Quantum Blockchain Technologies Plc – Update following Nashville Bitcoin Conference

4 February 2026

Quantum Blockchain Technologies Plc

(«QBT» or «the Company»)

General Update following Nashville Bitcoin Conference

Quantum Blockchain Technologies plc (AIM: QBT), the AIM-listed investment
company, reports on developments following its attendance at the Nashville
Energy & Mining Summit (NEMS26) at Bitcoin Park on 22nd and 23rd January 2026.

The gathering saw key representatives of the Bitcoin industry attending as
participants, allowing QBT’s management team to engage with those ASIC
manufacturers which have signed NDAs with the Company. These discussions were
focused on the timing for the delivery of both hardware and software from these
potential customers and commercial partners. It should be noted that partial
access to source code has already been granted to the Company.

The Company also held in-depth discussions with other key Bitcoin industry
players who were present. These meetings were made possible as QBT is now being
perceived and recognised by the industry as a forerunner in the use of AI
technology being applied to SHA-256 optimisation, i.e., the core algorithm for
Bitcoin mining.

During the same event, the 256 Foundation, whose stated mission is to «Dismantle
the proprietary mining empire to make Bitcoin and freedom technology accessible
to anyone» presented a working `open source’ real-time mining system, using
three EmberOne hashing boards, comprising 36 ASICs in total. This launch
represented the first implementation of a Bitcoin-mining stack, i.e., a complete
open software and hardware publicly available design made from the following
open-source components:

· Hashing board (EmberOne),
· Control board(Libre Board),
· Firmware (Mujina), and a
· Mining Pool (HydraPool)

This is a significant milestone for the Bitcoin industry as it finally opens
access for any system designer to assemble a complete mining rig, using an open
-source framework which is readily accessible. This differs radically from the
current industrial model of existing Bitcoin mining systems which comprises of a
closed `black-box’ hardware / software, mainly to protect the products of the
rig manufacturers and which has historically delayed the development of the
sector, due to the need to reverse engineer existing chips or, by needing to
develop an entire hardware / software Bitcoin mining system.

The Company, through its US consultants, maintains excellent relations with key
256 Foundation members.

QBT is, therefore, allocating part of its existing resources to master all
elements of the 256 Foundation Bitcoin-mining stack, in order to quickly
implement its Methods onto this breakthrough environment, when new mining rigs
are launched by system integrators later this year.

Francesco Gardin, CEO and Executive Chairman of QBT, commented, «We are now
entering our fourth year of attending US Bitcoin mining events. Bitcoin Park,
which we have attended since 2024, provides QBT with the necessary visibility in
the sector to all the most important players which represent QBT’s potential
future partners and clients.

«The central role played by the US Bitcoin community in the development of this
growing crypto ecosystem is unique, hence our constant presence at US-based
events like this one.

«QBT’s adoption of the 265 Foundation Bitcoin mining stack as one of the
reference development environments for its three Methods adds an additional
target platform totally independent from specific manufacturers. While we will
continue to work with those ASIC designers and Bitcoin miners in order to
develop a collaborative partnership for our Methods, we welcome the 256
Foundation’s open-source attitude as fundamental towards the development of much
needed standards for Bitcoin mining-rig development.»

For further information please contact:

Quantum Blockchain Technologies Plc+39 335 296573

Francesco Gardin, CEO and Executive Chairman

SP Angel Corporate Finance(Nominated Adviser & Broker)+44 (0) 20 3470 0470

Jeff Keating

Leander(Financial PR)+44 (0) 7795 168 157

Christian Taylor-Wilkinson

About Quantum Blockchain Technologies Plc

QBT (AIM: QBT) is a London Stock Exchange AIM listed Research & Development and
investing company focused on an intensive R&D programme to disrupt the
Blockchain Technologies sector which includes, cryptocurrency mining and other
advanced blockchain applications. The primary goal of the R&D programme is to
develop Bitcoin mining tools and techniques, via its technology-driven approach,
which the Company believes will significantly outperform existing market
practices.

Glossary of Terms

ASIC: An Application-Specific Integrated Circuit is an integrated circuit chip
customized for a particular use, rather than intended for general-purpose use.
ASIC chips are typically fabricated using metal-oxide semiconductor (MOS)
technology, as MOS integrated circuit chips.

SHA-256: Secure Hashing Algorithm (SHA)-256 is the hash function and mining
algorithm of the Bitcoin protocol, referring to the cryptographic hash function
that outputs a 256 bits long value.

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