FOR QUALIFIED CUSTODIANS

Run a licensed custody business on proven Bitcoin infrastructure

Offer your clients custody with provable security — no rehypothecation, on-chain proof of reserves, and open-source infrastructure with no lock-in.

  • No rehypothecation, ever
  • On-chain proof of reserves
  • Open-source, no lock-in
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Blockstream Enterprise background
FOR QUALIFIED CUSTODIANS

Run a licensed custody business on proven Bitcoin infrastructure

Custody infrastructure, not a black box Custody infrastructure, not a black box

Custody infrastructure, not a black box

Securing client assets is your business. Building the cryptographic infrastructure for it shouldn’t have to be. Blockstream gives you verifiable, open-source custody technology to build on — so you offer provable security without building it from scratch or trusting a vendor you can’t inspect.

  • Proven, open, verifiable infrastructure — in production since 2014
  • Runs under your brand and your licence
  • No years of cryptographic engineering before your first client onboards

The assurance pillars

01
No rehypothecation
Client assets are never lent or reused — provably.
02
Proof of reserves
On-chain verification your clients can check themselves.
03
Multisig + HSM
Keys split across signers and hardware security modules.
04
Open primitives
Open-source foundations you can inspect — no black box, no lock-in.
Verify, don’t trust Verify, don’t trust

Verify, don’t trust

Every assurance is verifiable on-chain. See exactly how proof of reserves works — the cryptography, the attestation flow, and what your clients can check without asking you.

Read the technical overview (ungated) →

Who we work with

Build on custody you can prove