{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:JMLCWMUUA47B3V5MPAJGVRXO45","short_pith_number":"pith:JMLCWMUU","canonical_record":{"source":{"id":"1311.1302","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-11-06T07:50:27Z","cross_cats_sorted":[],"title_canon_sha256":"e7df6067567b6150a59fa0a69f2fe78f7e7ab4e51f9bba8e17d54e39549a4ddb","abstract_canon_sha256":"8309bec5d03a35492e3ab5fbae8f5f2b6519627a0304755aea884387d0afe681"},"schema_version":"1.0"},"canonical_sha256":"4b162b3294073e1dd7ac78126ac6eee77a4ab23533468ff3b311022a0ffcfadc","source":{"kind":"arxiv","id":"1311.1302","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1302","created_at":"2026-05-18T03:01:10Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1302v1","created_at":"2026-05-18T03:01:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1302","created_at":"2026-05-18T03:01:10Z"},{"alias_kind":"pith_short_12","alias_value":"JMLCWMUUA47B","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JMLCWMUUA47B3V5M","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JMLCWMUU","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:JMLCWMUUA47B3V5MPAJGVRXO45","target":"record","payload":{"canonical_record":{"source":{"id":"1311.1302","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-11-06T07:50:27Z","cross_cats_sorted":[],"title_canon_sha256":"e7df6067567b6150a59fa0a69f2fe78f7e7ab4e51f9bba8e17d54e39549a4ddb","abstract_canon_sha256":"8309bec5d03a35492e3ab5fbae8f5f2b6519627a0304755aea884387d0afe681"},"schema_version":"1.0"},"canonical_sha256":"4b162b3294073e1dd7ac78126ac6eee77a4ab23533468ff3b311022a0ffcfadc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:01:10.010883Z","signature_b64":"WkgS6AOGF8nq16KpGi1CauAlFa+QY/iIybuCymKx2ZJyCnAlk4mMk6gYo0h6czCcFBRttS/OhCpjNl2U8UaBCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b162b3294073e1dd7ac78126ac6eee77a4ab23533468ff3b311022a0ffcfadc","last_reissued_at":"2026-05-18T03:01:10.007276Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:01:10.007276Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.1302","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":"2026-05-18T03:01:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"auIpcmOddge2SGfUeUmpE+BHQqEbv2yek5womuCmCzLUoLBn6KV2BT+k5XFq7FXZFiwP3Z9L6gkLd4cK5UTIAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T03:34:10.336951Z"},"content_sha256":"a35a10810db7344806e85c3d4e43ae5f27938813983213d1b8b8c5118c2a2bbd","schema_version":"1.0","event_id":"sha256:a35a10810db7344806e85c3d4e43ae5f27938813983213d1b8b8c5118c2a2bbd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:JMLCWMUUA47B3V5MPAJGVRXO45","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of New Layered Iron Arsenide Superconductor (Ca,Pr)FeAs2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Akiyasu Yamamoto, Hiraku Ogino, Hiroshi Eisaki, Hiroshi Fujihisa, Hiroyuki Yakita, Jun-ichi Shimoyama, Kohji Kishio, Kunimitsu Kataoka, Tetsuya Tohei, Tomoyuki Okada, Yoshito Gotoh, Yuichi Ikuhara","submitted_at":"2013-11-06T07:50:27Z","abstract_excerpt":"A new iron-based superconductor (Ca,Pr)FeAs2 was discovered. Plate-like crystals of the new phase were obtained and crystal structure was investigated by single-crystal X-ray diffraction analysis. The structure was identified as the monoclinic system with space group P21/m, and is composed of two Ca(Pr) planes, anti-fluorite Fe2As2 layers, and As2 zigzag chain layers. Plate-like crystals composed of the new phase showed superconductivity with Tc ~20 K in both magnetization and resistivity measurements."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1302","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":"2026-05-18T03:01:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iajm0MQq026K4HBSr1DCz4sANTGdn171qOUbHpUuNhUslNdbML98/BuSaFXhqSbYdKHo00CfYtSQj8xceNR8BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T03:34:10.337333Z"},"content_sha256":"1906c3059e7236722a2a31e0fabc08304098815fd160c4d5d9be66484e120167","schema_version":"1.0","event_id":"sha256:1906c3059e7236722a2a31e0fabc08304098815fd160c4d5d9be66484e120167"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JMLCWMUUA47B3V5MPAJGVRXO45/bundle.json","state_url":"https://pith.science/pith/JMLCWMUUA47B3V5MPAJGVRXO45/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JMLCWMUUA47B3V5MPAJGVRXO45/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":"2026-05-22T03:34:10Z","links":{"resolver":"https://pith.science/pith/JMLCWMUUA47B3V5MPAJGVRXO45","bundle":"https://pith.science/pith/JMLCWMUUA47B3V5MPAJGVRXO45/bundle.json","state":"https://pith.science/pith/JMLCWMUUA47B3V5MPAJGVRXO45/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JMLCWMUUA47B3V5MPAJGVRXO45/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:JMLCWMUUA47B3V5MPAJGVRXO45","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":"8309bec5d03a35492e3ab5fbae8f5f2b6519627a0304755aea884387d0afe681","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-11-06T07:50:27Z","title_canon_sha256":"e7df6067567b6150a59fa0a69f2fe78f7e7ab4e51f9bba8e17d54e39549a4ddb"},"schema_version":"1.0","source":{"id":"1311.1302","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1302","created_at":"2026-05-18T03:01:10Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1302v1","created_at":"2026-05-18T03:01:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1302","created_at":"2026-05-18T03:01:10Z"},{"alias_kind":"pith_short_12","alias_value":"JMLCWMUUA47B","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"JMLCWMUUA47B3V5M","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"JMLCWMUU","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:1906c3059e7236722a2a31e0fabc08304098815fd160c4d5d9be66484e120167","target":"graph","created_at":"2026-05-18T03:01:10Z","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":"A new iron-based superconductor (Ca,Pr)FeAs2 was discovered. Plate-like crystals of the new phase were obtained and crystal structure was investigated by single-crystal X-ray diffraction analysis. The structure was identified as the monoclinic system with space group P21/m, and is composed of two Ca(Pr) planes, anti-fluorite Fe2As2 layers, and As2 zigzag chain layers. Plate-like crystals composed of the new phase showed superconductivity with Tc ~20 K in both magnetization and resistivity measurements.","authors_text":"Akiyasu Yamamoto, Hiraku Ogino, Hiroshi Eisaki, Hiroshi Fujihisa, Hiroyuki Yakita, Jun-ichi Shimoyama, Kohji Kishio, Kunimitsu Kataoka, Tetsuya Tohei, Tomoyuki Okada, Yoshito Gotoh, Yuichi Ikuhara","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-11-06T07:50:27Z","title":"Discovery of New Layered Iron Arsenide Superconductor (Ca,Pr)FeAs2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1302","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:a35a10810db7344806e85c3d4e43ae5f27938813983213d1b8b8c5118c2a2bbd","target":"record","created_at":"2026-05-18T03:01:10Z","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":"8309bec5d03a35492e3ab5fbae8f5f2b6519627a0304755aea884387d0afe681","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-11-06T07:50:27Z","title_canon_sha256":"e7df6067567b6150a59fa0a69f2fe78f7e7ab4e51f9bba8e17d54e39549a4ddb"},"schema_version":"1.0","source":{"id":"1311.1302","kind":"arxiv","version":1}},"canonical_sha256":"4b162b3294073e1dd7ac78126ac6eee77a4ab23533468ff3b311022a0ffcfadc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b162b3294073e1dd7ac78126ac6eee77a4ab23533468ff3b311022a0ffcfadc","first_computed_at":"2026-05-18T03:01:10.007276Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:01:10.007276Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WkgS6AOGF8nq16KpGi1CauAlFa+QY/iIybuCymKx2ZJyCnAlk4mMk6gYo0h6czCcFBRttS/OhCpjNl2U8UaBCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:01:10.010883Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.1302","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a35a10810db7344806e85c3d4e43ae5f27938813983213d1b8b8c5118c2a2bbd","sha256:1906c3059e7236722a2a31e0fabc08304098815fd160c4d5d9be66484e120167"],"state_sha256":"3137c47145d99f4807d49bf3c0ef17c4f20c7dd4eabc10b547aa7e07a603bb70"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VX37K3Yz9N4qu0MXItAlZh7nYpAHk2iwasrSj9Lce9MAN09PdBJLVBBVwHYCDyDes2OPkT5Nbx3vsTBAlduqDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T03:34:10.339841Z","bundle_sha256":"0853a78f3f3230677f66f23d7c71f801e014f93b065b0a2ae2b87848f98c6545"}}