22:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mJ8yJNvzaCyyun284RbF8+SQ4HpNsdUFZw4xWNo1fHLYfTaaizTlEFImrKFQC0OkeK1ka6RprZBRcET3TU5JBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:13:49.288108Z"},"content_sha256":"b56db2c2ddab948072a952edb448384cf9e73a4ae96be9345547fbdabdceb29d","schema_version":"1.0","event_id":"sha256:b56db2c2ddab948072a952edb448384cf9e73a4ae96be9345547fbdabdceb29d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:HECKOX656L7CPOBD2N523V2CS6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hydrogen Spectroscopy with a Lamb-shift Polarimeter - An Alternative Approach Towards Anti-Hydrogen Spectroscopy Experiments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A. Vasilyev, F. Rathmann, G. Schug, H. Paetz gen. Schieck, H. Str\\\"oher, K. Grigoryev, M. Mikirtytchiants, M.P. Westig, R. Engels","submitted_at":"2011-04-22T11:55:43Z","abstract_excerpt":"A Lamb-shift polarimeter, which has been built for a fast determination of the polarization of protons and deuterons of an atomic-beam source and which is frequently used in the ANKE experiment at COSY-J\\\"ulich, is shown to be an excellent device for atomic-spectroscopy measurements of metastable hydrogen isotopes. It is demonstrated that magnetic and electric dipole transitions in hydrogen can be measured as a function of the external magnetic field, giving access to the full Breit-Rabi diagram for the $2^2S_{1/2}$ and the $2^2P_{1/2}$ states. This will allow the study of hyperfine structure,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4421","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":"2026-05-18T04:22:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fHMTOpg55x9LQB3zKQ2C6MLBRpBTT2xbuMWyxmDee8RQIxzVVgeFYufe3mx0/LqWfzJihc8KaPtb9/ANzrKqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:13:49.288502Z"},"content_sha256":"0b5c6e124d68ea2a704115c92dd5c3c510381e5f31b14594e2a629fac7502e55","schema_version":"1.0","event_id":"sha256:0b5c6e124d68ea2a704115c92dd5c3c510381e5f31b14594e2a629fac7502e55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HECKOX656L7CPOBD2N523V2CS6/bundle.json","state_url":"https://pith.science/pith/HECKOX656L7CPOBD2N523V2CS6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HECKOX656L7CPOBD2N523V2CS6/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":"2026-05-27T23:13:49Z","links":{"resolver":"https://pith.science/pith/HECKOX656L7CPOBD2N523V2CS6","bundle":"https://pith.science/pith/HECKOX656L7CPOBD2N523V2CS6/bundle.json","state":"https://pith.science/pith/HECKOX656L7CPOBD2N523V2CS6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HECKOX656L7CPOBD2N523V2CS6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:HECKOX656L7CPOBD2N523V2CS6","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":"abcaad8917b14b6196f2256bbceaab197c69981514a83f70b1719bde85c435dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-04-22T11:55:43Z","title_canon_sha256":"1193c4578a9f2aa6ddb458d8a164c1207cd18ad523f34bdfcea22fb214e080c7"},"schema_version":"1.0","source":{"id":"1104.4421","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4421","created_at":"2026-05-18T04:22:21Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4421v1","created_at":"2026-05-18T04:22:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4421","created_at":"2026-05-18T04:22:21Z"},{"alias_kind":"pith_short_12","alias_value":"HECKOX656L7C","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HECKOX656L7CPOBD","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HECKOX65","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:0b5c6e124d68ea2a704115c92dd5c3c510381e5f31b14594e2a629fac7502e55","target":"graph","created_at":"2026-05-18T04:22:21Z","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":"A Lamb-shift polarimeter, which has been built for a fast determination of the polarization of protons and deuterons of an atomic-beam source and which is frequently used in the ANKE experiment at COSY-J\\\"ulich, is shown to be an excellent device for atomic-spectroscopy measurements of metastable hydrogen isotopes. It is demonstrated that magnetic and electric dipole transitions in hydrogen can be measured as a function of the external magnetic field, giving access to the full Breit-Rabi diagram for the $2^2S_{1/2}$ and the $2^2P_{1/2}$ states. This will allow the study of hyperfine structure,","authors_text":"A. Vasilyev, F. Rathmann, G. Schug, H. Paetz gen. Schieck, H. Str\\\"oher, K. Grigoryev, M. Mikirtytchiants, M.P. Westig, R. Engels","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-04-22T11:55:43Z","title":"Hydrogen Spectroscopy with a Lamb-shift Polarimeter - An Alternative Approach Towards Anti-Hydrogen Spectroscopy Experiments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4421","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:b56db2c2ddab948072a952edb448384cf9e73a4ae96be9345547fbdabdceb29d","target":"record","created_at":"2026-05-18T04:22:21Z","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":"abcaad8917b14b6196f2256bbceaab197c69981514a83f70b1719bde85c435dd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-04-22T11:55:43Z","title_canon_sha256":"1193c4578a9f2aa6ddb458d8a164c1207cd18ad523f34bdfcea22fb214e080c7"},"schema_version":"1.0","source":{"id":"1104.4421","kind":"arxiv","version":1}},"canonical_sha256":"3904a75fddf2fe27b823d37badd74297ad6650ef00c5102c4cc815aa0aff014c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3904a75fddf2fe27b823d37badd74297ad6650ef00c5102c4cc815aa0aff014c","first_computed_at":"2026-05-18T04:22:21.665896Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:22:21.665896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+2J81hgQCMr29OLl8FKi2PyGgtBiT9BTQdUbrstCbfUuc55H4Vo07PHwIDd7nopnPRVfXxczjJdZTO8MvebSBg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:22:21.666596Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.4421","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b56db2c2ddab948072a952edb448384cf9e73a4ae96be9345547fbdabdceb29d","sha256:0b5c6e124d68ea2a704115c92dd5c3c510381e5f31b14594e2a629fac7502e55"],"state_sha256":"d04b508c7721bcf2308ea0f2f644b1fcc4f9ac1483bab0b0d590389c40ed0c1c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zXW0vIvMlYcsAqRTpfNlaMAch1399u8K0jJVG2eINsdAWRZYwLprLnUQV022tVepcfZ3nFDfrsTwb+2BFlvACA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T23:13:49.292036Z","bundle_sha256":"5db62390e046c927a34a1d299017a47b550c9cc390f8b72506fc96f6a113bc1c"}}