Software with publicly available source code that anyone can inspect, modify, and distribute. Most Solana infrastructure is open-source: the Agave validator (Rust, Apache 2.0), Anchor framework, SPL programs, and major DeFi protocols. Open-source enables community auditing, composability, and trust verification. Licenses (MIT, Apache 2.0, GPL) define usage terms.
Start with the shortest useful explanation before going deeper.
Software with publicly available source code that anyone can inspect, modify, and distribute. Most Solana infrastructure is open-source: the Agave validator (Rust, Apache 2.0), Anchor framework, SPL programs, and major DeFi protocols. Open-source enables community auditing, composability, and trust verification. Licenses (MIT, Apache 2.0, GPL) define usage terms.
Use the quick analogy first so the term is easier to reason about when you meet it in code, docs, or prompts.
Think of it as a building block that connects one definition to the larger Solana system around it.
Place the term inside its Solana layer so the definition is easier to reason about.
Serialization, memory, data structures, and core engineering basics.
Turn the term from vocabulary into something operational for product and engineering work.
This term unlocks adjacent concepts quickly, so it works best when you treat it as a junction instead of an isolated definition.
Use this compact block when you want to give an agent or assistant grounded context without dumping the entire page.
Open Source (open-source) Category: Programming Fundamentals Definition: Software with publicly available source code that anyone can inspect, modify, and distribute. Most Solana infrastructure is open-source: the Agave validator (Rust, Apache 2.0), Anchor framework, SPL programs, and major DeFi protocols. Open-source enables community auditing, composability, and trust verification. Licenses (MIT, Apache 2.0, GPL) define usage terms. Related: Solana Verify (solana-verifiable-build), Security Audit
Use glossary context, relationships, mental models, and builder paths to get structured answers instead of generic chat output.
Optional: paste Anchor, Solana, or Rust code so the Copilot can map primitives back to glossary terms.
The Copilot will answer using the current term, related concepts, mental models, and the surrounding glossary graph.
These branches show which concepts this term touches directly and what sits one layer beyond them.
A tool and standard for verifying that deployed on-chain program bytecode matches public source code. `solana-verify build` produces a deterministic build using Docker, and `solana-verify verify-from-repo` checks the deployed binary against a Git repo. Verified programs are listed on the Solana Explorer and OtterSec's verify registry, increasing user trust.
A formal, structured review of a Solana program's source code, architecture, and deployment configuration by experienced security researchers, aimed at identifying vulnerabilities — including but not limited to the OWASP-equivalent Solana Top 10 (missing signer checks, owner checks, arithmetic errors, etc.) — before mainnet deployment. Reputable Solana-focused audit firms include OtterSec, Ackee Blockchain, sec3 (formerly Soteria), Neodyme, Trail of Bits, and Halborn; most audits produce a severity-rated finding report (critical, high, medium, low, informational) that programs are expected to remediate and publish. A single audit is considered minimum due diligence for programs holding significant user funds; continuous auditing and bug bounties on platforms like Immunefi are considered best practice.
These are the next concepts worth opening if you want this term to make more sense inside a real Solana workflow.
Glossary entries become useful when they are connected. These links are the shortest path to adjacent ideas.
A tool and standard for verifying that deployed on-chain program bytecode matches public source code. `solana-verify build` produces a deterministic build using Docker, and `solana-verify verify-from-repo` checks the deployed binary against a Git repo. Verified programs are listed on the Solana Explorer and OtterSec's verify registry, increasing user trust.
A formal, structured review of a Solana program's source code, architecture, and deployment configuration by experienced security researchers, aimed at identifying vulnerabilities — including but not limited to the OWASP-equivalent Solana Top 10 (missing signer checks, owner checks, arithmetic errors, etc.) — before mainnet deployment. Reputable Solana-focused audit firms include OtterSec, Ackee Blockchain, sec3 (formerly Soteria), Neodyme, Trail of Bits, and Halborn; most audits produce a severity-rated finding report (critical, high, medium, low, informational) that programs are expected to remediate and publish. A single audit is considered minimum due diligence for programs holding significant user funds; continuous auditing and bug bounties on platforms like Immunefi are considered best practice.
These entries live beside the current term and help the page feel like part of a larger knowledge graph instead of a dead end.
A systems programming language emphasizing memory safety, zero-cost abstractions, and concurrency without a garbage collector. Rust uses an ownership model with borrow checking at compile time to prevent data races and null pointer bugs. It is the primary language for Solana program development (via Anchor or native solana-program crate) and the Agave validator client.
A statically typed superset of JavaScript that compiles to plain JavaScript. TypeScript adds type annotations, interfaces, generics, and enums to catch errors at compile time. It is the standard language for Solana client-side development—wallet adapters, dApp frontends, test suites, and SDK interactions (web3.js, Anchor client) are typically written in TypeScript.
The ubiquitous scripting language for web development, running in browsers and Node.js. JavaScript is dynamically typed and event-driven. Most Solana dApp frontends and scripts use JavaScript/TypeScript with libraries like @solana/web3.js. Node.js enables server-side JS for backend services, indexers, and bot development.
A JavaScript runtime built on Chrome's V8 engine that enables server-side JavaScript execution. Node.js uses an event-driven, non-blocking I/O model. In the Solana ecosystem, Node.js is used for: running Anchor tests (Mocha/Jest), backend services, transaction bots, indexers, and CLI tools. npm/yarn/pnpm manage JavaScript package dependencies.