For sure. I’m not opposed to people innovating. I am however, skeptical
People can build whatever they want. Bitcoin doesn't care.
If people want to use this BTC -> xBTC -> Cardano -> xBTC -> BTC thing, they should have the freedom to do so.
I don't, but hey, you do you. All that complexity doesn't stop me from zapping sats around.
Also, here's a link to the article without trackers: https://news.bitcoin.com/bitcoinos-completes-first-bridgeless-cross-chain-btc-transfer-between-bitcoin-and-cardano/
Discussion
That article didn't explain the details of how it works, but a simple approach would be to encrypt the bitcoin privkey using the cardano pubkey (from person #1) & post it to the bitcoin blockchain.
Cardano person #1 then has the BTC privkey, can pass it to someone else and then they can move the coins.
I guess the ZK stuff is to prevent multiple people from having that BTC privkey. It'd be interesting to see the details on how they stop a race among the cardano users to move the coins. Presumably they achieve this...
You are correct. I’m interested to see how the Cardano users interact as well.