{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:VFJSMBJPA25FD4RFUASMQVOHIS","short_pith_number":"pith:VFJSMBJP","canonical_record":{"source":{"id":"0806.1265","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-06-09T19:07:57Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"6d72633db4affa26c61774a5d32f5f07d5d3858875928347f96e18e646ca3482","abstract_canon_sha256":"b04e143af62c1081e65c15d4867a217a0d8a32b7c127f1a60325c3a6a1c20860"},"schema_version":"1.0"},"canonical_sha256":"a95326052f06ba51f225a024c855c744b899d8c630e2c1d83ef68c51ca6ddf89","source":{"kind":"arxiv","id":"0806.1265","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.1265","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"arxiv_version","alias_value":"0806.1265v2","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.1265","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"pith_short_12","alias_value":"VFJSMBJPA25F","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"pith_short_16","alias_value":"VFJSMBJPA25FD4RF","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"pith_short_8","alias_value":"VFJSMBJP","created_at":"2026-07-04T15:14:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:VFJSMBJPA25FD4RFUASMQVOHIS","target":"record","payload":{"canonical_record":{"source":{"id":"0806.1265","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-06-09T19:07:57Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"6d72633db4affa26c61774a5d32f5f07d5d3858875928347f96e18e646ca3482","abstract_canon_sha256":"b04e143af62c1081e65c15d4867a217a0d8a32b7c127f1a60325c3a6a1c20860"},"schema_version":"1.0"},"canonical_sha256":"a95326052f06ba51f225a024c855c744b899d8c630e2c1d83ef68c51ca6ddf89","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:14:08.468373Z","signature_b64":"Bm0tBpD9Zc73FMIYoff9JOB57UqTV4YwFs3DWUQaGqD+L3ub6nV3T23kBenXh8MWwS248LF2Be+LyE6vxpnSAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a95326052f06ba51f225a024c855c744b899d8c630e2c1d83ef68c51ca6ddf89","last_reissued_at":"2026-07-04T15:14:08.467967Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:14:08.467967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0806.1265","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":"2026-07-04T15:14:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"02FQsgflNISVDtEZUKdUqh9DTzwjfKBROwf40LRLnpilMDg2QpANz/Xfan0I0jaRC+01/xsOsLA8y5Hao9YMCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T23:20:22.828884Z"},"content_sha256":"3e3a9d22a065e8ebc7321fd620874dde02da71525d0b93e5ce5b4c9f932c576a","schema_version":"1.0","event_id":"sha256:3e3a9d22a065e8ebc7321fd620874dde02da71525d0b93e5ce5b4c9f932c576a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:VFJSMBJPA25FD4RFUASMQVOHIS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superconductivity in single crystals of LaFePO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"D. A. Zocco, J. J. Hamlin, M. B. Maple, R. E. Baumbach, T. A. Sayles","submitted_at":"2008-06-09T19:07:57Z","abstract_excerpt":"Single crystals of the compound LaFePO were prepared using a flux growth technique at high temperatures. Electrical resistivity measurements reveal metallic behavior and a resistive transition to the superconducting state at a critical temperature T_c ~ 6.6 K. Magnetization measurements also show the onset of superconductivity near 6 K. In contrast, specific heat measurements manifest no discontinuity at T_c. These results lend support to the conclusion that the superconductivity is associated with oxygen vacancies that alter the carrier concentration in a small fraction of the sample, althoug"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.1265","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/0806.1265/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":"2026-07-04T15:14:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aBkoZV+CgeVlokc7wJDFTu7QJ0i/+LwH1d8mWA/u+nsMQ2PcsucC3U6nFMIDkMiDOBjLDZtM7ec2jpD7RlZbCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T23:20:22.829250Z"},"content_sha256":"0e2695555ecca556f70a95200f403b21b64cc8a8237d29d252b8c48c80e6c470","schema_version":"1.0","event_id":"sha256:0e2695555ecca556f70a95200f403b21b64cc8a8237d29d252b8c48c80e6c470"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VFJSMBJPA25FD4RFUASMQVOHIS/bundle.json","state_url":"https://pith.science/pith/VFJSMBJPA25FD4RFUASMQVOHIS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VFJSMBJPA25FD4RFUASMQVOHIS/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":"2026-07-04T23:20:22Z","links":{"resolver":"https://pith.science/pith/VFJSMBJPA25FD4RFUASMQVOHIS","bundle":"https://pith.science/pith/VFJSMBJPA25FD4RFUASMQVOHIS/bundle.json","state":"https://pith.science/pith/VFJSMBJPA25FD4RFUASMQVOHIS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VFJSMBJPA25FD4RFUASMQVOHIS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:VFJSMBJPA25FD4RFUASMQVOHIS","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":"b04e143af62c1081e65c15d4867a217a0d8a32b7c127f1a60325c3a6a1c20860","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-06-09T19:07:57Z","title_canon_sha256":"6d72633db4affa26c61774a5d32f5f07d5d3858875928347f96e18e646ca3482"},"schema_version":"1.0","source":{"id":"0806.1265","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0806.1265","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"arxiv_version","alias_value":"0806.1265v2","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0806.1265","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"pith_short_12","alias_value":"VFJSMBJPA25F","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"pith_short_16","alias_value":"VFJSMBJPA25FD4RF","created_at":"2026-07-04T15:14:08Z"},{"alias_kind":"pith_short_8","alias_value":"VFJSMBJP","created_at":"2026-07-04T15:14:08Z"}],"graph_snapshots":[{"event_id":"sha256:0e2695555ecca556f70a95200f403b21b64cc8a8237d29d252b8c48c80e6c470","target":"graph","created_at":"2026-07-04T15:14:08Z","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/0806.1265/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Single crystals of the compound LaFePO were prepared using a flux growth technique at high temperatures. Electrical resistivity measurements reveal metallic behavior and a resistive transition to the superconducting state at a critical temperature T_c ~ 6.6 K. Magnetization measurements also show the onset of superconductivity near 6 K. In contrast, specific heat measurements manifest no discontinuity at T_c. These results lend support to the conclusion that the superconductivity is associated with oxygen vacancies that alter the carrier concentration in a small fraction of the sample, althoug","authors_text":"D. A. Zocco, J. J. Hamlin, M. B. Maple, R. E. Baumbach, T. A. Sayles","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-06-09T19:07:57Z","title":"Superconductivity in single crystals of LaFePO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0806.1265","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":"sha256:3e3a9d22a065e8ebc7321fd620874dde02da71525d0b93e5ce5b4c9f932c576a","target":"record","created_at":"2026-07-04T15:14:08Z","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":"b04e143af62c1081e65c15d4867a217a0d8a32b7c127f1a60325c3a6a1c20860","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-06-09T19:07:57Z","title_canon_sha256":"6d72633db4affa26c61774a5d32f5f07d5d3858875928347f96e18e646ca3482"},"schema_version":"1.0","source":{"id":"0806.1265","kind":"arxiv","version":2}},"canonical_sha256":"a95326052f06ba51f225a024c855c744b899d8c630e2c1d83ef68c51ca6ddf89","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a95326052f06ba51f225a024c855c744b899d8c630e2c1d83ef68c51ca6ddf89","first_computed_at":"2026-07-04T15:14:08.467967Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:14:08.467967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Bm0tBpD9Zc73FMIYoff9JOB57UqTV4YwFs3DWUQaGqD+L3ub6nV3T23kBenXh8MWwS248LF2Be+LyE6vxpnSAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:14:08.468373Z","signed_message":"canonical_sha256_bytes"},"source_id":"0806.1265","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e3a9d22a065e8ebc7321fd620874dde02da71525d0b93e5ce5b4c9f932c576a","sha256:0e2695555ecca556f70a95200f403b21b64cc8a8237d29d252b8c48c80e6c470"],"state_sha256":"e4498eaf8db01ec1e27b489d947390c61e1380bf30ac5b2a5708d7b18c73a86a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tRWKJ2P0pVo6NMAcJ0SwO6QVbzgHqmQUvOrUFT7pmIaOvOr5mfg3D/n60xzXAgNVB9TZ1gFSSMj2uv9BdUYrDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T23:20:22.831195Z","bundle_sha256":"8370cb5094c06b9c9e1ed6fe2f817ef3048b8e44c90f90bbe0c35c34e8fb1e56"}}