{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:K6GXM5FMZOHU6W7YE42CDPE5RM","short_pith_number":"pith:K6GXM5FM","canonical_record":{"source":{"id":"1406.7521","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-06-29T16:14:38Z","cross_cats_sorted":[],"title_canon_sha256":"599cbdd5801f2aa8dce9dac32f8f797bf024ed0b91c931eaa1129624d99ff25a","abstract_canon_sha256":"036053e7d1e9e4d963da5127d299ff591796e3e88e380b372b4e51e05cdf533c"},"schema_version":"1.0"},"canonical_sha256":"578d7674accb8f4f5bf8273421bc9d8b15c5f12c9a8848022360a8d0e083d4ea","source":{"kind":"arxiv","id":"1406.7521","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.7521","created_at":"2026-05-18T02:18:01Z"},{"alias_kind":"arxiv_version","alias_value":"1406.7521v4","created_at":"2026-05-18T02:18:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.7521","created_at":"2026-05-18T02:18:01Z"},{"alias_kind":"pith_short_12","alias_value":"K6GXM5FMZOHU","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"K6GXM5FMZOHU6W7Y","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"K6GXM5FM","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:K6GXM5FMZOHU6W7YE42CDPE5RM","target":"record","payload":{"canonical_record":{"source":{"id":"1406.7521","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-06-29T16:14:38Z","cross_cats_sorted":[],"title_canon_sha256":"599cbdd5801f2aa8dce9dac32f8f797bf024ed0b91c931eaa1129624d99ff25a","abstract_canon_sha256":"036053e7d1e9e4d963da5127d299ff591796e3e88e380b372b4e51e05cdf533c"},"schema_version":"1.0"},"canonical_sha256":"578d7674accb8f4f5bf8273421bc9d8b15c5f12c9a8848022360a8d0e083d4ea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:18:01.391435Z","signature_b64":"uMcfRNnxg80jlfrNCRDBYy9CDSg9kyLRHo5GMvmj+b+/Gfdd84h+SL24vC7KQGesmNlU8FCPOvPeuTA9T5CIAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"578d7674accb8f4f5bf8273421bc9d8b15c5f12c9a8848022360a8d0e083d4ea","last_reissued_at":"2026-05-18T02:18:01.390816Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:18:01.390816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.7521","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:18:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wvm+Nul/UMQ4zEi0Qz787soG1ptR9D6kF/fcK5N3dPhGToDPh+9ZkV7WkqvIV1exGL4WDpoYk8tbG8zqNYvACA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:03:43.601418Z"},"content_sha256":"fc1fc98d8141eaa122f686df5d666fa4fb2bc2948ac0a8e718af49b7e1399739","schema_version":"1.0","event_id":"sha256:fc1fc98d8141eaa122f686df5d666fa4fb2bc2948ac0a8e718af49b7e1399739"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:K6GXM5FMZOHU6W7YE42CDPE5RM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Current progress in laser cooling of antihydrogen","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A.A. Golubev, E.V. Luschevskaya","submitted_at":"2014-06-29T16:14:38Z","abstract_excerpt":"We discuss laser cooling methods of (anti)hydrogen and its importance for current and future experiments. The exploration of antimatter presents a great interest for $CERN$ and $GSI$ experiments aimed at check of quantum mechanics laws, fundamental symmetries of nature and gravity and investigations in atomic and nuclear physics. The spectral transition $1S\\rightarrow 2P$ in $\\bar{H} (H)$ atom is the most suitable for laser cooling due to a small lifetime of $2P$ state and insignificant ionization losses. However the pulsed and continuous laser sources at Lyman-$\\alpha$ wavelength do not posse"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.7521","kind":"arxiv","version":4},"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":"2026-05-18T02:18:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hUbtjaAQEgmaZdwUiQS9VsuLYbGpKvVOoemHDuAx1b+2Lk6nj58SlNQTMl3/uZaZb4vEyTSdS8DwNLjCP4agAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:03:43.601769Z"},"content_sha256":"78757917db71f336195c5caea5c0639ee0bef22bc226243f96fd7e34e743cce5","schema_version":"1.0","event_id":"sha256:78757917db71f336195c5caea5c0639ee0bef22bc226243f96fd7e34e743cce5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K6GXM5FMZOHU6W7YE42CDPE5RM/bundle.json","state_url":"https://pith.science/pith/K6GXM5FMZOHU6W7YE42CDPE5RM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K6GXM5FMZOHU6W7YE42CDPE5RM/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":"2026-06-01T14:03:43Z","links":{"resolver":"https://pith.science/pith/K6GXM5FMZOHU6W7YE42CDPE5RM","bundle":"https://pith.science/pith/K6GXM5FMZOHU6W7YE42CDPE5RM/bundle.json","state":"https://pith.science/pith/K6GXM5FMZOHU6W7YE42CDPE5RM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K6GXM5FMZOHU6W7YE42CDPE5RM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:K6GXM5FMZOHU6W7YE42CDPE5RM","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":"036053e7d1e9e4d963da5127d299ff591796e3e88e380b372b4e51e05cdf533c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-06-29T16:14:38Z","title_canon_sha256":"599cbdd5801f2aa8dce9dac32f8f797bf024ed0b91c931eaa1129624d99ff25a"},"schema_version":"1.0","source":{"id":"1406.7521","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.7521","created_at":"2026-05-18T02:18:01Z"},{"alias_kind":"arxiv_version","alias_value":"1406.7521v4","created_at":"2026-05-18T02:18:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.7521","created_at":"2026-05-18T02:18:01Z"},{"alias_kind":"pith_short_12","alias_value":"K6GXM5FMZOHU","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"K6GXM5FMZOHU6W7Y","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"K6GXM5FM","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:78757917db71f336195c5caea5c0639ee0bef22bc226243f96fd7e34e743cce5","target":"graph","created_at":"2026-05-18T02:18:01Z","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":"We discuss laser cooling methods of (anti)hydrogen and its importance for current and future experiments. The exploration of antimatter presents a great interest for $CERN$ and $GSI$ experiments aimed at check of quantum mechanics laws, fundamental symmetries of nature and gravity and investigations in atomic and nuclear physics. The spectral transition $1S\\rightarrow 2P$ in $\\bar{H} (H)$ atom is the most suitable for laser cooling due to a small lifetime of $2P$ state and insignificant ionization losses. However the pulsed and continuous laser sources at Lyman-$\\alpha$ wavelength do not posse","authors_text":"A.A. Golubev, E.V. Luschevskaya","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-06-29T16:14:38Z","title":"Current progress in laser cooling of antihydrogen"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.7521","kind":"arxiv","version":4},"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:fc1fc98d8141eaa122f686df5d666fa4fb2bc2948ac0a8e718af49b7e1399739","target":"record","created_at":"2026-05-18T02:18:01Z","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":"036053e7d1e9e4d963da5127d299ff591796e3e88e380b372b4e51e05cdf533c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-06-29T16:14:38Z","title_canon_sha256":"599cbdd5801f2aa8dce9dac32f8f797bf024ed0b91c931eaa1129624d99ff25a"},"schema_version":"1.0","source":{"id":"1406.7521","kind":"arxiv","version":4}},"canonical_sha256":"578d7674accb8f4f5bf8273421bc9d8b15c5f12c9a8848022360a8d0e083d4ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"578d7674accb8f4f5bf8273421bc9d8b15c5f12c9a8848022360a8d0e083d4ea","first_computed_at":"2026-05-18T02:18:01.390816Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:18:01.390816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uMcfRNnxg80jlfrNCRDBYy9CDSg9kyLRHo5GMvmj+b+/Gfdd84h+SL24vC7KQGesmNlU8FCPOvPeuTA9T5CIAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:18:01.391435Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.7521","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc1fc98d8141eaa122f686df5d666fa4fb2bc2948ac0a8e718af49b7e1399739","sha256:78757917db71f336195c5caea5c0639ee0bef22bc226243f96fd7e34e743cce5"],"state_sha256":"ece2e9bcc3121c746e9d6c4aa557efcfdad7a440a1757dc789073a8181aec05a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ho3AmqJ8VAvPoexCsxkIWZ0e9HMcJSTlF0Vp00r0N3Kkfhg3DArh1ZetoyyZkGabQyB45bgqu3i1pFZICnxxBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T14:03:43.603753Z","bundle_sha256":"b2b4efe5359caf61a93c087ea58ea40e1d9457c49778d574d8435a4a0c3a8b6e"}}