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Create Your Own Marriage Contract on Ethereum

Create Your Own Marriage Contract on Ethereum

Prerequisites:

  • geth
  • An Ethereum account with some ether te it
  • Google Chrome

Navigate to this webstek.

The Solidity Online Realtime Compiler is a powerful implement that permits you to vormgeving, test, and deploy Ethereum contracts.

Open geth

The online Solidity compiler has the capability to connect to running instances of your geth knot through RPC and IPC. Below are the flags you need to add when you commence geth te order to permit your knot to communicate with the webstek.

geth –unlock 0 –rpc –rpcport “8545” –ipcapi “admin,db,eth,debug,miner,nipt,shh,txpool,private,web3” –rpcapi “db,eth,netwerken,web3” –rpccorsdomain “http://chriseth.github.io” console

If you’d like to have access to the geth console te a 2nd directive prompt window, open another console window and inject geth fasten to fasten that console window to your geth example.

You may want to make a script so you can lightly open your geth console. I accomplished this on my Windows system by creating a opstopping called geth_unlocked.cmd which opens my geth console.

Connect to Your Knot Through RPC/IPC

Back at the Solidity Compiler webstek, wij want to connect to our geth knot overheen either RPC or IPC. Most people will want to connect overheen RPC. Click the Cube icon. Switch the address and port ter the “Web3 provider input” opbergruimte to match the flags you set to launch geth. If you used the previous step to launch geth your address and port should be http://localhost:8545 .

A dialog opbergruimte may speelpop up warning you if you want to connect. Click “OK”.

Create Your Contract and Call Your Contract Functions

Click the crimson “Create” button on below your knot connection settings. Your transaction will soon be mined (normally within 30 seconds) and your public variables (te blue) and your functions (te crimson) will emerge below. Add information to the function calls to create your marriage on the blockchain. Note that Ethereum doesn’t always understand the difference inbetween a string and a hex value, so this online compiler differentiates the two by using quotes. If you want to submit a string, surround that string ter quotes. For the time values you will need to use a converter webpagina like this to convert your date and time entires to Unix epoch time. Once you have entered the gegevens you want to send to Ethereum, click on the crimson function buttons that you have gegevens entered for. This will create and shove a transaction to the Ethereum network.

Explore Your Raw Gegevens

Once the transactions are mined, a transaction receipt will show up under the function. You can also click on the blue variable buttons to view the state variables that have bot switched ter the contract (many of them will come back spil hexidecimal and will need to be converted to ASCII values to view decently).

If you scroll further down, you will see the events that were produced because of the functions you called.

Look at your geth window. You can see that right after you submitted your transactions they were added into blocks and mined.

View Your Contract Gegevens on My Webpagina and A Blockchain Explorer

Navigate back to the online Solidity compiler and copy the contract address and all of the text ter the “Interface” opbergruimte to a text editor. The contract address is a unique address that identifies your contract on the blockchain based on Three things: the contract code, your Ethereum address, and the number of times you have sent transactions from your Ethereum address (a.k.a the nonce). The text te the interface opbergruimte is called the ABI – Application Binary Interface. It is used to opbergmap your variables and functions you want to call ter your web app back to the contract. It is the interface layer inbetween your high level Dapp and the low level Ethereum blockchain code.

Navigate to my Ethereum marriage webstek. Te the opbergruimte marked “Contract Address” come in your contract address. Come in your ABI information te the ABI opbergruimte. After making sure you are connected to geth through the webstek, click the green button to see your marriage information you added to the blockchain. If you’d like to see more details about your contract on the blockchain, click on the dark blue button that says “View wise contract on the Ethereum blockchain”.

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