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const nodeUrl = "wss://rpc-private-a-vip-catnet.iov.one";
const mnemonic = "twin document gold guide asset false rival rib civil squeeze they upper";
const escrowIds = [3, 4, 8, 10, 22, 34, 46, 58];

const profile = new UserProfile();
const signer = new MultiChainSigner(profile);
const { connection } = await signer.addChain(createBnsConnector(nodeUrl));
const chainId = connection.chainId();
const wallet = profile.addWallet(Ed25519HdWallet.fromMnemonic(mnemonic));

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const part1 = 'pencil accuse tennis element peanut tent venue message process stove glory gym'
const part2 = 'panic roof boil axis mom enjoy change margin stove heavy forum food'

const part1Entropy = Bip39.decode(new EnglishMnemonic(part1))
const part2Entropy = Bip39.decode(new EnglishMnemonic(part2))

const restoredEntropy = part1Entropy.map((byte, index) => byte ^ part2Entropy[index]) 
const restored = Bip39.encode(restoredEntropy).toString()
// 'dial ring shiver firm connect nominee stairs army large rubber deal crater'

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const original = 'dial ring shiver firm connect nominee stairs army large rubber deal crater'
const entropy = Bip39.decode(new EnglishMnemonic(original))

const part1Entropy = await Random.getBytes(entropy.length /* 16 bytes */)
const part2Entropy = entropy.map((byte, index) => byte ^ part1Entropy[index]) 

const part1 = Bip39.encode(part1Entropy).toString()
// 'pencil accuse tennis element peanut tent venue message process stove glory gym'

const part2 = Bip39.encode(part2Entropy).toString()

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const entropy = await Random.getBytes(16);
toHex(entropy)
// '9f163e1de86807e8370baee878b9d64d'

Bip39.encode(entropy).toString()
// 'pair rapid manual speak lesson village switch into trick shift intact orange'

toHex(Bip39.decode(new EnglishMnemonic('pair rapid manual speak lesson village switch into trick shift intact orange')))
// '9f163e1de86807e8370baee878b9d64d'

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// create some methods in the background script that can be called from the UI
window.getBinary = () => new Uint8Array([1, 2, 3]);
window.getUint8ArrayConstructor = () => Uint8Array;

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function structuredClone(input) {
  // One of 3 ways to access the native implementation of the structured clone
  // algorithm in browsers. See https://dassur.ma/things/deep-copy/
  return new Notification("", { data: input, silent: true }).data;
}

it("instanceof works for structured cloning", () => {
  const original = new Uint8Array([1, 2, 3]);
  const clone = structuredClone(original);

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env:
  node: true
  es6: true
globals:
  Atomics: readonly
  SharedArrayBuffer: readonly
  # jest
  describe: readonly
  expect: readonly
  it: readonly

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On a development machine get a recent Lisk mainnet snapshot and

dropdb --if-exists lisk_main
createdb lisk_main
gunzip -fcq lisk_main_backup-*.gz | psql --quiet --dbname lisk_main

Use a SQL tool to perform this query and export data (e.g. as CSV)

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2019-01-20 20:16:24 Substrate Node
2019-01-20 20:16:24   version 0.10.0-78bb4c0-x86_64-linux-gnu
2019-01-20 20:16:24   by Parity Technologies <[email protected]>, 2017, 2018
2019-01-20 20:16:24 Chain specification: TSP antnet
2019-01-20 20:16:24 Node name: fair-poison-4982
2019-01-20 20:16:24 Roles: FULL
2019-01-20 20:16:24 Generated a new keypair: bf207ddf3aa5af6467c9ec590392db8c31f2ffe3a0771282f40450b1db931382 (5GPJexJM...)
2019-01-20 20:16:26 Initialising Genesis block/state (state: 0xbcd0…c65e, header-hash: 0x7445…5a5e)
2019-01-20 20:16:26 Loaded block-time = 40 seconds from genesis on first-launch
2019-01-20 20:16:26 Loading GRANDPA authorities from genesis on what appears to be first startup.

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========== Build started: Building clFolder01 (kernel.cl) for 22 devices. ==========
========== Build started: Building C:\project\kernel.cl for 22 devices. ==========
1> kernel for Baffin: 
Target GPU detected:

Baffin (Graphics IP v8)
	AMD Radeon (TM) E9260
	AMD Radeon Pro 465
	Radeon (TM) Pro V5300X
	Radeon (TM) Pro WX 4100