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https://github.com/datachainlab/hypermint
Tendermint-based blockchain that supports WebAssembly smart contract
https://github.com/datachainlab/hypermint
blockchain smart-contracts tendermint wasm webassembly
Last synced: 3 months ago
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Tendermint-based blockchain that supports WebAssembly smart contract
- Host: GitHub
- URL: https://github.com/datachainlab/hypermint
- Owner: datachainlab
- License: other
- Created: 2018-10-13T03:09:23.000Z (over 6 years ago)
- Default Branch: develop
- Last Pushed: 2020-03-16T05:13:27.000Z (almost 5 years ago)
- Last Synced: 2024-06-20T01:58:55.822Z (8 months ago)
- Topics: blockchain, smart-contracts, tendermint, wasm, webassembly
- Language: Go
- Homepage:
- Size: 498 KB
- Stars: 56
- Watchers: 5
- Forks: 6
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# hypermint
[](https://circleci.com/gh/bluele/hypermint)
hypermint is a Tendermint-based blockchain that support WebAssembly smart contract.
## Features
- Tendermint consensus
- WebAssembly smart contract
- Transaction supports [Read-Write set semantics](https://hyperledger-fabric.readthedocs.io/en/release-1.4/readwrite.html)
## Build
```
$ make build
```
If you use Golang 1.12 or 1.11, export `GO111MODULE=on` for modules.
## Getting started
### Run a validator node
First, you need to initialize genesis state.
```
# these outputs will be different per execution
$ make init
{
"chain_id": "test-chain-6AHEow",
"node_id": "67b4f60a2b371a908848af2d35e7816b55610115",
"app_message": "success"
}
export ADDR1=0x1221a0726d56aEdeA9dBe2522DdAE3Dd8ED0f36c
export ADDR2=0xD8eba1f372b9e0D378259F150d52C2e6C2e4109a
```
Next, run a blockchain node:
```
$ make start
```
If you want to deploy hypermint node on k8s, see [here](https://github.com/bluele/hypermint/tree/develop/k8s/testnet).
### Smart contract
hypermint supports wasm based smart contract.
Contract example project is [here](https://github.com/bluele/hypermint/tree/develop/example).
*If you don't have cargo and wasm-gc, you should install these.*
- https://doc.rust-lang.org/cargo/getting-started/installation.html
- https://github.com/alexcrichton/wasm-gc
To deploy [simple token project](https://github.com/bluele/hypermint/tree/develop/example/token), exec below commands:
```
# '0x1221a0726d56aEdeA9dBe2522DdAE3Dd8ED0f36c' should be replace with the value which was got by `make init`
$ export ADDR1=0x1221a0726d56aEdeA9dBe2522DdAE3Dd8ED0f36c
# To exec deploy cmd, cargo with wasm32 and wasm-gc
$ make -C ./example/token deploy
cargo build --target=wasm32-unknown-unknown
Compiling hmc v0.1.0 (/Users/jun/go/src/github.com/bluele/hypermint/hmc)
Compiling token v0.1.0 (/Users/jun/go/src/github.com/bluele/hypermint/example/token)
Finished dev [unoptimized + debuginfo] target(s) in 2.08s
wasm-gc ./target/wasm32-unknown-unknown/debug/token.wasm -o ./token.min.wasm
contract address is 0xceD4629963CCc0549094e962a01f454EBFD80Cbd
```
Now you got the first contract address!
Next, try to check your balance.
```
$ ./build/hmcli contract call --address=$ADDR1 --contract=0xceD4629963CCc0549094e962a01f454EBFD80Cbd --func="get_balance" --type=int --password=password --simulate --gas=1
10000
```
## Contract development
We develop an emulation library to ease contract development and testing.
https://github.com/bluele/hmemu
Please check this out.
## Maintainers
- [Jun Kimura](https://github.com/bluele)