DistributedTrust.abi

[
	{
		"constant": true,
		"inputs": [
			{
				"name": "factIndex",
				"type": "uint256"
			},
			{
				"name": "validator",
				"type": "address"
			}
		],
		"name": "isTrustedBy",
		"outputs": [
			{
				"name": "isTrusted",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [],
		"name": "pointer",
		"outputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "factIndex",
				"type": "uint256"
			}
		],
		"name": "attest",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "",
				"type": "uint256"
			},
			{
				"name": "",
				"type": "address"
			}
		],
		"name": "validations",
		"outputs": [
			{
				"name": "",
				"type": "bool"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"constant": false,
		"inputs": [
			{
				"name": "description",
				"type": "string"
			},
			{
				"name": "meta",
				"type": "string"
			}
		],
		"name": "newFact",
		"outputs": [],
		"payable": false,
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"constant": true,
		"inputs": [
			{
				"name": "",
				"type": "uint256"
			}
		],
		"name": "facts",
		"outputs": [
			{
				"name": "reportedBy",
				"type": "address"
			},
			{
				"name": "description",
				"type": "string"
			},
			{
				"name": "meta",
				"type": "string"
			},
			{
				"name": "validationCount",
				"type": "uint256"
			}
		],
		"payable": false,
		"stateMutability": "view",
		"type": "function"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": false,
				"name": "factIndex",
				"type": "uint256"
			},
			{
				"indexed": true,
				"name": "reportedBy",
				"type": "address"
			},
			{
				"indexed": false,
				"name": "description",
				"type": "string"
			},
			{
				"indexed": false,
				"name": "meta",
				"type": "string"
			}
		],
		"name": "NewFact",
		"type": "event"
	},
	{
		"anonymous": false,
		"inputs": [
			{
				"indexed": true,
				"name": "factIndex",
				"type": "uint256"
			},
			{
				"indexed": false,
				"name": "validator",
				"type": "address"
			}
		],
		"name": "AttestedFact",
		"type": "event"
	}
]

DistributedTrust.sol

pragma solidity ^0.4.20;

contract Pointer {
    uint256 public pointer;

    function bumpPointer() internal returns (uint256 p) {
        return pointer++;
    }
}

contract DistributedTrust is Pointer {

    mapping(uint256 => Fact) public facts;
    mapping(uint256 => mapping(address => bool)) public validations;

    event NewFact(uint256 factIndex, address indexed reportedBy, string description, string meta);
    event AttestedFact(uint256 indexed factIndex, address validator);

    struct Fact {
        address reportedBy;
        string description;
        string meta;
        uint validationCount;
    }

    modifier factExist(uint256 factIndex) {
        assert(facts[factIndex].reportedBy != 0);
        _;
    }

    modifier notAttestedYetBySigner(uint256 factIndex) {
        assert(validations[factIndex][msg.sender] != true);
        _;
    }

    function newFact(string description, string meta) public {
        uint256 factIndex = bumpPointer();
     
        facts[factIndex] = Fact(msg.sender, description, meta, 0);
        attest(factIndex);
        
        NewFact(factIndex, msg.sender, description, meta);
    }

    function attest(uint256 factIndex) factExist(factIndex) notAttestedYetBySigner(factIndex) public returns (bool) {
        validations[factIndex][msg.sender] = true;
        facts[factIndex].validationCount++;
        
        AttestedFact(factIndex, msg.sender);
        return true;
    }
    
    function isTrustedBy(uint256 factIndex, address validator) factExist(factIndex) view public returns (bool isTrusted) {
        return validations[factIndex][validator];
    }

}

gistfile1.txt

Published at: 0x69dc41428b1457232ce454a4b9d8e67709243996
execute `attest` method with `0` as param