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kenny-ish/README.md

kenny-ish

Ethereum and DeFi tooling in Python, Go, TypeScript, Solidity and Rust. Most of it reads data from the chain over JSON-RPC: AMM and gas math, contract state, EVM internals.

Featured

Recent

Project Language Description
eip1559-sim-rs Rust Simulate EIP-1559 base fee dynamics in Rust under demand shocks and see how quickly the fee converges back to the target
block-at-timestamp TypeScript Find the Ethereum block for any date with an interpolation-guided binary search over JSON-RPC, counting every RPC call
erc4337-userop-stats Python Account abstraction activity from EntryPoint logs: UserOperation counts, success rate, paymaster share and gas costs over recent blocks
rpc-failover-proxy Go JSON-RPC reverse proxy with automatic failover across multiple upstreams, cooldowns, a method denylist and a health page
proxy-detector Python Detect what's behind an EVM address: EOA, EIP-7702 delegated account, EIP-1167 clone, EIP-1967 transparent/UUPS/beacon proxy or plain contract
code-hash-compare Go Check whether the same address holds identical bytecode on several EVM chains by hashing eth_getCode results
eth-burn-tracker Python Measure ETH burned by EIP-1559 base fees and EIP-4844 blob fees over recent blocks, from block headers and fee history
wallet-connect-demo JavaScript Plain-JS wallet connection demo with EIP-6963 multi-wallet discovery, chain switching, balance lookup and message signing
block-builder-share Python Measure Ethereum block builder market share over recent blocks from on-chain extraData and fee recipients
l2-fee-compare TypeScript Compare the current cost of a transfer and a swap across Ethereum, L2s and sidechains using live gas prices and token prices
vanity-difficulty Python Estimate how long a vanity address search takes for EVM, Solana and Bitcoin prefixes at a given key rate
utxo-coin-selection Go Bitcoin coin selection with Branch and Bound (changeless) and largest-first fallback, scored by the waste metric
sandwich-attack-sim Rust Simulate MEV sandwich attacks on a constant-product pool to see how slippage tolerance determines what a searcher can extract
solana-epoch-progress Python Solana epoch progress and ETA from RPC slot data, using recent performance samples for real slot times
btc-block-intervals Go Analyze recent Bitcoin block intervals from mempool.space and compare them with the exponential distribution of a Poisson process

...and 27 more in the repositories tab.

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  1. abi-lite abi-lite Public

    Solidity ABI encoder/decoder for static types, strings and bytes, with bigint support

    TypeScript

  2. erc4626-vault erc4626-vault Public

    Minimal ERC-4626 tokenized vault with correct rounding directions and virtual-share protection against the inflation attack

    Solidity

  3. eth-checksum-address eth-checksum-address Public

    EIP-55 checksum encoder/validator for Ethereum addresses with a pure-Python Keccak-256

    Python

  4. evm-disassembler-rs evm-disassembler-rs Public

    Disassemble EVM bytecode into opcodes with PUSH data, list the 4-byte selectors it dispatches on and detect the Solidity metadata tail

    Rust

  5. matching-engine-go matching-engine-go Public

    Limit order book matching engine with price-time priority, market orders and cancels, plus an interactive REPL

    Go

  6. univ3-tick-math univ3-tick-math Public

    Uniswap v3 tick, price and sqrtPriceX96 conversions with token decimals and fee-tier tick spacing

    Python