
Philip Zdb worked on backend and blockchain integrations for LedgerHQ, focusing on DeFi asset support and financial logic. He delivered the Yield.xyz USDe vault integration with Ethena protocol in the clear-signing-erc7730-registry repository, implementing Solidity smart contracts and TypeScript functions to extend multi-asset support. In ledger-live, he improved Polkadot balance calculations by refining spendable balance logic to handle reserved and frozen funds, enhancing staking reliability. Philip also designed a modular JSON schema for BENQI sAVAX, enabling secure staking and redemption workflows. His work demonstrated depth in Solidity, TypeScript, and JSON schema design, addressing complex integration and maintainability challenges.

December 2025: Delivered BENQI integration for sAVAX in LedgerHQ/clear-signing-erc7730-registry. Implemented a new sAVAX JSON schema that defines contract functions for staking, unlocking, and redeeming AVAX, enabling the registry to securely interact with the BENQI protocol and streamline user workflows for sAVAX assets. This milestone expands DeFi interoperability within our ledger tooling and establishes a scalable pathway for future cross-protocol integrations.
December 2025: Delivered BENQI integration for sAVAX in LedgerHQ/clear-signing-erc7730-registry. Implemented a new sAVAX JSON schema that defines contract functions for staking, unlocking, and redeeming AVAX, enabling the registry to securely interact with the BENQI protocol and streamline user workflows for sAVAX assets. This milestone expands DeFi interoperability within our ledger tooling and establishes a scalable pathway for future cross-protocol integrations.
July 2025 monthly summary for LedgerHQ/ledger-live focusing on Polkadot balance accuracy and reliability. Implemented spendable balance calculation improvements to account for reserved vs frozen balances, ensured unbonding proceeds reliably when locks are present or empty, and fixed negative balance scenarios. These changes reduce user-facing balance discrepancies and improve staking UX and reliability.
July 2025 monthly summary for LedgerHQ/ledger-live focusing on Polkadot balance accuracy and reliability. Implemented spendable balance calculation improvements to account for reserved vs frozen balances, ensured unbonding proceeds reliably when locks are present or empty, and fixed negative balance scenarios. These changes reduce user-facing balance discrepancies and improve staking UX and reliability.
June 2025 performance snapshot: Delivered the Yield.xyz USDe Vault integration for LedgerHQ/clear-signing-erc7730-registry, adding a new vault that integrates with Ethena protocol and extends registry support for DeFi assets. Implemented Ethena interaction functions and completed linting cleanups and comment improvements to enhance maintainability. This work accelerates onboarding of new DeFi assets and strengthens the platform's multi-asset support, enabling faster delivery of DeFi vaults and improved developer experience.
June 2025 performance snapshot: Delivered the Yield.xyz USDe Vault integration for LedgerHQ/clear-signing-erc7730-registry, adding a new vault that integrates with Ethena protocol and extends registry support for DeFi assets. Implemented Ethena interaction functions and completed linting cleanups and comment improvements to enhance maintainability. This work accelerates onboarding of new DeFi assets and strengthens the platform's multi-asset support, enabling faster delivery of DeFi vaults and improved developer experience.
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