Uniswap deployment instructions

This page contains a blow by blow example of how to initialize, deploy and then interact with the Uniswap Smart Contracts. All work will be performed in the web3 console. At the end of this tutorial example we will be performing the necessary Uniswap Frontend configuration. The outcome being your own complete Uniswap exchange application like the official Uniswap Exchange.

Backend (smart contracts)

The original Solidity Smart Contracts are out of date. Therefore we will be using the current Vyper Smart Contracts during this tutorial example.

Housekeeping

Let's create some new accounts for demonstration purposes.

personal.newAccount()
"0x3c01e0f0053173c6f91f02a185b88e96afa24c65"
personal.newAccount()
"0x191148774961c172f187957e3cd9cf7bbc0b4abf"

Let's assign some meaningful names to those new accounts

factoryOwner = "0x3c01e0f0053173c6f91f02a185b88e96afa24c65"
tokenOwner = "0x0dbc262775545bf477efdcc6d9031850113c9e80"

Factory

The first step in creating a Uniswap Exchange instance is to initialize the Uniswap Factory Smart Contract. We will need to get the Factory ABI and Bytecode, which we then paste into the web3 console like this. Note that we surround the bytecode below with double quotes!

uniswapFactoryAbi = [{"name": "NewExchange", "inputs": [{"type": "address", "name": "token", "indexed": true}, {"type": "address", "name": "exchange", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "initializeFactory", "outputs": [], "inputs": [{"type": "address", "name": "template"}], "constant": false, "payable": false, "type": "function", "gas": 35725}, {"name": "createExchange", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "address", "name": "token"}], "constant": false, "payable": false, "type": "function", "gas": 187911}, {"name": "getExchange", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "address", "name": "token"}], "constant": true, "payable": false, "type": "function", "gas": 715}, {"name": "getToken", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "address", "name": "exchange"}], "constant": true, "payable": false, "type": "function", "gas": 745}, {"name": "getTokenWithId", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "uint256", "name": "token_id"}], "constant": true, "payable": false, "type": "function", "gas": 736}, {"name": "exchangeTemplate", "outputs": [{"type": "address", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 633}, {"name": "tokenCount", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 663}]

uniswapFactoryBytecode = "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"

From here we can go ahead and create a variable for the Uniswap Factory Smart Contract.

var uniswapFactoryContract = web3.cmt.contract(uniswapFactoryAbi, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

We can calculate the required gas using the following commands

var factoryContractData = uniswapFactoryContract.new.getData({from:factoryOwner, data: uniswapFactoryBytecode})

var factoryEstimate = web3.cmt.estimateGas({data: factoryContractData})
//313076

Please note that if the function calls ever fail from insufficient gas you can just bump it up a bit like this ...

//Multiplication
{from:factoryOwner, data: uniswapFactoryBytecode, gas: factoryEstimate * x}
//Addition
{from:factoryOwner, data: uniswapFactoryBytecode, gas: factoryEstimate + x}
//Where x is a number you have chosen to multiply or add by

This is better than just guessing.

Then lastly deploy the Uniswap Factory Contract on the blockchain

var deployedUniswapFactoryContract = uniswapFactoryContract.new({from:factoryOwner, data: uniswapFactoryBytecode, gas: factoryEstimate}, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

To retrieve the Uniswap Factory Contract's address use the following command

deployedUniswapFactoryContract.address
"0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba"

Exchange

We will need to get the Exchange ABI and Bytecode and then deploy a one-off Exchange template.

uniswapExchangeAbi = [{"name": "TokenPurchase", "inputs": [{"type": "address", "name": "buyer", "indexed": true}, {"type": "uint256", "name": "eth_sold", "indexed": true}, {"type": "uint256", "name": "tokens_bought", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "EthPurchase", "inputs": [{"type": "address", "name": "buyer", "indexed": true}, {"type": "uint256", "name": "tokens_sold", "indexed": true}, {"type": "uint256", "name": "eth_bought", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "AddLiquidity", "inputs": [{"type": "address", "name": "provider", "indexed": true}, {"type": "uint256", "name": "eth_amount", "indexed": true}, {"type": "uint256", "name": "token_amount", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "RemoveLiquidity", "inputs": [{"type": "address", "name": "provider", "indexed": true}, {"type": "uint256", "name": "eth_amount", "indexed": true}, {"type": "uint256", "name": "token_amount", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "Transfer", "inputs": [{"type": "address", "name": "_from", "indexed": true}, {"type": "address", "name": "_to", "indexed": true}, {"type": "uint256", "name": "_value", "indexed": false}], "anonymous": false, "type": "event"}, {"name": "Approval", "inputs": [{"type": "address", "name": "_owner", "indexed": true}, {"type": "address", "name": "_spender", "indexed": true}, {"type": "uint256", "name": "_value", "indexed": false}], "anonymous": false, "type": "event"}, {"name": "setup", "outputs": [], "inputs": [{"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 175875}, {"name": "addLiquidity", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "min_liquidity"}, {"type": "uint256", "name": "max_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": true, "type": "function", "gas": 82616}, {"name": "removeLiquidity", "outputs": [{"type": "uint256", "name": "out"}, {"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "amount"}, {"type": "uint256", "name": "min_eth"}, {"type": "uint256", "name": "min_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": false, "type": "function", "gas": 116814}, {"name": "__default__", "outputs": [], "inputs": [], "constant": false, "payable": true, "type": "function"}, {"name": "ethToTokenSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "min_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": true, "type": "function", "gas": 12757}, {"name": "ethToTokenTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "min_tokens"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": true, "type": "function", "gas": 12965}, {"name": "ethToTokenSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": true, "type": "function", "gas": 50463}, {"name": "ethToTokenTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": true, "type": "function", "gas": 50671}, {"name": "tokenToEthSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_eth"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": false, "type": "function", "gas": 47503}, {"name": "tokenToEthTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_eth"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": false, "type": "function", "gas": 47712}, {"name": "tokenToEthSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_bought"}, {"type": "uint256", "name": "max_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": false, "type": "function", "gas": 50175}, {"name": "tokenToEthTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_bought"}, {"type": "uint256", "name": "max_tokens"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": false, "type": "function", "gas": 50384}, {"name": "tokenToTokenSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 51007}, {"name": "tokenToTokenTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 51098}, {"name": "tokenToTokenSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 54928}, {"name": "tokenToTokenTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 55019}, {"name": "tokenToExchangeSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 49342}, {"name": "tokenToExchangeTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 49532}, {"name": "tokenToExchangeSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 53233}, {"name": "tokenToExchangeTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 53423}, {"name": "getEthToTokenInputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_sold"}], "constant": true, "payable": false, "type": "function", "gas": 5542}, {"name": "getEthToTokenOutputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}], "constant": true, "payable": false, "type": "function", "gas": 6872}, {"name": "getTokenToEthInputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}], "constant": true, "payable": false, "type": "function", "gas": 5637}, {"name": "getTokenToEthOutputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_bought"}], "constant": true, "payable": false, "type": "function", "gas": 6897}, {"name": "tokenAddress", "outputs": [{"type": "address", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1413}, {"name": "factoryAddress", "outputs": [{"type": "address", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1443}, {"name": "balanceOf", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "address", "name": "_owner"}], "constant": true, "payable": false, "type": "function", "gas": 1645}, {"name": "transfer", "outputs": [{"type": "bool", "name": "out"}], "inputs": [{"type": "address", "name": "_to"}, {"type": "uint256", "name": "_value"}], "constant": false, "payable": false, "type": "function", "gas": 75034}, {"name": "transferFrom", "outputs": [{"type": "bool", "name": "out"}], "inputs": [{"type": "address", "name": "_from"}, {"type": "address", "name": "_to"}, {"type": "uint256", "name": "_value"}], "constant": false, "payable": false, "type": "function", "gas": 110907}, {"name": "approve", "outputs": [{"type": "bool", "name": "out"}], "inputs": [{"type": "address", "name": "_spender"}, {"type": "uint256", "name": "_value"}], "constant": false, "payable": false, "type": "function", "gas": 38769}, {"name": "allowance", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "address", "name": "_owner"}, {"type": "address", "name": "_spender"}], "constant": true, "payable": false, "type": "function", "gas": 1925}, {"name": "name", "outputs": [{"type": "bytes32", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1623}, {"name": "symbol", "outputs": [{"type": "bytes32", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1653}, {"name": "decimals", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1683}, {"name": "totalSupply", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1713}]

uniswapExchangeBytecode = 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We can now create a variable for the Uniswap Exchange template

var uniswapExchangeTemplate = web3.cmt.contract(uniswapExchangeAbi,function(error, result){if(!error){console.log(result)}else{console.log(error)}});

We can calculate the required gas using the following commands

var exchangeContractData = uniswapExchangeTemplate.new.getData({from:factoryOwner, data: uniswapExchangeBytecode})

var exchangeEstimate = web3.cmt.estimateGas({data: exchangeContractData})
//3340999

Then finally we can deploy the Uniswap Exchange template

var deployedUniswapExchangeTemplate = uniswapExchangeTemplate.new({from:factoryOwner, data: uniswapExchangeBytecode, gas: exchangeEstimate}, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

We can obtain the address of this Uniswap Exchange template contract using the following command

deployedUniswapExchangeTemplate.address
"0xf02ce53600badb397215b3ab799c76f5626994cf"

At this point we have a Factory contract and an Exchange template contract deployed. We have accomplished the first steps of what is essentially the static scaffolding of the Uniswap exchange instance. Next we are going to initialize the Factory contract and, in doing so, pass in the Exchange template which will result in these two deployed contracts being linked; related. Before we go ahead and relate these two contract instances lets prove that at present the contracts do not know anything about each other.

deployedUniswapFactoryContract.exchangeTemplate()
"0x0000000000000000000000000000000000000000"

deployedUniswapExchangeTemplate.factoryAddress()
"0x0000000000000000000000000000000000000000"

As you can see above, if we request the Factory's exchange template or request the exchange template's factory address we simply get back no results. This is correct for this stage of the procedure.

Let's now go ahead and initialize the Uniswap Factory contract by passing in the Uniswap Exchange template contract address as we previously mentioned.

We can estimate the gas required like this

var factory_initializeFactoryEstimate = deployedUniswapFactoryContract.initializeFactory.estimateGas(deployedUniswapExchangeTemplate.address, {from: factoryOwner})

deployedUniswapFactoryContract.initializeFactory(deployedUniswapExchangeTemplate.address, {from:factoryOwner, gas: factory_initializeFactoryEstimate})

At this stage we are able to request the Factory's exchange template using the following command

deployedUniswapFactoryContract.exchangeTemplate()
"0xf02ce53600badb397215b3ab799c76f5626994cf"

Interestingly though, we can not yet get the exchange template's factory address.

deployedUniswapExchangeTemplate.factoryAddress()
"0x0000000000000000000000000000000000000000"

It is important that you understand the concept of the singular Exchange contract "template" vs the potentially numerous instances of the Exchange contract. It is important to remember that there will only be one Factory and one Exchange "template" per Uniswap application. On the other hand there are of course going to be many many instances of the Exchanges. Each of which will have their own token pair.

Creating a new token for the new exchange

Firstly we will take a look at the YUAN token

crc20Abi = [ { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "approve", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_subtractedValue", "type": "uint256" } ], "name": "decreaseApproval", "outputs": [ { "name": "success", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_addedValue", "type": "uint256" } ], "name": "increaseApproval", "outputs": [ { "name": "success", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "pause", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "renounceOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_contractAddress", "type": "address" }, { "name": "_tokenAmount", "type": "uint256" } ], "name": "setCrowdFunding", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_document", "type": "string" } ], "name": "setDocument", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_logo", "type": "string" } ], "name": "setLogo", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_property", "type": "string" } ], "name": "setProperty", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_webSite", "type": "string" } ], "name": "setWebsite", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_from", "type": "address" }, { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "unpause", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_logo", "type": "string" }, { "name": "_webSite", "type": "string" }, { "name": "_links", "type": "string" }, { "name": "_rights", "type": "string" }, { "name": "_description", "type": "string" } ], "name": "updateProfile", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "inputs": [ { "name": "_name", "type": "string" }, { "name": "_symbol", "type": "string" }, { "name": "_decimals", "type": "uint8" }, { "name": "_supply", "type": "uint256" }, { "name": "_freezenAmount", "type": "uint256" }, { "name": "_freezenTime", "type": "uint256" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "tokenName", "type": "string" }, { "indexed": false, "name": "logo", "type": "string" }, { "indexed": false, "name": "webSite", "type": "string" }, { "indexed": false, "name": "links", "type": "string" }, { "indexed": false, "name": "rights", "type": "string" }, { "indexed": false, "name": "description", "type": "string" } ], "name": "ProfileHistory", "type": "event" }, { "anonymous": false, "inputs": [], "name": "Pause", "type": "event" }, { "anonymous": false, "inputs": [], "name": "Unpause", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "previousOwner", "type": "address" } ], "name": "OwnershipRenounced", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "previousOwner", "type": "address" }, { "indexed": true, "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "owner", "type": "address" }, { "indexed": true, "name": "spender", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "from", "type": "address" }, { "indexed": true, "name": "to", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" }, { "name": "_spender", "type": "address" } ], "name": "allowance", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "crowdFunding", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "decimals", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "description", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "document", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "founder", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "freezenAmount", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "freezenTime", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "INITIAL_SUPPLY", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_founder", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "isFounderFreezen", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "issueDate", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "links", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "logo", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "name", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "paused", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "property", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "rights", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "symbol", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "totalSupply", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "version", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "website", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }]

crc20Bytecode = 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Let's create a variable for the new CRC20 smart contract token

var newCRC20SmartTokenContract = web3.cmt.contract(crc20Abi, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

Let's calculate the gas required to initialize this contract

var crc20Estimate = web3.cmt.estimateGas({data: crc20Bytecode})
//3559364

Then finally we can go ahead and deploy the contract

var deployedYuanToken = newCRC20SmartTokenContract.new("The YUAN Token","YUAN","18", "1000000000000000000000000", "0", "0", {from:tokenOwner, data: crc20Bytecode, gas: crc20Estimate}, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var yuanVar = web3.cmt.contract(crc20Abi,function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var deployedYuanToken = yuanVar.at("0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe")

deployedYuanToken.totalSupply()
1e+24

Let's also create a TIM contract

var deployedTimToken = newCRC20SmartTokenContract.new("The TIM Token","TIM","18", "1000000000000000000000000", "0", "0", {from:tokenOwner, data: crc20Bytecode, gas: crc20Estimate}, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

deployedTimToken.address
//"0x0aafb9299daafc32a051086e92847fab1ef85b50"

var timVar = web3.cmt.contract(crc20Abi,function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var deployedTimToken = timVar.at("0x0aafb9299daafc32a051086e92847fab1ef85b50")

web3.fromWei(deployedTimToken.totalSupply(), 'cmt')
1000000

Let's go ahead and create one of these Exchange instances and then demonstrate how to call its factoryAddress().

Creating an Exchange for the token

We are going to call the Factory contract's createExchange function which will produce a new instance of an Exchange and return the newly minted address for the Exchange instance. Note that we are passing in the address to an existing ERC20 token. This is the token contract which will be traded against the network token once the exchange is created. Obviously you will need to have the address of an ERC20 token to perform this function.

Before we run the createExchange function, let's perform a few simple tests to ensure correct execution.

assert token != ZERO_ADDRESS

> deployedYuanTokenInstance.address
"0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe" //Check ✓

assert self.exchangeTemplate != ZERO_ADDRESS

> deployedUniswapFactoryContract.exchangeTemplate()
"0xb2864c1e9d81e733f2cb045e2b2b6595be2cd0ad" //Check ✓

assert self.token_to_exchange[token] == ZERO_ADDRESS

> deployedUniswapFactoryContract.getExchange(deployedYuanTokenInstance.address)
"0x0000000000000000000000000000000000000000" //Check ✓

Estimating the gas for the createExchange function

var factory_createExchangeEstimate = deployedUniswapFactoryContract.createExchange.estimateGas("0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe", {from:factoryOwner})
// 250727

Running the createExchange function for the Yuan token

deployedUniswapFactoryContract.createExchange("0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe", {from:factoryOwner, gas: factory_createExchangeEstimate})

Running the createExchange function for the Tim token

deployedUniswapFactoryContract.createExchange(deployedTimToken.address, {from:factoryOwner, gas: factory_createExchangeEstimate})

We promised a little while back that when an exchange instance (for a specific token) was created we would be able to query its Factory and many other details. Let's go ahead and run some commands to ensure that the Factory, Exchange Template and the new Exchange instance are all wired together as intended.

We can call the exchange of the YUAN token

deployedUniswapFactoryContract.getExchange("0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe")
"0xaf1a51fdca46190e7703b6cf97470efc92ec6498"

We can also call the YUAN Exchange's factory address and Token address which will of course match our single factory address and the address of the YUAN token.

var uniswapExchangeTemplate = web3.cmt.contract(uniswapExchangeAbi,function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var yuanExchangeInstance = uniswapExchangeTemplate.at(deployedUniswapFactoryContract.getExchange("0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"))

> yuanExchangeInstance.factoryAddress()
"0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba"
> yuanExchangeInstance.tokenAddress()
"0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"

We can now also ask the factory contract to provide us with the exchange address by passing in the token as an argument

deployedUniswapFactoryContract.getExchange("0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe")
"0xaf1a51fdca46190e7703b6cf97470efc92ec6498"

Or we can ask the factory contract to provide us with the token address by passing in the exchange contract address as an argument

> deployedUniswapFactoryContract.getToken("0xaf1a51fdca46190e7703b6cf97470efc92ec6498")
"0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"

Adding liquidity to an exchange

Now that we have a factory contract, an exchange template contract and an instance of the exchange contract for the YUAN token, we can go ahead and fund the exchange by providing the first round of liquidity.

Now we have to approve the yuanExchangeInstance by setting its allowance to spend the deployedYuanToken whilst performing its exchange/swapping duties. We do this by executing the deployedYuanToken's approve function (passing in the yuanExchangeInstance and amount as arguments).

First let us calculate how much gas the approve function requires.

var deployedYuanToken_approveEstimate = deployedYuanToken.approve.estimateGas(deployedUniswapFactoryContract.getExchange(deployedYuanToken.address), 1000000, {from: tokenOwner})

Then finally call the approve method of the CRC20 deployedYuanToken using the gas which we calculated

deployedYuanToken.approve(deployedUniswapFactoryContract.getExchange(deployedYuanToken.address), web3.toWei(1000000, 'cmt'), {from: tokenOwner, gas: deployedYuanToken_approveEstimate})

We can now double check that the tokenOwner has provided the deployedYuanToken with the appropriate allowance to interacti with the yuanExchangeInstance

 deployedYuanToken.allowance(tokenOwner, deployedUniswapFactoryContract.getExchange(deployedYuanToken.address))

Let's just quickly check the accounts and see how many CMT and YUAN the tokenOwner is holding. It will be handy to check these balances again after the liquidity has been added to Uniswap

web3.fromWei(cmt.getBalance(tokenOwner))
//6009.4883578690073177

web3.fromWei(deployedYuanToken.balanceOf(tokenOwner), 'cmt')
//1000000

We will now call upon the yuanExchangeInstance and execute the fuction which provides liquidity

// Set the variables which hold amounts
// The amount of YUAN tokens to deposit when adding liquidity - currently set to two hundred thousand
var amountOfYuanTokensToDeposit = web3.toWei(200000, 'cmt')

// The amount of CMT tokens to deposit when adding liquidity - currently set to five thousand 
var amountOfCMTToDeposit = web3.toWei(2000, 'cmt')

// Add the liquidity
yuanExchangeInstance.addLiquidity.sendTransaction(0, amountOfYuanTokensToDeposit, 1642075763,{ from:tokenOwner, value: amountOfCMTToDeposit, gas: "400000"},function (error, result){ if(!error){ console.log(result); } else{ console.log(error); } });

Restoring web3 variables in a new session

The following commands will quickly restore the web3 variables in the event that a new web3 session was started. You will notice that we are using the contract addresses from the above example. Obviously you would have to replace the addresses in the following commands with the actual contract and account addresses on your system.

factoryOwner = "0x3c01e0f0053173c6f91f02a185b88e96afa24c65"
tokenOwner = "0x0dbc262775545bf477efdcc6d9031850113c9e80"

uniswapExchangeAbi = [{"name": "TokenPurchase", "inputs": [{"type": "address", "name": "buyer", "indexed": true}, {"type": "uint256", "name": "eth_sold", "indexed": true}, {"type": "uint256", "name": "tokens_bought", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "EthPurchase", "inputs": [{"type": "address", "name": "buyer", "indexed": true}, {"type": "uint256", "name": "tokens_sold", "indexed": true}, {"type": "uint256", "name": "eth_bought", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "AddLiquidity", "inputs": [{"type": "address", "name": "provider", "indexed": true}, {"type": "uint256", "name": "eth_amount", "indexed": true}, {"type": "uint256", "name": "token_amount", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "RemoveLiquidity", "inputs": [{"type": "address", "name": "provider", "indexed": true}, {"type": "uint256", "name": "eth_amount", "indexed": true}, {"type": "uint256", "name": "token_amount", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "Transfer", "inputs": [{"type": "address", "name": "_from", "indexed": true}, {"type": "address", "name": "_to", "indexed": true}, {"type": "uint256", "name": "_value", "indexed": false}], "anonymous": false, "type": "event"}, {"name": "Approval", "inputs": [{"type": "address", "name": "_owner", "indexed": true}, {"type": "address", "name": "_spender", "indexed": true}, {"type": "uint256", "name": "_value", "indexed": false}], "anonymous": false, "type": "event"}, {"name": "setup", "outputs": [], "inputs": [{"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 175875}, {"name": "addLiquidity", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "min_liquidity"}, {"type": "uint256", "name": "max_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": true, "type": "function", "gas": 82616}, {"name": "removeLiquidity", "outputs": [{"type": "uint256", "name": "out"}, {"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "amount"}, {"type": "uint256", "name": "min_eth"}, {"type": "uint256", "name": "min_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": false, "type": "function", "gas": 116814}, {"name": "__default__", "outputs": [], "inputs": [], "constant": false, "payable": true, "type": "function"}, {"name": "ethToTokenSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "min_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": true, "type": "function", "gas": 12757}, {"name": "ethToTokenTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "min_tokens"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": true, "type": "function", "gas": 12965}, {"name": "ethToTokenSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": true, "type": "function", "gas": 50463}, {"name": "ethToTokenTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": true, "type": "function", "gas": 50671}, {"name": "tokenToEthSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_eth"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": false, "type": "function", "gas": 47503}, {"name": "tokenToEthTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_eth"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": false, "type": "function", "gas": 47712}, {"name": "tokenToEthSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_bought"}, {"type": "uint256", "name": "max_tokens"}, {"type": "uint256", "name": "deadline"}], "constant": false, "payable": false, "type": "function", "gas": 50175}, {"name": "tokenToEthTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_bought"}, {"type": "uint256", "name": "max_tokens"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}], "constant": false, "payable": false, "type": "function", "gas": 50384}, {"name": "tokenToTokenSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 51007}, {"name": "tokenToTokenTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 51098}, {"name": "tokenToTokenSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 54928}, {"name": "tokenToTokenTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "token_addr"}], "constant": false, "payable": false, "type": "function", "gas": 55019}, {"name": "tokenToExchangeSwapInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 49342}, {"name": "tokenToExchangeTransferInput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}, {"type": "uint256", "name": "min_tokens_bought"}, {"type": "uint256", "name": "min_eth_bought"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 49532}, {"name": "tokenToExchangeSwapOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 53233}, {"name": "tokenToExchangeTransferOutput", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}, {"type": "uint256", "name": "max_tokens_sold"}, {"type": "uint256", "name": "max_eth_sold"}, {"type": "uint256", "name": "deadline"}, {"type": "address", "name": "recipient"}, {"type": "address", "name": "exchange_addr"}], "constant": false, "payable": false, "type": "function", "gas": 53423}, {"name": "getEthToTokenInputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_sold"}], "constant": true, "payable": false, "type": "function", "gas": 5542}, {"name": "getEthToTokenOutputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_bought"}], "constant": true, "payable": false, "type": "function", "gas": 6872}, {"name": "getTokenToEthInputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "tokens_sold"}], "constant": true, "payable": false, "type": "function", "gas": 5637}, {"name": "getTokenToEthOutputPrice", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "uint256", "name": "eth_bought"}], "constant": true, "payable": false, "type": "function", "gas": 6897}, {"name": "tokenAddress", "outputs": [{"type": "address", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1413}, {"name": "factoryAddress", "outputs": [{"type": "address", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1443}, {"name": "balanceOf", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "address", "name": "_owner"}], "constant": true, "payable": false, "type": "function", "gas": 1645}, {"name": "transfer", "outputs": [{"type": "bool", "name": "out"}], "inputs": [{"type": "address", "name": "_to"}, {"type": "uint256", "name": "_value"}], "constant": false, "payable": false, "type": "function", "gas": 75034}, {"name": "transferFrom", "outputs": [{"type": "bool", "name": "out"}], "inputs": [{"type": "address", "name": "_from"}, {"type": "address", "name": "_to"}, {"type": "uint256", "name": "_value"}], "constant": false, "payable": false, "type": "function", "gas": 110907}, {"name": "approve", "outputs": [{"type": "bool", "name": "out"}], "inputs": [{"type": "address", "name": "_spender"}, {"type": "uint256", "name": "_value"}], "constant": false, "payable": false, "type": "function", "gas": 38769}, {"name": "allowance", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [{"type": "address", "name": "_owner"}, {"type": "address", "name": "_spender"}], "constant": true, "payable": false, "type": "function", "gas": 1925}, {"name": "name", "outputs": [{"type": "bytes32", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1623}, {"name": "symbol", "outputs": [{"type": "bytes32", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1653}, {"name": "decimals", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1683}, {"name": "totalSupply", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 1713}]

var uniswapExchangeTemplate = web3.cmt.contract(uniswapExchangeAbi,function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var deployedUniswapExchangeTemplate = uniswapExchangeTemplate.at("0xf02ce53600badb397215b3ab799c76f5626994cf")

uniswapFactoryAbi = [{"name": "NewExchange", "inputs": [{"type": "address", "name": "token", "indexed": true}, {"type": "address", "name": "exchange", "indexed": true}], "anonymous": false, "type": "event"}, {"name": "initializeFactory", "outputs": [], "inputs": [{"type": "address", "name": "template"}], "constant": false, "payable": false, "type": "function", "gas": 35725}, {"name": "createExchange", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "address", "name": "token"}], "constant": false, "payable": false, "type": "function", "gas": 187911}, {"name": "getExchange", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "address", "name": "token"}], "constant": true, "payable": false, "type": "function", "gas": 715}, {"name": "getToken", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "address", "name": "exchange"}], "constant": true, "payable": false, "type": "function", "gas": 745}, {"name": "getTokenWithId", "outputs": [{"type": "address", "name": "out"}], "inputs": [{"type": "uint256", "name": "token_id"}], "constant": true, "payable": false, "type": "function", "gas": 736}, {"name": "exchangeTemplate", "outputs": [{"type": "address", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 633}, {"name": "tokenCount", "outputs": [{"type": "uint256", "name": "out"}], "inputs": [], "constant": true, "payable": false, "type": "function", "gas": 663}]

var uniswapFactoryContract = web3.cmt.contract(uniswapFactoryAbi, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var deployedUniswapFactoryContract = uniswapFactoryContract.at("0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba")

var uniswapExchangeTemplate = web3.cmt.contract(uniswapExchangeAbi,function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var yuanExchangeInstance = uniswapExchangeTemplate.at("0xaf1a51fdca46190e7703b6cf97470efc92ec6498")

var timExchangeInstance = uniswapExchangeTemplate.at(deployedUniswapFactoryContract.getExchange("0x0aafb9299daafc32a051086e92847fab1ef85b50"))

Tokens

crc20Abi = [ { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "approve", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_subtractedValue", "type": "uint256" } ], "name": "decreaseApproval", "outputs": [ { "name": "success", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_spender", "type": "address" }, { "name": "_addedValue", "type": "uint256" } ], "name": "increaseApproval", "outputs": [ { "name": "success", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "pause", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "renounceOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_contractAddress", "type": "address" }, { "name": "_tokenAmount", "type": "uint256" } ], "name": "setCrowdFunding", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_document", "type": "string" } ], "name": "setDocument", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_logo", "type": "string" } ], "name": "setLogo", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_property", "type": "string" } ], "name": "setProperty", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_webSite", "type": "string" } ], "name": "setWebsite", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_from", "type": "address" }, { "name": "_to", "type": "address" }, { "name": "_value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "unpause", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_logo", "type": "string" }, { "name": "_webSite", "type": "string" }, { "name": "_links", "type": "string" }, { "name": "_rights", "type": "string" }, { "name": "_description", "type": "string" } ], "name": "updateProfile", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "inputs": [ { "name": "_name", "type": "string" }, { "name": "_symbol", "type": "string" }, { "name": "_decimals", "type": "uint8" }, { "name": "_supply", "type": "uint256" }, { "name": "_freezenAmount", "type": "uint256" }, { "name": "_freezenTime", "type": "uint256" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "tokenName", "type": "string" }, { "indexed": false, "name": "logo", "type": "string" }, { "indexed": false, "name": "webSite", "type": "string" }, { "indexed": false, "name": "links", "type": "string" }, { "indexed": false, "name": "rights", "type": "string" }, { "indexed": false, "name": "description", "type": "string" } ], "name": "ProfileHistory", "type": "event" }, { "anonymous": false, "inputs": [], "name": "Pause", "type": "event" }, { "anonymous": false, "inputs": [], "name": "Unpause", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "previousOwner", "type": "address" } ], "name": "OwnershipRenounced", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "previousOwner", "type": "address" }, { "indexed": true, "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "owner", "type": "address" }, { "indexed": true, "name": "spender", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "from", "type": "address" }, { "indexed": true, "name": "to", "type": "address" }, { "indexed": false, "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" }, { "name": "_spender", "type": "address" } ], "name": "allowance", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "crowdFunding", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "decimals", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "description", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "document", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "founder", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "freezenAmount", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "freezenTime", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "INITIAL_SUPPLY", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "_founder", "type": "address" }, { "name": "_amount", "type": "uint256" } ], "name": "isFounderFreezen", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "issueDate", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "links", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "logo", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "name", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "paused", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "property", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "rights", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "symbol", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "totalSupply", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "version", "outputs": [ { "name": "", "type": "uint8" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "website", "outputs": [ { "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }]

var newCRC20SmartTokenContract = web3.cmt.contract(crc20Abi, function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var deployedYuanToken = newCRC20SmartTokenContract.at("0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe")

var timVar = web3.cmt.contract(crc20Abi,function(error, result){if(!error){console.log(result)}else{console.log(error)}});

var deployedTimToken = timVar.at("0x0aafb9299daafc32a051086e92847fab1ef85b50")

Testing of these variables for the YUAN token can be done as follows

deployedUniswapFactoryContract.getToken(yuanExchangeInstance.address)
//"0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"
deployedUniswapFactoryContract.getExchange(deployedYuanToken.address)
//"0xaf1a51fdca46190e7703b6cf97470efc92ec6498"
deployedUniswapFactoryContract.exchangeTemplate()
//"0xf02ce53600badb397215b3ab799c76f5626994cf"
deployedUniswapFactoryContract.address
//"0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba"
yuanExchangeInstance.factoryAddress()
//"0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba"
yuanExchangeInstance.tokenAddress()
//"0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"
deployedYuanToken.address
//"0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"
deployedUniswapFactoryContract.getToken(yuanExchangeInstance.address)
//"0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"

Testing of these variables for the TIM token can also be done as follows

deployedUniswapFactoryContract.getToken(timExchangeInstance.address)
//"0x0aafb9299daafc32a051086e92847fab1ef85b50"
deployedUniswapFactoryContract.getExchange(deployedTimToken.address)
//"0x33eda5a874732ee81a0364611d81fd34faf6eccf"
deployedUniswapFactoryContract.exchangeTemplate()
//"0xf02ce53600badb397215b3ab799c76f5626994cf"
deployedUniswapFactoryContract.address
//"0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba"
timExchangeInstance.factoryAddress()
//"0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba"
timExchangeInstance.tokenAddress()
//"0x0aafb9299daafc32a051086e92847fab1ef85b50"
deployedTimToken.address
//"0x0aafb9299daafc32a051086e92847fab1ef85b50"
deployedUniswapFactoryContract.getToken(timExchangeInstance.address)
"0x0aafb9299daafc32a051086e92847fab1ef85b50"

Frontend (deploying the Uniswap UI)

Create an instance of Ubuntu Linux.

Install yarn by following the instructions at the following URL

https://yarnpkg.com/lang/en/docs/install/#debian-stable

You will need build-essential, if you don't already have it installed

sudo apt-get install build-essential

Please install node by following the instructions at the following URL

https://github.com/nodesource/distributions/blob/master/README.md#debinstall

Check out the Uniswap frontend source code

git clone https://github.com/CyberMiles/uniswap-frontend.git

Update the contract addresses (using the values from the smart contract work which we did above) in the following file.

~/uniswap-frontend/src/ducks/addresses.js

Here is an example. The tokenAddresses -> addresses is the token symbol and token contract address. The exchangeAddresses -> addresses is the token symbol and the Uniswap exchange contract instance's address The exchangeAddresses -> fromToken is a mapping between the two values above i.e. oneside is token address and other side is exchange address. the factoryAddress is the Uniswap factory's contract address

const TRAVIS = {
    "tokenAddresses": {
        "addresses": [
            [
                "YUAN",
                "0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe"
            ]
        ]
    },
    "exchangeAddresses": {
        "addresses": [
            [
                "YUAN",
                "0xaf1a51fdca46190e7703b6cf97470efc92ec6498"
            ]
        ],
        "fromToken": {
            "0xc4c97929301eb30ff5c9c3150bbbe553768ffbbe": "0xaf1a51fdca46190e7703b6cf97470efc92ec6498"
        }
    },
    "factoryAddress": "0x7753d7fb5d93ff9af0cffcd578f7c3bbc3d303ba"
};

To run Uniswap, type the following commands

cd /home/ubuntu/uniswap-frontend
npm install
yarn start:travis --loglevel verbose

Uniswap frontend operation

The Uniswap frontend operation is demonstrated in this YouTube video.

Managing your identity and signing transactions

You can use Uniswap as demonstrated in the above video via your Chrome web browser by utilizing the CyberMiles MetaMask extension.

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deploying_uniswap.md

deploying_uniswap.md

Uniswap deployment instructions

Backend (smart contracts)

Housekeeping

Factory

Exchange

Creating a new token for the new exchange

Creating an Exchange for the token

Adding liquidity to an exchange

Restoring web3 variables in a new session

Frontend (deploying the Uniswap UI)

Uniswap frontend operation

Managing your identity and signing transactions

Files

deploying_uniswap.md

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deploying_uniswap.md

File metadata and controls

Uniswap deployment instructions

Backend (smart contracts)

Housekeeping

Factory

Exchange

Creating a new token for the new exchange

Creating an Exchange for the token

Adding liquidity to an exchange

Restoring web3 variables in a new session

Frontend (deploying the Uniswap UI)

Uniswap frontend operation

Managing your identity and signing transactions