{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:JSL526K224CFOYMZN2KZSK3D4S","short_pith_number":"pith:JSL526K2","canonical_record":{"source":{"id":"1303.0619","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-03-04T07:08:40Z","cross_cats_sorted":[],"title_canon_sha256":"7b57b850bb6337311ab1ebe2adb0a8c5efeb3ad9ac73a372519e42703add2ebe","abstract_canon_sha256":"8ed5fd2f9406c2e4356d8542f616a28abfa9af6f8a073d58cb1234775daceb28"},"schema_version":"1.0"},"canonical_sha256":"4c97dd795ad7045761996e95992b63e4952f70f291e258cc757a1694a786651d","source":{"kind":"arxiv","id":"1303.0619","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0619","created_at":"2026-05-18T03:21:11Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0619v2","created_at":"2026-05-18T03:21:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0619","created_at":"2026-05-18T03:21:11Z"},{"alias_kind":"pith_short_12","alias_value":"JSL526K224CF","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JSL526K224CFOYMZ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JSL526K2","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:JSL526K224CFOYMZN2KZSK3D4S","target":"record","payload":{"canonical_record":{"source":{"id":"1303.0619","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-03-04T07:08:40Z","cross_cats_sorted":[],"title_canon_sha256":"7b57b850bb6337311ab1ebe2adb0a8c5efeb3ad9ac73a372519e42703add2ebe","abstract_canon_sha256":"8ed5fd2f9406c2e4356d8542f616a28abfa9af6f8a073d58cb1234775daceb28"},"schema_version":"1.0"},"canonical_sha256":"4c97dd795ad7045761996e95992b63e4952f70f291e258cc757a1694a786651d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:21:11.801983Z","signature_b64":"kdqN6Km5/eaGcwPtv4J7c9JwxUWmFH95tLKNrtKQE5CrskGPhq6sZaqtnHG0+Gtm7ZEdvByQ3879PYnFhU5NCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4c97dd795ad7045761996e95992b63e4952f70f291e258cc757a1694a786651d","last_reissued_at":"2026-05-18T03:21:11.801432Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:21:11.801432Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.0619","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":"2026-05-18T03:21:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GCxXpEChRzaX1UH7yredMAX9Lw+vvBQWWxeK06XhzAN6KcLk5wzn6HposZG2GhEnf0GlSzCX0181y1m8A7vVAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:50:14.923025Z"},"content_sha256":"f310ed80fcb16a258278951513e13161bd3d3693cd21081b7926f0ea479eaf17","schema_version":"1.0","event_id":"sha256:f310ed80fcb16a258278951513e13161bd3d3693cd21081b7926f0ea479eaf17"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:JSL526K224CFOYMZN2KZSK3D4S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Switching of anisotropy and phase diagram of a Heisenberg square lattice S=1/2 antiferromagnet Cu(pz)2(ClO4)2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. I. Smirnov, C. P. Landee, K. Yu. Povarov","submitted_at":"2013-03-04T07:08:40Z","abstract_excerpt":"Experiments in the antiferromagnetic phase of a quasi 2D $S=1/2$ quasi-square lattice antiferromagnet Cu(pz)2(ClO4)2 reveal a biaxial type of the anisotropy, instead of the easy-plane one, considered before. The weak in-plane anisotropy, found by means of electron spin resonance spectroscopy and magnetization measurements, is about an order of magnitude weaker, than the off-plane anisotropy. The weak in-plane anisotropy results in a spin-flop phase transition for the magnetic field aligned along easy axis, and, thereby, in a bicritical point on the phase diagram. A remarkable feature of the we"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0619","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":""},"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":"2026-05-18T03:21:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OcGWHXPDCfAxGKsx4DbTEQlU0gkuD0QiKFNLD71iJMDIp9yIpuSflB+V1tNFYrnfbfxtBpoVYzLmtCwORYb8CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:50:14.923773Z"},"content_sha256":"cc16bc8f2e78f0f14dbdd4808d59aa0cfeb660875936ecc96783f64eb41befb0","schema_version":"1.0","event_id":"sha256:cc16bc8f2e78f0f14dbdd4808d59aa0cfeb660875936ecc96783f64eb41befb0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JSL526K224CFOYMZN2KZSK3D4S/bundle.json","state_url":"https://pith.science/pith/JSL526K224CFOYMZN2KZSK3D4S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JSL526K224CFOYMZN2KZSK3D4S/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":"2026-05-28T21:50:14Z","links":{"resolver":"https://pith.science/pith/JSL526K224CFOYMZN2KZSK3D4S","bundle":"https://pith.science/pith/JSL526K224CFOYMZN2KZSK3D4S/bundle.json","state":"https://pith.science/pith/JSL526K224CFOYMZN2KZSK3D4S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JSL526K224CFOYMZN2KZSK3D4S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JSL526K224CFOYMZN2KZSK3D4S","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":"8ed5fd2f9406c2e4356d8542f616a28abfa9af6f8a073d58cb1234775daceb28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-03-04T07:08:40Z","title_canon_sha256":"7b57b850bb6337311ab1ebe2adb0a8c5efeb3ad9ac73a372519e42703add2ebe"},"schema_version":"1.0","source":{"id":"1303.0619","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0619","created_at":"2026-05-18T03:21:11Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0619v2","created_at":"2026-05-18T03:21:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0619","created_at":"2026-05-18T03:21:11Z"},{"alias_kind":"pith_short_12","alias_value":"JSL526K224CF","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JSL526K224CFOYMZ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JSL526K2","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:cc16bc8f2e78f0f14dbdd4808d59aa0cfeb660875936ecc96783f64eb41befb0","target":"graph","created_at":"2026-05-18T03:21:11Z","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":"Experiments in the antiferromagnetic phase of a quasi 2D $S=1/2$ quasi-square lattice antiferromagnet Cu(pz)2(ClO4)2 reveal a biaxial type of the anisotropy, instead of the easy-plane one, considered before. The weak in-plane anisotropy, found by means of electron spin resonance spectroscopy and magnetization measurements, is about an order of magnitude weaker, than the off-plane anisotropy. The weak in-plane anisotropy results in a spin-flop phase transition for the magnetic field aligned along easy axis, and, thereby, in a bicritical point on the phase diagram. A remarkable feature of the we","authors_text":"A. I. Smirnov, C. P. Landee, K. Yu. Povarov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-03-04T07:08:40Z","title":"Switching of anisotropy and phase diagram of a Heisenberg square lattice S=1/2 antiferromagnet Cu(pz)2(ClO4)2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0619","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:f310ed80fcb16a258278951513e13161bd3d3693cd21081b7926f0ea479eaf17","target":"record","created_at":"2026-05-18T03:21:11Z","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":"8ed5fd2f9406c2e4356d8542f616a28abfa9af6f8a073d58cb1234775daceb28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-03-04T07:08:40Z","title_canon_sha256":"7b57b850bb6337311ab1ebe2adb0a8c5efeb3ad9ac73a372519e42703add2ebe"},"schema_version":"1.0","source":{"id":"1303.0619","kind":"arxiv","version":2}},"canonical_sha256":"4c97dd795ad7045761996e95992b63e4952f70f291e258cc757a1694a786651d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4c97dd795ad7045761996e95992b63e4952f70f291e258cc757a1694a786651d","first_computed_at":"2026-05-18T03:21:11.801432Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:21:11.801432Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kdqN6Km5/eaGcwPtv4J7c9JwxUWmFH95tLKNrtKQE5CrskGPhq6sZaqtnHG0+Gtm7ZEdvByQ3879PYnFhU5NCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:21:11.801983Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.0619","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f310ed80fcb16a258278951513e13161bd3d3693cd21081b7926f0ea479eaf17","sha256:cc16bc8f2e78f0f14dbdd4808d59aa0cfeb660875936ecc96783f64eb41befb0"],"state_sha256":"bb014a97189e00ff055a1868fbeabbdd4f2466e13c082a224c3adb616b123f5a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n+PInyEHAepGPPAVTqmNhAGJ3iyqSymKE2urKJf2nWwfd+A66DbtXnmXyU0jVSXbQMxKpTq6GLCgZdJ1skw6CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:50:14.927652Z","bundle_sha256":"c88b81100c1f7b5496091247054cfdf64ec149174069a1dea5b9cd23dda6cff6"}}