Traackr

❤️

Ethereum

1.Blockchain

2. Use Case
3. Tech 

1. Blockchain

&

Ethereum

Tx

Transaction

Tx

Transactions

Tx

Tx

Tx

Block

Tx

Tx

Tx

Tx

Blocks

Tx

Tx

Tx

Tx

Tx

Tx

Tx

Blockchain

4,334,210

Transaction

Tokens

Transaction

Tokens

Transaction

Contract

Data

Transaction

Contract

Contract

Data

Smart Contract

Contract

contract Voting {
  ...
  function voteForCandidate(bytes32 cand) {
    votesReceived[cand] += 1;
  }
  function totalVotesFor(bytes32 cand) returns (uint8) {
    return votesReceived[cand];
  }
  ...
}

2. Use Case

2. Tech

 > node
 web3.<function>
 > geth console
 web3.<function>

geth

testrpc

ROPSTEN

HOMESTEAD

https://etherscan.io

http://faucet.ropsten.be:3001/

Account 1
Account 2
Account 10
...
Account:
0xd871a40290563381F6BD203B20B8013cAcc1152B
 > node
 solc.compile()
Balance: 3Eth
solidity

Compile

Deploy

pragma solidity ^0.4.11;

contract ProjectEngagement {

   // Project name
   bytes32 project;

   // Influencer UID
   bytes32 influencerUID;

   // Engagement reward
   // I.e. tokens awarded for each engament point
   uint8 engagementReward;

   // Total reward accumulated
   unit8 totalReward;

   // Engagement performance. Mapping period to engagement for that period
   mapping (bytes32 => uint8) public periodEngagement;

   // Has the influencer aggreed to this contract
   bool accepted;

   /*
    Constructor to initialize contract
    */
   function ProjectEngagement(bytes32 project, bytes32 inf, uint8 reward) {
      project = project;
      influencerUID = inf;
      engagementReward = reward;
   }

   // Update weekly performance
   function updateEngagement(bytes32 period, uint8 engagement) {
      periodEngagemett[period] = engagement;
      totalReward += engagement * engagementReward
   }

   // Total rewrd accumulated so far
   function totalReward() return (uint8) {
      return totalReward;
   }

}

QUESTIONS

Traackr ❤️ Ethereum

By David Chancogne

Traackr ❤️ Ethereum

  • 849