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Inside information under MiCAR
A decision to delay the public disclosure of inside information needs a record from the outset. That remains true whether the competent authority expects the reasons automatically after publication or asks for them later. This distinction connects two important features of the Markets in Crypto-Assets Regulation, or MiCAR: a common European framework for handling inside information, and national differences in how that framework is administered. Teams need to understand both.
Nina Siedler
6 days ago11 min read


What does it actually mean when DAAvern says that a disclosure is “provable”?
Every published disclosure creates three separate pieces of evidence: 1️⃣ A hash proving what was published. The relevant disclosure fields are serialised in a defined format and hashed using SHA-256. Not included is the publication time: the hash only proves what was said; not when. A disclosure-specific secret is added when generating the hash. The issuer retains it and can provide it, where full verification is required. 2️⃣ An independent timestamp proves when the hash ex
Nina Siedler
Sep 12 min read


“Not financial advice” is not a compliance concept: Why finfluencer risk starts before the post goes live
BaFin’s recent statement on finfluencers is being read mainly as a warning about advertising, conflicts of interest and consumer protection. Those issues matter. But from a market-abuse perspective, the more interesting question arises one step earlier: What information did the creator receive before publication? That question can fundamentally change the legal analysis. Imagine a crypto project is preparing a major announcement. A creator, ambassador or advisor receives an a
Nina Siedler
Aug 314 min read


Beware of fake job offers
A €500k job offer lands in your LinkedIn inbox. The company is real. The role fits. The recruiter is connected to people you know. So - would you take the call? 🔥 I now regularly receive LinkedIn messages about well-paid roles. Some are obviously dubious. Others are much better crafted: the role broadly fits my profile, the company exists, the compensation looks plausible, and the recruiter is connected to people from my own professional network. ⚠️ That is exactly what make
Nina Siedler
Aug 272 min read


A non-EU exchange is not a safe harbour for crypto insider dealing
Consider this scenario: A crypto-asset (e.g. Bitcoin) is admitted to trading on a German MiCAR-authorised platform. A person outside the EU receives precise, non-public information that, if published, would likely have a significant effect on the Bitcoin price. The person then trades on an exchange outside the EU. MiCAR does not confine its insider-dealing rules to EU residents or EU trading venues. Market-abuse rules are applied to acts by any person, to transactions regardl
Nina Siedler
Aug 53 min read


Did you do your inside information trigger-mapping exercise?
Avoid improvising under pressure - designing a disclosure process during an incident might force you to do exactly that. Therefore, before the first difficult case arises, institutions should know which events could become price-sensitive, who must escalate them, who assesses the information and who is authorised to disclose - or delay disclosure. That requires more than a legal policy. Security, legal, compliance, treasury, market operations and communications need a shared
Nina Siedler
Jul 291 min read


When does a cybersecurity incident become inside information?
A custody outage may trigger more than one regulatory process. Under DORA, it may have to be reported to the competent authority. Under MiCA, the same event may also constitute inside information - requiring public disclosure, trading restrictions, enhanced market surveillance or other market-abuse controls. The analysis becomes particularly complex where roles overlap: Some CASPs also issue their own tokens. Others may only hold price-sensitive information concerning third-p
Nina Siedler
Jul 211 min read


Finfluencer event by Bundesblock
The German Blockchain Association (Bundesblock) hosted its first dedicated event for crypto content creators yesterday: “No Financial Advice” – Crypto Content, MiCAR & the New Responsibilities of Creators.” Together with creators, influencers, founders, tax experts, and legal practitioners, we discussed how the regulatory landscape for crypto content is changing under MiCAR and related EU rules. Some of the legal questions are familiar: • Where does educational content end an
Nina Siedler
Jun 242 min read


From Blockchain to AI – and Back Again?
On 10 June 2026, I had the privilege of opening the 7th Blockchain Roundtable at the German Bundestag on behalf of the German Blockchain Association "Bundesblock". When we founded Bundesblock in 2017 with just 23 founding members, our inaugural meeting also took place in the Bundestag. Back then, blockchain was still considered a niche topic by many. Today, Bundesblock represents more than 130 members from industry and academia. Over the past years, the public debate has shif
Nina Siedler
Jun 112 min read


7th Blockchain Roundtable in the German Parliament
Next week, I will have the pleasure of welcoming participants to the 7th Blockchain Roundtable in the German Bundestag on behalf of Blockchain Bundesverband (Bundesblock). The title of the event is "AI & Blockchain: Building Blocks of Digital Sovereignty." It is a timely topic. As a lawyer, I spend much of my time discussing regulation. But regulation alone does not create digital sovereignty. Sovereignty requires infrastructure, standards, interoperability, trusted instituti
Nina Siedler
Jun 31 min read


Consider it a proof-of-wellness before a week full of proof-of-anything-else
Preparing for the Berlin Blockchain Week 2026 and the DARTE roundtable the right way 🧘🏻♀️ Join Marie Christin Rinke and me for a refreshing yoga & pilates session, some fresh air, and a moment of calm in Gleisdreieck Park - just across the street from w3.hub. The perfect way to start the day before diving into discussions on digital assets, crypto regulation, and taxation. After all, sometimes the best conference preparation is not another slide deck 😉. We'll stretch,
Nina Siedler
May 291 min read


The Dark Side of Web3
In my keynote about “Market Abuse in Web3” on the Nordic Blockchain Conference, I reminded on how much the conversation around insider dealing in crypto has matured - and how many blind spots still remain. For years, the industry mostly associated “insider trading” with the obvious headline cases: tipping relatives before a token listing or using privileged employer or customer data. These are the cases everyone immediately understands. What is far more interesting - and lega
Nina Siedler
May 262 min read
Missing feedback loop in the AML regime
One theme keeps coming up: A structural gap in the feedback loop between FIUs, law enforcement and obliged entities - this might quietly undermine AML effectiveness. Many of you know that I am currently preparing a Darte Session focused on how to make the Financial Action Task Force (FATF) AML regime more effective while also enhancing privacy protection for society at large. Talking to the private sector - financial institutions and CASPs - two pain points are raised again
Nina Siedler
May 73 min read


Crypto versus TradFi information channels
TradFi Inside Information needs to be communicated via regulated disclosure channels and OAMs under the Transparency Directive. In crypto markets, inside information may rather need to be disseminated through social media and web-based platforms „when they appear to be the media which are reasonably relied upon by the public“
Nina Siedler
Apr 172 min read


Stablecoins are no longer a crypto side story
Stablecoins:
For users: the question is where stablecoins can immediately improve treasury performance.
For issuers: the question is how to build compliant, scalable, and supervision-ready infrastructure across jurisdictions and beyond the EU.
Nina Siedler
Apr 162 min read


Comparison matrix: Art. 88 MiCAR vs. Art. 17 MAR, and Transparency Directive OAM framework
Comparison matrix: Art. 88 MiCAR vs. Art. 17 MAR, and Transparency Directive OAM framework
Nina Siedler
Apr 81 min read


Two summits - one topic? Real‑World Asset (RWA) Tokenisation
Real World Asset Tokenisation
Nina Siedler
Apr 12 min read


Introducing DAAvern, the global disclosure infrastructure for crypto asset service providers.
Over the past two years, the DARTE Series took us across more than 28 cities, from Brussels to Washington, Helsinki to Buenos Aires, convening regulators, lawyers, and industry leaders to tackle the hardest questions in crypto regulation. One question kept coming back: how are crypto asset service providers supposed to disclose insider information publicly, verifiably, and in a way that actually holds up legally? I am proud to announce that Mariana de la Roche (my partn
Nina Siedler
Mar 201 min read


Two Years of DARTE
25+ sessions. Hundreds of experts. One shared objective: legal clarity for digital assets. When we initiated the DARTE Series together with Mariana de la Roche Wills ( BlackVogel ), the idea was simple but ambitious: create a space where regulators, policymakers, industry leaders and legal experts could engage in serious, structured dialogue on digital asset regulation - beyond panel soundbites and conference noise. With the support of the European Commission (Joachim Sch
Nina Siedler
Mar 62 min read


Joint Interpretive Note on USD-Based EMTs in the EU
Multijurisdictional issuance of USD-based e-money tokens in the EU has hit a regulatory wall, and the answer is not more prohibitions. Co-authored withNordic Law and BlackVogel, our Joint Interpretive Note makes the case that supervisory authorities need to distinguish between risk assessment and legal constraint. The current frameworks can support these models. What's missing are shared operational standards that protect consumers without closing the door on a competitive Eu
Nina Siedler
Mar 31 min read
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