Samson Mow, chief strategy officer of blockchain technology company Blockstream who was on stage with Bukele said that the 'volcano bonds' - the new city will be powered with geothermal energy from a nearby volcano - will be U.S. dollar-denominated 10-year bonds and carry a coupon of 6.5%.

The bonds will be able to be traded 24/7 with other assets like stablecoins, according to a blogpost from Blockstream, Mow's company which plans to issue the bonds.