[Mistletoe]

Of course there is, there are tons of cryptocurrencies that can do this but everyone here hates crypto and throws the baby out with the bathwater and won’t stop parroting “SCAM!” every time they hear the word. It’s too expensive to use on-chain transactions on things like Bitcoin or Ethereum but there are other coins.

https://bitinfocharts.com/comparison/transactionfees-btc-eth...

You could also use Lightning Network on Bitcoin or any of the Layer 2s on Ethereum like Arbitrum or Optimism. Fees are in the cents range.

https://l2fees.info/

[johannes1234321]

Pointing to my comment elsewhere on this thread: https://news.ycombinator.com/item?id=39279246

[Mistletoe]

Some blockchains have private transactions and very good at it indeed.

https://bitinfocharts.com/comparison/transactionfees-btc-xmr...

Monero has fees of six cents it looks like and a novel and private way of performing transactions.

https://en.wikipedia.org/wiki/Monero

https://en.wikipedia.org/wiki/Ring_signature

[wbobeirne]

Layer 2s such as Bitcoin's lightning network do not use a public ledger for their transactions. The only thing public is the transaction that opens a payment channel, everything after that happens as peer to peer messaging across the network.