Power your own offering on Bitcoin-native rails. ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌
Blockstream
Custody & Treasury
Power your own digital-asset custody offering
Build client custody on the Blockstream Platform: HSM-based key security, customizable policy frameworks, and full auditability for regulated environments.
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A transaction passes through a policy engine that checks limits, roles, timing, and risk before signing in an HSM.
  
Policy enforced up to signing Lead
A policy engine checks every transaction against limits, roles, timing, and risk conditions before any signature, so there's no policy drift between what you configured and what actually executes.
  
Keys never leave the HSM
Private keys stay in cold storage under a zero-trust architecture; approved transactions sign in a secure, customer-controlled multi-approval environment.
  
Full auditability & segregation
Tamper-resistant audit logging and end-to-end traceability, with a multi-account architecture and on-chain verifiability to segregate by client.
Do you ever hold our clients' keys?
No. Keys stay in your HSM and signing is customer-controlled multi-approval; Blockstream provides the rails, you keep the authority.
Can we deploy inside our own perimeter?
Yes. Desktop, mobile, and SDK access, delivered turnkey or unbundled, deployed cloud, hybrid, or on-premises.
Offer custody your clients can trust.
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or just reply to this email and I’ll come straight back.
Satoshi · Enterprise, Blockstream
Blockstream Corporation Inc., 1055 Canada Place, Suite 33800, Vancouver, BC, Canada
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