Filecoin Launches Onchain Cloud Testnet for Programmable Warm Storage

Filecoin is shifting its architecture from a cold archive into an active, programmable cloud. At an event in Buenos Aires on November 18, 2025, the project launched its "Onchain Cloud," a release designed to move the network away from passive, long-term data archiving toward active workloads. According to official documentation, the new platform handles verifiable storage, fast retrieval, and programmable payments entirely onchain.

Developed by the protocol engineering and research team FilOz, the Onchain Cloud is currently live on the Filecoin testnet. A full mainnet launch is scheduled for January 2026, though the exact launch date remains unestablished. For hardware providers and infrastructure operators, this programmable warm storage layer represents a fundamental shift in how Filecoin’s storage capacity can be utilized.

The Developer Pipeline: Synapse and Filecoin Pin

To tap into these capabilities, developers must route through the Synapse SDK, the primary entry point for integrating Onchain Cloud services. The SDK works alongside Filecoin Pin, a developer toolkit launched in October 2025. As the first developer toolkit built specifically for the Onchain Cloud, Filecoin Pin acts as a bridge, persisting temporary IPFS cached content directly onto Filecoin’s permanent, verifiable storage layer.

This integration allows developers to write smart contracts that interact directly with stored data. By using the Synapse SDK, applications can programmatically manage data storage and trigger payments directly on the blockchain. The setup is designed to eliminate the friction historically associated with negotiating and setting up storage deals on Filecoin, opening up the network to decentralized applications that require fast, verifiable data access.

The Economics of Warm Storage

The economic viability of this new architecture is currently anchored by Storacha’s Forge, the first Onchain Cloud service to go live. Offering IPFS-compatible warm storage alongside onchain proofs of data possession, Storacha has priced its service at $5.99 per terabyte per month. This rate serves as the initial benchmark for developers and infrastructure operators calculating the cost of warm storage on the network.

How other third-party services will price their offerings remains an open question. It is not yet established whether the $5.99 per terabyte rate will become the industry standard or if competitive market dynamics will force alternative pricing structures as more service providers enter the ecosystem ahead of the January 2026 mainnet launch.

Early Adopters and Use Cases

A group of early integrators is already testing the platform's capabilities on the testnet. These early adopters span several distinct sectors of the decentralized ecosystem, highlighting the broad target market for the network's storage capacity.

Among those actively experimenting with the Filecoin Onchain Cloud are:

• Ethereum Name Service (ENS) and the ERC-8004 community (Agent0), which are exploring how the warm storage layer can support decentralized identity systems.
• High-throughput data networks like KYVE and Monad, alongside security protocols like Safe.
• Decentralized data platforms and applications including Akave, Storacha, and Geo Podcasts.

By moving to a verifiable, programmable storage layer, these projects aim to keep their application data accessible and cryptographically secure without relying on centralized cloud providers. For the hardware providers supporting the network, this diverse roster of early testers suggests that the demand for programmable warm storage may extend far beyond traditional Web3 archiving.