Replying to Avatar softsimon

ARK is a new type of Layer 2 protocol with the UX of E-Cash but non-custodial. When it was announced first in 2023 it was clear that it would require a soft fork like CTV to even work though. Now 2 years later it's here live on Bitcoin mainnet, without the need for a new soft fork at all.

And with the interoperability with Lightning it will create some interesting wallets and new use cases.
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elsat 8mo ago

Wen arkzaps? 👀

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Sjors Provoost 8mo ago

Zarps?

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bordalix 8mo ago

That will be a challenge: since VTXOs are UTXOs, they are bound by the dust limit.

In other words, you will not be able to unilaterally exit a VTXO with value less than the dust limit, so it would not be trustless.

Of course you could receive several low value VTXOs and trust the server it will allow you to swap all of them later for a bigger VTXO.

It's not 100% trustless, but you only need to trust the server for very low amounts. It could work.

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elsat 8mo ago

This is how most LN setups and e-cash work.

For small amounts it’s not any different than current solutions.