Crypto

A reference site that lists every TLS cipher suite searchably, with IANA and OpenSSL names, a security rating… in Networking & Sysadmin →

An explorer visualising Bitcoin’s pending transaction pool and the chain, runnable against your own node. in Networking & Sysadmin →

The official site of the TLS/SSL and general-purpose cryptography library and the openssl command-line tool; command… in Networking & Sysadmin →

A list of theory-basics papers on cryptography for non-cryptographers. in Offence, Defence & OSINT →

A set of 48 programming exercises in 8 sets that teach cryptography by attacking real constructions; you write the attacks yourself. in CTF & Hands-on Labs →

A list of developer resources for Algorand, a proof-of-stake blockchain. in Finance, Markets & Crypto →

A list of services and tools for Bitcoin software development. in Finance, Markets & Crypto →

A list of processors and tools to start accepting Bitcoin payments. in Finance, Markets & Crypto →

A list of cryptocurrency tools and algorithms — wallets, node software, libraries. in Finance, Markets & Crypto →

A resource list for Cosmos, a modular framework for building app-specific blockchains. in Finance, Markets & Crypto →

A list of developer resources for Ethereum, the smart-contract platform. in Finance, Markets & Crypto →

A developer guide and reference for building on Bitcoin: transactions, RPC and the P2P network. in Finance, Markets & Crypto →

A Q&A site for Bitcoin users and developers. in Finance, Markets & Crypto →

The nine-page paper that introduced Bitcoin. in Finance, Markets & Crypto →

The community wiki on how Bitcoin works: protocol, script, history. in Finance, Markets & Crypto →

A library giving one API over more than a hundred crypto exchanges (JavaScript, Python, PHP and others). in Finance, Markets & Crypto →

Crypto prices and market-cap rankings, with the data also available through a free API. in Finance, Markets & Crypto →

Market data for thousands of crypto assets, DEXes included, with a free API. in Finance, Markets & Crypto →

Widely used crypto prices and rankings by market cap. in Finance, Markets & Crypto →

DeFi total-value-locked analytics across chains. in Finance, Markets & Crypto →

An analytics platform where the community builds dashboards with SQL queries over blockchain data. in Finance, Markets & Crypto →

A lightweight open-source Bitcoin wallet, developed since 2011. in Finance, Markets & Crypto →

Ethereum’s canonical block explorer, with transaction tracing, contract verification and an API. in Finance, Markets & Crypto →

An Ethereum token explorer: holders, transfers and token pages. in Finance, Markets & Crypto →

Crypto market intelligence through on-chain metrics and derived indicators. in Finance, Markets & Crypto →

Explains Bitcoin’s technical workings — transaction structure, script, mining — through worked examples. in Finance, Markets & Crypto →

The most widely used browser-extension wallet for Ethereum-compatible networks. in Finance, Markets & Crypto →

Audited smart-contract libraries and security tooling for Solidity. in Finance, Markets & Crypto →

An ordered map running from cryptographic fundamentals to smart contracts and Solidity. in Learning & Roadmaps →

A browser visualisation that animates how SHA-256 turns an input into a hash, showing the bits in memory and each round. in Learning & Roadmaps →

The open repository of Andreas Antonopoulos’s book on how Bitcoin works technically. in Free Books & Long Reads →

A platform for placing bounties on open-source work and raising funds, born in the Ethereum ecosystem. in Open Source & Contributing →