{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:B3ESUD6EORNGYHDKHA3PBBCSTI","short_pith_number":"pith:B3ESUD6E","canonical_record":{"source":{"id":"1803.10196","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-27T17:35:55Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"bb9caeffe647b6fb5e9996f77b5066055eb8d167112e12c426341237d7b35c72","abstract_canon_sha256":"7bb06a156abf0c2b12df6b820929e285a7d02a6db6009e180bea2831df87403d"},"schema_version":"1.0"},"canonical_sha256":"0ec92a0fc4745a6c1c6a3836f084529a2af162fa9ba6747b331577ffee6959f8","source":{"kind":"arxiv","id":"1803.10196","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.10196","created_at":"2026-05-18T00:15:15Z"},{"alias_kind":"arxiv_version","alias_value":"1803.10196v1","created_at":"2026-05-18T00:15:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.10196","created_at":"2026-05-18T00:15:15Z"},{"alias_kind":"pith_short_12","alias_value":"B3ESUD6EORNG","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"B3ESUD6EORNGYHDK","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"B3ESUD6E","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:B3ESUD6EORNGYHDKHA3PBBCSTI","target":"record","payload":{"canonical_record":{"source":{"id":"1803.10196","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-27T17:35:55Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"bb9caeffe647b6fb5e9996f77b5066055eb8d167112e12c426341237d7b35c72","abstract_canon_sha256":"7bb06a156abf0c2b12df6b820929e285a7d02a6db6009e180bea2831df87403d"},"schema_version":"1.0"},"canonical_sha256":"0ec92a0fc4745a6c1c6a3836f084529a2af162fa9ba6747b331577ffee6959f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:15.144793Z","signature_b64":"HvuQOnwEWB6/QXZxif+q50YUbLBKJH57C0ky92vmwJBlJ9BgS8mtf/d/K93Vj0bqjcsBuHSwmXNrbgtFa/oxAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ec92a0fc4745a6c1c6a3836f084529a2af162fa9ba6747b331577ffee6959f8","last_reissued_at":"2026-05-18T00:15:15.143969Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:15.143969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.10196","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":"2026-05-18T00:15:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m53CIFbCjj+WoWx5Q8P0em/0vUqdqhkJ9qprmLqPWNNjSaGMEx4RmwQ2hkK1O1aP4uPKNiz8FrukriCaBbdKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:51:50.790509Z"},"content_sha256":"643440cad50e185a851ee3c3be82ebbd9b3b07f9e2196a50971cc9e265a2f159","schema_version":"1.0","event_id":"sha256:643440cad50e185a851ee3c3be82ebbd9b3b07f9e2196a50971cc9e265a2f159"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:B3ESUD6EORNGYHDKHA3PBBCSTI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ground state of dipolar hard spheres confined in channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Erdal C. O\\u{g}uz, Florian Dei{\\ss}enbeck, Hartmut L\\\"owen","submitted_at":"2018-03-27T17:35:55Z","abstract_excerpt":"We investigate the ground state of a classical two-dimensional system of hard-sphere dipoles confined between two hard walls. Using lattice sum minimization techniques we reveal that at fixed wall separations, a first-order transition from a vacuum to a straight one-dimensional chain of dipoles occurs upon increasing the density. Further increase in the density yields the stability of an undulated chain as well as nontrivial buckling structures. We explore the close-packed configurations of dipoles in detail, and we find that, in general, the densest packings of dipoles possess complex magneti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.10196","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":"2026-05-18T00:15:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hob0R67+Z3az7SqhNoeqz4EQxUhSK2ErYU/DZ30IWq+LZuA7Btb86Z4oPLGMKDGJfL+Os6B+6OtCsJNGCk0dDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:51:50.790855Z"},"content_sha256":"9961c8d10f96180a49f39145229189c43b6410226051eaad09787cb5b1f5f1a0","schema_version":"1.0","event_id":"sha256:9961c8d10f96180a49f39145229189c43b6410226051eaad09787cb5b1f5f1a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B3ESUD6EORNGYHDKHA3PBBCSTI/bundle.json","state_url":"https://pith.science/pith/B3ESUD6EORNGYHDKHA3PBBCSTI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B3ESUD6EORNGYHDKHA3PBBCSTI/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":"2026-06-02T16:51:50Z","links":{"resolver":"https://pith.science/pith/B3ESUD6EORNGYHDKHA3PBBCSTI","bundle":"https://pith.science/pith/B3ESUD6EORNGYHDKHA3PBBCSTI/bundle.json","state":"https://pith.science/pith/B3ESUD6EORNGYHDKHA3PBBCSTI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B3ESUD6EORNGYHDKHA3PBBCSTI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:B3ESUD6EORNGYHDKHA3PBBCSTI","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":"7bb06a156abf0c2b12df6b820929e285a7d02a6db6009e180bea2831df87403d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-27T17:35:55Z","title_canon_sha256":"bb9caeffe647b6fb5e9996f77b5066055eb8d167112e12c426341237d7b35c72"},"schema_version":"1.0","source":{"id":"1803.10196","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.10196","created_at":"2026-05-18T00:15:15Z"},{"alias_kind":"arxiv_version","alias_value":"1803.10196v1","created_at":"2026-05-18T00:15:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.10196","created_at":"2026-05-18T00:15:15Z"},{"alias_kind":"pith_short_12","alias_value":"B3ESUD6EORNG","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"B3ESUD6EORNGYHDK","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"B3ESUD6E","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:9961c8d10f96180a49f39145229189c43b6410226051eaad09787cb5b1f5f1a0","target":"graph","created_at":"2026-05-18T00:15:15Z","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 investigate the ground state of a classical two-dimensional system of hard-sphere dipoles confined between two hard walls. Using lattice sum minimization techniques we reveal that at fixed wall separations, a first-order transition from a vacuum to a straight one-dimensional chain of dipoles occurs upon increasing the density. Further increase in the density yields the stability of an undulated chain as well as nontrivial buckling structures. We explore the close-packed configurations of dipoles in detail, and we find that, in general, the densest packings of dipoles possess complex magneti","authors_text":"Erdal C. O\\u{g}uz, Florian Dei{\\ss}enbeck, Hartmut L\\\"owen","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-27T17:35:55Z","title":"Ground state of dipolar hard spheres confined in channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.10196","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":"sha256:643440cad50e185a851ee3c3be82ebbd9b3b07f9e2196a50971cc9e265a2f159","target":"record","created_at":"2026-05-18T00:15:15Z","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":"7bb06a156abf0c2b12df6b820929e285a7d02a6db6009e180bea2831df87403d","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-27T17:35:55Z","title_canon_sha256":"bb9caeffe647b6fb5e9996f77b5066055eb8d167112e12c426341237d7b35c72"},"schema_version":"1.0","source":{"id":"1803.10196","kind":"arxiv","version":1}},"canonical_sha256":"0ec92a0fc4745a6c1c6a3836f084529a2af162fa9ba6747b331577ffee6959f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ec92a0fc4745a6c1c6a3836f084529a2af162fa9ba6747b331577ffee6959f8","first_computed_at":"2026-05-18T00:15:15.143969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:15.143969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HvuQOnwEWB6/QXZxif+q50YUbLBKJH57C0ky92vmwJBlJ9BgS8mtf/d/K93Vj0bqjcsBuHSwmXNrbgtFa/oxAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:15.144793Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.10196","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:643440cad50e185a851ee3c3be82ebbd9b3b07f9e2196a50971cc9e265a2f159","sha256:9961c8d10f96180a49f39145229189c43b6410226051eaad09787cb5b1f5f1a0"],"state_sha256":"c8533f1168faa3b00a3e45b216b4822e9d1bd1a382f797827b2aa9e0438f5a1c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zFZc7CkKDAyhM23BD1ZAUpss2qNe5/GvaMGoYInH9i1z6WaOxD4GlpHwd8ncNz45pOuVyqaBoVt+7xIxwOEZAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T16:51:50.792798Z","bundle_sha256":"281d14e2e484e54d8137f0c289f427abb40a519185d838f3dc8af4d90cd7d66a"}}