WAF, Web Application Firewall

Security layer that filters HTTP traffic using rules to block injections, bots, and DDoS, often fronting RPC gateways, explorers, and dapp APIs.

Warrant Canary

Statement that is regularly updated to indicate no secret legal requests have been received; removal signals possible compelled disclosure without violating gag orders.

Weak Subjectivity

Property of proof of stake chains that new nodes must rely on a recent trusted checkpoint to sync securely, preventing long range attacks from old validator keys.

Weighted AMM

Automated market maker design where pools maintain non 50/50 token weights to track target indexes or volatility preferences, e.g., Balancer weighted pools.

WBTC, Wrapped Bitcoin

Tokenized bitcoin on EVM chains backed by custodial reserves; enables BTC liquidity to participate in DeFi while inheriting custodian risk.

WETH, Wrapped Ether

ERC-20 representation of ETH used in DeFi protocols that expect token interfaces; 1 WETH is redeemable for 1 ETH via deposit and withdraw functions.

Wrapped Token

Representation of an asset on another chain or format via custodial or trustless bridges; maintains a peg through reserves or proofs of reserve mechanisms.

Webhook

HTTP callback triggered by events like on chain confirmations or oracle updates, used to notify backends without polling node APIs constantly.

WebSocket

Bidirectional connection protocol used by node providers and dapps to stream new blocks, mempool events, and real time updates efficiently.

WebRTC

Peer to peer media and data channel technology for browsers; used by decentralized apps for real time messaging, file sharing, and node to node signaling.

WebGPU

Modern web graphics and compute API that exposes low level GPU features for fast ML inference and rendering directly in the browser without plugins.

NACKL News