eum602

INTRO TO DHT =====> https://medium.com/unitychain/intro-to-dht-e98425fc05f1
uWebsockets =====> https://github.com/uNetworking/uWebSockets.js
WebService architecture - Golang =====> https://medium.com/@boobo94/web-service-architecture-for-golang-developers-a4147b8141ff
Blockchain reference architecture =====> https://medium.com/@naveenbalani/blockchain-reference-architecture-a3df6643532c
multiblockchain : https://ieeexplore.ieee.org/document/8327114
packaging new software: http://packaging.ubuntu.com/html/packaging-new-software.html
Raft consensus algorithm : https://www.google.com/amp/s/www.geeksforgeeks.org/raft-consensus-algorithm/amp/
BOOK ethereum2.0 ==> https://lighthouse-book.sigmaprime.io/
eth 2.0 specs ==> https://github.com/ethereum/eth2.0-specs
internet whitepaper: https://web.stanford.edu/class/msande91si/www-spr04/readings/week1/InternetWhitepaper.htm

eum602

web3 = new Web3...
privKey=...
txObject = {
nonce: web3.utils.toHex(txnCount),
gasPrice: web3.utils.toHex(0),
gasLimit: web3.utils.toHex(parseInt(MAX_GAS_PER_TX)),
to: addressTo,
value: web3.utils.toHex(web3.utils.toWei(valueInEther, 'ether')),
data
};

eum602

function setValue(uint _amount) public {
emit stored(msg.sender, _amount);
_value = _amount;
_sender = msg.sender;
}

eum602

function addNewUser(bytes32 hash, bytes32 id, uint startDate, uint exp, uint sex, uint8 age, bytes6 user_hash, StatusCode code, Hobbies hbobbies) external returns(bool) {
    CustomDataType storage user = registry[hash][msg.sender];
    require(user.id==0,"User already exists");
    //******This is only an example ******
    user.id = id;
    user.startDate = startDate;
    user.iat = now*1000;
    user.exp = exp;
    user.sex = sex;
    user.age = age;

eum602

{
    "config" : {
            "chainId" : 2018,
            "constantinoplefixblock" : 0,
            "ibft2" : {
            "blockperiodseconds" : 2,
            "epochlength" : 30000,
            "requesttimeoutseconds" : 4
            }
    },

eum602

{
    "config" : {
            "chainId" : 2018,
            "constantinoplefixblock" : 0,
            "ibft2" : {
            "blockperiodseconds" : 2,
            "epochlength" : 30000,
            "requesttimeoutseconds" : 4
            }
    },

eum602

const Web3 = require('web3');

let web3 = new Web3('ws://localhost:8546');
//console.log(web3);

var subscription = web3.eth.subscribe('logs', {
    address: '0x77Db09300A503F5b4828dC12b57659c6ba945Cff',
    topics: ['0x9ec8254969d1974eac8c74afb0c03595b4ffe0a1d7ad8a7f82ed31b9c8542591']
}, function(error, result){
    if (!error)

eum602

classDiagram
    http_service_runner o-- AppDependencies
    http_service_runner o-- getDefaultAppDependenciesAsync
    http_swap_service_runner o-- getDefaultAppDependenciesAsync
    http_swap_service_runner o-- AppDependencies
    http_service_runner o-- SwapRouter
    http_swap_service_runner o-- SwapRouter
    SwapRouter o-- SwapHandlers
    SwapHandlers o-- SwapService
    SwapService o-- SwapQuoter

eum602

classDiagram
    Proxy <|-- ERC1967Proxy
    ERC1967Utils --o ERC1967Proxy
    ERC1967Proxy <|-- TransparentUpgradeableProxy
    Ownable <|-- ProxyAdmin
    TransparentUpgradeableProxy o-- ProxyAdmin

    
    Proxy <|-- BeaconProxy
    BeaconProxy o-- IBeacon

eum602

https://www.w3.org/TR/vc-data-integrity/#relationship-to-verifiable-credentials
created, expires, validFrorm and validUntil