{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PUESUWVWQNPPM2CZGTLJORDDMS","short_pith_number":"pith:PUESUWVW","canonical_record":{"source":{"id":"1101.4800","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-01-25T13:03:33Z","cross_cats_sorted":[],"title_canon_sha256":"2f40452ac0029bb68770664229eba674e58ac972b1b82e80e94c86634365880c","abstract_canon_sha256":"3b381f362079932e9c2aff778823fb22e831a7ce63d344cb57ac0b8ab040144f"},"schema_version":"1.0"},"canonical_sha256":"7d092a5ab6835ef6685934d69744636480e4f2db98b0e4618731bc437ed8c442","source":{"kind":"arxiv","id":"1101.4800","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.4800","created_at":"2026-05-18T04:25:25Z"},{"alias_kind":"arxiv_version","alias_value":"1101.4800v1","created_at":"2026-05-18T04:25:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4800","created_at":"2026-05-18T04:25:25Z"},{"alias_kind":"pith_short_12","alias_value":"PUESUWVWQNPP","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PUESUWVWQNPPM2CZ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PUESUWVW","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PUESUWVWQNPPM2CZGTLJORDDMS","target":"record","payload":{"canonical_record":{"source":{"id":"1101.4800","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-01-25T13:03:33Z","cross_cats_sorted":[],"title_canon_sha256":"2f40452ac0029bb68770664229eba674e58ac972b1b82e80e94c86634365880c","abstract_canon_sha256":"3b381f362079932e9c2aff778823fb22e831a7ce63d344cb57ac0b8ab040144f"},"schema_version":"1.0"},"canonical_sha256":"7d092a5ab6835ef6685934d69744636480e4f2db98b0e4618731bc437ed8c442","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:25:25.509084Z","signature_b64":"QFtdLIWRYy/mmxR/RbI614G0yfTydIke29YdJ7JvUb4yI3mVeWe5DYaJPG99UQixgoPo77SKhQ/XA+UVPGJtAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d092a5ab6835ef6685934d69744636480e4f2db98b0e4618731bc437ed8c442","last_reissued_at":"2026-05-18T04:25:25.508223Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:25:25.508223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.4800","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":"2026-05-18T04:25:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1p6YhJ3QnkHQrOynEd8j6t9/aY4egOnqjdW2R3Fx4NwIHTCgjefo9xeFiDOLgl+WcyNZAzpNicFFQ014IM5zBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:18:17.365977Z"},"content_sha256":"803230a85292771327faffa33986c78a7ef5283fd78a99e9469baae1b31980a0","schema_version":"1.0","event_id":"sha256:803230a85292771327faffa33986c78a7ef5283fd78a99e9469baae1b31980a0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PUESUWVWQNPPM2CZGTLJORDDMS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Epitaxial refractory-metal buer layers with a chemical gradient for adjustable lattice parameter and controlled chemical interface","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. L'Hoir (INSP), Anthony Rousseau (NEEL), Didier Schmaus (INSP), L. Ortega (NEEL), Olivier Fruchart (NEEL), Richard Haettel (NEEL)","submitted_at":"2011-01-25T13:03:33Z","abstract_excerpt":"We have developed and characterized the structure and composition of nanometers-thick solid-solution epitaxial layers of (V,Nb) on sapphire (1120), displaying a continuous lateral gradient of composition from one to another pure element. Further covered with an ultrathin pseudomorphic layer of W, these provide a template for the fast combinatorial investigation of any growth or physical property depending of strain."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4800","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":"2026-05-18T04:25:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gulENMUR++xGHJtwq1XBYAIMTWFcko9/tCNaohM2F2fOYt2SdRK7zj8IrBkMGoWlG/74Pi0puZMMTx1xcXHKCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:18:17.366330Z"},"content_sha256":"7f74393bbebf07dff929d57d1f46b2fde68ebb772e8c68fb3710b505119f913b","schema_version":"1.0","event_id":"sha256:7f74393bbebf07dff929d57d1f46b2fde68ebb772e8c68fb3710b505119f913b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PUESUWVWQNPPM2CZGTLJORDDMS/bundle.json","state_url":"https://pith.science/pith/PUESUWVWQNPPM2CZGTLJORDDMS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PUESUWVWQNPPM2CZGTLJORDDMS/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":"2026-05-30T07:18:17Z","links":{"resolver":"https://pith.science/pith/PUESUWVWQNPPM2CZGTLJORDDMS","bundle":"https://pith.science/pith/PUESUWVWQNPPM2CZGTLJORDDMS/bundle.json","state":"https://pith.science/pith/PUESUWVWQNPPM2CZGTLJORDDMS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PUESUWVWQNPPM2CZGTLJORDDMS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PUESUWVWQNPPM2CZGTLJORDDMS","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":"3b381f362079932e9c2aff778823fb22e831a7ce63d344cb57ac0b8ab040144f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-01-25T13:03:33Z","title_canon_sha256":"2f40452ac0029bb68770664229eba674e58ac972b1b82e80e94c86634365880c"},"schema_version":"1.0","source":{"id":"1101.4800","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.4800","created_at":"2026-05-18T04:25:25Z"},{"alias_kind":"arxiv_version","alias_value":"1101.4800v1","created_at":"2026-05-18T04:25:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4800","created_at":"2026-05-18T04:25:25Z"},{"alias_kind":"pith_short_12","alias_value":"PUESUWVWQNPP","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PUESUWVWQNPPM2CZ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PUESUWVW","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:7f74393bbebf07dff929d57d1f46b2fde68ebb772e8c68fb3710b505119f913b","target":"graph","created_at":"2026-05-18T04:25:25Z","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 developed and characterized the structure and composition of nanometers-thick solid-solution epitaxial layers of (V,Nb) on sapphire (1120), displaying a continuous lateral gradient of composition from one to another pure element. Further covered with an ultrathin pseudomorphic layer of W, these provide a template for the fast combinatorial investigation of any growth or physical property depending of strain.","authors_text":"A. L'Hoir (INSP), Anthony Rousseau (NEEL), Didier Schmaus (INSP), L. Ortega (NEEL), Olivier Fruchart (NEEL), Richard Haettel (NEEL)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-01-25T13:03:33Z","title":"Epitaxial refractory-metal buer layers with a chemical gradient for adjustable lattice parameter and controlled chemical interface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4800","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":"sha256:803230a85292771327faffa33986c78a7ef5283fd78a99e9469baae1b31980a0","target":"record","created_at":"2026-05-18T04:25:25Z","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":"3b381f362079932e9c2aff778823fb22e831a7ce63d344cb57ac0b8ab040144f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2011-01-25T13:03:33Z","title_canon_sha256":"2f40452ac0029bb68770664229eba674e58ac972b1b82e80e94c86634365880c"},"schema_version":"1.0","source":{"id":"1101.4800","kind":"arxiv","version":1}},"canonical_sha256":"7d092a5ab6835ef6685934d69744636480e4f2db98b0e4618731bc437ed8c442","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d092a5ab6835ef6685934d69744636480e4f2db98b0e4618731bc437ed8c442","first_computed_at":"2026-05-18T04:25:25.508223Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:25:25.508223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QFtdLIWRYy/mmxR/RbI614G0yfTydIke29YdJ7JvUb4yI3mVeWe5DYaJPG99UQixgoPo77SKhQ/XA+UVPGJtAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:25:25.509084Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.4800","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:803230a85292771327faffa33986c78a7ef5283fd78a99e9469baae1b31980a0","sha256:7f74393bbebf07dff929d57d1f46b2fde68ebb772e8c68fb3710b505119f913b"],"state_sha256":"69742cf0738f596e63ff3f669bf75ab4ee047806df2ab172c7fc91da92cb75e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0BBBaZ7Ua9DJaznnJ44mEbYdawNxkQiQGiHDr/A3ZP3ug9Q/iYJERv1VdKw2v1bl2vUZhjpLeHPgyFeNuwAABw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T07:18:17.368243Z","bundle_sha256":"55cdac43b237e6ec012ce90a6520f4ee8b61e6b715f4e13a0166472041ab5a2b"}}