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With the intention of trying to help make Bitcoin transactions more economical and inspired by the implementation of Peach made by Czino GroupHug has been born. A transaction batching system that allows to share between users the fees of a transaction without the need of coordination between users. This post explains what GroupHug is, how it works technically and what advantages and disadvantages it has. The Bitcoin Grouphug GroupHug is a transaction batching solution that allows to create joint transactions between users similar to a coinjoin without interaction or coordination between users, but with some limitations....

Let’s suppose that Bob and Alice share a flat and want to buy a television worth 2 bitcoins, paying half each. To do so, Bob could send 1 bitcoin to Alice so that she pays for the TV, but since the network fees are quite high, they decide to create a joint transaction with two inputs, one from Alice and one from Bob. 💡 The practical examples in the post are made in testnet....