The CFT-20 token standard describes how we create, mint and transfer fungible tokens using the Meteors metaprotocol framework. It is derived from the initial BRC-20 idea from @redphonecrypto and implementation from @domo. However, it differs in implementation, and takes a more CBRC-20 approach.
The CFT-20 standard is implemented using the Meteors metaprocotol framework. It relies only on the URN in the memo field with the exception of an optional logo that may be specified when creating a token that uses Meteors inscriptions
Creating a new token
urn:cft20:{chain-id}@{version};{operation}${param}={value},{param}={value}
The operation values are:
| Key | Value | Description |
|---|---|---|
| chain-id | cosmoshub-4 | The chain ID for the Cosmos Hub |
| version | v1 | The current version |
| operation | deploy | Deploy a new token |
The required parameters are:
| Param | Description | Restrictions |
|---|---|---|
| nam | The name of the token | Must be 3-32 characters |
| tic | The token ticker, must be unique across all tokens on the same chain-id | Must be 1-10 alphanumeric characters |
| sup | The max supply of the token | Must be less than uint32 max |
| dec | The decimals for the token | Must be between 0 and 6 (inclusive) |
| lim | The maximum tokens that can be minted per transaction | Must be 1% or less than maximum supply |
| opn | The Unix timestamp which after minting becomes possible | Must be a Unix timestamp in seconds |
Minting a token
urn:cft20:{chain-id}@{version};{operation}${param}={value},{param}={value}
The operation values are:
| Key | Value | Description |
|---|---|---|
| chain-id | cosmoshub-4 | The chain ID for the Cosmos Hub |
| version | v1 | The current version |
| operation | mint | Mint the specified amount to the sender's wallet |
The required parameters are:
| Param | Description | Restrictions |
|---|---|---|
| tic | The token ticker, must be unique across all tokens on the same chain-id | Must be 1-10 alphanumeric characters |
| amt | The amount to mint | Must be less than or equal to the token's lim parameter |
Transferring a token
urn:cft20:{chain-id}@{version};{operation}${param}={value},{param}={value}
The operation values are:
| Key | Value | Description |
|---|---|---|
| chain-id | cosmoshub-4 | The chain ID for the Cosmos Hub |
| version | v1 | The current version |
| operation | transfer | Transfer the specified amount to the destination address |
The required parameters are:
| Param | Description | Restrictions |
|---|---|---|
| tic | The token ticker, must be unique across all tokens on the same chain-id | Must be 3-5 characters |
| amt | The amount to transfer | Must be less or equal to the sender's balance |
| dst | The address to transfer to | Any address on the chain-id, the address is not validated |
The first CFT-20 token
All indexers should register Asteroids (ROIDS) as the first CFT-20 token (Token #0). Other CFT-20 tokens are numbered in order, starting at #1, in the order in which they are inscribed.
Trading tokens
Trading is not yet possible, we're working on it