{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:SIXDJGYNHZ6HXAV7MNH5B5JUR4","short_pith_number":"pith:SIXDJGYN","canonical_record":{"source":{"id":"physics/0508125","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"physics.plasm-ph","submitted_at":"2005-08-18T12:48:09Z","cross_cats_sorted":[],"title_canon_sha256":"7e3f012c8ef5822ccc9b110c1cae70408a31f9b81ecf54fec7ad567f227c9c9f","abstract_canon_sha256":"eeb3755238896cab5777b5c8365a9539f36d16e24ac05f0c75fb064e1b3559af"},"schema_version":"1.0"},"canonical_sha256":"922e349b0d3e7c7b82bf634fd0f5348f2b52c4e19555c3013ca6c42883003a60","source":{"kind":"arxiv","id":"physics/0508125","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0508125","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0508125v2","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0508125","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"SIXDJGYNHZ6H","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"pith_short_16","alias_value":"SIXDJGYNHZ6HXAV7","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"pith_short_8","alias_value":"SIXDJGYN","created_at":"2026-07-04T16:57:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:SIXDJGYNHZ6HXAV7MNH5B5JUR4","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0508125","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"physics.plasm-ph","submitted_at":"2005-08-18T12:48:09Z","cross_cats_sorted":[],"title_canon_sha256":"7e3f012c8ef5822ccc9b110c1cae70408a31f9b81ecf54fec7ad567f227c9c9f","abstract_canon_sha256":"eeb3755238896cab5777b5c8365a9539f36d16e24ac05f0c75fb064e1b3559af"},"schema_version":"1.0"},"canonical_sha256":"922e349b0d3e7c7b82bf634fd0f5348f2b52c4e19555c3013ca6c42883003a60","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:57:18.101229Z","signature_b64":"PIXj2x1PXDsT71yGdONbu23UgSs6ENmFIHE1ZLSgLVXzXiVAivTEj/K74VhbvVdTjmT2U3kcgLVN7y57ViMuDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"922e349b0d3e7c7b82bf634fd0f5348f2b52c4e19555c3013ca6c42883003a60","last_reissued_at":"2026-07-04T16:57:18.100831Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:57:18.100831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0508125","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":"2026-07-04T16:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PKhpNpfvOu+FLGOG97fsUK+hTHkq2SVwh75KUEGyVdCJQlxscmUzlHPY19who8zDqGTXuhjC4mT51f04w0f8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T06:12:57.206493Z"},"content_sha256":"8fc837d9b777566af442d058f6afd4735a117a3bcd62b25f4f4f0ef930bc3c43","schema_version":"1.0","event_id":"sha256:8fc837d9b777566af442d058f6afd4735a117a3bcd62b25f4f4f0ef930bc3c43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:SIXDJGYNHZ6HXAV7MNH5B5JUR4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of Three-dimensional Long-range Order in Smaller Ion Coulomb Crystals in an rf Trap","license":"","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"A. Mortensen, E. Nielsen, M. Drewsen, T. Matthey","submitted_at":"2005-08-18T12:48:09Z","abstract_excerpt":"Three-dimensional long-range ordered structures in smaller and near-spherically symmetric Coulomb crystals of ^{40}Ca^+ ions confined in a linear rf Paul trap have been observed when the number of ions exceeds ~1000 ions. This result is unexpected from ground state molecular dynamics (MD) simulations, but found to be in agreement with MD simulations of metastable ion configurations. Previously, three-dimensional long-range ordered structures have only been reported in Penning traps in systems of ~50,000 ions or more."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0508125","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/physics/0508125/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jF9wsdebeotVnZ+5vM0mWuxtncUthMbPdvxFJgcx/yXwEy5BLZ3ApIWxMSPCE2ftyCSCpnUcoqejVQwh43H6Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T06:12:57.207403Z"},"content_sha256":"4c98a1183b9179ec7748019077d8cfeac5e64341ae555565ebdf16840d43aaa0","schema_version":"1.0","event_id":"sha256:4c98a1183b9179ec7748019077d8cfeac5e64341ae555565ebdf16840d43aaa0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SIXDJGYNHZ6HXAV7MNH5B5JUR4/bundle.json","state_url":"https://pith.science/pith/SIXDJGYNHZ6HXAV7MNH5B5JUR4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SIXDJGYNHZ6HXAV7MNH5B5JUR4/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":"2026-08-05T06:12:57Z","links":{"resolver":"https://pith.science/pith/SIXDJGYNHZ6HXAV7MNH5B5JUR4","bundle":"https://pith.science/pith/SIXDJGYNHZ6HXAV7MNH5B5JUR4/bundle.json","state":"https://pith.science/pith/SIXDJGYNHZ6HXAV7MNH5B5JUR4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SIXDJGYNHZ6HXAV7MNH5B5JUR4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:SIXDJGYNHZ6HXAV7MNH5B5JUR4","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":"eeb3755238896cab5777b5c8365a9539f36d16e24ac05f0c75fb064e1b3559af","cross_cats_sorted":[],"license":"","primary_cat":"physics.plasm-ph","submitted_at":"2005-08-18T12:48:09Z","title_canon_sha256":"7e3f012c8ef5822ccc9b110c1cae70408a31f9b81ecf54fec7ad567f227c9c9f"},"schema_version":"1.0","source":{"id":"physics/0508125","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0508125","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0508125v2","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0508125","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"SIXDJGYNHZ6H","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"pith_short_16","alias_value":"SIXDJGYNHZ6HXAV7","created_at":"2026-07-04T16:57:18Z"},{"alias_kind":"pith_short_8","alias_value":"SIXDJGYN","created_at":"2026-07-04T16:57:18Z"}],"graph_snapshots":[{"event_id":"sha256:4c98a1183b9179ec7748019077d8cfeac5e64341ae555565ebdf16840d43aaa0","target":"graph","created_at":"2026-07-04T16:57:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/physics/0508125/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Three-dimensional long-range ordered structures in smaller and near-spherically symmetric Coulomb crystals of ^{40}Ca^+ ions confined in a linear rf Paul trap have been observed when the number of ions exceeds ~1000 ions. This result is unexpected from ground state molecular dynamics (MD) simulations, but found to be in agreement with MD simulations of metastable ion configurations. Previously, three-dimensional long-range ordered structures have only been reported in Penning traps in systems of ~50,000 ions or more.","authors_text":"A. Mortensen, E. Nielsen, M. Drewsen, T. Matthey","cross_cats":[],"headline":"","license":"","primary_cat":"physics.plasm-ph","submitted_at":"2005-08-18T12:48:09Z","title":"Observation of Three-dimensional Long-range Order in Smaller Ion Coulomb Crystals in an rf Trap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0508125","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":"sha256:8fc837d9b777566af442d058f6afd4735a117a3bcd62b25f4f4f0ef930bc3c43","target":"record","created_at":"2026-07-04T16:57:18Z","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":"eeb3755238896cab5777b5c8365a9539f36d16e24ac05f0c75fb064e1b3559af","cross_cats_sorted":[],"license":"","primary_cat":"physics.plasm-ph","submitted_at":"2005-08-18T12:48:09Z","title_canon_sha256":"7e3f012c8ef5822ccc9b110c1cae70408a31f9b81ecf54fec7ad567f227c9c9f"},"schema_version":"1.0","source":{"id":"physics/0508125","kind":"arxiv","version":2}},"canonical_sha256":"922e349b0d3e7c7b82bf634fd0f5348f2b52c4e19555c3013ca6c42883003a60","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"922e349b0d3e7c7b82bf634fd0f5348f2b52c4e19555c3013ca6c42883003a60","first_computed_at":"2026-07-04T16:57:18.100831Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:57:18.100831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PIXj2x1PXDsT71yGdONbu23UgSs6ENmFIHE1ZLSgLVXzXiVAivTEj/K74VhbvVdTjmT2U3kcgLVN7y57ViMuDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:57:18.101229Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0508125","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8fc837d9b777566af442d058f6afd4735a117a3bcd62b25f4f4f0ef930bc3c43","sha256:4c98a1183b9179ec7748019077d8cfeac5e64341ae555565ebdf16840d43aaa0"],"state_sha256":"e2c6c0a53f935052b569ef3bcbd9e76ac611de3e5650ac9c9ba1b0c32ff6d1ae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A8wFm5U4/A4Mr36mfS9gp9suxZSRdabHWhHgJxIszU0n+1rl1noixapcl5dxpOsH0QFh3WzJulq4+urCU6XnAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T06:12:57.212617Z","bundle_sha256":"6700fbd8e9b9e6d3fd44005a0d709903004e4a91e193c0a6fc0da9bd96fd1dba"}}