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Seth For Privacy argues that open protocols like Spark and ARK foster fierce, user-centric competition because switching costs are low and they are interoperable via Lightning.
Albi Hub's experimental ARK backend from Sikin offers a cheaper alternative to Lightning for casual users making fewer than 100 payments, by eliminating the initial investment of opening a channel. Roland also highlighted ARK's open-source SDK for building Nostr Wallet Connect apps.
Stephen confirmed Sikin's Bark, an ARK implementation, went live on Bitcoin mainnet weeks ago, following a private beta and nearly a year on signet. He noted the protocol is trustless, allowing users to unilaterally exit on-chain if the server misbehaves.
Stephen emphasized that ARK provides an alternative for small-scale custodial wallets seeking non-custodial solutions due to legal difficulties, offering good UX without the complexities of channel management. Integrators include Noah Wallet, ROK, and a BitC Pay server plugin.
Stephen explained that ARK functions as a graduated wallet for small to medium balances, supporting direct on-chain off-boarding for savings. While exit costs may be high for tiny balances, the protocol prevents server theft, and higher balances make exits economically reasonable.
Stephen detailed ARK's liquidity management: the server temporarily fronts liquidity during VTXO refreshes. A progressive fee schedule incentivizes users to refresh closer to the 28-day expiry, minimizing server-fronted liquidity, with HTLC-based VTXOs expiring in 4-5 days.
David states covenants would make ARK trustless like Lightning and aid Lightning scaling via channel factories, but their adoption depends on core developer support.
ARK implementations Arkade and Bark launched on mainnet, solving original capital efficiency problems by introducing a 1-of-n trust model similar to Spark, making the layer-2 technology practical for Bitcoin payments.
The Ark protocol for Bitcoin payments launched on mainnet with two implementations: Arcade for DeFi covenants and Bark for trust-minimized payments.
Cathie Wood highlights that ARK Invest was founded to move beyond backward-looking, benchmark-driven investing and instead focus on forward-looking research into disruptive innovation, framing it as part of a "new creation."
Charlie Roberts highlights an ARK Invest model that estimates extending healthy life to 120 years for the current US population is worth $1.3 quadrillion, based on a $100,000 cost per quality-adjusted life-year.
ARK's modeling suggests SpaceX needs to build $8-10 billion in launchpads over the next few years to support Starship, a costly and complex construction challenge.
The ARK team highlights a core investor debate: bears focus on Starlink's declining revenue per user, while bulls see exponential topline growth potential from Starship-driven bandwidth expansion.
ARK's modeling suggests a single Starship launch could yield $1 billion in incremental bandwidth revenue, and launching at Falcon 9 cadence could reach $175 billion annually.
ARK's modeling shows a 44% cost decline for every cumulative doubling of gigabits per second capacity in space, creating a steep cost curve alongside high-paying bandwidth customers.
ARK sees SpaceX's construction and logistics advantage as a key moat in an era of trillion-dollar compute infrastructure deployment, allowing it to be the low-cost provider.
Ibis Wallet supports coin control, RBF/CPFP fee management, Tor, silent payments, hardware signing, multisig, and opt-in second layers like Spark, Liquid, and Ark.
ARK analysts project SpaceX could begin scaling space-based AI compute in 2028-2029, reaching tens of gigawatts per year in the early 2030s.
ARK Invest estimates the mega-cap tech companies will spend roughly $700 billion in capital expenditures this year, while holding a combined cloud backlog of approximately $1.5 trillion that remains unfulfilled.
ARK's house view is the best AI business is using compute to develop proprietary capabilities, not selling it. Nick contends Meta's AI superpower is enhancing its adtech and recommendation algorithms across its apps.