{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PGHDPIY3YFN6YHZVXJQPR73J2S","short_pith_number":"pith:PGHDPIY3","canonical_record":{"source":{"id":"1510.08629","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-10-29T10:34:36Z","cross_cats_sorted":[],"title_canon_sha256":"a047bd145c98e9c85e69b05c63ef49f14cad758d5702f2055825130ad45576e9","abstract_canon_sha256":"9ea194d86b6a194bd1236ab7e6722886bdfcb87614dc2e2c895d106e11c60194"},"schema_version":"1.0"},"canonical_sha256":"798e37a31bc15bec1f35ba60f8ff69d4bf24e6e9e893739b73d400ded28edde4","source":{"kind":"arxiv","id":"1510.08629","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.08629","created_at":"2026-05-18T01:22:57Z"},{"alias_kind":"arxiv_version","alias_value":"1510.08629v1","created_at":"2026-05-18T01:22:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.08629","created_at":"2026-05-18T01:22:57Z"},{"alias_kind":"pith_short_12","alias_value":"PGHDPIY3YFN6","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PGHDPIY3YFN6YHZV","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PGHDPIY3","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PGHDPIY3YFN6YHZVXJQPR73J2S","target":"record","payload":{"canonical_record":{"source":{"id":"1510.08629","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-10-29T10:34:36Z","cross_cats_sorted":[],"title_canon_sha256":"a047bd145c98e9c85e69b05c63ef49f14cad758d5702f2055825130ad45576e9","abstract_canon_sha256":"9ea194d86b6a194bd1236ab7e6722886bdfcb87614dc2e2c895d106e11c60194"},"schema_version":"1.0"},"canonical_sha256":"798e37a31bc15bec1f35ba60f8ff69d4bf24e6e9e893739b73d400ded28edde4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:57.423734Z","signature_b64":"5Eo1UNGfhD3BatcbhcfKGsCOqxzY/MDZ/sWakfJhxrJj8rntH0H7PL+uqAH3kv03YyJ9e+nDeCnfgM2FsjHrBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"798e37a31bc15bec1f35ba60f8ff69d4bf24e6e9e893739b73d400ded28edde4","last_reissued_at":"2026-05-18T01:22:57.423144Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:57.423144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.08629","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":"2026-05-18T01:22:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5dZVRu7aB/5cRL+XUi2p2txBMd5oVlmnz/8eKZ9CL8Hl6OZkda9z2TAUHf7xtvMN0X85g7pf2jAg2WoIv6I/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:51:56.251881Z"},"content_sha256":"7861f62a540133c390d44e55cc4054a8ab72bb7c21e3314d79ed9f7da9b67801","schema_version":"1.0","event_id":"sha256:7861f62a540133c390d44e55cc4054a8ab72bb7c21e3314d79ed9f7da9b67801"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PGHDPIY3YFN6YHZVXJQPR73J2S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resistive superconducting transition and effects of atmospheric exposure in the intercalation superconductor Ax(C2H8N2)yFe2-zSe2 (A = Li, Na)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"M. Kato, S. Hosono, T. Hatakeda, T. Kawamata, T. Noji, Y. Koike","submitted_at":"2015-10-29T10:34:36Z","abstract_excerpt":"We have succeeded in observing zero-resistivity in newly discovered intercalation superconductors Ax(C2H8N2)yFe2-zSe2 (A = Li, Na) with Tc = 45 K, using the sintered pellet samples. The electrical resistivity, \\r{ho}, in the normal state is metallic and Tconset defined in the $\\rho$ measurements, is as high as ~ 57 K. We have also investigated effects of the atmospheric exposure in Lix(C2H8N2)yFe2-zSe2. It has been found that both the crystal structure and superconductivity are maintained at least up to several days, indicating this material is comparatively resistant to the atmospheric exposu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.08629","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":"2026-05-18T01:22:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dgCQQKOzWiBZBtJl4Mh0Mqh9MTsePUJzYB0k39ieIgNOZJ2C4mZ/L0bELnYfek2XhkRnOB4aPNWKYEr75RA2Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:51:56.252236Z"},"content_sha256":"7e1227d09a07043f03652ba87eb8a9b8afd6df35ed96e8db9f09759ac41d5e08","schema_version":"1.0","event_id":"sha256:7e1227d09a07043f03652ba87eb8a9b8afd6df35ed96e8db9f09759ac41d5e08"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PGHDPIY3YFN6YHZVXJQPR73J2S/bundle.json","state_url":"https://pith.science/pith/PGHDPIY3YFN6YHZVXJQPR73J2S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PGHDPIY3YFN6YHZVXJQPR73J2S/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":"2026-05-27T02:51:56Z","links":{"resolver":"https://pith.science/pith/PGHDPIY3YFN6YHZVXJQPR73J2S","bundle":"https://pith.science/pith/PGHDPIY3YFN6YHZVXJQPR73J2S/bundle.json","state":"https://pith.science/pith/PGHDPIY3YFN6YHZVXJQPR73J2S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PGHDPIY3YFN6YHZVXJQPR73J2S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PGHDPIY3YFN6YHZVXJQPR73J2S","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":"9ea194d86b6a194bd1236ab7e6722886bdfcb87614dc2e2c895d106e11c60194","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-10-29T10:34:36Z","title_canon_sha256":"a047bd145c98e9c85e69b05c63ef49f14cad758d5702f2055825130ad45576e9"},"schema_version":"1.0","source":{"id":"1510.08629","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.08629","created_at":"2026-05-18T01:22:57Z"},{"alias_kind":"arxiv_version","alias_value":"1510.08629v1","created_at":"2026-05-18T01:22:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.08629","created_at":"2026-05-18T01:22:57Z"},{"alias_kind":"pith_short_12","alias_value":"PGHDPIY3YFN6","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PGHDPIY3YFN6YHZV","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PGHDPIY3","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:7e1227d09a07043f03652ba87eb8a9b8afd6df35ed96e8db9f09759ac41d5e08","target":"graph","created_at":"2026-05-18T01:22:57Z","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":"We have succeeded in observing zero-resistivity in newly discovered intercalation superconductors Ax(C2H8N2)yFe2-zSe2 (A = Li, Na) with Tc = 45 K, using the sintered pellet samples. The electrical resistivity, \\r{ho}, in the normal state is metallic and Tconset defined in the $\\rho$ measurements, is as high as ~ 57 K. We have also investigated effects of the atmospheric exposure in Lix(C2H8N2)yFe2-zSe2. It has been found that both the crystal structure and superconductivity are maintained at least up to several days, indicating this material is comparatively resistant to the atmospheric exposu","authors_text":"M. Kato, S. Hosono, T. Hatakeda, T. Kawamata, T. Noji, Y. Koike","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-10-29T10:34:36Z","title":"Resistive superconducting transition and effects of atmospheric exposure in the intercalation superconductor Ax(C2H8N2)yFe2-zSe2 (A = Li, Na)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.08629","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":"sha256:7861f62a540133c390d44e55cc4054a8ab72bb7c21e3314d79ed9f7da9b67801","target":"record","created_at":"2026-05-18T01:22:57Z","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":"9ea194d86b6a194bd1236ab7e6722886bdfcb87614dc2e2c895d106e11c60194","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-10-29T10:34:36Z","title_canon_sha256":"a047bd145c98e9c85e69b05c63ef49f14cad758d5702f2055825130ad45576e9"},"schema_version":"1.0","source":{"id":"1510.08629","kind":"arxiv","version":1}},"canonical_sha256":"798e37a31bc15bec1f35ba60f8ff69d4bf24e6e9e893739b73d400ded28edde4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"798e37a31bc15bec1f35ba60f8ff69d4bf24e6e9e893739b73d400ded28edde4","first_computed_at":"2026-05-18T01:22:57.423144Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:57.423144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5Eo1UNGfhD3BatcbhcfKGsCOqxzY/MDZ/sWakfJhxrJj8rntH0H7PL+uqAH3kv03YyJ9e+nDeCnfgM2FsjHrBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:57.423734Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.08629","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7861f62a540133c390d44e55cc4054a8ab72bb7c21e3314d79ed9f7da9b67801","sha256:7e1227d09a07043f03652ba87eb8a9b8afd6df35ed96e8db9f09759ac41d5e08"],"state_sha256":"db31ef14ce2278a84ba2a72ebd0915a5627e76c33575b3af19c4cae203880911"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ld2sqBU7WzOY2Tk3imwtKGoXefGTfU24CAFjZc+qzUy3JWqjOq9BhOd2lwjNaAoFhZRuQO9SOnLBAEJquDzUCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:51:56.254358Z","bundle_sha256":"7f673f4b151b451bd18efca36fc331fc1e87b8d713565248bf312dc212b7baf7"}}