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Remove difficulty adjustment calculation lag in the backend

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nymkappa 2023-03-26 17:01:04 +09:00
parent edfbede704
commit c7cab4c877
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GPG Key ID: E155910B16E8BD04
1 changed files with 9 additions and 12 deletions
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21
backend/src/api/difficulty-adjustment.ts
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@ -24,7 +24,6 @@ export function calcDifficultyAdjustment(
network: string, network: string,
latestBlockTimestamp: number, latestBlockTimestamp: number,
): DifficultyAdjustment { ): DifficultyAdjustment {
const ESTIMATE_LAG_BLOCKS = 146; // For first 7.2% of epoch, don't estimate.
const EPOCH_BLOCK_LENGTH = 2016; // Bitcoin mainnet const EPOCH_BLOCK_LENGTH = 2016; // Bitcoin mainnet
const BLOCK_SECONDS_TARGET = 600; // Bitcoin mainnet const BLOCK_SECONDS_TARGET = 600; // Bitcoin mainnet
const TESTNET_MAX_BLOCK_SECONDS = 1200; // Bitcoin testnet const TESTNET_MAX_BLOCK_SECONDS = 1200; // Bitcoin testnet
@ -38,17 +37,15 @@ export function calcDifficultyAdjustment(
let difficultyChange = 0; let difficultyChange = 0;
let timeAvgSecs = blocksInEpoch ? diffSeconds / blocksInEpoch : BLOCK_SECONDS_TARGET; let timeAvgSecs = blocksInEpoch ? diffSeconds / blocksInEpoch : BLOCK_SECONDS_TARGET;
// Only calculate the estimate once we have 7.2% of blocks in current epoch
if (blocksInEpoch >= ESTIMATE_LAG_BLOCKS) { difficultyChange = (BLOCK_SECONDS_TARGET / timeAvgSecs - 1) * 100;
difficultyChange = (BLOCK_SECONDS_TARGET / timeAvgSecs - 1) * 100; // Max increase is x4 (+300%)
// Max increase is x4 (+300%) if (difficultyChange > 300) {
if (difficultyChange > 300) { difficultyChange = 300;
difficultyChange = 300; }
} // Max decrease is /4 (-75%)
// Max decrease is /4 (-75%) if (difficultyChange < -75) {
if (difficultyChange < -75) { difficultyChange = -75;
difficultyChange = -75;
}
} }
// Testnet difficulty is set to 1 after 20 minutes of no blocks, // Testnet difficulty is set to 1 after 20 minutes of no blocks,