{"document_id":"BLC-STUDY-0059","slug":"ekiden","title":"Ekiden: A Platform for Confidentiality-Preserving, Trustworthy, and Performant Smart Contracts","authors":"Raymond Cheng, Fan Zhang, Jernej Kos, Ari Juels, Andrew Miller, Dawn Song and collaborators","year":2019,"date_label":"2019","publisher":"Raymond Cheng, Fan Zhang, Jernej Kos, Ari Juels, Andrew Miller, Dawn Song and collaborators","paper_type":"Design paper","category":"Confidential compute","topics":["Confidential compute"],"source_url":"https://arxiv.org/pdf/1804.05141","source_label":"arXiv:1804.05141","legacy_pdf_path":null,"sha256":null,"sha256_note":"No hash is published. This build does not store those PDF bytes, so a checksum would be invented. Where a legacy path exists, it points at the Internet Archive copy of the old library.","version":"Source cited by the 2019 study. The study is the reading. This page does not add a second essay.","doi":null,"rights_status":"Official external source only","source_status":"Official source","use_status":"Metadata and commentary only. The reading is the study page.","licence":null,"licence_label":"No licence recorded. Rights status under review.","full_text":null,"full_text_reason":"Full text is not published on this page. Public availability is not a licence to republish a document. Blockchain Lab has not recorded a licence that permits an HTML transcription, a training set, or a retrieval corpus of the paper. Text on this page is Blockchain Lab's own wording, or a pointer to a study that is also Blockchain Lab's wording.","editorial_line":"The Ekiden paper: smart contracts that execute inside trusted hardware, with the ledger checking attestations rather than re-executing the private code. Oasis Network is the later production system in this line. The paper is the academic statement of the approach.","canonical_url":"https://blockchainlab.com/whitepaper/ekiden","record_url":"https://blockchainlab.com/research/corpus/papers/ekiden","study_url":"https://blockchainlab.com/whitepaper/ekiden","last_reviewed":"2026-10-01","last_checked":"2026-10-01","relationships":[{"rel":"Canonical reading","label":"Oasis study","href":"/whitepaper/ekiden"},{"rel":"Related paper","label":"Secret Network","href":"/whitepaper/enigma"},{"rel":"Related paper","label":"Diem","href":"/whitepaper/diem"},{"rel":"Related paper","label":"Chainlink","href":"/whitepaper/chainlink"}]}