yihuang

# Poker Design Notes

## 合约框架

### CheckIn

- 创建牌桌，初始化参数
- 玩家加入，锁定资产
- 玩家提交公钥和DLOG证明，客户端合并玩家公钥可得全局公钥

yihuang

contract ERC20 {
  map[address][uint256] _balances;

  // deposit through native module
  // native module will first move user's native tokens to contract address,
  // then mint on evm directly
  function deposit(receipient, amount) {
    require(msg.sender == native_module_address)
    _balances[receipient] += amount;
  }

yihuang

// Sources flattened with hardhat v2.4.3 https://hardhat.org

// File @openzeppelin/contracts/token/ERC20/[email protected]

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.

yihuang

native asset design patterns

Fixed max supply

Problem

You want your token to have fixed max supply (NFT is just token with 1 max supply).

Solution

yihuang

[package]
name = "async-benchmark"
version = "0.1.0"
authors = ["yihuang <[email protected]>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

yihuang

Over Simplfied Asymmetric Cryptography

Group

Definitions:

• Operator: +

• Unit: 0

yihuang

import json
import sys

if len(sys.argv) < 3:
    print(
        """add_genesis_accounts.py accounts.json path/to/genesis.json

        new genesis file is print to stdout
        """,
        file=sys.stderr,

yihuang

import base64
import json

# import hashlib
import sys

import bech32


def clear_staking(genesis):

yihuang

nix introduction

nix-env: the package manager

$ nix-env -i hello
installing 'hello-2.10'
these paths will be fetched (0.02 MiB download, 0.07 MiB unpacked):
  /nix/store/mmlnjqg7gbr4w7xjlwj614z97kk1rvfv-hello-2.10
copying path '/nix/store/mmlnjqg7gbr4w7xjlwj614z97kk1rvfv-hello-2.10' from 'https://cache.nixos.org'...

yihuang

[package]
name = "test-rust"
version = "0.1.0"
authors = ["yihuang <[email protected]>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]