Prime Brokerage Services

BlockFills provides comprehensive prime brokerage services for institutional digital asset clients, combining sophisticated OTC execution, financing, and professional settlement infrastructure.

OTC Trading & Execution

Institutional clients receive impeccable execution through industry-leading GUIs or FIX/WebSocket API connectivity. Trade via chat for personalized service, through Vision Trader's intuitive front-end GUI, or integrate directly via API for automated trading workflows. The OTC desk supports comprehensive spot trading across major digital assets with competitive pricing and deep liquidity pools, as well as voice dealing for complex trades requiring human interaction.

Credit & Financing Services

BlockFills operates one of the most active institutional lending and borrowing desks in the digital asset industry, offering both open-term and fixed-term lending products with flexible loan-to-value (LTV) ratios tailored to client needs and risk profiles. Support for various collateral types including BTC, ETH, and alternative cryptocurrencies, with the ability to borrow USD, stablecoins, or other digital assets. Leverage provisioned for qualified participants based on creditworthiness assessment and collateral arrangements.

Clearing & Settlement

Post-trade settlement services ensure efficient clearing and settlement of trades with integration to leading custody providers including Fireblocks, Zodia Custody, and Fordefi for secure asset transfer. Professional-grade settlement infrastructure ensures secure and efficient trade completion with T+0 settlement capabilities for time-sensitive operational needs.

Professional Service

The desk operates as an efficient counterparty capable of handling size with streamlined closing and settlement processes that minimize operational friction. Generous and competitive terms reflecting BlockFills' institutional focus and strong counterparty relationships. Dedicated support throughout the trading and settlement lifecycle with comprehensive risk management frameworks and real-time monitoring of exposures and collateral requirements.