Norwegian Block Exchange AS

Regulatory Filings • Dec 18, 2025

NBX and BlockSign Announce Strategic Cooperation to Deliver Institutional-Grade Digital Asset Governance and Custody Solution

NBX and BlockSign Announce Strategic Cooperation to Deliver Institutional-Grade Digital Asset Governance and Custody Solution

OSLO/DÜSSELDORF – 18 December 2025 – Norwegian Block Exchange ASA (NBX) and Docufi3d UG, trading as BlockSign, today announced the signing of a Memorandum of Understanding (MoU) to explore a strategic cooperation aimed at creating a significantly more cost-effective institutional-grade solution for digital asset treasury management.

The intended cooperation seeks to combine BlockSign’s platform for policy-driven governance, multi-party approvals, and operations with NBX’s regulated service capabilities, including institutional custody, fiat on-/off-ramping, and stablecoin-related services.

This strategic alignment is designed to address the market need for professional governance in the digital asset space, allowing organizations to choose between a non-custodial operating model and an optional third-party custody model powered by NBX. A core objective is the creation of audit-ready reporting outputs that support internal controls, oversight, and compliance, starting with an initial focus on Cardano- and Bitcoin-related treasury workflows.

Tim Brückmann, Founder & COO of BlockSign.io stated: "This intended partnership represents a powerful synergy. BlockSign’s strength is in policy enforcement, workflow orchestration, and creating an undeniable audit trail. Coupling this with NBX’s regulated infrastructure provides a complete, compliant, and robust solution for any regulated business or institution managing digital assets."

The Parties intend to pursue a fast execution approach, targeting an initial pilot of the integrated solution as early as Q1 2026, subject to compliance approvals and the execution of Definitive Agreements.

About Norwegian Block Exchange (NBX)

Norwegian Block Exchange ASA (NBX) operates services in the digital asset domain, providing regulated custody and transaction services subject to applicable laws and regulatory requirements.

About BlockSign (Docufi3d UG)

docufi3d UG is the developer behind BlockSign, a German digital trust and asset infrastructure provider. The company focuses on two main products:

BlockSign eSign (eSignature Platform): An enterprise-grade solution for electronic signatures and document workflows. It supports eIDAS-compliant signatures (including qualified electronic signatures via QTSP partners), provides full audit trails and timestamps, and offers role-based access control and GDPR-compliant handling of documents. It is designed for regulated organisations, family offices and SMEs.

BlockSign Asset (Digital Asset Operation Platform): A Digital Asset Operation Platform for Cardano, Bitcoin, Midnight and EVM that brings institutional governance to crypto holdings. Depending on the client’s preferences, assets can be managed either via non-custodial wallets or via NBX as an integrated third-party custodial partner. Features include multi-user and multi-signature wallets, role-, policy- and limit-based approvals, structured workflows, and audit-ready reporting, as well as controlled access to DeFi use cases such as lending, staking and liquidity provision under clear compliance and risk parameters.