Union is a hyper-efficient, zero-knowledge interoperability layer that connects Appchains, Layer 1, and Layer 2 networks.https://union.build/en-ushttps://union.build/blog/introducing-private-bridging/https://union.build/blog/introducing-private-bridging/A next-gen ZK protocol that makes crosschain transfers fully private, auditable and scalable while bringing unmatched confidentiality to decentralized finance.Mon, 24 Nov 2025 00:00:00 GMThttps://union.build/blog/introducing-unions-new-look/https://union.build/blog/introducing-unions-new-look/Introducing Union’s New Look: refreshed brand identity, updated logo, and expanded visual system for the Union community.Fri, 14 Nov 2025 00:00:00 GMThttps://union.build/blog/mainnet/https://union.build/blog/mainnet/Union's public mainnet is officially live. The era of trustless, scalable, zk-based interop has begun.Thu, 04 Sep 2025 00:00:00 GMThttps://union.build/blog/base/https://union.build/blog/base/Union is integrating Base, to connect more people to the global onchain economy being built on Base.Wed, 27 Aug 2025 00:00:00 GMThttps://union.build/blog/u-tokenomics/https://union.build/blog/u-tokenomics/Union Foundation introduces U, the token of the Union network. Learn about the utility and tokenomics powering the Union network.Thu, 21 Aug 2025 00:00:00 GMThttps://union.build/blog/chain-abstracted-liquid-staking-union-token-escher/https://union.build/blog/chain-abstracted-liquid-staking-union-token-escher/Chain-abstracted architecture, developed and deployed by Escher and Union, will empower the Union token and its liquid staked counterpart from day one.Tue, 22 Jul 2025 00:00:00 GMThttps://union.build/blog/bitcoin-supercharged-network-bsn/https://union.build/blog/bitcoin-supercharged-network-bsn/The Union network will accelerate BTCfi adoption and be secured by crypto’s most decentralized and time-tested asset, Bitcoin.Thu, 17 Jul 2025 00:00:00 GMThttps://union.build/blog/auro-btc-union-native-bitcoin-lst/https://union.build/blog/auro-btc-union-native-bitcoin-lst/The new product will leverage Union's ZK-secured, trust-minimized interoperability to make the Union Bitcoin LST instantly available across ecosystems.Tue, 15 Jul 2025 00:00:00 GMThttps://union.build/blog/union-token-specification-erc20/https://union.build/blog/union-token-specification-erc20/The Union Foundation is officially announcing that the Union token will be ERC20 compatible, and issued on Ethereum.Wed, 25 Jun 2025 00:00:00 GMThttps://union.build/blog/crosschain-governance-by-union/https://union.build/blog/crosschain-governance-by-union/Union's truly crosschain governance system will enable staking & delegation across connected chains, starting with Ethereum.Wed, 18 Jun 2025 00:00:00 GMThttps://union.build/blog/union-record-groth16-trusted-setup-ceremony/https://union.build/blog/union-record-groth16-trusted-setup-ceremony/With 4,683 successful contributions and 4,590 still in the queue, Union breaks the record previously held by Manta Network.Mon, 09 Jun 2025 00:00:00 GMThttps://union.build/blog/fellows-esprezzo-ensemble-conduct-nativerse-thema-hyperweb-sphinx/https://union.build/blog/fellows-esprezzo-ensemble-conduct-nativerse-thema-hyperweb-sphinx/U Combinator was a success, leading to 7 projects and dozens of fellows building on and with Union.Thu, 05 Jun 2025 00:00:00 GMThttps://union.build/blog/launch-interop-provider-babylon-genesis/https://union.build/blog/launch-interop-provider-babylon-genesis/Union will launch a limited mainnet in support of the Babylon Genesis chain, Bitcoin Secured Networks like Corn and BOB, and Bitcoin LSTs such as uniBTC.Wed, 09 Apr 2025 00:00:00 GMThttps://union.build/blog/foundation-grants-escher-fluton-dextr/https://union.build/blog/foundation-grants-escher-fluton-dextr/Union Foundation is supporting builders who are boosting transaction activity, increasing TVL, and expanding Union’s coverage across different verticals.Tue, 11 Mar 2025 00:00:00 GMThttps://union.build/blog/u-combinator-incubator-cracked-labs/https://union.build/blog/u-combinator-incubator-cracked-labs/Announcing U Combinator: a Union-focused incubator program in collaboration with Cracked Labs. 50 teams compete to join the next cohort of Union Fellows.Tue, 18 Feb 2025 00:00:00 GMThttps://union.build/blog/union-testnet-9-live/https://union.build/blog/union-testnet-9-live/Testnet 9, the final Union testnet before mainnet, is live and ready for public testing. Battle test the network to ensure Union is ready for mainnet.Fri, 14 Feb 2025 00:00:00 GMThttps://union.build/blog/union-adds-babylon-chain/https://union.build/blog/union-adds-babylon-chain/Union will seamlessly transfer all Babylon assets and LSTs to every chain Union is connected to.Wed, 29 Jan 2025 00:00:00 GMThttps://union.build/blog/union-dashboard/https://union.build/blog/union-dashboard/Complete missions, unlock achievements, earn rewards, and compete on the leaderboard to grow the Union ecosystem.Tue, 21 Jan 2025 00:00:00 GMThttps://union.build/blog/union-nodekit-partner-fast-ibc/https://union.build/blog/union-nodekit-partner-fast-ibc/NodeKit’s Javelin superbuilder and Union’s Galois prover combine to speed up cross-chain transactions.Thu, 12 Dec 2024 00:00:00 GMThttps://union.build/blog/union-partners-avalanche-project-ridge/https://union.build/blog/union-partners-avalanche-project-ridge/Creating a secure IBC connection between Avalanche L1s and the Union network.Tue, 03 Dec 2024 00:00:00 GMThttps://union.build/blog/union-raises-12m-series-a/https://union.build/blog/union-raises-12m-series-a/Capital raised is earmarked for core team expansion, partner integrations, and ecosystem growth. Union’s Series A round brings the project’s funds raised to a total of $16M.Tue, 03 Dec 2024 00:00:00 GMThttps://union.build/blog/union-aori-cross-chain-intents/https://union.build/blog/union-aori-cross-chain-intents/Union and Aori are bringing high-frequency intent execution to the Union ecosystem. Intents served through the Union network will be directed to Aori for fulfillment.Mon, 02 Dec 2024 00:00:00 GMThttps://union.build/blog/union-rome-protocol-solana/https://union.build/blog/union-rome-protocol-solana/The collaboration will leverage Union’s infrastructure and the Rome SDK to bring decentralized interoperability to the Solana ecosystem.Tue, 26 Nov 2024 00:00:00 GMThttps://union.build/blog/risc-zero-x-union/https://union.build/blog/risc-zero-x-union/RISC Zero is collaborating with Union to optimize light client proof aggregation, combining the strengths of both technologies.Wed, 13 Nov 2024 00:00:00 GMThttps://union.build/blog/union-agoric-partner-orchestration/https://union.build/blog/union-agoric-partner-orchestration/As core contributors to the multi-chain movement, Union and Agoric will unlock a scalable future where thousands of chains can permissionlessly connect, communicate, and thrive.Thu, 07 Nov 2024 00:00:00 GMThttps://union.build/blog/union-xion-integrate-chain-abstraction/https://union.build/blog/union-xion-integrate-chain-abstraction/Hyper-efficient interoperability meets chain abstracted user experience, to pave the way for wide-spread consumer adoption.Wed, 16 Oct 2024 00:00:00 GMThttps://union.build/blog/participate-union-trusted-setup-ceremony/https://union.build/blog/participate-union-trusted-setup-ceremony/The Trusted Setup Ceremony is an opportunity for anyone to contribute to Union, and ensure Union’s ZK-based interoperability is secure and decentralized.Wed, 02 Oct 2024 00:00:00 GMThttps://union.build/blog/whale-sharks-reveal/https://union.build/blog/whale-sharks-reveal/Union has officially adopted the Whale Shark as its mascot, to symbolize its desire to grow and become the dominant interoperability provider in crypto.Fri, 13 Sep 2024 00:00:00 GMThttps://union.build/blog/union-native-bitcoin-ecosystem/https://union.build/blog/union-native-bitcoin-ecosystem/Union is partnering with Native to develop trust-minimized interoperability for the Bitcoin ecosystem.Tue, 03 Sep 2024 00:00:00 GMThttps://union.build/blog/now-open-source/https://union.build/blog/now-open-source/Union Labs is open sourcing the Union protocol, inviting builders to contribute to and permissionlessly integrate with Union.Wed, 14 Aug 2024 00:00:00 GMThttps://union.build/blog/berachain-stride-union-testnet/https://union.build/blog/berachain-stride-union-testnet/With the integration of Berachain and Stride into the Union Testnet App, new activities are revealed. Let the quest for Fur and Friendship commence.Wed, 31 Jul 2024 00:00:00 GMThttps://union.build/blog/arbitrum-partnership/https://union.build/blog/arbitrum-partnership/Union’s two-way interoperability solution will unlock liquidity flows across Ethereum L2s, EVM-compatible L1s, and Cosmos/IBC chains.Tue, 09 Jul 2024 00:00:00 GMThttps://union.build/blog/union-public-testnet/https://union.build/blog/union-public-testnet/Today, Union’s public testnet goes live. Go to app.union.build, connect your wallet, and start transferring assets.Wed, 26 Jun 2024 00:00:00 GMThttps://union.build/blog/stargaze-partnership/https://union.build/blog/stargaze-partnership/Union’s zk-IBC bridge will be used to transport NFTs for the first time between Ethereum and IBCThu, 16 May 2024 00:00:00 GMThttps://union.build/blog/aligned-layer-partnership/https://union.build/blog/aligned-layer-partnership/Union is set to enhance its zero-knowledge interoperability through a strategic collaboration with Aligned Layer.Fri, 26 Apr 2024 00:00:00 GMThttps://union.build/blog/polygon-integration/https://union.build/blog/polygon-integration/Union is plugging into the AggLayer, developed by leading L2 developer Polygon Labs, to facilitate message passing and asset transfers between the Polygon ecosystem and IBC-enabled chains.Thu, 18 Apr 2024 00:00:00 GMThttps://union.build/blog/lava-partnership/https://union.build/blog/lava-partnership/The campaign will incentivize participation in the public RPC infrastructure, encouraging community engagement and growth within the Union and wider interoperable ecosystems.Mon, 08 Apr 2024 00:00:00 GMThttps://union.build/blog/canto-partnership/https://union.build/blog/canto-partnership/Union’s zk-IBC bridge will be used for message passing and asset transfers between Canto and IBC-enabled chains, spurring ecosystem growth.Thu, 21 Mar 2024 00:00:00 GMThttps://union.build/blog/scroll-partnership/https://union.build/blog/scroll-partnership/Union is partnering with Scroll to transfer assets and messages from any IBC-enabled chain into Scroll through its fully trustless, decentralized, hyper-efficient zkIBC bridge.Thu, 07 Mar 2024 00:00:00 GMThttps://union.build/blog/consensus-verification/https://union.build/blog/consensus-verification/Union democratizes the fundamental Web3 mechanism of cross-ecosystem connection.Mon, 26 Feb 2024 00:00:00 GMThttps://union.build/blog/secret-network-partnership/https://union.build/blog/secret-network-partnership/Union and Secret Network partner for seamless and private InteroperabilityWed, 21 Feb 2024 00:00:00 GMThttps://union.build/blog/noble-and-movement-partnership/https://union.build/blog/noble-and-movement-partnership/Movement and Noble join forces with Union to transfer native assets across Celestia's modular stack.Thu, 11 Jan 2024 00:00:00 GMThttps://union.build/blog/seed-round/https://union.build/blog/seed-round/Today, we're thrilled to announce that we've successfully raised $4 million in seed funding to drive our mission of revolutionizing cross-chain infrastructure.Thu, 16 Nov 2023 00:00:00 GMT