Cryptocurrencies like Bitcoin are becoming increasingly popular.

Angela Lang / CNET

Twitter boss Jack Dorsey has set up his own Bitcoin node.

In a tweet posted late Thursday evening, Dorsey shared a photo of his computer with Bitcoin node software. Nodes are part of the cryptocurrency infrastructure and validate transactions. They keep a full copy of Bitcoin’s blockchain ledger, which records all transactions in the cryptocurrency.

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Dorsey’s involvement comes from the fact that Bitcoin and other cryptocurrencies are seeing a surge in popularity and prices. Although bitcoin is volatile, it is currently trading at nearly $ 38,000 per coin after hitting an all-time high of just under $ 42,000 last month. Many cryptocurrencies have become popular in recent years, including alternative or “altcoin” cryptocurrencies such as Dogecoin. Cryptocurrencies are stored in digital wallets, a design feature that can lead to this a headache when passwords are lost or forgotten.

The CEO of Twitter and Square isn’t the only high profile person backing Bitcoin. Earlier this year, Elon Musk temporarily tagged his Twitter account with the hashtag #bitcoin, an obvious indication of support for the cryptocurrency. The Tesla boss has too tweeted via Dogecoin, a cryptocurrency that began as joke.

Last year, a massive bitcoin scam Played on Twitter after scammers targeted the accounts of Bill Gates, Kanye West, Barack Obama, Musk, and other famous tech managers, entertainers, and politicians. Apple, Uber, and other companies were also in the extensive hackwho attributed Twitter to a social engineering attack on its employees.