Dec 5 (Reuters) - Bitcoin catapulted above $100,000 for the first time on Thursday, a milestone hailed even by sceptics as a coming-of-age for digital assets as investors bet on a friendly U.S. administration to cement the place of cryptocurrencies in financial markets.

Once it broke $100,000 in Thursday's Asian morning, boosted by U.S. President-elect Trump's nomination of pro-crypto Paul Atkins to run the Securities and Exchange Commission, it was soon at an all-time high of $103,619. It was last fetching $102,675, up about 5% on the day .

The total value of the cryptocurrency market has almost doubled over the year so far to hit a record over $3.8 trillion, according to data provider CoinGecko. By comparison, Apple (AAPL.O), opens new tab alone is worth about $3.7 trillion.

Bitcoin's march from the libertarian fringe to Wall Street has minted millionaires, a new asset class and popularised the concept of "decentralised finance" in a volatile and often controversial period since its creation 16 years ago.

Bitcoin has more than doubled in value this year and is up more than 50% in the four weeks since Donald Trump's sweeping election victory, which also saw a slew of pro-crypto lawmakers being elected to Congress.

"We're witnessing a paradigm shift," said Mike Novogratz, founder and CEO of U.S. crypto firm Galaxy Digital.

"Bitcoin and the entire digital asset ecosystem are on the brink of entering the financial mainstream - this momentum is fuelled by institutional adoption, advancements in tokenisation and payments, and a clearer regulatory path."

Trump - who once labelled crypto a scam - embraced digital assets during his campaign, promising to make the United States the "crypto capital of the planet" and to accumulate a national stockpile of bitcoin.

"We were trading basically sideways for about seven months, then immediately after Nov. 5, U.S. investors resumed buying hand-over-fist," said Joe McCann, CEO and founder of Asymmetric, a Miami digital assets hedge fund.

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