{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:FJQPPH5AENAY67EAP3SJM3F3UV","short_pith_number":"pith:FJQPPH5A","canonical_record":{"source":{"id":"1504.03618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-14T16:39:34Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"590ce526c7ae3dbc8c4589b5fbf08f724778005aeaee51287838d2cac0544d86","abstract_canon_sha256":"6bae26b30b37fdec0ab3b9317a3ee2cbfaa881c334660974b9ed178e1cbce83e"},"schema_version":"1.0"},"canonical_sha256":"2a60f79fa023418f7c807ee4966cbba5456db6f25536fc56aa9de2a11706d8c4","source":{"kind":"arxiv","id":"1504.03618","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.03618","created_at":"2026-05-18T02:18:40Z"},{"alias_kind":"arxiv_version","alias_value":"1504.03618v1","created_at":"2026-05-18T02:18:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.03618","created_at":"2026-05-18T02:18:40Z"},{"alias_kind":"pith_short_12","alias_value":"FJQPPH5AENAY","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FJQPPH5AENAY67EA","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FJQPPH5A","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:FJQPPH5AENAY67EAP3SJM3F3UV","target":"record","payload":{"canonical_record":{"source":{"id":"1504.03618","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-14T16:39:34Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"590ce526c7ae3dbc8c4589b5fbf08f724778005aeaee51287838d2cac0544d86","abstract_canon_sha256":"6bae26b30b37fdec0ab3b9317a3ee2cbfaa881c334660974b9ed178e1cbce83e"},"schema_version":"1.0"},"canonical_sha256":"2a60f79fa023418f7c807ee4966cbba5456db6f25536fc56aa9de2a11706d8c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:18:40.195805Z","signature_b64":"H1aG+/6woB6Q3A6wJLomsoj/u0rdV2L3w50B2f1Y/0zShD6UHWm+lxkduSe6eWGBGpJzczAkxWi93+mkujuJDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a60f79fa023418f7c807ee4966cbba5456db6f25536fc56aa9de2a11706d8c4","last_reissued_at":"2026-05-18T02:18:40.195202Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:18:40.195202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.03618","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":"2026-05-18T02:18:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o7rUJbggmkuKZkOSl+NGsBhUcVe8sTK772bITWqXSwlmaSvNzUHdryj9mIXbL9iZPl3VyTJ1FJZ1BdhSnntxBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T22:23:00.038450Z"},"content_sha256":"2c51bb66f05a660f067762cbc1ac7dc3aa4eea1cd6b47a7ac207075ffe03b1a4","schema_version":"1.0","event_id":"sha256:2c51bb66f05a660f067762cbc1ac7dc3aa4eea1cd6b47a7ac207075ffe03b1a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:FJQPPH5AENAY67EAP3SJM3F3UV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct Evidence for Dominant Bond-directional Interactions in a Honeycomb Lattice Iridate Na2IrO3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Al-Zein, B. J. Kim, C. D. Malliakas, Constantinos C. Stoumpos, G. Jackeli, G. Khaliullin, H. Zheng, J. Chaloupka, J. F. Mitchell, Jong-Woo Kim, Jungho Kim, Kavita Mehlawat, M. Krisch, M. Moretti Sala, Sae Hwan Chun, T. Gog, Y. Choi, Yogesh Singh","submitted_at":"2015-04-14T16:39:34Z","abstract_excerpt":"Heisenberg interactions are ubiquitous in magnetic materials and have been prevailing in modeling and designing quantum magnets. Bond-directional interactions offer a novel alternative to Heisenberg exchange and provide the building blocks of the Kitaev model, which has a quantum spin liquid (QSL) as its exact ground state. Honeycomb iridates, A2IrO3 (A=Na,Li), offer potential realizations of the Kitaev model, and their reported magnetic behaviors may be interpreted within the Kitaev framework. However, the extent of their relevance to the Kitaev model remains unclear, as evidence for bond-dir"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.03618","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":"2026-05-18T02:18:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YM9ttppqaR3WfOmhan+zt8lPD63ne+f+2xh3nUm+FeRlySgYMGW7DwtyYIvQ1GxpDGhB5pqTSYH/tKY7KnbeDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T22:23:00.039146Z"},"content_sha256":"f39d9f3ea5d72072c159e1ae309408aa99266efc3bb0981de5f8327b338d5ea2","schema_version":"1.0","event_id":"sha256:f39d9f3ea5d72072c159e1ae309408aa99266efc3bb0981de5f8327b338d5ea2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FJQPPH5AENAY67EAP3SJM3F3UV/bundle.json","state_url":"https://pith.science/pith/FJQPPH5AENAY67EAP3SJM3F3UV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FJQPPH5AENAY67EAP3SJM3F3UV/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":"2026-05-18T22:23:00Z","links":{"resolver":"https://pith.science/pith/FJQPPH5AENAY67EAP3SJM3F3UV","bundle":"https://pith.science/pith/FJQPPH5AENAY67EAP3SJM3F3UV/bundle.json","state":"https://pith.science/pith/FJQPPH5AENAY67EAP3SJM3F3UV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FJQPPH5AENAY67EAP3SJM3F3UV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:FJQPPH5AENAY67EAP3SJM3F3UV","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":"6bae26b30b37fdec0ab3b9317a3ee2cbfaa881c334660974b9ed178e1cbce83e","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-14T16:39:34Z","title_canon_sha256":"590ce526c7ae3dbc8c4589b5fbf08f724778005aeaee51287838d2cac0544d86"},"schema_version":"1.0","source":{"id":"1504.03618","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.03618","created_at":"2026-05-18T02:18:40Z"},{"alias_kind":"arxiv_version","alias_value":"1504.03618v1","created_at":"2026-05-18T02:18:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.03618","created_at":"2026-05-18T02:18:40Z"},{"alias_kind":"pith_short_12","alias_value":"FJQPPH5AENAY","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FJQPPH5AENAY67EA","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FJQPPH5A","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:f39d9f3ea5d72072c159e1ae309408aa99266efc3bb0981de5f8327b338d5ea2","target":"graph","created_at":"2026-05-18T02:18:40Z","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":"Heisenberg interactions are ubiquitous in magnetic materials and have been prevailing in modeling and designing quantum magnets. Bond-directional interactions offer a novel alternative to Heisenberg exchange and provide the building blocks of the Kitaev model, which has a quantum spin liquid (QSL) as its exact ground state. Honeycomb iridates, A2IrO3 (A=Na,Li), offer potential realizations of the Kitaev model, and their reported magnetic behaviors may be interpreted within the Kitaev framework. However, the extent of their relevance to the Kitaev model remains unclear, as evidence for bond-dir","authors_text":"A. Al-Zein, B. J. Kim, C. D. Malliakas, Constantinos C. Stoumpos, G. Jackeli, G. Khaliullin, H. Zheng, J. Chaloupka, J. F. Mitchell, Jong-Woo Kim, Jungho Kim, Kavita Mehlawat, M. Krisch, M. Moretti Sala, Sae Hwan Chun, T. Gog, Y. Choi, Yogesh Singh","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-14T16:39:34Z","title":"Direct Evidence for Dominant Bond-directional Interactions in a Honeycomb Lattice Iridate Na2IrO3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.03618","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":"sha256:2c51bb66f05a660f067762cbc1ac7dc3aa4eea1cd6b47a7ac207075ffe03b1a4","target":"record","created_at":"2026-05-18T02:18:40Z","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":"6bae26b30b37fdec0ab3b9317a3ee2cbfaa881c334660974b9ed178e1cbce83e","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-14T16:39:34Z","title_canon_sha256":"590ce526c7ae3dbc8c4589b5fbf08f724778005aeaee51287838d2cac0544d86"},"schema_version":"1.0","source":{"id":"1504.03618","kind":"arxiv","version":1}},"canonical_sha256":"2a60f79fa023418f7c807ee4966cbba5456db6f25536fc56aa9de2a11706d8c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a60f79fa023418f7c807ee4966cbba5456db6f25536fc56aa9de2a11706d8c4","first_computed_at":"2026-05-18T02:18:40.195202Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:18:40.195202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H1aG+/6woB6Q3A6wJLomsoj/u0rdV2L3w50B2f1Y/0zShD6UHWm+lxkduSe6eWGBGpJzczAkxWi93+mkujuJDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:18:40.195805Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.03618","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c51bb66f05a660f067762cbc1ac7dc3aa4eea1cd6b47a7ac207075ffe03b1a4","sha256:f39d9f3ea5d72072c159e1ae309408aa99266efc3bb0981de5f8327b338d5ea2"],"state_sha256":"7217c7d9a1e1b6faffcc9109b35b8e0d655178f02858f5cecf9525f1ffd8a1b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sSl3naWU/3L4faST0OJ59DM1Th/zLS5QiedEhBTrb9eE5Ws4qNLOmrnKbFY8KKaQD4vd3lwUJlM6grNTk45xAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T22:23:00.041273Z","bundle_sha256":"048bfed7a4e2c5621f4d6e58f262616cebbb395710e56642eb50ae822035e23b"}}