{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:263ZPSXUZOJHTWRC35ZH33S7OT","short_pith_number":"pith:263ZPSXU","canonical_record":{"source":{"id":"0808.0325","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-08-03T15:16:07Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"aa369275a9123cb63ac82df5bb4397c5b0fce644012e7a54f8a4b3e35e69b74a","abstract_canon_sha256":"bfd979ed9ea5686b72a2713c949da8e7ce1b1b0b9380bf3b9aae1dc78ea7ecd7"},"schema_version":"1.0"},"canonical_sha256":"d7b797caf4cb9279da22df727dee5f74d9999b9b476e7daead4c09b87356e4a9","source":{"kind":"arxiv","id":"0808.0325","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.0325","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"arxiv_version","alias_value":"0808.0325v2","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.0325","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"pith_short_12","alias_value":"263ZPSXUZOJH","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"pith_short_16","alias_value":"263ZPSXUZOJHTWRC","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"pith_short_8","alias_value":"263ZPSXU","created_at":"2026-07-04T17:12:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:263ZPSXUZOJHTWRC35ZH33S7OT","target":"record","payload":{"canonical_record":{"source":{"id":"0808.0325","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-08-03T15:16:07Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"aa369275a9123cb63ac82df5bb4397c5b0fce644012e7a54f8a4b3e35e69b74a","abstract_canon_sha256":"bfd979ed9ea5686b72a2713c949da8e7ce1b1b0b9380bf3b9aae1dc78ea7ecd7"},"schema_version":"1.0"},"canonical_sha256":"d7b797caf4cb9279da22df727dee5f74d9999b9b476e7daead4c09b87356e4a9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:12:12.996238Z","signature_b64":"jWQD64L7SJw9n0xVb+5aMkE84gHMnNCQn+lX+8i1KAxhgQwB1WtrP+h7R8GEvf14QEVV4zovsjG9ACLZqDblAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7b797caf4cb9279da22df727dee5f74d9999b9b476e7daead4c09b87356e4a9","last_reissued_at":"2026-07-04T17:12:12.995896Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:12:12.995896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0808.0325","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":"2026-07-04T17:12:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RNAWCqsMx+8QbUDxAueC1C9xhL/Km4vIFGUcmNdFVa9lwaUlvX5lbI98F7TGS1rPhmauu3e3kMvCBrujqmLyDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T09:52:18.174138Z"},"content_sha256":"43a30acfc47cec18d934b66f457f2436ebc87cf91a968bc60736cb2d211118d2","schema_version":"1.0","event_id":"sha256:43a30acfc47cec18d934b66f457f2436ebc87cf91a968bc60736cb2d211118d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:263ZPSXUZOJHTWRC35ZH33S7OT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Metamagnetic transition in EuFe$_2$As$_2$ single crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Cao Wang, Guanghan Cao, Qian Tao, Shuai Jiang, Xiangfan Xu, Yongkang Luo, Zengwei Zhu, Zhi Ren, Zhu'an Xu","submitted_at":"2008-08-03T15:16:07Z","abstract_excerpt":"We report the measurements of anisotropic magnetization and magnetoresistance on single crystals of EuFe$_2$As$_2$, a parent compound of ferro-arsenide high-temperature superconductor. Apart from the antiferromagnetic (AFM) spin-density-wave transition at 186 K associated with Fe moments, the compound undergoes another magnetic phase transition at 19 K due to AFM ordering of Eu$^{2+}$ spins ($J=S=7/2$). The latter AFM state exhibits metamagnetic transition under magnetic fields. Upon applying magnetic field with $H\\parallel c$ at 2 K, the magnetization increases linearly to 7.0 $\\mu_{B}$/f.u. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.0325","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0808.0325/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T17:12:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CbLRb1gTwB4+YPdWbgFTbpzogk9ZIqxSL1f+ZwvcpjKq7QKdBktEIM1mngFIsSpCsFJUgpcdli/ZvE3fpZjcDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T09:52:18.174667Z"},"content_sha256":"1a4d5aa7b144d34721442c09cc7c20d5346c89c6feb764c75c338fd81bd2f0f3","schema_version":"1.0","event_id":"sha256:1a4d5aa7b144d34721442c09cc7c20d5346c89c6feb764c75c338fd81bd2f0f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/263ZPSXUZOJHTWRC35ZH33S7OT/bundle.json","state_url":"https://pith.science/pith/263ZPSXUZOJHTWRC35ZH33S7OT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/263ZPSXUZOJHTWRC35ZH33S7OT/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":"2026-08-06T09:52:18Z","links":{"resolver":"https://pith.science/pith/263ZPSXUZOJHTWRC35ZH33S7OT","bundle":"https://pith.science/pith/263ZPSXUZOJHTWRC35ZH33S7OT/bundle.json","state":"https://pith.science/pith/263ZPSXUZOJHTWRC35ZH33S7OT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/263ZPSXUZOJHTWRC35ZH33S7OT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:263ZPSXUZOJHTWRC35ZH33S7OT","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":"bfd979ed9ea5686b72a2713c949da8e7ce1b1b0b9380bf3b9aae1dc78ea7ecd7","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-08-03T15:16:07Z","title_canon_sha256":"aa369275a9123cb63ac82df5bb4397c5b0fce644012e7a54f8a4b3e35e69b74a"},"schema_version":"1.0","source":{"id":"0808.0325","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.0325","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"arxiv_version","alias_value":"0808.0325v2","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.0325","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"pith_short_12","alias_value":"263ZPSXUZOJH","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"pith_short_16","alias_value":"263ZPSXUZOJHTWRC","created_at":"2026-07-04T17:12:12Z"},{"alias_kind":"pith_short_8","alias_value":"263ZPSXU","created_at":"2026-07-04T17:12:12Z"}],"graph_snapshots":[{"event_id":"sha256:1a4d5aa7b144d34721442c09cc7c20d5346c89c6feb764c75c338fd81bd2f0f3","target":"graph","created_at":"2026-07-04T17:12:12Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0808.0325/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the measurements of anisotropic magnetization and magnetoresistance on single crystals of EuFe$_2$As$_2$, a parent compound of ferro-arsenide high-temperature superconductor. Apart from the antiferromagnetic (AFM) spin-density-wave transition at 186 K associated with Fe moments, the compound undergoes another magnetic phase transition at 19 K due to AFM ordering of Eu$^{2+}$ spins ($J=S=7/2$). The latter AFM state exhibits metamagnetic transition under magnetic fields. Upon applying magnetic field with $H\\parallel c$ at 2 K, the magnetization increases linearly to 7.0 $\\mu_{B}$/f.u. ","authors_text":"Cao Wang, Guanghan Cao, Qian Tao, Shuai Jiang, Xiangfan Xu, Yongkang Luo, Zengwei Zhu, Zhi Ren, Zhu'an Xu","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-08-03T15:16:07Z","title":"Metamagnetic transition in EuFe$_2$As$_2$ single crystals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.0325","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":"sha256:43a30acfc47cec18d934b66f457f2436ebc87cf91a968bc60736cb2d211118d2","target":"record","created_at":"2026-07-04T17:12:12Z","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":"bfd979ed9ea5686b72a2713c949da8e7ce1b1b0b9380bf3b9aae1dc78ea7ecd7","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-08-03T15:16:07Z","title_canon_sha256":"aa369275a9123cb63ac82df5bb4397c5b0fce644012e7a54f8a4b3e35e69b74a"},"schema_version":"1.0","source":{"id":"0808.0325","kind":"arxiv","version":2}},"canonical_sha256":"d7b797caf4cb9279da22df727dee5f74d9999b9b476e7daead4c09b87356e4a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7b797caf4cb9279da22df727dee5f74d9999b9b476e7daead4c09b87356e4a9","first_computed_at":"2026-07-04T17:12:12.995896Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:12:12.995896Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jWQD64L7SJw9n0xVb+5aMkE84gHMnNCQn+lX+8i1KAxhgQwB1WtrP+h7R8GEvf14QEVV4zovsjG9ACLZqDblAg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:12:12.996238Z","signed_message":"canonical_sha256_bytes"},"source_id":"0808.0325","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43a30acfc47cec18d934b66f457f2436ebc87cf91a968bc60736cb2d211118d2","sha256:1a4d5aa7b144d34721442c09cc7c20d5346c89c6feb764c75c338fd81bd2f0f3"],"state_sha256":"07856d51c67f0905cf86a70ccb53b68a13d04ed0ffd1fd93ea6335b1231ca7ea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s/5b0i5YFymOBTkafPcR8pOuRASKVbN3agF2Rmkzq2PJvLuNUdPqEBYW6qQ9NG/eEqZtscr7YV/lEWj9eP5ECw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T09:52:18.179757Z","bundle_sha256":"565252534ffb484072df7cc9ca8f57e9faa06ea0eee51e65b4ca69d589a97157"}}