Ark in its essence
summary
Defines Ark as on‑chain anchored round transaction with a taproot tree of pre‑signed leaf spends that create ephemeral VTXOs which expire after a fixed window (example: five blocks). Each VTXO has two paths — a cooperative key spend for normal transfers and a unilateral script spend for emergency exits — users refresh into any future round before expiry, multiple independent arcs coexist, and VTXOs can atomic‑swap with Lightning; CTV would reduce liveness needs.
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chapters (7)
- 0:00Introduction to ARC
- 1:24The round transaction
- 3:43The timeout tree
- 5:53Spending and exits
- 9:13Lifecycle of funds
- 10:34Multiple ARC instances
- 12:26Q&A and closing thoughts
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