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Sébastien Palmer

PROFILE

Sébastien Palmer

Worked on protocol compatibility and configuration management for Tezos-related projects using Python and blockchain development skills. In LedgerHQ/app-exchange, implemented reveal encoding compatibility for the Tezos Seoul protocol by adding an empty proof field to reveal operations, ensuring readiness for BLS key integration while maintaining separation between production and test environments. Later, in LedgerHQ/ledger-app-database, delivered a configuration update to disable BLS curve support in Tezos baking app parameters, aligning with a strategic shift away from BLS-based baking. Both changes focused on reducing future maintenance complexity, improving protocol upgrade readiness, and maintaining clear traceability through disciplined commit management and parameter adjustments.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

2Total
Bugs
0
Commits
2
Features
2
Lines of code
1
Activity Months2

Work History

August 2025

1 Commits • 1 Features

Aug 1, 2025

In August 2025, delivered a strategic configuration change in LedgerHQ/ledger-app-database: disabled BLS curve support in Tezos baking app parameters. The change is a configuration/parameter adjustment with no code changes, aligning with the product strategy to de-emphasize BLS-based baking. This reduces complexity and risk, simplifies future maintenance, and clarifies the road map for Tezos baking within Ledger devices. Commit traceability is preserved for audits and reviews.

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025 — LedgerHQ/app-exchange: Implemented Tezos Seoul protocol reveal encoding compatibility. Added an empty proof field to reveal operations to align encoding with Seoul protocol requirements for BLS keys, while the test environment continues to use tz1 keys and does not require the proof for swapping. No major bugs fixed this month. Impact: increases protocol upgrade readiness, improves interoperability with Tezos Seoul, and reduces risk of reveal-encoding regressions during future upgrades. Technologies/skills demonstrated: Tezos protocol knowledge, encoding adjustments, disciplined change management with Git commits (26b1cc113e5ef923a2683ce969f33e1792f4023b), and clear separation between production and test environments.

Activity

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Quality Metrics

Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Python

Technical Skills

Blockchain DevelopmentPython DevelopmentTezos

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

LedgerHQ/app-exchange

Jun 2025 Jun 2025
1 Month active

Languages Used

Python

Technical Skills

Blockchain DevelopmentPython DevelopmentTezos

LedgerHQ/ledger-app-database

Aug 2025 Aug 2025
1 Month active

Languages Used

No languages

Technical Skills

No skills