Bitcoin Core
The reference implementation of the Bitcoin protocol.
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Indexed project records; missing years are not zero. Coverage
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1 linkedRepositories linked by published projects. These may include dependencies or mirrors.
Programs & participation
5 records across 1 program2025Summer of BitcoinAnnual program 路 1 project indexed
Source checked Sep 28, 2026
Historical participation from the community-maintained SoB Organizations dataset; not independently verified against an official year archive. Some repository links in the source are forks.
2024Summer of BitcoinAnnual program 路 2 projects indexed
- peer-observer: Anomaly detection and alerting for Bitcoin Core P2P events
- Reviewing and testing improvements for Bitcoin Core
Source checked Sep 28, 2026
Historical participation from the community-maintained SoB Organizations dataset; not independently verified against an official year archive. Some repository links in the source are forks.
2023Summer of BitcoinAnnual program 路 1 project indexed
Source checked Sep 28, 2026
Historical participation from the community-maintained SoB Organizations dataset; not independently verified against an official year archive. Some repository links in the source are forks.
2022Summer of BitcoinAnnual program 路 4 projects indexed
- Add fuzz target for txorphanage
- Bitcoin Core - Functional test for coin selection, Bitcoin Core - Functional test for coin selection, Hexa Wallet - Improving UTXO selection
- Implement a GUI for Importing to the Wallet
- Transaction Conflicts in simulaterawtransaction
Source checked Sep 28, 2026
Historical participation from the community-maintained SoB Organizations dataset; not independently verified against an official year archive. Some repository links in the source are forks.
2021Summer of BitcoinAnnual program 路 14 projects indexed
- Add block re-org capability to the signet network, fix faucet's incompatibility with custom signet and improve documentation.
- Develop functional tests for Test Feeler Connections in Bitcoin core.
- Developing fuzz test to prove that the Bitcoin core implementation of streamcipher chacha20 is the same as the reference implementation by D.J. Bernstein and improvements to BIP324.
- Fuzz testing improvements to Bitcoin core.
- Improve support for User Statically Defined Tracing (USDT) in Bitcoin core by adding new tracepoints and scripts and leveraging eBPF (extended Berkeley Packet Filter) technology.
- Improvements to Bitcoin core by code refactoring, performance optimization and benchmarking.
- Improvements to bitcoin-core GUI i.e., bitcoin-qt.
- Improvements to mempool and package relay in Bitcoin core.
- Improvements to wallet RPC for accurate fee estimation.
- Introduce a -nomempool runtime option to run a Bitcoin node without the mempool, and add a fuzz target for orphan transaction handling to detect potential security issues.
- Optimizing performance of descriptor wallets in Bitcoin core.
- Profile Guided Optimization (PGO) i.e., using profiling and instrumentation techniques to analyze run time statistics and integrate it in Bitcoin core.
- Reviewing, testing and fixing issues in Bitcoin core.
- Reviewing, testing and fixing issues in Bitcoin core. Developing tests for mempool ancestor/descendant limits.
Source checked Sep 28, 2026
Historical participation from the community-maintained SoB Organizations dataset; not independently verified against an official year archive. Some repository links in the source are forks.