Eine Unterschrift. Zwei Rechtsräume. Warum kann eine QES in der EU gültig sein, aber in der Schweiz oder UK nicht denselben Rechtsstatus besitzen? Unser neuer Artikel erklärt eIDAS vs. ZertES, gesetzliche Grundlagen und reale Tests.

Wie bezahlen KI-Agenten und wer bestimmt ihre Befugnisse? Am Beispiel @Cardano zeigt BlockSign, wie Stablecoin-Zahlungen mit klaren Mandaten, Budgets und Freigaben funktionieren können. Denn ein Auftrag ist noch keine Zahlungsfreigabe.

Vertrauliche Blockchain-Transaktionen, klare Kontrollen: Was Artikel 79 der EU-Geldwäscheverordnung regelt, wie Zero-Knowledge-Proofs helfen und wie BlockSign die Umsetzung unterstützt. #DigitalAssets #Privacy

CIP-113 is moving from specification to operations. And that’s where things get interesting. At BlockSign, we have now successfully executed a governed programmable-token lifecycle on Cardano Preview: → Registration + initial mint → Separate mint → Wallet-to-wallet transfer → Burn All confirmed on-chain. But making a transaction work is only half the challenge. Institutional operations need to answer different questions: - Who is allowed to initiate it? - Who must approve it? - What exactly was approved? - Can the transaction change after approval? - Who can execute it? - And can all of this be proven afterwards? That’s why BlockSign separates: Intent → Build → Validate → Approve → Execute → Confirm → Evidence ❗️Changing the transaction means changing the approval.❗️ This week, CIP-113 builders are meeting to discuss improvements to the emerging infrastructure. Our testing is already producing concrete operational learnings around governance, transaction flows and the requirements for using programmable tokens in real-world environments. The next step is bigger than minting tokens. It’s making programmable assets operationally ready for institutions. @planetmaaz @michaeldotada @Cardano

Shamir or FROST? The right architecture depends on how you use your assets. Over the last posts, we looked at two approaches to distributed key management: Shamir Secret Sharing and FROST threshold signatures. Both can remove dependency on a single keyholder. But they solve different operational problems. Shamir is fundamentally simple to understand: split a secret into several shares and define a threshold — for example, 3-of-5. When recovery is required, enough shares are combined and the original secret can be reconstructed. That makes Shamir particularly interesting when the main objective is secure backup and recovery. A single asset owner can even distribute their shares across separate secure locations. The trade-off comes when the key needs to be used. Once the threshold is reached, the complete secret can exist again during reconstruction. The reconstruction environment therefore becomes part of the security model. FROST approaches everyday operation differently. Again, participants hold shares of a common signing key and a threshold can be defined. But during normal signing, the required participants cooperate to create signature shares. Those are combined into one valid Schnorr signature — without reconstructing the complete signing key. That makes FROST particularly interesting when distributed control is required not only for recovery, but for regular transaction signing. So which is better? There is no universal answer. For an individual investor or single high-value trader, Shamir can offer an understandable way to distribute recovery material and avoid keeping one complete secret in one location. For a family office or small organization, the decision increasingly depends on operational requirements. Is distributed control primarily needed for disaster recovery, or should several people participate every time important assets are moved? For SMEs, institutions and professional asset operations, FROST can become particularly interesting where multiple authorized participants should jointly sign transactions without reconstructing the complete signing key during normal operation. And there are more questions than security alone: - How easy is the initial setup? - How does recovery work? - How convenient is everyday signing? - What happens when a participant leaves? - How are shares replaced or refreshed? - What happens if participants are unavailable? - Which blockchains and signature schemes are supported? - And how does the cryptographic threshold connect to the organization’s actual governance? That last question is crucial. A 3-of-5 cryptographic threshold does not automatically tell you who is allowed to initiate a €5 million transaction, which assets they may move, which addresses are permitted or what transaction limits apply. That is governance. With BlockSign, organizations can choose a key-management architecture that fits their operational and security requirements and combine it with roles, approvals, policies, transaction limits and audit evidence. Shamir distributes the secret. FROST distributes the signing process. BlockSign adds the governance around it. Not sure which architecture fits your digital asset operations? Talk to us.