{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/coconut-threshold-issuance-selective","title":"Coconut: Threshold Issuance Selective Disclosure Credentials with Applications to Distributed Ledgers","arxiv_id":"1802.07344","date":"2018-02-20","proceeding":null,"authors":["Alberto Sonnino","Mustafa Al-Bassam","Shehar Bano","Sarah Meiklejohn","George Danezis"],"abstract":"Coconut is a novel selective disclosure credential scheme supporting distributed threshold issuance, public and private attributes, re-randomization, and multiple unlinkable selective attribute revelations. Coconut integrates with blockchains to ensure confidentiality, authenticity and availability even when a subset of credential issuing authorities are malicious or offline. We implement and evaluate a generic Coconut smart contract library for Chainspace and Ethereum; and present three applications related to anonymous payments, electronic petitions, and distribution of proxies for censorship resistance. Coconut uses short and computationally efficient credentials, and our evaluation shows that most Coconut cryptographic primitives take just a few milliseconds on average, with verification taking the longest time (10 milliseconds).","url_abs":"http://arxiv.org/abs/1802.07344v3","url_pdf":"http://arxiv.org/pdf/1802.07344v3.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/asonnino/coconut","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/asonnino/coconut-chainspace","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/alan-turing-institute/rss","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/dyne/reflow-crypto","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/hhalpin/nym","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/lovesh/coconut-rust","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/nymtech/coconut","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null},{"paper_slug":"coconut-threshold-issuance-selective","repo_url":"https://github.com/nymtech/nym","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}