{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:VHOW5K4S7TINOHVASEFJYL5GAH","short_pith_number":"pith:VHOW5K4S","canonical_record":{"source":{"id":"0906.4781","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-06-25T19:28:11Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"8b3bcd9971bf797475b7fd05cc9944c7158f164348de75e15591a0fabb408473","abstract_canon_sha256":"66f1122c66282f2e5f0e1920aaad5d3cca7ff39f6281e0cb9bb3595754ffb5ee"},"schema_version":"1.0"},"canonical_sha256":"a9dd6eab92fcd0d71ea0910a9c2fa601fcac3b392661f831413d353bfc4c083f","source":{"kind":"arxiv","id":"0906.4781","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.4781","created_at":"2026-05-18T04:21:30Z"},{"alias_kind":"arxiv_version","alias_value":"0906.4781v3","created_at":"2026-05-18T04:21:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.4781","created_at":"2026-05-18T04:21:30Z"},{"alias_kind":"pith_short_12","alias_value":"VHOW5K4S7TIN","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VHOW5K4S7TINOHVA","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VHOW5K4S","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:VHOW5K4S7TINOHVASEFJYL5GAH","target":"record","payload":{"canonical_record":{"source":{"id":"0906.4781","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-06-25T19:28:11Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"8b3bcd9971bf797475b7fd05cc9944c7158f164348de75e15591a0fabb408473","abstract_canon_sha256":"66f1122c66282f2e5f0e1920aaad5d3cca7ff39f6281e0cb9bb3595754ffb5ee"},"schema_version":"1.0"},"canonical_sha256":"a9dd6eab92fcd0d71ea0910a9c2fa601fcac3b392661f831413d353bfc4c083f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:21:30.154913Z","signature_b64":"87t2NRhHqyaisA8f5enKPdbWLZnzl3aoB2Veo7U7bAjWvdXiPfPH8lWPVvw1gwG6R63dy7P5sNiutRniOmBjCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a9dd6eab92fcd0d71ea0910a9c2fa601fcac3b392661f831413d353bfc4c083f","last_reissued_at":"2026-05-18T04:21:30.154515Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:21:30.154515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.4781","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:21:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dgXOA371Vpo6Aj4yghoGgkJ3+IIyOexE26KgPsGVEGsism9uC0ngkKOl2MmA4uAd4zI+pi7wmapAUi7RwUzRBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T10:48:30.978419Z"},"content_sha256":"517b2198e3a5d09951fadd564af40e57e75b708501224ca3bbd8b5eacad9dc5a","schema_version":"1.0","event_id":"sha256:517b2198e3a5d09951fadd564af40e57e75b708501224ca3bbd8b5eacad9dc5a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:VHOW5K4S7TINOHVASEFJYL5GAH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-stage ordering of spins in a dipolar spin ice on the kagome lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Gia-Wei Chern, O. Tchernyshyov, Paula Mellado","submitted_at":"2009-06-25T19:28:11Z","abstract_excerpt":"Spin ice, a peculiar thermal state of a frustrated ferromagnet on the pyrochlore lattice, has a finite entropy density and excitations carrying magnetic charge. By combining analytical arguments and Monte Carlo simulations, we show that spin ice on the two-dimensional kagome lattice orders in two stages. The intermediate phase has ordered magnetic charges and is separated from the paramagnetic phase by an Ising transition. The transition to the low-temperature phase is of the three-state Potts or Kosterlitz-Thouless type, depending on the presence of defects in charge order."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.4781","kind":"arxiv","version":3},"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":"2026-05-18T04:21:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rrXL/54sobPxC20/stfYYnpcm+zQBZdIvXUXt4kk225AbVjX9X0+foz0lj7HUzDndTO6KPu6naGDfA/vr0pqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T10:48:30.978782Z"},"content_sha256":"00a8b5094d98aff16bf4c0189a067cabbf1f471511d08783c5399589f3ccf966","schema_version":"1.0","event_id":"sha256:00a8b5094d98aff16bf4c0189a067cabbf1f471511d08783c5399589f3ccf966"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VHOW5K4S7TINOHVASEFJYL5GAH/bundle.json","state_url":"https://pith.science/pith/VHOW5K4S7TINOHVASEFJYL5GAH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VHOW5K4S7TINOHVASEFJYL5GAH/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":"2026-05-20T10:48:30Z","links":{"resolver":"https://pith.science/pith/VHOW5K4S7TINOHVASEFJYL5GAH","bundle":"https://pith.science/pith/VHOW5K4S7TINOHVASEFJYL5GAH/bundle.json","state":"https://pith.science/pith/VHOW5K4S7TINOHVASEFJYL5GAH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VHOW5K4S7TINOHVASEFJYL5GAH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:VHOW5K4S7TINOHVASEFJYL5GAH","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":"66f1122c66282f2e5f0e1920aaad5d3cca7ff39f6281e0cb9bb3595754ffb5ee","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-06-25T19:28:11Z","title_canon_sha256":"8b3bcd9971bf797475b7fd05cc9944c7158f164348de75e15591a0fabb408473"},"schema_version":"1.0","source":{"id":"0906.4781","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.4781","created_at":"2026-05-18T04:21:30Z"},{"alias_kind":"arxiv_version","alias_value":"0906.4781v3","created_at":"2026-05-18T04:21:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.4781","created_at":"2026-05-18T04:21:30Z"},{"alias_kind":"pith_short_12","alias_value":"VHOW5K4S7TIN","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VHOW5K4S7TINOHVA","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VHOW5K4S","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:00a8b5094d98aff16bf4c0189a067cabbf1f471511d08783c5399589f3ccf966","target":"graph","created_at":"2026-05-18T04:21:30Z","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":"Spin ice, a peculiar thermal state of a frustrated ferromagnet on the pyrochlore lattice, has a finite entropy density and excitations carrying magnetic charge. By combining analytical arguments and Monte Carlo simulations, we show that spin ice on the two-dimensional kagome lattice orders in two stages. The intermediate phase has ordered magnetic charges and is separated from the paramagnetic phase by an Ising transition. The transition to the low-temperature phase is of the three-state Potts or Kosterlitz-Thouless type, depending on the presence of defects in charge order.","authors_text":"Gia-Wei Chern, O. Tchernyshyov, Paula Mellado","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-06-25T19:28:11Z","title":"Two-stage ordering of spins in a dipolar spin ice on the kagome lattice"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.4781","kind":"arxiv","version":3},"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":"sha256:517b2198e3a5d09951fadd564af40e57e75b708501224ca3bbd8b5eacad9dc5a","target":"record","created_at":"2026-05-18T04:21:30Z","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":"66f1122c66282f2e5f0e1920aaad5d3cca7ff39f6281e0cb9bb3595754ffb5ee","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-06-25T19:28:11Z","title_canon_sha256":"8b3bcd9971bf797475b7fd05cc9944c7158f164348de75e15591a0fabb408473"},"schema_version":"1.0","source":{"id":"0906.4781","kind":"arxiv","version":3}},"canonical_sha256":"a9dd6eab92fcd0d71ea0910a9c2fa601fcac3b392661f831413d353bfc4c083f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9dd6eab92fcd0d71ea0910a9c2fa601fcac3b392661f831413d353bfc4c083f","first_computed_at":"2026-05-18T04:21:30.154515Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:21:30.154515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"87t2NRhHqyaisA8f5enKPdbWLZnzl3aoB2Veo7U7bAjWvdXiPfPH8lWPVvw1gwG6R63dy7P5sNiutRniOmBjCg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:21:30.154913Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.4781","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:517b2198e3a5d09951fadd564af40e57e75b708501224ca3bbd8b5eacad9dc5a","sha256:00a8b5094d98aff16bf4c0189a067cabbf1f471511d08783c5399589f3ccf966"],"state_sha256":"9ec65e173c6cabbd290000bcd0f1a22c199a9315778bdc34d2ab29b3adc114c1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s28ouv5p8PmT/P7KmLZvDUeCrsiJx62WrWlsn6Dtvt7+RfQvQMKqPgXPbNV8v8Op7Y5CEqs70vTpIzPBqZUHBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T10:48:30.980790Z","bundle_sha256":"681385b8bf8cf51d2739f15b086b6a3ac139bb7be048686631628a9e4ae492d3"}}