Add ChainKit: multi-chain blockchain data infrastructure (ABI decoder, RPC transport, indexer, error decoder)

[DarshanKumar89]

Add ChainKit to Other section

What is ChainKit?

ChainKit is a monorepo of four
production-grade Rust libraries for blockchain data infrastructure. Each module
is an independent Cargo workspace with language bindings for TypeScript, Python,
Go, Java, and WASM.

Modules:

• chaincodec — Universal ABI decoder for EVM events, calls, EIP-712. 50+ bundled
  protocol schemas (Uniswap, Aave, Lido, EigenLayer). Published on crates.io + npm + PyPI.
• chainrpc — Production RPC transport with circuit breakers, rate limiting,
  tiered caching, MEV protection. Supports 7 chain families (EVM, Solana, Cosmos,
  Substrate, Bitcoin, Aptos, Sui). 301 tests.
• chainindex — Reorg-safe blockchain indexer with pluggable storage
  (SQLite/PostgreSQL/RocksDB). 397 tests.
• chainerrors — EVM + Solana error decoder. Turns raw revert hex into
  human-readable messages.

Why it belongs here:
ChainKit provides foundational primitives that any Rust blockchain project can
use — similar to how merk provides Merkle storage or tesseracts provides
block exploration. It fills the gap for production-grade multi-chain data reading
infrastructure in Rust.

Published on: crates.io, npm (@ChainFoundry), PyPI
License: MIT