---
title: Exchange Protocols - CHAPI, VC Api, WACI...
name: Exchange Protocols
layout: standards
headings: ["Background","CHAPI","VC Api","WACI","Message Format","Assorted"]
description: "There are interactions between a wallet and relying party that require passing information between the two."
excerpt: >
  data model and HTTP protocols to issue, verify, present, and manage data used in such an ecosystem. 
permalink: web-standards/exchange-protocol/
canonical_url: https://decentralized-id.com/web-standards/exchange-protocol/
categories: ["Web Standards"]
tags: ["CHAPI","VC Api","WACI","Credentials Community Group","TrustBloc","DIF","Bloom","hyperledger foundation","Human Colossus Foundation"]
last_modified_at: 2023-06-03
---