ARPA Network develops cryptographic infrastructure for blockchain applications. Its threshold BLS signature network supports Randcast, a service that supplies random values which smart contracts can verify. ARPA also researches verifiable AI and develops applications that use its randomness infrastructure.
Network and products
The network documentation describes how groups of nodes generate a shared signature through distributed key generation and threshold signing. Randcast uses this system to process randomness requests for games, NFT distributions and other applications. Its developer tools include subscription management, fee estimation and a software development kit.
Secure wallets, bridges and custody are potential uses of the underlying signature network. They should not be read as a list of separate, delivered ARPA custody or bridge services.
In 2026, ARPA launched Archive of Fate, an AI storytelling game that combines player choices with Randcast-powered randomness. Verifying a random draw does not establish that every AI-generated sentence or game decision has been cryptographically verified.
Background and research
Previously known as ARPA Chain, the project began in 2018 with a focus on privacy-preserving multiparty computation. Its subsequent work includes threshold signatures, zero-knowledge proofs and machine-learning verification. Felix Xu is its co-founder and CEO. CryptoSlate’s interview with Xu explains the design choices behind Randcast.
Access and limitations
Archive of Fate offers English and Chinese interface options. The main website also has a Turkish version, alongside technical documentation and community links for developers and node operators. Integration costs and network requirements depend on the application. Threshold cryptography reduces reliance on an individual signer, but implementation flaws, node availability and application design still affect security. A verifiable random source alone cannot establish that a game’s rules or reward distribution are fair.
