Cheesecake Labs shares insights on building non-custodial wallets on Stellar, covering key storage using native mobile encryption, SEP-30 key recovery with multi-signature accounts, and challenges integrating with anchors via SEP-6 and SEP-24 standards.
Bruno from Cheesecake Labs discusses their experience developing non-custodial wallets for the Stellar Network, including projects like Monogram and Vibrant Wallet. Key topics include storing user secret keys securely on mobile devices using Apple Keychain and Android Shared Preferences without server transmission, implementing SEP-30 multi-signature key recovery where users share signing power across multiple keys, and handling SEP-5 seed phrases. The team addresses usability challenges for non-crypto users, particularly with Monogram's payment flows. Major anchor integration challenges covered include SEP-6 deposit/withdraw operations with varying KYC processes across providers, quote expiration handling, and SEP-24 web-based flows. The speaker emphasizes communication between wallet and anchor teams, sandbox testing on testnet, and handling edge cases like delayed KYC verification through webhooks.