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CAIP 20specificationDraftchain-identification

Asset Reference for the SLIP44 Asset Namespace

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

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Antoine Herzog (@antoineherzog), Pedro Gomes (@pedrouid), Joel Thorstensson (@oed)·Updated Mar 29, 2026·0 reviews·0 attestations·View source
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Specification

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

Copyright and related rights waived via CC0.

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