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.
It was facilitated using enterprise Lightning
infrastructure from Voltage, a Bitcoin payments and infrastructure provider
focused on institutional clients. Lightning is a second-layer network built on Bitcoin
that enables faster and cheaper payments by moving transactions off the base
blockchain.
Lightning is often viewed as experimental. It’s time to see it in production.We successfully sent $1,000,000 over the network.Here’s what that execution looked like.Big thanks to @krakenfx & @voltage_cloud pic.twitter.com/MoeBMDeRHV
— Secure Digital Markets (@SD_Markets) February 5, 2026
Pointing to Faster Settlement for Institutions
While it 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.
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. Voltage
said the pilot highlights how Lightning has matured beyond experimental use
cases.
SDM operates an institutional trading and lending desk
offering execution through graphical interfaces, APIs, and request-for-quote
systems. The firm said integrating Lightning infrastructure
allows it to explore faster settlement options for clients without relying
solely on traditional payment rails.
This article was written by Jared Kirui at www.financemagnates.com.
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