{ "checked_at": "2026-09-12", "resources": [ { "id": "saving-satoshi", "name": "Saving Satoshi", "category": "Learn", "audience": "Curious coders", "description": "An interactive Bitcoin adventure that teaches through programming exercises, puzzles and simulations.", "try": "Complete an early lesson and explain one transaction concept in your own words.", "note": "Free, open-source learning project.", "url": "https://savingsatoshi.com/en/about" }, { "id": "mastering-bitcoin", "name": "Mastering Bitcoin", "category": "Learn", "audience": "Developers", "description": "The third-edition book repository offers a substantial programming-oriented introduction to Bitcoin.", "try": "Pair a chapter with a small experiment and publish a reproducible notebook.", "note": "Read the repository’s edition and licensing notes.", "url": "https://github.com/bitcoinbook/bitcoinbook" }, { "id": "boss", "name": "₿OSS Challenge", "category": "Learn", "audience": "Aspiring open-source contributors", "description": "A route into Bitcoin open-source development, with learning resources and examples of contributors’ work.", "try": "Use the self-paced seminar materials to organize a reading and discussion session.", "note": "Check current program intake separately; alumni stories are not placement guarantees.", "url": "https://bosschallenge.xyz/" }, { "id": "base58", "name": "Base58", "category": "Learn", "audience": "Protocol learners", "description": "Bitcoin protocol education spanning introductory material, developer basics and advanced subjects.", "try": "Choose a course that matches your experience and turn one exercise into a short technical explanation.", "note": "Course formats, prices and cohort dates vary; check the provider.", "url": "https://base58.info/" }, { "id": "bitshala", "name": "Bitshala", "category": "Learn", "audience": "Developers and study groups", "description": "An India-rooted Bitcoin education community with study cohorts, review clubs and fellowship information.", "try": "Prepare questions for a study session, then contribute a useful set of notes.", "note": "Check each program’s current schedule and eligibility.", "url": "https://bitshala.org/" }, { "id": "btrust-builders", "name": "Btrust Builders", "category": "Learn", "audience": "Experienced developers in Africa", "description": "An engineering program for African developers moving into open-source Bitcoin and Lightning work.", "try": "Compare your public code and available study time with the application criteria.", "note": "The page asks for 3+ years of production experience and at least 20 hours a week. Confirm current intake.", "url": "https://www.btrust.tech/builders" }, { "id": "polar", "name": "Polar", "category": "Build", "audience": "Lightning app developers", "description": "A desktop tool for creating local Bitcoin and Lightning test networks with multiple node implementations.", "try": "Build a three-node network and document a successful payment and a failed route.", "note": "Local regtest development; requires Docker and its documented dependencies.", "url": "https://lightningpolar.com/" }, { "id": "bdk", "name": "Bitcoin Dev Kit", "category": "Build", "audience": "Wallet and mobile developers", "description": "Open-source libraries for building Bitcoin wallet applications across platforms.", "try": "Make a test-wallet balance view and document how the app obtains chain data.", "note": "Choose current library versions and follow their own setup documentation.", "url": "https://bitcoindevkit.org/" }, { "id": "ldk", "name": "Lightning Dev Kit", "category": "Build", "audience": "Lightning engineers", "description": "A modular toolkit for adding Lightning functionality with control over key integration choices.", "try": "Compare LDK’s integration approach with the simpler LDK Node starting point.", "note": "Node operation and application integration require separate design decisions.", "url": "https://lightningdevkit.org/" }, { "id": "rust-bitcoin", "name": "rust-bitcoin", "category": "Build", "audience": "Rust developers", "description": "A home for Bitcoin-focused Rust libraries and a cookbook of development examples.", "try": "Write a small transaction-inspection utility with tests for malformed input.", "note": "Use documentation matching the exact crate version in your project.", "url": "https://rust-bitcoin.org/" }, { "id": "btcpay", "name": "BTCPay Server documentation", "category": "Build", "audience": "Commerce and integration developers", "description": "Documentation for an open-source, self-hosted Bitcoin payment processor.", "try": "Map a test checkout from invoice creation to payment confirmation and order fulfillment.", "note": "Software and documentation are open source; hosting and operations still need a plan.", "url": "https://docs.btcpayserver.org/" }, { "id": "second-labs", "name": "Second Labs", "category": "Build", "audience": "Mobile and payment developers", "description": "Ark and Lightning application demos, including wallet examples for several mobile and app frameworks.", "try": "Inspect a demo in your preferred language and document its network and server assumptions.", "note": "Check each demo’s network. Do not assume every example is a signet-only application.", "url": "https://labs.second.tech/" }, { "id": "design-guide", "name": "Bitcoin Design Guide", "category": "Design", "audience": "Product and UX designers", "description": "A community guide covering Bitcoin product design, user research, accessibility and wallet flows.", "try": "Audit one receive-payment flow against its relevant guidance and explain your tradeoffs.", "note": "Reference guidance should be adapted to the product and its users.", "url": "https://bitcoin.design/guide/" }, { "id": "ui-kit", "name": "Bitcoin UI Kit", "category": "Design", "audience": "Interface designers", "description": "Reusable Bitcoin interface components and screens for exploring product ideas in Figma.", "try": "Prototype an invoice that can be pending, paid or expired, with clear recovery actions.", "note": "Check the kit’s current instructions, account requirements and license.", "url": "https://www.bitcoinuikit.com/" }, { "id": "icons", "name": "Bitcoin Icons", "category": "Design", "audience": "Designers and front-end developers", "description": "A Bitcoin-oriented icon set with source files and formats useful in interfaces.", "try": "Use a small, consistent icon vocabulary and pair unfamiliar actions with text labels.", "note": "Review licensing and attribution for the assets you use.", "url": "https://github.com/BitcoinDesign/Bitcoin-Icons" }, { "id": "design-code", "name": "Design-to-code resources", "category": "Design", "audience": "Design engineers", "description": "Bitcoin Design’s collection of code resources connects interface ideas with implementation examples.", "try": "Select one component and demonstrate keyboard access, error states and responsive behavior.", "note": "Individual projects have their own maintenance status and licenses.", "url": "https://bitcoin.design/guide/resources/code-resources/" }, { "id": "optech", "name": "Bitcoin Optech", "category": "Reference", "audience": "Working Bitcoin engineers", "description": "Technical newsletters, topic explanations and workshops about Bitcoin engineering developments.", "try": "Choose one topic relevant to a project and trace its original discussion before proposing a change.", "note": "A proposal described in a newsletter may not be deployed or widely supported.", "url": "https://bitcoinops.org/" }, { "id": "bips", "name": "Bitcoin Improvement Proposals", "category": "Reference", "audience": "Protocol and wallet developers", "description": "The public repository of Bitcoin Improvement Proposals and their recorded status.", "try": "Read a proposal’s motivation, specification and status before implementing a related feature.", "note": "A BIP number or repository entry does not mean network adoption.", "url": "https://github.com/bitcoin/bips" }, { "id": "bolts", "name": "Lightning BOLTs", "category": "Reference", "audience": "Lightning developers", "description": "The evolving Lightning specifications, including messaging, routing and payment encoding.", "try": "Trace one field from a test invoice to its specification and your implementation’s behavior.", "note": "Specifications and implementations evolve; record the revision you consulted.", "url": "https://github.com/lightning/bolts" }, { "id": "core-review", "name": "Bitcoin Core PR Review Club", "category": "Contribute", "audience": "New Core reviewers", "description": "Prepared pull-request discussions that help newcomers learn code review and the Core codebase.", "try": "Reproduce an archived session’s test and write down what you verified and what remains unclear.", "note": "Use the archive anytime; check the site for actual upcoming meetings.", "url": "https://bitcoincore.reviews/" }, { "id": "ldk-review", "name": "LDK PR Review Club", "category": "Contribute", "audience": "Rust and Lightning contributors", "description": "Review discussions and notes for people learning to contribute to LDK.", "try": "Choose a documented review, inspect the patch and explain one behavior it changes.", "note": "An archive is useful even when no upcoming meeting is announced.", "url": "https://ldk.reviews/" }, { "id": "core-contributing", "name": "Contributing to Bitcoin Core", "category": "Contribute", "audience": "Code, test and documentation contributors", "description": "The project’s own instructions for participating in Bitcoin Core development and review.", "try": "Read the current process, reproduce an issue, and submit evidence only when you can explain it.", "note": "Follow the project’s contribution and disclosure procedures.", "url": "https://github.com/bitcoin/bitcoin/blob/master/CONTRIBUTING.md" }, { "id": "design-community", "name": "Bitcoin Design community", "category": "Contribute", "audience": "Designers and researchers", "description": "An open design community working on resources and experiences for Bitcoin products.", "try": "Review a project’s existing discussion, then offer a focused flow analysis or research question.", "note": "Check the community’s current participation channels and contribution guidance.", "url": "https://bitcoin.design/community/" }, { "id": "delving", "name": "Delving Bitcoin", "category": "Reference", "audience": "Technical readers and researchers", "description": "A forum for detailed Bitcoin technical discussions and research.", "try": "Summarize one thread’s assumptions, unresolved questions and proposed experiments for your own notes.", "note": "Discussion is not consensus or evidence that a feature is ready for production.", "url": "https://delvingbitcoin.org/about" } ], "funding": [ { "id": "brink-grant", "name": "Brink developer grants", "kind": "Grant", "status": "Application route published", "region": "Worldwide", "fit": "Established contributors to Bitcoin protocol and related open-source projects.", "detail": "Year-long support for full-time contribution. The program asks for a track record, public deliverables and regular progress updates.", "prepare": "Link substantive reviews or contributions and describe the work you can sustain independently.", "url": "https://brink.dev/programs" }, { "id": "brink-fellowship", "name": "Brink fellowship", "kind": "Fellowship", "status": "Application route published", "region": "London · relocation required", "fit": "Software engineers seeking an intensive route into Bitcoin Core development.", "detail": "A paid, one-year program with mentoring. Prior open-source evidence matters; the program takes place in Brink’s London office.", "prepare": "Show how you learn through code, testing or technical writing and assess the relocation requirement.", "url": "https://brink.dev/programs" }, { "id": "bdk-grants", "name": "Bitcoin Dev Kit grants", "kind": "Grant", "status": "Proposal instructions published", "region": "Geographic eligibility: confirm with provider", "fit": "Rust, mobile bindings, testing, documentation and research contributors to BDK.", "detail": "The foundation describes full-time and project grants. Project work should support BDK and fit roughly one quarter.", "prepare": "Define a library, binding, test or documentation improvement and show prior relevant public work.", "url": "https://bitcoindevkit.org/foundation/grants/" }, { "id": "btrust-grants", "name": "Btrust grants", "kind": "Grant", "status": "Rolling review stated", "region": "Africa, India, Latin America, MENA & Southeast Asia", "fit": "Bitcoin open-source developers, educators and event organizers in the program’s focus regions.", "detail": "Separate developer, education and event routes are listed. Other Global South applicants may be considered based on their work.", "prepare": "Choose the relevant category and connect your proposal to public Bitcoin contribution in your region.", "url": "https://www.btrust.tech/grants" }, { "id": "spiral-grants", "name": "Spiral FOSS grants", "kind": "Grant", "status": "Proposal instructions published", "region": "Multiple countries · confirm eligibility", "fit": "Engineering and design work that benefits Bitcoin through free and open-source projects.", "detail": "Spiral’s current grant page invites independent developers, designers and others to send a detailed proposal for Bitcoin or open-source AI work. This directory focuses on the Bitcoin route.", "prepare": "Explain the public benefit, your contribution history, milestones and how the work will remain open.", "url": "https://spiral.xyz/grants/" }, { "id": "opensats", "name": "OpenSats general grants", "kind": "Grant", "status": "Applications closed when checked", "region": "Worldwide · pseudonymous applicants welcome", "fit": "Bitcoin-related free and open-source work, including development, research and design.", "detail": "The current application page says the main grant window is closed. Consult the quarterly schedule for reopening; do not rely on older rolling-application announcements.", "prepare": "Prepare a concise proposal, a proper open-source license and the references requested by the application page.", "url": "https://opensats.org/apply" }, { "id": "opensats-red", "name": "OpenSats RED Token Reimbursement", "kind": "Research support", "status": "Application route open when checked", "region": "Confirm program-specific requirements", "fit": "Security researchers working on Bitcoin and related free and open-source software.", "detail": "A separate application route for LLM token and related compute reimbursement. This is distinct from the closed general grant window.", "prepare": "Show prior relevant security work and expense context. Follow the program’s research conditions and keep nonpublic findings out of the application.", "url": "https://opensats.org/apply/red" } ] }