Choose the custody model first
In a non-custodial design, the user controls signing keys; a custodial product has different operational and security responsibilities. Recovery and account access must be designed around that choice. The application should explain the consequences of losing credentials or approving a transaction.
Signing and key protection
Private keys must not enter ordinary logs, analytics or unrelated API requests. Key storage and signing options depend on the target platform and threat model. Sensitive workflows need careful testing and an appropriate independent security assessment before handling valuable assets.
Transaction experience and network access
The interface should make recipient, network, amount and relevant fees understandable before signing. Submitted, confirmed and failed states need different messages. Node or RPC integration must handle connection failures and chain-specific formats without silently presenting stale data as current.
What the scope can include
- Custody and recovery architecture
- Agreed signing and network integration flows
- Transaction UX and security-review preparation
The final deliverables, schedule, ownership and maintenance terms are agreed for your project before implementation.
A relevant engineering reference
A public Python blockchain project covering Falcon-512 signatures, full nodes and P2P networking. Review the source and portfolio for implementation context; this reference makes no independent security or performance claim.
Explore QbitcoinPublic CEO portfolio reference. We will discuss which experience and components are relevant to your requirements.
Questions & answers
Who controls private keys in a non-custodial wallet?
The user controls the signing keys in a non-custodial model. The exact storage and recovery design matters: an interface described as non-custodial should not silently send keys to an operator.
Can a wallet integrate with a custom blockchain?
Yes, provided its transaction format, signing rules and node interfaces are documented. Custom-chain integration needs tests for address handling, fees and transaction lifecycle behavior.