2-of-3 threshold signing
Three independent shares, any two of which sign. No single party can move funds, and no single party can lose them.
MPC Crypto Custody (Non-Custodial) | ACM Global Tech
MPC custody
Hold the keys, without holding the risk.
Non-custodial digital asset custody built on 2-of-3 MPC threshold signing, with no single point of compromise and no private key ever assembled in one place. The hardest part of custody, distributed signing, is exactly what we built.
The problem
A single key is a single point of failure.
Traditional custody concentrates control in one private key or one hardware module. Whoever holds it holds everything, and losing it, leaking it, or having it seized is catastrophic and irreversible. Operations make it worse: rotating keys usually means moving every asset to new addresses.
Single key
One secret to steal
A lone private key is the whole castle. Compromise it once and every asset under it is gone, with no recourse.
Custodial
Counterparty exposure
Handing assets to a third-party custodian replaces key risk with counterparty risk: their insolvency or breach becomes yours.
Rotation
Key changes break addresses
Conventional schemes force an on-chain move to new addresses just to rotate a key, disrupting integrations and reconciliation.
Quantum
Identity at long-term risk
The signatures proving who controls an account rest on cryptography a future quantum computer can break.
What we deliver
Threshold custody, no single point of compromise.
Not a key in a vault: a private key that is never whole, split across parties and reconstituted only as signatures, never as a secret.
CGGMP21 + FROST
Threshold ECDSA via CGGMP21 and threshold Schnorr via FROST, so the key exists only as distributed shares. This is the frontier, and the hardest part.
HSM attestation
Shares are generated and held under hardware security modules with cryptographic attestation of their integrity.
Rotation without new addresses
Rotate and reshare key material on a schedule while the public addresses stay exactly the same.
Resharing on demand
Add, remove, or refresh signers by resharing, with no asset movement and no change to who can transact.
Post-quantum identity
ML-DSA-based identity and attestation so the proof of who controls an account survives the quantum transition.
The proof
Proprietary IP. Open source. Auditable.
Real cryptography you can read and verify, not slideware.
Non-custodial by construction
The full private key never exists in one place, so there is no master secret for anyone, including us, to hold or hand over.
Battle-tested protocols
CGGMP21 and FROST are peer-reviewed threshold signing schemes, implemented in the open rather than behind a curtain.
Proprietary IP, open source
Our key-management innovations are auditable in public repositories, so the security model is verifiable end to end.
Custody assets without a master key.
License the IP, resell it under your brand, or co-build with our team. Deployable into any regulated market.
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