{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:MZ5DYFJU43GUAXT2HOMOEHFHEI","short_pith_number":"pith:MZ5DYFJU","canonical_record":{"source":{"id":"1204.5009","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-04-23T09:26:07Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"80aa4a6fa04c11fb48ef6d3994a04bfeab3c1ab868717eed2bafadfd1c866990","abstract_canon_sha256":"b6cf6fadbbeafdae6984430304ae3b1b212d38f2f089285dacc2611dc57b97b9"},"schema_version":"1.0"},"canonical_sha256":"667a3c1534e6cd405e7a3b98e21ca7220aa463756bf0f4161fc6993f2ea4f64a","source":{"kind":"arxiv","id":"1204.5009","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.5009","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"arxiv_version","alias_value":"1204.5009v1","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5009","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"pith_short_12","alias_value":"MZ5DYFJU43GU","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MZ5DYFJU43GUAXT2","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MZ5DYFJU","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:MZ5DYFJU43GUAXT2HOMOEHFHEI","target":"record","payload":{"canonical_record":{"source":{"id":"1204.5009","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-04-23T09:26:07Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"80aa4a6fa04c11fb48ef6d3994a04bfeab3c1ab868717eed2bafadfd1c866990","abstract_canon_sha256":"b6cf6fadbbeafdae6984430304ae3b1b212d38f2f089285dacc2611dc57b97b9"},"schema_version":"1.0"},"canonical_sha256":"667a3c1534e6cd405e7a3b98e21ca7220aa463756bf0f4161fc6993f2ea4f64a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:47.479550Z","signature_b64":"vMdHwRmD7McXZbhZaue6Gim2Gc1gCIPq3qQ4Xh1+T6NSeOKbEY/QH+0FvA6yLHh2mtPyJEvtyfS5JEHjdDPkAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"667a3c1534e6cd405e7a3b98e21ca7220aa463756bf0f4161fc6993f2ea4f64a","last_reissued_at":"2026-05-18T01:57:47.479024Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:47.479024Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.5009","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":"2026-05-18T01:57:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0k2GG1d6pti1QcjnGu3rECtEeEwku0+il5KQHJw/ajn8ckoKVw+JtGdsOLzE2Vx2kUrGyJikl/bwauKblO75DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:56:03.172693Z"},"content_sha256":"9d2c4e7be6081c4ce7bb852f479696835172f02aefcd2085c909171b79e422e8","schema_version":"1.0","event_id":"sha256:9d2c4e7be6081c4ce7bb852f479696835172f02aefcd2085c909171b79e422e8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:MZ5DYFJU43GUAXT2HOMOEHFHEI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of magnetic excitations of skyrmion crystal in a helimagnetic insulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"S. Ishiwata, S. Seki, Y. Okamura, Y. Onose, Y. Tokura","submitted_at":"2012-04-23T09:26:07Z","abstract_excerpt":"The skyrmion is a topologically stable spin texture, in which the spin direction wraps a sphere. The topological nature gives rise to emergent electromagnetic phenomena such as topological Hall effect. Recently, the crystallization of nanoscale skyrmions was observed in chiral helimagnets with use of the neutron diffraction and Lorentz transmission electron microscopy. The skyrmions are quite mobile under electric current density as low as $\\sim$ 10$^6$ A/m$^2$, and, in some cases, stable up to near room temperature. These features suggest that the skyrmions may work as a magnetic stable-varia"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5009","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":"2026-05-18T01:57:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uHoW4qb3OJOjCplBF7QE1K6tC8yVv5OqGGOET5G2FX/pxLFbV7XN4Snc3JLfKIa9KLg4kAP8V9uSGOM++lXTCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:56:03.173056Z"},"content_sha256":"51afdb6c84d7d8fcf329dde257c088c4564a147abb0efcbaf19cb1aaebe01bdc","schema_version":"1.0","event_id":"sha256:51afdb6c84d7d8fcf329dde257c088c4564a147abb0efcbaf19cb1aaebe01bdc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MZ5DYFJU43GUAXT2HOMOEHFHEI/bundle.json","state_url":"https://pith.science/pith/MZ5DYFJU43GUAXT2HOMOEHFHEI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MZ5DYFJU43GUAXT2HOMOEHFHEI/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":"2026-06-01T02:56:03Z","links":{"resolver":"https://pith.science/pith/MZ5DYFJU43GUAXT2HOMOEHFHEI","bundle":"https://pith.science/pith/MZ5DYFJU43GUAXT2HOMOEHFHEI/bundle.json","state":"https://pith.science/pith/MZ5DYFJU43GUAXT2HOMOEHFHEI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MZ5DYFJU43GUAXT2HOMOEHFHEI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MZ5DYFJU43GUAXT2HOMOEHFHEI","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":"b6cf6fadbbeafdae6984430304ae3b1b212d38f2f089285dacc2611dc57b97b9","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-04-23T09:26:07Z","title_canon_sha256":"80aa4a6fa04c11fb48ef6d3994a04bfeab3c1ab868717eed2bafadfd1c866990"},"schema_version":"1.0","source":{"id":"1204.5009","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.5009","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"arxiv_version","alias_value":"1204.5009v1","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5009","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"pith_short_12","alias_value":"MZ5DYFJU43GU","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MZ5DYFJU43GUAXT2","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MZ5DYFJU","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:51afdb6c84d7d8fcf329dde257c088c4564a147abb0efcbaf19cb1aaebe01bdc","target":"graph","created_at":"2026-05-18T01:57:47Z","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":"The skyrmion is a topologically stable spin texture, in which the spin direction wraps a sphere. The topological nature gives rise to emergent electromagnetic phenomena such as topological Hall effect. Recently, the crystallization of nanoscale skyrmions was observed in chiral helimagnets with use of the neutron diffraction and Lorentz transmission electron microscopy. The skyrmions are quite mobile under electric current density as low as $\\sim$ 10$^6$ A/m$^2$, and, in some cases, stable up to near room temperature. These features suggest that the skyrmions may work as a magnetic stable-varia","authors_text":"S. Ishiwata, S. Seki, Y. Okamura, Y. Onose, Y. Tokura","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-04-23T09:26:07Z","title":"Observation of magnetic excitations of skyrmion crystal in a helimagnetic insulator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5009","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":"sha256:9d2c4e7be6081c4ce7bb852f479696835172f02aefcd2085c909171b79e422e8","target":"record","created_at":"2026-05-18T01:57:47Z","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":"b6cf6fadbbeafdae6984430304ae3b1b212d38f2f089285dacc2611dc57b97b9","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-04-23T09:26:07Z","title_canon_sha256":"80aa4a6fa04c11fb48ef6d3994a04bfeab3c1ab868717eed2bafadfd1c866990"},"schema_version":"1.0","source":{"id":"1204.5009","kind":"arxiv","version":1}},"canonical_sha256":"667a3c1534e6cd405e7a3b98e21ca7220aa463756bf0f4161fc6993f2ea4f64a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"667a3c1534e6cd405e7a3b98e21ca7220aa463756bf0f4161fc6993f2ea4f64a","first_computed_at":"2026-05-18T01:57:47.479024Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:47.479024Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vMdHwRmD7McXZbhZaue6Gim2Gc1gCIPq3qQ4Xh1+T6NSeOKbEY/QH+0FvA6yLHh2mtPyJEvtyfS5JEHjdDPkAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:47.479550Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.5009","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d2c4e7be6081c4ce7bb852f479696835172f02aefcd2085c909171b79e422e8","sha256:51afdb6c84d7d8fcf329dde257c088c4564a147abb0efcbaf19cb1aaebe01bdc"],"state_sha256":"c5b3e3ac2356327df9e98f4101aa4c4670407133df3e40f42f2699e576ca87b6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pYjJrJifD3uNtgPTdJmop32Q1eDkdT/XOAhX5joD38U6on/sycHzhaN1YAbqQcWbdTSwV/OeIy/KfphLmXD5Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T02:56:03.175644Z","bundle_sha256":"099ad321244387d5e969fac942f3e77e9ddea1218236e3d3614e1fab4018a2d2"}}