Bitcoin hit a record of $62,741 this morning, extending its 2021 rally to new heights a day ahead of Coinbase's initial public offering.

The largest US cryptocurrency exchange's listing on the Nasdaq tomorrow is considered a landmark victory for cryptocurrency advocates.

Bitcoin, the world's biggest cryptocurrency, which has growing mainstream acceptance as an investment and a means of payment, rose as much as 5% today.

Smaller rival Ethereum also reached a record high of $2,205.

Major firms including BNY Mellon, Mastercard and Tesla are among those to have embraced or invested in cryptocurrencies.

Bitcoin topped $60,000 early last month, fuelled by Tesla's move to buy $1.5 billion of the digital currency for its balance sheet. For the past two weeks, it had traded in a tight range.

"When bitcoin markets create new highs the price often range-trades and we witness a round of profit-taking," said James Butterfill of digital asset manager CoinShares.

"During this most recent period have witnessed a similar profit-taking round, which now looks to have run its course."

The multi-fold rise in cryptocurrencies is also driven by investors seeking high-yielding assets amid low interest rates.

However, the meteoric rise of bitcoin, which traded at a few hundred dollars only five years earlier, has led major investment banks to warn of a speculative bubble.

Several fund managers surveyed by Bank of America and Deutsche Bank have said Bitcoin was in "bubble" territory and that they expect it to pull back sharply.