Asset Lists are inspired by the Token Lists project on Ethereum which helps discoverability of ERC20 tokens by providing a mapping between erc20 contract addresses and their associated metadata.
Asset lists are a similar mechanism to allow frontends and other UIs to fetch metadata associated with Cosmos SDK denoms, especially for assets sent over IBC.
This standard is a work in progress. You'll notice that the format of assets in the assetlist.json structure is a strict superset json representation of the banktypes.DenomMetadata from the Cosmos SDK. This is purposefully done so that this standard may eventually be migrated into a Cosmos SDK module in the future, so it can be easily maintained on chain instead of on Github.
The assetlist JSON Schema can be found here
An example assetlist json contains the following structure:
{
"chain_id": "steak-chain-1",
"assets": [
{
"description": "The native token of Steak Chain",
"denom_units": [
{
"denom": "usteak",
"exponent": 0,
"aliases": []
},
{
"denom": "steak",
"exponent": 6,
"aliases": []
}
],
"base": "usteak",
"display": "steak",
"symbol": "STK",
"logo_URIs": {
"png": "https://github.com/linkto/image.png",
"svg": "https://stake.com/linkto/steak.svg"
}
},
{
"description": "Foocoin is the native token of the Foochain",
"denom_units": [
{
"denom": "ibc/6ED71011FFBD0D137AFDB6AC574E9E100F61BA3DD44A8C05ECCE7E59D40A7B3E",
"exponent": 0,
"aliases": ["ufoocoin"]
},
{
"denom": "foocoin",
"exponent": 6,
"aliases": []
}
],
"base": "ibc/6ED71011FFBD0D137AFDB6AC574E9E100F61BA3DD44A8C05ECCE7E59D40A7B3E",
"display": "foocoin",
"symbol": "FOO",
"ibc": {
"source_channel": "channel-35",
"dst_channel": "channel-1",
"source_denom": "ufoocoin"
},
"logo_URIs": {
"png": "ipfs://QmXfzKRvjZz3u5JRgC4v5mGVbm9ahrUiB4DgzHBsnWbTMM",
"svg": ""
}
}
]
}