BLAKFRAME LTD Technical Architecture Company Number: 16726125 (England and Wales) Document Classification: Public Technical Disclosure Date: April 2026 1. Overview BLAKFRAME LTD is a systems engineering firm registered in England and Wales. The firm builds custom, bare-metal no_std Rust microkernels for hard real-time data ingestion and deterministic scheduling. The architecture executes directly on dedicated hardware, bypassing the latency and scheduling overhead introduced by standard operating systems and hypervisor layers. This document describes the technical architecture, memory safety model, verification methodology, and data custodianship framework. 2. Language and Memory Safety All production systems are implemented in Rust targeting the no_std environment. This eliminates the standard library and its associated runtime allocator, heap dependencies, and OS abstractions. Execution operates directly on bare metal with no garbage collector, no runtime thread scheduler, and no implicit heap allocation. Rust provides compile-time enforcement of the following invariants: Ownership: Each value has exactly one owner. When the owner goes out of scope, the value is deallocated. This eliminates use-after-free and double-free vulnerability classes at the type system level. Borrowing: At any point in time, a value may have either one mutable reference or any number of immutable references, but not both. This eliminates data races at compile time. Lifetimes: The compiler tracks the valid scope of every reference, rejecting programs where a reference could outlive the data it points to. This eliminates dangling pointer access without runtime overhead. Send and Sync: Types that can be safely transferred or shared across threads must implement the corresponding compiler-enforced traits. Programs that violate these constraints do not compile. These guarantees eliminate the vulnerability classes that account for the majority of severe security defects in systems software, as identified by NIST and CISA in their recommendations for critical infrastructure software. 3. Core Architecture 3.1 Bare-Metal Service Design System components are compiled to native machine code and deployed directly onto hardened kernels. There is no container orchestration layer, no interpreted runtime, and no virtual machine abstraction between the application logic and the hardware. The architectural split is strict: deterministic CPU scheduling and data ingestion run at the bare-metal layer. Structured datasets are delivered to downstream processing pipelines — whether classical HPC clusters, quantum-inspired optimisation hardware, or photonic networks — without memory leaks, scheduling jitter, or thermodynamic waste introduced by hypervisor overhead. 3.2 Deterministic Execution All state transitions are defined explicitly. When the system encounters an input or edge case not covered by the specification, it terminates the affected process immediately rather than proceeding with undefined behaviour. Undefined behaviour is treated as a fatal condition, not a recoverable state. All integer arithmetic is checked for overflow. Floating-point operations are avoided in consensus-critical paths where bitwise reproducibility is required. 3.3 Concurrency Model Concurrent operations are coordinated through lock-free data structures using atomic compare-and-swap operations. Shared state between worker processes is managed via memory-mapped files with cache-line-aligned structures to prevent false sharing across CPU cores. If a worker process terminates, its signals decay below the operational threshold naturally, allowing other workers to assume responsibility without requiring a central coordination service to detect and reassign the failed task. 4. Formal Verification Consensus-critical components undergo formal verification to prove functional correctness against their specification. The verification toolchain applies: Creusot: A deductive verification framework for Rust that translates safe Rust code into an intermediate verification language, enabling proof of the absence of panics, arithmetic overflows, and specification violations in production code paths. Z3 SMT Solver: A Satisfiability Modulo Theories solver used to exhaustively evaluate reachable states in protocol implementations, identifying potential consensus divergence or constraint violations that cannot be detected by testing alone. State transitions are subject to deontic validation: operations are classified as obligatory, permitted, or prohibited based on formally defined constraints. This ensures the system is structurally incapable of entering states that violate the specification, not merely that it produces correct outputs for tested inputs. For cryptographic protocol implementations, this includes verification that domain separation tags are unique across operations, that transcript constructions bind all relevant participant identifiers, and that serialization routines reject inputs exceeding defined bounds rather than processing them with truncation. 5. Data Custodianship BLAKFRAME operates as a technical custodian of client data, not as an owner or processor with visibility over payload contents. The system architecture enforces this distinction at the protocol level: All data in transit is encrypted using the client's keys before entering the distribution network. The infrastructure handles encrypted byte streams without the ability to inspect, modify, or derive information from the payload. Any client can extract their complete dataset from the system at any time, in its original format, without requiring cooperation from BLAKFRAME beyond standard export tooling. There is no proprietary encoding, vendor-specific format, or contractual restriction on data portability. 6. Security Research The firm maintains an active vulnerability research practice focused on the security of open-source cryptographic infrastructure. Research methodology applies formal verification tooling to identify implementation-level defects in Rust-based cryptographic libraries, with focus on: - Transcript construction integrity in threshold signature schemes - Resource exhaustion in serialization and deserialization routines - Consensus divergence between protocol specification and implementation - Unsafe unwrap usage in critical execution paths Coordinated disclosure is conducted directly with protocol maintainers and established security channels. 7. Asset Classification All source code, documentation, tooling, and datasets produced by BLAKFRAME are classified into three access tiers: Restricted: Core algorithms, proprietary libraries, and internal datasets. Protected as trade secrets under the laws of England and Wales. Not disclosed externally. Controlled: Interface specifications and integration documentation provided under non-disclosure agreements to partners and clients. Public: Corporate disclosures, legal filings, and technical specification documents such as this one. All engineering artifacts of significance are hashed using SHA3-512 and archived to write-once storage to provide a cryptographic witness chain for the provenance of intellectual property and the integrity of disclosed vulnerability reports. 8. Contact BLAKFRAME LTD 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ United Kingdom Email: hello@blakframe.com Web: https://blakframe.com