In a recent X conversation, Blockstream CEO Adam Back weighed in on one of Bitcoin’s biggest mysteries: the whereabouts of Bitcoin creator Satoshi Nakamoto.
After overseeing the Bitcoin project through its early days, Satoshi abruptly stepped away from the public eye. On April 23, 2011, he sent a final known email to early Bitcoin developer Mike Hearn. In his message, the Bitcoin creator stated that he had “moved on to other things” and assured Hearn that the project was “in good hands.” Satoshi has not been heard from since.
There have been various speculations about Satoshi’s whereabouts, with some presuming the Bitcoin creator may be dead. Back referred to such assumptions about whether the Bitcoin creator was alive or dead as “pure speculation.”
also what makes you think he’s dead?
unlikely, but possible, either way pure speculation…— Adam Back (@adam3us) July 18, 2026
Back was responding to an X user who stated that if “Satoshi was still alive he would be pro-BIP 110.” This he answered in the negative, further asking: “What makes you think he’s dead?” He went on to say that this was “unlikely, but possible,” as there is no evidence either way. “Either way, pure speculation,” Back stated.
The Bitcoin Improvement Proposal (BIP)-110, which would temporarily restrict non-financial data on the Bitcoin blockchain, has sparked division in the Bitcoin community. The controversial proposal faces an early August deadline with miner support very low.
Satoshi mystery remains
Satoshi vanished from public communication about 15 years ago; also, no coins definitively attributed to the Bitcoin creator have moved since the early days. There have been countless theories about the Bitcoin creator and the fate of his Bitcoin holdings.
A theory suggests that Satoshi Nakamoto may have passed away during the 15 years since his addresses went dormant. Another suggests that he could have destroyed the private keys to his Bitcoin holdings, while yet another suggests that he may still hold them.
The identity of the Bitcoin creator also remains unknown, with Back named as a potential candidate, being one of the first two people alongside Hal Finney to receive an email from Satoshi Nakamoto. His work on Hashcash, a proof-of-work system developed in 1997, led some to believe that he could have been the mind behind Bitcoin’s proof-of-work mechanism.
