Online forums are integral to the Bitcoin origin story, where Satoshi Nakamoto and early contributors collaborated to discuss and create a disruptive financial system from scratch. One of the oldest Bitcoin forums — bitcointalk.org — still preserves historical discussions around creating the Bitcoin (BTC) logo and the payment system.

A curious member of the bitcointalk.org forum recently sought to identify Bitcoin miners from the early days. To their surprise, an anonymous member shared a signature dating back to January 2009, just a week after Bitcoin came into existence.

“Maybe OP is inviting Satoshi?” questioned another member after confirming the legitimacy of “the oldest signature” found to date. Adding to the mystery, the signature was posted by a newly created account on Nov. 26, 2022, under the pseudonym of OneSignature.