Secure Digital Markets (SDM) has completed a $1 million Bitcoin transaction over the Lightning Network in a pilot settlement with cryptocurrency exchange Kraken, marking what the firms say is the largest publicly reported Lightning payment to date.
The transaction, executed on Jan. 28 and valued at $1 million at the time, reportedly settled nearly instantly and with minimal fees.
- Will 2026 Be The Year Ethereum Outperforms Bitcoin?
- Liquidity, Clearer Regulations and More: Crypto Executives Are Bullish for Bitcoin in 2026
- This Bitcoin Prediction From Citi Targets $143,000 in a Year — Here’s What Has to Go Right
According to the official announcement, it was facilitated using enterprise Lightning infrastructure from Voltage, a Bitcoin payments and infrastructure provider focused on institutional clients.
Pointing to Faster Settlement for Institutions
“We have moved past the era of questioning Bitcoin's institutional capacity. Now, the only remaining variable is how quickly lagging institutions will abandon legacy systems,” said Mostafa Al-Mashita, Co-Founder and Director of Sales & Trading at SDM.
While the network has been widely used for small consumer payments , its suitability for large institutional settlements has remained an open question.
Traditional Bitcoin transactions can take minutes or longer to confirm and are subject to fluctuating fees, factors that complicate treasury operations and inter-institution settlements.
SDM said the pilot demonstrated that Lightning could support use cases such as internal treasury movements, large-value settlements, and transfers between trading venues without the delays associated with on-chain settlement.
Read more: Bitcoin Hit $74K and This BTC Price Prediction Suggests It Will Now Rebound to ATH
Kraken, one of the longest-operating crypto exchanges, has supported Lightning for retail payments for several years. The firm said the transaction reflects growing demand from institutional clients for faster settlement options.
Cutting Reliance on Legacy Payment Rails
The transaction relied on Voltage’s managed Lightning infrastructure, which provides liquidity management, node uptime, and operational guarantees designed to meet institutional requirements.
Lightning is a second-layer network built on Bitcoin that enables faster and cheaper payments by moving transactions off the base blockchain.
The network is getting a boost giant fintech firms. Last year, Revolut announced a collaboration with Lightspark to enable payments over the Bitcoin-based Lightning Network, aiming to streamline crypto transfers for users in the UK and selected European markets.
Lightspark, founded by former PayPal executive David Marcus, positions itself as a gateway to the “Money Grid,” a decentralized network for instant global payments. Through this infrastructure, Revolut aims to upgrade its crypto services by enabling smoother Bitcoin transfers.