Here is the English translation of your HTML content without altering the format:
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WorldCoin, officially known as WorldCoin in English and abbreviated as WDC, was officially released by foreign engineers on May 14, 2013. This coin was first introduced on the Bitcoin Forum, based on the scrypt algorithm, with a total supply of 265,420,800 coins. WDC is a fast-confirmation digital currency that generates 1 block every 30 seconds, requiring only 2 confirmations to fully credit the transaction. The initial block reward for WDC was 64 (each block contained 64 WDC), but this figure decreases by approximately 1% every week. As of April 2021, the block reward for WDC has declined to around 3.8 WDC per block.
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