When a payment app tells you a transfer is complete, you start making decisions. You hand over whatever you've sold, spend the money you've received, or close the app and get on with your day. That little confirmation you get is enough for you to stop thinking about whether the transaction worked.

Crypto companies want to offer that reassurance almost instantly, even when the blockchain underneath still needs time to finish settling the payment. One way to do it is to have an operator promise the result early and put money behind that promise.

Puffer, a company building transaction infrastructure for Ethereum, is working on a system like this. On Sept. 22, it announced that Google Cloud would operate a gateway , receiving transactions and guaranteeing their results before settlement. Puffer's UniFi network would be the first to use it.

Both UniFi and Puffer Preconf, the service issuing these guarantees, were still running in a testing environment as of Sept. 23, CEO Amir Forouzani told CryptoSlate. Their performance with customers putting real money through them still has to be established.

But the idea gets at something familiar to anyone who uses a financial app. When the screen tells you the money is ready, you expect to be able to use it. Making that happen sooner means deciding who can be trusted to give the go-ahead and who takes responsibility if they're wrong.

The Ethereum network relies on many computers agreeing on a shared record of transactions. Its base layer has 12-second slots for proposing blocks , the batches in which transactions are recorded. Getting into one of those blocks is a step toward completion, while the stronger confirmation known as finality usually takes minutes. Reversing a finalized record would require a severe breakdown of the network's security, with enormous financial penalties.

That gives apps a decision to make about how long to wait. Many run on additional networks called rollups, which process transactions separately and send information to Ethereum for settlement. These networks can give users early confirmations from the operator arranging their transactions , allowing the app to respond while Ethereum's settlement process continues.

Puffer wants to put explicit financial backing behind an early promise about the transaction's result. To see the appeal, imagine selling some crypto because the amount offered is enough to pay a bill. You want to know how much you'll receive and when you can use it, especially if the price is moving while you wait.