如何创建本地USDT测试网？

Question

我想要创建一个本地测试网，可以在钱包之间移动USDT (测试硬币)。

我设法在Docker中创建了一个ETH测试网。在下面的docker-compose.yml中，# ETH testnet setup (start)和# ETH testnet setup (end)之间的线对此负责。

version: '3'

services:
#
# BTC testnet setup (start)
#
  node:
    image: ulamlabs/bitcoind-custom-regtest:latest
  electrumx:
    image: lukechilds/electrumx:latest
    links:
      - node
    ports:
      - "51001:50001"
      - "51002:50002"
    environment:
      - NET=regtest
      - COIN=BitcoinSegwit
      - DAEMON_URL=http://test:test@node:19001
  explorer:
    image: ulamlabs/btc-rpc-explorer:latest
    links:
      - node
      - electrumx
    ports:
      - "3002:3002"
    environment:
      - BTCEXP_HOST=0.0.0.0
      - BTCEXP_BITCOIND_URI=http://test:test@node:19001
      - BTCEXP_ELECTRUMX_SERVERS=tls://electrumx:50002
      - BTCEXP_ADDRESS_API=electrumx
#
# BTC testnet setup (end)
#


#
# ETH testnet setup (start)
#
  geth:
    image: ulamlabs/geth-poa-testnet:latest
    environment:
      - ETH_PASSWORD=QfdxTYxkwASj
      - ETH_PRIVATE_KEY=0d0b4c455973c883bb0fa584f0078178aa90c571a8f1d40f28d2339f4e757dde
      - ETH_ADDRESS=0c56352F05De44C9b5BA8bcF9BDEc7e654993339
    ports:
      - 8178:8178
      - 8546:8546
    volumes:
      - ./genesis.json:/app/genesis.json

  postgres:
    image: postgres:12
    command: postgres -c 'max_connections=500'
    environment:
      - POSTGRES_HOST_AUTH_METHOD=trust

  blockscout:
    image: ulamlabs/blockscout:latest
    links:
      - geth
      - postgres
    ports:
      - 4000:4000
    environment:
      - DATABASE_URL=postgresql://postgres:@postgres:5432/postgres?ssl=false
      - ETHEREUM_JSONRPC_VARIANT=geth
      - ETHEREUM_JSONRPC_HTTP_URL=http://geth:8178
      - ETHEREUM_JSONRPC_WS_URL=ws://geth:8546
      - MIX_ENV=prod
      - BLOCKSCOUT_HOST=localhost
      - COIN=eth
      - NETWORK=POA
      - SUBNETWORK=Local Testnet

#
# ETH testnet setup (end)
#

文件./genesis.json:/app/genesis.json包含以下内容：

{
    "config": {
        "chainId": 5555,
        "clique": {
            "period": 60,
            "epoch": 30000
        },
        "homesteadBlock": 0,
        "eip150Block": 0,
        "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "eip155Block": 0,
        "eip158Block": 0,
        "byzantiumBlock": 0,
        "constantinopleBlock": 0,
        "petersburgBlock": 0,
        "istanbulBlock": 0,
        "muirGlacierBlock": 0
    },
    "extraData": "0x00000000000000000000000000000000000000000000000000000000000000000c56352F05De44C9b5BA8bcF9BDEc7e6549933390000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "alloc": {
        "411167FeFecAD12Da17F9063143706C39528aa28": {
            "balance": "0x200000000000000000000000000000000000000000000000000000000000000"
        }
    },
    "nonce": "0x0",
    "timestamp": "0x5eaa7b09",
    "gasLimit": "0x47b760",
    "difficulty": "0x1",
    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "coinbase": "0x0000000000000000000000000000000000000000",
    "number": "0x0",
    "gasUsed": "0x0",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
}

据我所知，

• 在这个测试网中没有任何USDT测试硬币被开采
• 为了获得USDT测试硬币，我需要向ETH (geth)测试网添加ERC20支持。

如何修改上述docker-compose.yml和/或genesis.json文件，以便将ETH 20/USDT支持添加到ETH？

Answer 1

我会尽我所能尽我所能回答问题，虽然我对这个问题并不十分清楚。

Eth传输

账户之间的以太转移是由区块链处理的。这样做不需要部署任何智能契约。

ERC-20传输

USDT和其他ERC-20令牌在区块链上本机不存在。每个ERC-20令牌都是某个人部署的智能契约。例如，这是USDT合同地址。您还可以阅读USDT合同代码这里。

USDT在测试网

上的应用

要回答您的问题，您可以在testnet上测试USDT，方法是在该测试网上部署USDT合同的确切副本(上面链接)，然后调用一些函数，比如智能契约上的transfer()。

请注意，您不需要创建自己的testnet。您可以使用公共测试网(如Ropsten、Kovan、Rinkeby等)，也可以使用类似ganache-cli的工具来执行的本地分支。对于后者，USDT合同已经部署好了，您可以在您的本地分支上测试它。加纳奇还允许您非常容易地创建本地测试网。