Ryan S.
Ryan S.
Security engineer | Blockchain Developer

Blog specialized on Security, Crypto and blockchain.

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2026 © Ryan S.

    MiCA Explained — Scope, Token Categories and Timeline of Regulation (EU) 2023/1114

    MiCA Explained — Scope, Token Categories and Timeline of Regulation (EU) 2023/1114

    What MiCA regulates, what it excludes, how it sorts a token into e-money token, asset-referenced token or other crypto-asset, and when each part applies.

    2026, Sep 17   —  19 minute read
    Issuing a Token Under MiCA — The Crypto-Asset White Paper and Its Exemptions (Title II)

    Issuing a Token Under MiCA — The Crypto-Asset White Paper and Its Exemptions (Title II)

    What Title II of MiCA asks of anyone offering or listing a token in the EU: white-paper content, notification, exemptions, 14-day withdrawal right, liability.

    2026, Sep 17   —  25 minute read
    Becoming a CASP Under MiCA — Authorisation, Capital and Custody Obligations (Title V)

    Becoming a CASP Under MiCA — Authorisation, Capital and Custody Obligations (Title V)

    Title V of MiCA for exchanges, custodians and brokers: who needs authorisation, capital classes, client-asset segregation, custody liability, rules per service.

    2026, Sep 17   —  29 minute read
    Building a Wallet for Aztec — What a MetaMask for a Private Chain Has to Contain

    Building a Wallet for Aztec — What a MetaMask for a Private Chain Has to Contain

    An Aztec wallet is a key store, a private-state database, a prover and a dApp gateway in one: components, build order, traps, and the wallets that exist today.

    2026, Sep 17   —  22 minute read
    Randomness on Aztec — One Oracle, Four Uses, and Why the Circuit Never Checks It

    Randomness on Aztec — One Oracle, Four Uses, and Why the Circuit Never Checks It

    Every random value in an Aztec contract comes from one unconstrained oracle backed by the client's CSPRNG: what it blinds, its limits, and why that is safe.

    2026, Sep 17   —  27 minute read
    Ephemeral Keys on Aztec — Encrypting to an Address, the Curve Behind It, and What a Quantum Computer Would Break

    Ephemeral Keys on Aztec — Encrypting to an Address, the Curve Behind It, and What a Quantum Computer Would Break

    Every private note on Aztec is encrypted with a one-shot ECDH key on Grumpkin: how it is made, what the ciphertext holds, and why it is not post-quantum.

    2026, Sep 17   —  25 minute read
    System Calls, Binary Images and Processes - How a Program Reaches the Kernel

    System Calls, Binary Images and Processes - How a Program Reaches the Kernel

    How a system call crosses from user space to the kernel (svc, syscall number, ABI registers), how compiler and linker build an ELF image, and what a process is.

    2026, Sep 16   —  22 minute read
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