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Added feature trigger timestamp (TBC) to increase online accounts mempow difficulty (also TBC).

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This commit is contained in:
CalDescent 2022-10-28 17:20:39 +01:00
parent 59a804c560
commit 166425bee9
3 changed files with 19 additions and 8 deletions
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7
src/main/java/org/qortal/block/BlockChain.java
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@ -73,7 +73,8 @@ public class BlockChain {
calcChainWeightTimestamp,
transactionV5Timestamp,
transactionV6Timestamp,
disableReferenceTimestamp;
disableReferenceTimestamp,
increaseOnlineAccountsDifficultyTimestamp;
}
// Custom transaction fees
@ -478,6 +479,10 @@ public class BlockChain {
return this.featureTriggers.get(FeatureTrigger.disableReferenceTimestamp.name()).longValue();
}
public long getIncreaseOnlineAccountsDifficultyTimestamp() {
return this.featureTriggers.get(FeatureTrigger.increaseOnlineAccountsDifficultyTimestamp.name()).longValue();
}
// More complex getters for aspects that change by height or timestamp

17
src/main/java/org/qortal/controller/OnlineAccountsManager.java
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@ -66,7 +66,8 @@ public class OnlineAccountsManager {
// MemoryPoW - mainnet
public static final int POW_BUFFER_SIZE = 1 * 1024 * 1024; // bytes
public static final int POW_DIFFICULTY = 18; // leading zero bits
public static final int POW_DIFFICULTY_V1 = 18; // leading zero bits
public static final int POW_DIFFICULTY_V2 = 19; // leading zero bits
// MemoryPoW - testnet
public static final int POW_BUFFER_SIZE_TESTNET = 1 * 1024 * 1024; // bytes
@ -128,11 +129,14 @@ public class OnlineAccountsManager {
return POW_BUFFER_SIZE;
}
private static int getPoWDifficulty() {
private static int getPoWDifficulty(long timestamp) {
if (Settings.getInstance().isTestNet())
return POW_DIFFICULTY_TESTNET;
return POW_DIFFICULTY;
if (timestamp >= BlockChain.getInstance().getIncreaseOnlineAccountsDifficultyTimestamp())
return POW_DIFFICULTY_V2;
return POW_DIFFICULTY_V1;
}
private OnlineAccountsManager() {
@ -628,7 +632,8 @@ public class OnlineAccountsManager {
final long nextOnlineAccountsTimestamp = toOnlineAccountTimestamp(startTime) + getOnlineTimestampModulus();
long timeUntilNextTimestamp = nextOnlineAccountsTimestamp - startTime;
Integer nonce = MemoryPoW.compute2(bytes, getPoWBufferSize(), getPoWDifficulty(), timeUntilNextTimestamp);
int difficulty = getPoWDifficulty(onlineAccountsTimestamp);
Integer nonce = MemoryPoW.compute2(bytes, getPoWBufferSize(), difficulty, timeUntilNextTimestamp);
double totalSeconds = (NTP.getTime() - startTime) / 1000.0f;
int minutes = (int) ((totalSeconds % 3600) / 60);
@ -637,7 +642,7 @@ public class OnlineAccountsManager {
LOGGER.info(String.format("Computed nonce for timestamp %d and account %.8s: %d. Buffer size: %d. Difficulty: %d. " +
"Time taken: %02d:%02d. Hashrate: %f", onlineAccountsTimestamp, Base58.encode(publicKey),
nonce, getPoWBufferSize(), getPoWDifficulty(), minutes, seconds, hashRate));
nonce, getPoWBufferSize(), difficulty, minutes, seconds, hashRate));
return nonce;
}
@ -658,7 +663,7 @@ public class OnlineAccountsManager {
}
// Verify the nonce
return MemoryPoW.verify2(mempowBytes, workBuffer, getPoWBufferSize(), getPoWDifficulty(), nonce);
return MemoryPoW.verify2(mempowBytes, workBuffer, getPoWBufferSize(), getPoWDifficulty(onlineAccountData.getTimestamp()), nonce);
}

3
src/main/resources/blockchain.json
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@ -79,7 +79,8 @@
"calcChainWeightTimestamp": 1620579600000,
"transactionV5Timestamp": 1642176000000,
"transactionV6Timestamp": 9999999999999,
"disableReferenceTimestamp": 1655222400000
"disableReferenceTimestamp": 1655222400000,
"increaseOnlineAccountsDifficultyTimestamp": 9999999999999
},
"genesisInfo": {
"version": 4,