Paying rent to a friend on Mars? It may sound like science fiction, but researchers claim the technology is practically ready. A new concept called Proof-of-Transit (PoTT) could make Bitcoin the first currency to function not only on Earth but across planets.

How It Would Work Tech entrepreneur Jose E. Puente and his colleague Carlos Puente outlined a mechanism where Bitcoin transactions would travel through ground antennas, satellites, and even lunar relays before reaching their destination on Mars. At each stop, the transaction would receive a digital “stamp” – much like a passport at border crossings – creating a transparent record of its journey all the way to the Red Planet. According to Puente, the technology is essentially ready. Once a stable connection between Earth and Mars exists, PoTT could handle Bitcoin transfers in as little as three minutes (and up to 22 minutes in worst-case scenarios).

Challenges and Solutions One obstacle is the two-week Mars blackout, which occurs every 26 months when the planet passes behind the Sun. Puente suggests a fix: relay satellites orbiting the Sun to maintain the signal during outages. He describes PoTT as an extension of Bitcoin’s classic timestamping – only expanded beyond Earth.

Bitcoin Has Already Reached Space 🌌 PoTT isn’t the first attempt to link Bitcoin with space: 2018 – Blockstream broadcast Bitcoin through five satellites.2020 – Spacechain completed the first Bitcoin transaction from the International Space Station (ISS). On Mars, however, there would need to be someone – or something – to actually accept the payment. For now, only robotic landers and rovers operate there.

Musk and the Need for a Standard Martian Currency Elon Musk has made it clear he aims to establish a self-sustaining city on Mars by 2026. He also agrees that a standard, neutral currency will be necessary for an interplanetary civilization. According to Puente, the Lightning Network could address Musk’s concerns about Bitcoin’s 10-minute block times. With PoTT, people could enjoy local transaction speed combined with global settlement – even across planets.

Looking Ahead Puente believes Bitcoin is the most suitable candidate for an interplanetary currency: It is open, neutral, and independent.It can operate across planets within a star’s habitable zone.It ensures value transfer with accountability over vast distances. “Imagine it’s the year 2050,” Puente says. “You send money to a friend on Mars, watching your transaction hop from Earth, through the Moon, and finally to him. Bitcoin could become the first truly interplanetary currency.”

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