Halliday

Cross-chain payments infrastructure

Halliday is a blockchain company and product lab building a unified cross-chain payments ecosystem. Its flagship product, Halliday Payments, lets users onramp, swap and take other onchain actions through one interface rather than navigating each chain separately. Underneath sits the Workflow Protocol, which removes the need to hand-write smart contracts and lets applications ship in hours rather than years — the contract-writing step being where both the time and the security risk have historically concentrated. Backed by a16z and Hashed, Halliday has worked with ApeChain, Story Protocol and DeFi Kingdoms.