Arweave

Arweave is a decentralized, permanent data storage protocol that enables information to be stored permanently on a blockchain-based network. Described as Bitcoin for data, the Arweave network operates as a permanent and decentralized web inside an open ledger, where users pay a one-time upfront fee to store data permanently. The protocol follows a self-organizing decentralized algorithm that allows the network to adapt autonomously to the most efficient routes of information distribution. Arweave offers REST APIs that allow developers to create decentralized applications in any programming language, enabling the hosting of truly decentralized and provably neutral web applications. Permanent storage has applications ranging from the preservation of humanity's most important data to the hosting of censorship-resistant web apps, decentralized archives, and immutable data layers for blockchain ecosystems. The Arweave protocol is stable, mature, and widely adopted, with a fully decentralized ecosystem that includes storage platforms, permaweb applications, developer tools, and funding mechanisms. The protocol's blockweave architecture distinguishes it from traditional blockchains by linking blocks to both previous blocks and random past blocks, creating a self-organizing incentive structure where miners must prove they have access to historical data. Founded in 2017 and headquartered in London, United Kingdom, Arweave has raised $14.4M in Series A funding from investors including Andreessen Horowitz, Union Square Ventures, Coinbase, Multicoin Capital, 1kx, Techstars, Advanced Blockchain, Blockchain Coinvestors, Borderless Capital, Signum Capital, and Version One Ventures.