u.today
Today marks exactly 17 years since the day when Adam Back received an email from the mysterious Satoshi Nakamoto.
Satoshi informed Back that his invention, Hashcash, was mentioned in the Bitcoin whitepaper, inviting him to read it.
Satoshi contacted Back in 2008
Adam Back’s company, Blockstream, published a commercial that shows young Back reading the historic email from Satoshi Nakamoto. In it, Satoshi says that he is getting ready to release a whitepaper that references Back’s Hashcash paper and offers an actual use case for Hashcash.
Hashcash is a proof-of-work algorithm to fight spam emails. Satoshi applied it to Bitcoin mining.
The commercial says that later he co-founded Blockstream to “to help build Bitcoin’s future.”
On this day in 2008, Satoshi Nakamoto emailed @adam3us about citing Hashcash in the Bitcoin whitepaper. Adam replied the next day and later co-founded Blockstream to help build Bitcoin’s future.
— Blockstream (@Blockstream) August 20, 2025
That future is now. Bitcoin’s here. Make it yours with the Blockstream app. pic.twitter.com/ZbhRHTsN3y
This email was also historic since now many crypto enthusiasts believe Adam Back to be Satoshi. Even though he has many times rejected that claim, from time to time it surfaces once again.
Satoshi disappeared from the public eye in December 2010 after launching Bitcoin a year earlier, sending the first BTC transaction to Hal Finney and leaving Bitcoin in the hands of the small but eager community of developers who wished to take BTC further. Satoshi wrote his last message on the BitcoinTalk forum, saying that he would be moving on to other projects now that Bitcoin was in the hands of the community.
Coinbase CEO says when Bitcoin will hit $1 million
As reported by U.Today earlier, the CEO of the largest US-based crypto exchange, Coinbase, Brian Armstrong, opined on when he expects Bitcoin to reach a much-anticipated $1 million level.
I think we'll see $1M per bitcoin by 2030.
— Brian Armstrong (@brian_armstrong) August 20, 2025
Regulatory clarity is finally emerging, the US government is keeping a BTC reserve, there's a growing interest for crypto ETFs, among many other factors.
(Not financial advice of course, it's impossible to guarantee) pic.twitter.com/w5EfcYFvVp
Armstrong said he believed it would happen by 2030. It would finally take place, per his words, since regulatory clarity for crypto in the US is finally shaping up, the US government has started to build a Strategic Bitcoin Reserve, and “there's a growing interest for crypto ETFs, among many other factors.” Still, he added that it is impossible to guarantee that this price all-time high will happen exactly in 2030 or any other year.