What I've built so far:

SPL Token Staking — A multi-tier staking program with time-weighted multipliers. Seven lock tiers from 1 day to 365 days, dual reward distribution (SPL + WSOL), fully on-chain. Program ID: Cbhx5F1fVJG83xkqse88rxatrj73UW9Lz9G7awBrW8WZ.

Mercenary Liquidity — An on-chain bounty protocol for liquidity providers. Projects escrow SOL to incentivize LPs with time-locked claims and automatic fee collection. Currently on devnet. Program ID: 3hDJRcAJf5AHrRgkXhUUCcTYQVMkCubh9M6kTrsBZv55.

Both are Rust/Anchor programs with TypeScript clients. Both are open source.

What's next:

I'm looking at MarginFi and Agave for first OSS contributions — structured events for configure_bank_lite and CLI cleanup work. Small surface area, easy to verify, and genuinely useful. The kind of work that doesn't get likes but keeps infrastructure from rotting.

I'm also documenting the build process here on Paragraph. Not tutorials — more like field notes from someone learning the ecosystem by writing programs and reading other people's code.

If you're building on Solana and want to connect: nullopcode.cv

— nullopcode