Today, we announce the CTR airdrop registration designed to make early adopters part of the Bitcoin economy and the Citrea Network. The snapshot for the CTR genesis airdrop was taken on May 5, 2026 at 00:00 UTC, midnight (the block 6919313). With the help of Human Tech and ZeruAI,

Today, we’re announcing $50 million+ in planned liquidity commitments and a ctUSD Pre-Deposit Vault to accelerate Bitcoin capital markets with deep cBTC and ctUSD liquidity. $50M+ liquidity commitments are slated to come from Galaxy Digital and other leading asset managers to enable Bitcoin capital activities at scale. This

Today, we introduce CTR, the coordination asset handing control of the Bitcoin economy back to its users. Bitcoin gave us something no financial system ever had: a trustless peer-to-peer electronic cash system. As Bitcoin established itself as the asset for censorship-resistant finance, the need for BTC in

Recent research [1] [2] has reignited the looming potential of quantum attacks on the very foundation of modern cryptography: the elliptic curves. As a layer secured by Bitcoin, Citrea shares the concern of the broader Bitcoin community that quantum computers could eventually break the elliptic curve cryptography Bitcoin relies on.

Today, we introduce the Citrea Foundation, an independent organization dedicated to supporting the growth and decentralization of Bitcoin’s programmable future. This marks a significant milestone for Citrea, bringing us closer to executing our vision of building the future of how the world interacts with Bitcoin. The core mission of

Bitcoin’s simplicity is what makes it the most secure and censorship-resistant monetary network. Providing privacy and capital-efficient financial markets should be handled by an execution layer that preserves Bitcoin’s guarantees.   There is a burning need for private Bitcoin applications, Bitcoin savings accounts, and Bitcoin capital markets.

2025 was a year of ecosystem development and community growth for Citrea. From launching testnet campaign and incubating the first wave of ₿apps, to refining our bridge infrastructure and preparing for mainnet, Citrea has firmly established itself as Bitcoin’s application layer. As we prepare to move into 2026, the

Today, we’re announcing the successful completion of Citrea Risc0-to-BitVM Trusted Setup Ceremony. This milestone marks the first-ever trusted setup ceremony dedicated to the ZK proofs that BitVM will verify on Bitcoin.  Clementine, Citrea’s BitVM‑based bridge design, optimistically verifies ZK proofs on Bitcoin without requiring

At the core of Citrea's construction is Clementine Bridge, Citrea's BitVM-based bridge design. With this design, Citrea expresses a zero-knowledge proof verifier on Bitcoin and builds a trust-minimized peg mechanism around it. If challenged, Bitcoin (via BitVM) checks a compact proof on-chain.

Today, we are introducing Tangelo, the final Citrea testnet fork before mainnet launch. This upgrade includes our final set of testnet improvements as we prepare for mainnet.  The Tangelo upgrade incorporates all audit fixes and introduces improvements to our fee mechanism. In short, Citrea testnet is now cheaper and more

Over the last few months, we’ve been running an invite-only testnet campaign called Unfreeze ₿apps for Citrea Mainnet.  We saw 15 different ₿apps join ranging from DEXs, money markets, aggregators, prediction markets,and more. Throughout the campaign, both the participating projects and our team at Citrea gained valuable

After more than two years of development, we’ve reached one of the biggest milestones yet on our road to mainnet: we’ve completed our audit phase for both our rollup (Citrea) and our BitVM-based bridge, Clementine. This achievement marks one of the final steps on our road to

Today marks one year since Citrea Testnet went live, and what a year it’s been. In just 12 months, Citrea has grown into the leading Bitcoin application layer, with 30+ ₿apps joining our ecosystem, $14M raised in a round led by Founders Fund, and Citrea data dominating Bitcoin Testnet4.

Bitcoin’s application layer is about to hit mainnet. Citrea has been on public testnet for the past 9 months and steadily building its ₿apps ecosystem. Now, we’re nearing our mainnet launch and we want our community to explore what we’ve built.   We’re kicking off Unfreeze ₿apps

We're officially announcing Citrea's road to mainnet. After more than two years of development, we’re now entering the final stages before launch. Citrea's launch will deliver the first Bitcoin bridge verified by the Bitcoin Network and the first programmable execution environment fully secured

Introduction to BitVM For years, executing custom computations on Bitcoin has remained a challenging research topic. In October 2023, Robin Linus introduced BitVM, an approach that proposed expressing arbitrary computations using Boolean circuits. This was theoretically sound because all Boolean expressions can be built from primitive logic gates—primarily AND

“We have proposed a system for electronic transactions without relying on trust.” - Satoshi Nakamoto, 2008. Bitcoin was introduced as a liberating technology for borderless and censorship-resistant money. Yet in 2025, Bitcoin finds itself surrounded by custodians and increasingly treated as a passive store of value. The Bitcoin network is

Introduction Today, we’re introducing our approach to improving Clementine using Garbled Circuits and Transfer of Ownership Protocol (TOOP) by constructing a SNARK verifier circuit with logic gates. We're also announcing the open-sourcing of this garbled SNARK verifier to help accelerate research into Bitcoin bridges that don&

Today, we’re introducing Tangerine, the second ever Citrea testnet fork. This upgrade brings our most significant changes yet — across proving performance, protocol security, account abstraction, and developer tooling. Tangerine represents a feature-complete version of the Citrea’s state-transition-function, meaning future upgrades will likely consist only of

Citrea’s core value proposition is to enable greater expressivity and increase the utility of Bitcoin blockspace without ever leaving Bitcoin. To achieve this, Citrea keeps data availability and verifiability on-chain, on Bitcoin. Consequently, Citrea inscribes its state changes to Bitcoin and generates a zero-knowledge proof that asserts