Altos Ventures

Sign Protocol is an omni-chain attestation protocol, enabling users to freely attest and verify any information on-chain. Sign Protocol offers a suite of tools, infrastructure, and standards to create a future where all claims and assertions on the web and the world around us are driven by verifiable attestations. It does this by leveraging modern technologies, such as decentralized blockchains and data storage solutions, along with novel techniques such as the use of zero-knowledge cryptography and digital signatures.

Avail is a blockchain that is laser-focused on data availability: ordering and recording blockchain transactions, and making it possible to prove that block data is available without downloading the entire block. This allows it to scale in ways that monolithic blockchains cannot. Off-chain scaling solutions can unlock their full potential by offloading data availability to Avail. Standalone chains can bootstrap validator security by leveraging Avail for data availability.

Blockus is a Web 2.5 gaming economy platform, enabling game studios to build fast, reduce costs and laser focus on gameplay. Blockus provides seamlessly integrated fiat + crypto payments, NFT storefront + staking, and account + wallet management.