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This repository contains all the technical specifications around the NOCUST protocol from the core components such as the ledger, cryptographic primitives. But also adjacent protocols such as TEX, invoices etc.. It explains the design rationals, describe the different protocols and its use should suffice to implement NOCUST client or server applications.


Each NOCUST spec proposal should follow a strict template. To start a new nspec copy the template, fill the different fields and submit a PR.

The stage field specify the maturity of a protocol specification. It is to be interpreted as describe in the document.

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC2119 when, and only when, they appear in all capitals, as shown here.

Data structures and function signatures are described using the Typescript 3.5 syntax.

NOCUST specifications

All the current standard from the "draft" stage are listed here:

Nspec number Specification Title Stage
001 Glossary Draft
002 NOCUST Contract Methods Draft
003 NOCUST contract Operation Draft
004 Cryptographic Primitives Draft
005 Bimodal Ledger Draft
006 Client Protocol Draft
007 Challenge Protocol Draft
008 Server protocol Draft


Dependencies between each nspec document are set in the header of the file.

graph TD; 002(002-nspec-nocust-contract-methods) 005(005-nspec-bimodal-ledger)-->004(004-nspec-cryptographic-primitives) 006(006-nspec-client-protocol)-->004 006-->005 007(007-nspec-challenge-protocol)-->006 007-->005 005-->003(003-nspec-nocust-contract-operation) 006-->003 003-->004 001(001-nspec-glossary) 008(008-nspec-server-protocol)-->005 008-->004 007-->008 008-->003


Install gitbook CLI globally: npm install gitbook-cli -g

Install the plugins: gitbook install

Build the docs: gitbook build . ./docs/

Run a local dev server: gitbook serve

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