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Wavespace, a Bitcoin neobank serving the Eurozone, has announced MiCA compliance of its ‘self-custodial’ debit card. The young fintech company is at the cutting edge of Bitcoin payments technology in Europe, with support for the Lightning Network, and auto DCA to self-custody.
Debit cards in the Bitcoin and broader crypto industry have traditionally worked by preloading custodial accounts with bitcoin or stablecoins. The process of preloading was usually on-chain, taking time to settle and requiring manual input from the user to send from self-custody wallets or cold storage. If the preloaded balance ran out on the card, spending would not be possible.
Wavespace’s self-custody debit card solves these problems with a novel Bitcoin technology called Nostr Wallet Connect, or NWC for short. This protocol, documented in NIP-47, allows users to connect a service like this debit card to a self-hosted Lightning node. The user sets a minimum balance, say $200 and every time the user spends from the card via the VISA network, Wavespace pulls sats from the user’s self-custodial wallet to top up the card. This process minimizes custodial exchange risk while maximizing user exposure to the asset and automating away the friction to spend bitcoin.
NWC is a technology developed by the Nostr ecosystem, a high-tech niche within the Bitcoin industry that is branching out into social media and other communication protocols.
The Wavespace Neobank
As a high-tech neobank, Wavespace gives users a personal IBAN account, which they can send fiat to, to purchase Bitcoin. Their automated DCA services can be set to withdraw bitcoin upon purchase to a selected Bitcoin address.
The company is MiCA compliant, making it one of the few surviving Bitcoin exchanges in Europe, as the complicated crypto regulations came online.
On the privacy front, the deep Lightning network integration of Wavespace lets user get access to the banking system in a clear and compliant manner, without exposing all their payment data on the Bitcoin blockchain. Since Lightning payments are off-chain, there is no single public record that leaks user data; instead, transactions move through payment channels between various user services, leaving no obvious public trace. The result is a growing compromise between the high privacy, cypherpunk values that created the Bitcoin and crypto industry, while also unlocking access to the legacy financial system, and compliant integration with regulation-heavy areas like Europe.
In an interview with Bitcoin Magazine, Eivydas Račkauskas, Chief Orange Pill Giver at Wavespace, said that 70% of the payments made on the platform use the Lightning Network and that the company is looking into the ARK protocol for further self-custody-oriented payments integrations. He also revealed that the company is integrated with Lightspark and is ready for an expansion into the USA, though he did not reveal further details on the matter.
Wavespace has been almost entirely bootstrapped and self-funded, according to Račkauskas, except for an early Relai angel investor who supported them in 2025. They are currently in the middle of another fundraising round.
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