ngrinkevich

contract CallbackContract {

    uint256 internal _randomNumber;

    /**
     * @dev Example of a callback method.
    */
    function callback(uint256 requestResponse)
        public
    {

ngrinkevich

async requestRelayEntry() {
  let request = await this.state.randomBeacon.requestRelayEntry(
    0, 0, callbackContract.address, "callback(uint256)", {from: this.state.yourAddress, gas: 150000}
  );
  let requestId = request.logs[0].args.requestID.toNumber();
  this.setState({
    loading: true,
    requestId: requestId
  });
}

ngrinkevich

randomBeacon.RelayEntryGenerated().watch((error, result) => {
  if (result.args.requestID.toNumber() === this.state.requestId) {
    let randomBigNumber = result.args.requestResponse;
    // ...
  }
});

ngrinkevich

async requestRelayEntry() {
  let request = await this.state.randomBeacon.requestRelayEntry(0, 0, 0, "", {from: this.state.yourAddress, gas: 150000});
  let requestId = request.logs[0].args.requestID.toNumber();
  this.setState({
    loading: true,
    requestId: requestId
  });
}

ngrinkevich

/**
 * @dev Creates a request to generate a new relay entry, which will include a
 * random number (by signing the previous entry's random number).
 * @param blockReward The value in KEEP for generating the signature.
 * @param seed Initial seed random value from the client. It should be a cryptographically generated random value.
 * @param callbackContract Callback contract address.
 * @param callbackMethod Callback contract method signature.
 * @return An uint256 representing uniquely generated ID. It is also returned as part of the event.
*/
function requestRelayEntry(

ngrinkevich

alias kc='kubectl'
alias kclf='kubectl logs --tail=200  -f'
alias kcgs='kubectl get service -o wide'
alias kcgd='kubectl get deployment -o wide'
alias kcgp='kubectl get pod -o wide'
alias kcgn='kubectl get node -o wide'
alias kcdp='kubectl describe pod'
alias kcds='kubectl describe service'
alias kcdd='kubectl describe deployment'
alias kcdf='kubectl delete -f'

ngrinkevich

Keybase proof

I hereby claim:

• I am ngrinkevich on github.
• I am nikgrinkevich (https://keybase.io/nikgrinkevich) on keybase.
• I have a public key whose fingerprint is 2010 C31E 8467 2E7B CAAD A429 B33D B6D8 3F2A 0C9B

To claim this, I am signing this object:

ngrinkevich

Verifying my Blockstack ID is secured with the address 1N7FJhVSPcrJ95goyecQmaxqtJsZG8gr2P https://explorer.blockstack.org/address/1N7FJhVSPcrJ95goyecQmaxqtJsZG8gr2P

ngrinkevich

import "AssetLedger.sol";

// TODO describe rules of exchange.
// In the AF market all users benefit from a "last look" facility to prevent 
// them falling foul of mechanical arb sniping by those exploiting the way
// the blockchain and smart contract data lags the real markets being tracked.
// The system proceeds through a series of batching steps, which in practice
// might correspond to some number of blocks (for example, each batching step
// corresponds to a block). Orders collected in batching step B_i are initially
// in a "pending" state although visible within the book. Orders then remain

ngrinkevich

createNode((err, node) => {
    if (err) {
      return console.log('Could not create the Node', err)
    }

    node.on('peer:discovery', (peerInfo) => {
      const idStr = peerInfo.id.toB58String()
      console.log('Discovered a peer:', idStr)
    })