CAIP-20: Asset Reference for the SLIP44 Asset Namespace

Author	Antoine Herzog, Pedro Gomes, Joel Thorstensson
Discussions-To	https://github.com/ChainAgnostic/CAIPs/pull/19
Status	Draft
Type	Standard
Created	2020-06-23
Updated	2020-06-23
Requires	19

Simple Summary
Abstract
Motivation
Specification
- SLIP44 Asset Namespace
Rationale
Backwards Compatibility
Test Cases
Copyright

Simple Summary

This document is about the details of the SLIP44 asset namespace and reference for CAIP-19.

Abstract

In CAIP-19 a general asset identification scheme is defined. This is the implementation of CAIP-19 for SLIP44 (referencing native fungible coins).

Motivation

See CAIP-19.

Specification

SLIP44 Asset Namespace

The asset namespace is called “slip44” as in SLIP44. It reference native fungible coins of most of the existing blockchains.

Asset Reference Definition

The definition is delegated to SLIP44. The format is an unsigned integer in decimal representation and corresponds to index of SLIP44.

Note: due to length restrictions of the reference field (64 characters), the largest supported index is 9999999999999999999999999999999999999999999999999999999999999999.

Rationale

The index defined in SLIP44 is the most widely used coin identifier to the authors. It strives for uniqueness for native coins.

Backwards Compatibility

Not applicable

Test Cases

This is a list of manually composed examples

# Ether Token
eip155:1/slip44:60

# Bitcoin Token
bip122:000000000019d6689c085ae165831e93/slip44:0

# ATOM Token
cosmos:cosmoshub-3/slip44:118

# Litecoin Token
bip122:12a765e31ffd4059bada1e25190f6e98/slip44:2

# Binance Token
cosmos:Binance-Chain-Tigris/slip44:714

# IOV Token
cosmos:iov-mainnet/slip44:234

Copyright

Citation

Please cite this document as:

Antoine Herzog, Pedro Gomes, Joel Thorstensson, "CAIP-20: Asset Reference for the SLIP44 Asset Namespace [DRAFT]," Chain Agnostic Improvement Proposals, no. 20, June 2020. [Online serial]. Available: https://github.com/ChainAgnostic/CAIPs/blob/master/CAIPs/caip-20.md