A crypto compliance and blockchain analytics company.

The family of curves (secp256k1, Ed25519) used by most chains to make compact public keys and signatures.

A high-profile 2017 to 2018 smart-contract project that raised a record ICO and later faded from leadership.

A multi-token standard that can hold fungible and non-fungible ids in one contract.

An Ethereum interface allowing a smart contract account to report whether it considers a given message signature valid.

An Ethereum interface standard for fungible token contracts, covering balances, transfers, allowances, and events.

The account-abstraction standard that adds user operations, bundlers, and paymasters without changing Ethereum consensus.

A vault standard so yield-bearing shares (like lending receipts) share one deposit and redeem interface.

A vault-accounting attack in which manipulation of assets per share and rounding can cause a depositor to receive too few shares.

A standard vocabulary of custom error types for common ERC-20, ERC-721, and ERC-1155 token failures.

The Ethereum standard for non-fungible tokens, where each token id is unique.

An exchange-traded fund. Spot Bitcoin and ether ETFs hold the asset and trade as shares on stock venues.

The leading smart-contract platform. A proof-of-stake chain that hosts DeFi, NFTs, and most L2 settlement.

The chain that rejected the DAO bailout fork and kept the original Ethereum history.

The Prague-Electra Ethereum upgrade activated in May 2025, combining execution-layer and consensus-layer changes including EIP-7702 account delegation.

Exchange-traded product, the umbrella that includes ETFs, ETNs, and some trusts.

The central bank of the euro area, developing a digital euro and supervising euro stablecoin issues under MiCA with national authorities.

A consistency guarantee under which replicas converge once updates stop and propagate, while intermediate reads may disagree.