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Octra’s mainnet alpha went live in December 2025, marking the first fully‑homomorphic‑encryption blockchain. Learn the launch timeline, tech stack and next
Octra’s mainnet alpha launched in December 2025, delivering the first general‑purpose fully homomorphic encryption (FHE) network for blockchain, AI and apps—a milestone that could reshape privacy‑preserving compute on public ledgers【2】.
| At a glance | |
|---|---|
| Mainnet launch | December 2025 |
| Testnet start | June 2025 |
| Prototype release | October 2023 |
| Core tech | HFHE (Hypergraph FHE) |
Octra was founded in 2021 and entered active development late 2022. An internal prototype was released in October 2023, followed by a public testnet in June 2025, and the mainnet alpha went live in December 2025【2】. The network’s codebase is primarily written in OCaml and C++, with tooling progressively open‑sourced via official GitHub repositories【2】.
Octra combines three layers: a blockchain ledger, a Hypergraph Fully Homomorphic Encryption (HFHE) compute layer, and isolated execution environments called “circles.” Circles host programs written in AppliedML, Rust, C++, OCaml or WASM, and store encrypted data. All data is transformed into vectors, encrypted, and processed using HFHE, with encryption and decryption requiring R1CS proof generation【2】. Node types—bootstrap, standard and light—automatically share storage and validation duties, enabling decentralized encrypted compute without exposing raw data【2】.
Octra’s mainnet alpha represents the first operational blockchain that can compute on encrypted data at scale, a capability that, if adopted, may redefine how privacy‑sensitive workloads are handled on public networks. The open question remains whether developers will build sufficient on‑chain applications to unlock the network’s full potential.
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Octra was founded in 2021, with an internal prototype released in October 2023, a public testnet launched in June 2025, and a mainnet alpha launched in December 2025.
HFHE is Octra’s proprietary fully homomorphic encryption scheme that allows the network to compute on encrypted data without decrypting it, enabling privacy‑preserving smart contracts and data processing.
Applications can be built in AppliedML (the native language), as well as Rust, C++, OCaml, or WebAssembly (WASM).
Circles are isolated execution environments that host programs and encrypted data storage, ensuring that code and data remain confidential during processing.
The OCT token powers the network by facilitating transactions, paying for computational resources, and rewarding validators, and is characterized as a non‑security token.