ice09

Evaluating xDai Stable Chain for B2B Use Cases

The xDai Stable Chain is an Ethereum sidechain with a native stable coin and a bridge to the Ethereum Mainnet for the native currency xDai, which represents DAI on the Ethereum Mainnet.

A native stable coin is a distinctive feature for financial and other Enterprise use cases which could profit of decentralized aspects of Blockchains, but cannot accept the usage of a highly volatile native crypto currencies.

The xDai Stable Chain is very cheap in transaction fees and very fast, but lacks other important features of the Ethereum Mainnet. This post will try to give enough information to enable the reader to decide if the xDai Stable Chain can be of use for her prototype, PoC, MVP or even a working product.

Intention

ice09

// SPDX-License-Identifier: AGPL
pragma solidity ^0.7.0;

abstract contract ICirclesToken {
    
    function look() virtual public view returns (uint256);

    /// @notice receive a ubi payout
    /// @dev this is the method to actually update storage with new token balance
    function update() virtual public;

ice09

package tech.blockchainers.crypyapi.http.common;

import org.web3j.utils.Numeric;

import java.io.PrintStream;

// taken from https://github.com/eugenp/tutorials/blob/master/data-structures/src/main/java/com/baeldung/printbinarytree/BinaryTreePrinter.java

public class BinaryTreePrinter {

ice09

This post links my 3Box profile to my Github account! Web3 social profiles by 3Box.
    
  ✅ did:3:bafyreigdyuhhpczzveh5lf2gxqhys7gldhxh3qcscdremttjpdvdxl5i7i ✅
    
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ice09

public class ECRecover {

	private void pkDisplay() {
		//0x627306090abaB3A6e1400e9345bC60c78a8BEf57
		String privateKey1 = "c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3";
		Credentials credentials = Credentials.create(privateKey1);
		System.out.println("pk:" + Numeric.toHexStringNoPrefix(credentials.getEcKeyPair().getPublicKey()));

		String message = "now that's a text";
		String label = "\u0019Ethereum Signed Message:\n"+ String.valueOf(message.getBytes().length) + message;

ice09

[
   {
      "password":"123654789",
"keystore": {
      "address":"627306090abab3a6e1400e9345bc60c78a8bef57",
      "crypto":{
         "cipher":"aes-128-ctr",
         "ciphertext":"9e1d0c1693db4b0b6a3d0ee8a81ea21e20dc5fa894437144e0b6e72748f2165b",
         "cipherparams":{
            "iv":"b0da55dd00ecc9f5d161f66b67394ed5"

ice09

    private void pkDisplay(Web3j web3j) throws Exception {
        String privateKey1 = "1587352d059682a7ebb86e4aecc86f73cf418d33f9af4178ce344a3dd41a813b";
        Credentials credentials = Credentials.create(privateKey1);
        log.info("Address: " + credentials.getAddress());

        List<String> labels = Arrays.asList(
                "string message_id",
                "address receiver",
                "uint32 block_created",
                "uint192 balance",

ice09

0xDbdCDb5972E88E5273E46290C0D6bb3a96c23628

ice09

pragma solidity ^0.4.13;

contract tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData); }

contract MyToken {
    /* Public variables of the token */
    string public name;
    string public symbol;
    uint8 public decimals;
    uint256 public totalSupply;

ice09

Keybase proof

I hereby claim:

• I am ice09 on github.
• I am ice09 (https://keybase.io/ice09) on keybase.
• I have a public key whose fingerprint is 0A36 A906 2F16 5F34 4B61 3D96 95E0 239D 9AD5 3D71

To claim this, I am signing this object: