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Who is Sepior?
Sepior is a cryptographic software company that provides multiparty computation (MPC)-based key management and transaction signing solutions for digital asset and other high-value cryptographic workloads.
- MPC-based key management and transaction signing for digital asset platforms (cryptographic security)
- Software-only threshold cryptography for custody, wallets, and institutional trading workflows (cryptographic security)
- Integration capabilities for exchanges, custodians, banks, and fintechs handling blockchain-based assets (financial infrastructure security)
- APIs and SDKs for embedding MPC wallet and signing functions into existing platforms (developer tools)
- Deployment options for cloud, hybrid, and on-premises (on-prem) environments to align with enterprise security and regulatory requirements (security infrastructure)
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More About Sepior
Sepior focuses on cryptographic software that uses multiparty computation (MPC) to protect private keys and perform transaction signing without ever assembling a full key in a single location. Its technology is used by institutional and enterprise customers that operate digital asset exchanges, custodial services, banking platforms, and other infrastructure that requires strong protection for blockchain-related keys and signing processes.
The company’s offerings belong in the category of MPC key management and digital asset security software (cryptographic security). Instead of storing private keys in a single Hardware Security Module (HSM) or wallet, Sepior’s MPC approach splits key material into shares held by multiple parties or systems. Transaction signing is performed collaboratively using threshold cryptography, such that a defined subset of key shares can authorize a transaction without reconstructing the full key. This architecture is intended to reduce single points of compromise and align with enterprise security policies.
Sepior exposes its capabilities through APIs and SDKs (developer tools) that allow customers to embed MPC-based signing, key generation, and key backup into trading platforms, custodial systems, and wallet infrastructure. These integration options are relevant for institutions that need to support automated trading, multi-user approval workflows, or segregation of duties across operations, compliance, and security teams. The software is designed to operate in cloud, hybrid, or on-prem environments, enabling deployment in accordance with regulatory, jurisdictional, or internal risk constraints.
From an architectural standpoint, Sepior’s technology is associated with threshold cryptography, secure multiparty computation protocols, and standard public key cryptography primitives for blockchain networks. Its solutions can be mapped to enterprise categories such as digital asset custody infrastructure, MPC wallets, and key management for blockchain and Web3 applications (security infrastructure). Compared with traditional single-key or hardware-centric approaches, MPC-based systems like those offered by Sepior emphasize distributed control over signing authority, granular policy enforcement, and support for institutional-grade governance models.
In an enterprise directory context, Sepior fits within cryptographic key management, digital asset security, and MPC wallet software. Its products and services are relevant to organizations that need to secure private keys used for cryptocurrency trading, custody, treasury operations, tokenization platforms, and other blockchain-integrated financial services, while maintaining compatibility with audit, compliance, and operational resilience requirements.
Our description of Sepior. Updated December 2025.
