This is an IBC Enabled contract that allows sending NFTs from one CosmWasm chain over the ICS721 (draft) standard to another CosmWasm chain.
It can be extended to also send NFTs from a CosmWasm chain to the native NFT module on a Cosmos SDK chain that doesn't have CosmWasm support.
Similar to cw20-ics20, the contract starts with minimal state, just the default timeout for all the packets it sends.
An external party has to make one or more channels using this contract as one endpoint.
You can send any SG721 token to this contract via the receiver pattern.
This contract only accepts a Sg721ReceiveMsg from a sg721 contract.
pub struct Sg721ReceiveMsg {
pub sender: String,
pub token_id: String,
pub msg: Binary,
}The data inside the message must be JSON-serialized.
pub struct TransferMsg {
/// The local channel to send the packets on
pub channel: String,
/// The remote address to send to
/// Don't use HumanAddress as this will likely have a different Bech32 prefix than we use
/// and cannot be validated locally
pub remote_address: String,
/// How long the packet lives in seconds. If not specified, use default_timeout
pub timeout: Option<u64>,
}Queries only make sense relative to the established channels of this contract.
Port{}- returns the port ID this contract has bound, so you can create channels. This info can be queried via wasmd contract info query, but we expose another query here for convenience.ListChannels{}- returns a (currently unpaginated) list of all channels that have been created on this contract. Returns their local channelId along with some basic metadata, like the remote port/channel and the connection they run on top of.Channel{id}- returns more detailed information on one specific channel. In addition to the information available in the list view, it returns the list of class_ids (which include the contract address).Tokens{channel_id, class_id}- returns all the tokens that have been sent through the channel for a specific class-id.
This README was adapted from the cw20-ics20 README.