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Blockchains are kept in "peer-to-peer" networks that are continually updated and kept in synchronization. It would require huge amounts of computing power to access every instance of a certain blockchain and alter all its blocks at the same time. A network of tech-savvy users known as miners pour their computing power into maintaining the blockchain and verifying its transactions, ensuring that someone cannot spend the same coin again after paying for something with it.

Boosted by domestic demand, the business sector and rural areas saw more express deliveries in July from the previous month.

Bob Chapek, who became the Walt Disney CEO in February, said on an earnings call Wednesday morning that the decision, made jointly with local partner Shanghai Shendi Group, follows "encouraging signs of a gradual return to some semblance of normalcy in China" and the successful reopenings of facilities adjacent to the park, including Disneytown, a shopping, dining and entertainment complex, and Shanghai Disneyland Hotel, in March.

Both markets are now tightening for US cranberries, with the EU’s 25 percent tariff on US cranberry juice concentrate imports started June 22, and China’s 25 percent tariff on fresh and dried cranberries effective July 6.

Bolton, however, said on Monday that the Russians did not admit US allegations as they insisted that Moscow did not violate the treaty.