For wallets & custodians
Self-custody, MPC, multi-sig, qualified custody, we review the architecture, test the implementation, and surveil the on-chain footprint that auditors and clients ask about.
Threat model
If users or institutions don't trust your key custody, you don't have a business. That trust is built on architecture choices that have to hold up to adversarial review, not marketing copy.
Threshold-signature protocols and multi-sig wallets fail in subtle ways: weak randomness, biased nonces, recovery paths that bypass the threshold, signing UX that hides what's actually being approved. Implementation matters more than the choice of scheme.
Most wallet incidents start on the client. WebView injection, malicious dApp connections, transaction-spoofing, the surface that users actually touch needs the same scrutiny as the cryptography.
SOC 2, ISO 27001, third-party penetration tests, on-chain transparency, the buyer-side checklist for institutional custody is long, specific, and not optional.
Custody is the most concentrated form of risk in Web3. Get it right and you become infrastructure; get it wrong and you become a case study. The path between the two is paved with architecture review, adversarial testing, and continuous monitoring.
Recommended services
Start with Wallet Setup architecture review, follow with deep-scope Penetration Testing of the apps and signing infrastructure, and keep Wallet Surveillance running on the operational addresses.
Treasury wallet architecture for multi-sig and MPC setups. Signer selection, operational runbooks, training.
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Blockchain pentest of your dApps, APIs, and infrastructure, including MiCA, DORA and PSAN compliance pentest.
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Continuous on-chain monitoring of treasury, admin, and operational wallets. Real-time alerts and an analyst on call.
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Read more
Multi-sig and MPC are not interchangeable. Here is how each fails in practice, what each is good for, and how to pick for a real treasury.
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DAO treasuries combine hedge-fund balance sheets with Discord-server operations. Here is the playbook that closes the gap without sacrificing decentralization.
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What MiCA and modern threat actors expect from a crypto exchange's security posture, custody architecture, API hardening, monitoring, and incident readiness.
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Glossary
MPC Wallet
A wallet using multi-party computation to split a single key across multiple parties so it never exists in one place.
Multi-Sig (Multi-Signature)
A wallet that requires multiple signatures from separate keys to approve a transaction.
Key Management
The full lifecycle of cryptographic keys: generation, storage, use, rotation, and destruction.
Safe (Gnosis Safe)
The leading multi-sig smart-contract wallet on EVM chains, used by most DAOs and protocol treasuries.
