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Mining

Examples of CityCoin contract functions related to mining.

Mining a Single Block

Requires:
  • @stacks/network
  • @stacks/transactions
  • @stacks/connect-react
// example: mining a single block with 10 STX
const NETWORK = new StacksMainnet(); // set network from @stacks/network
const { doContractCall } = useConnect(); // hook for Stacks Connect
let totalUstx = 10000000; // amount of uSTX to spend in block
let totalUstxCV = uintCV(totalUstx);
let memoCV = someCV(bufferCVFromString('an optional memo'));
// alternate if no memo:
// let memoCV = noneCV();
try {
await doContractCall({
contractAddress: 'SP466FNC0P7JWTNM2R9T199QRZN1MYEDTAR0KP27',
contractName: 'miamicoin-core-v1',
functionName: 'mine-tokens',
functionArgs: [totalUstxCV, memoCV],
postConditionMode: PostConditionMode.Deny,
postConditions: [
makeStandardSTXPostCondition(
ownerStxAddress,
FungibleConditionCode.Equal,
totalUstxCV.value
),
],
network: NETWORK,
onCancel: () => {
// what to do if tx is canceled / window is closed
console.log('Transaction canceled, please try again');
},
onFinish: result => {
// what to if tx is successfully broadcasted
console.log(`Transaction successfully broadcasted:\n${result.txId}`);
},
});
} catch (err) {
console.log(`Error: ${err.message}`);
}

Mining for Multiple Blocks

Requires:
  • @stacks/network
  • @stacks/transactions
  • @stacks/connect-react
// example: mining 10 blocks with 5, 10, and 15 STX per block
const NETWORK = new StacksMainnet(); // set network from @stacks/network
const { doContractCall } = useConnect(); // hook for Stacks Connect
// initialize variables
let commitsUstx = [5000000, 10000000, 15000000, 5000000, 10000000, 15000000, 5000000, 10000000, 15000000, 5000000];
let totalUstx = 0;
let totalUstxCV = uintCV(0);
let mineManyArray = [];
let mineManyArrayCV = listCV([]);
// set up contract submission data
for (let i = 0; i < commits.length; i++) {
mineManyArray.push(uintCV(amount));
totalUstx += amount;
}
totalUstxCV = uintCV(totalUstx);
mineManyArrayCV = listCV(mineManyArray);
try {
await doContractCall({
contractAddress: 'SP466FNC0P7JWTNM2R9T199QRZN1MYEDTAR0KP27',
contractName: 'miamicoin-core-v1',
functionName: 'mine-many',
functionArgs: [mineManyArrayCV],
postConditionMode: PostConditionMode.Deny,
postConditions: [
makeStandardSTXPostCondition(
ownerStxAddress,
FungibleConditionCode.Equal,
totalUstxCV.value
),
],
network: NETWORK,
onCancel: () => {
// what to do if tx is canceled / window is closed
console.log('Transaction canceled, please try again');
},
onFinish: result => {
// what to if tx is successfully broadcasted
console.log(`Transaction successfully broadcasted:\n${result.txId}`);
},
});
} catch (err) {
console.log(`Error: ${err.message}`);
}