ERC20

ERC20

https://theethereum.wiki/w/index.php/ERC20_Token_Standard

Commonly used standard for creating tokens on Ethereum. This implementation of the ERC20 on Fabric is not covering all of the functions. The idea is demonstrate the creation of standard token on Hyeprledger Fabric. For more information please refer to the website link above. To keep things simple this implementation identifies users by "unique id" rather than the public key (in Ethereum)

Functions

• Token created as part of the "chaincode" instantiation
• [transfer] function transfer the specified number of tokens from one user to another
• [balanceOf] returns the number of tokens owned by the specified user

Install

Install the chaincode on the Acme Peer-1 . set-env.sh acme set-chain-env.sh -n erc20 -v 1.0 -p token/ERC20 chain.sh install -p

Instantiate

Instantiate the chaincode

set-chain-env.sh -c '{"Args":["init","ACFT","1000", "Aditya Test Token!!!","john"]}' chain.sh instantiate

Query

Query the balance for 'john' set-chain-env.sh -q '{"Args":["balanceOf","john"]}' chain.sh query

Invoke

Transfer 100 tokens from 'john' to 'sam' set-chain-env.sh -i '{"Args":["transfer", "john", "sam", "10"]}' chain.sh invoke

Query

Check the balance for 'john' & 'sam' set-chain-env.sh -q '{"Args":["balanceOf","john"]}' chain.sh query set-chain-env.sh -q '{"Args":["balanceOf","sam"]}' chain.sh query

============== Events Testing

Launch the events utility events.sh -t chaincode -n erc20 -e transfer -c airlinechannel

In a <<Terminal #2> execute the invoke - observe transfer events in terminal 1 set-chain-env.sh -i '{"Args":["transfer", "john", "sam", "10"]}' chain.sh invoke

Node version

https://github.com/grepruby/ERC20-Token-On-Hyperledger