erc721.md

ERC20-token deployment guide

This ERC20 token example is just one of many ways a token canister can be developed and still conform to EXT standards. Note the following for this example:

• No notifications - these can be added in future. The notify field is ignored
• All TokenIDs are ignored, but must be present (you can use any text field e.g. "")
• You can use the canister id as the token id (note for using with Stoic)
• No memo's - this can be added in future with notifications. The memo field is ignored
• No erc20 transferFrom - you can use the transfer call and change the from address

Deploy locally and test

The following deploys a test token (Me Token/MET) and mints the entire supply to the provided principal. We then follow with some basic tests:

dfx canister create ext_erc20
dfx build ext_erc20
dfx canister install ext_erc20 --argument="(\"Me Token\", \"MET\", 3, 100000000:nat, principal \"sensj-ihxp6-tyvl7-7zwvj-fr42h-7ojjp-n7kxk-z6tvo-vxykp-umhfk-wqe\")"

//Get canister ID
dfx canister id ext_erc20

//Supply
dfx canister call ext_erc20 supply "(\"\")"

//Metadata
dfx canister call ext_erc20 metadata "(\"\")"

//Balance - can query using the principal or address
dfx canister call ext_erc20 balance "(record { user = (variant { \"principal\" = principal \"sensj-ihxp6-tyvl7-7zwvj-fr42h-7ojjp-n7kxk-z6tvo-vxykp-umhfk-wqe\" }); token = \"\" } )"
dfx canister call ext_erc20 balance "(record { user = (variant { address = \"86d374abf9b9c532108cc15a7a9e6d21ac6dddd8d34b5babaf7e6244e6d1a638\" }); token = \"\" } )"

Deploy live and load into Stoic

To deploy live, you would follow the same as above except you should:

1. Set the network to ic - i.e. --network ic
2. Set cycles when creating the canister

The following will deploy live with 2T cycles (please ensure you have enough cycles)

dfx canister --network ic create ext_erc20 --with-cycles 2000000000000
dfx build --network ic ext_erc20
dfx canister --network ic install ext_erc20 --argument="(\"Toniq Token\", \"NIQ\", 6, 100_000_000_000_000:nat, principal \"sensj-ihxp6-tyvl7-7zwvj-fr42h-7ojjp-n7kxk-z6tvo-vxykp-umhfk-wqe\")"

//Get canister ID
dfx canister --network ic id ext_erc20

You can then take the canister ID and load it directly into Stoic: