Transacta
Transacta - Unified Cross-ZK NFT bridge and metadata relayer
Demo
About
It can be challenging to transfer NFTs across zk-EVM Layer-2 rollups due to different approaches and/or difference in interfaces. We have taken a step towards eliminating these barriers and removing friction by building a one-stop application for dispatching cross-rollup NFT operations.
How it's made
Transacta leverages the cross-chain messaging capabilities and bridging solutions currently available to transfer tokens between different networks. It can be considered a bridge aggregator that also offers features specifically designed for NFTs. In addition to EVM states bridging (tokenIDs, balances), transacta synchronizes NFT metadata and makes it available for **Polybase** clients. Transacta operates between the following chains: * Goerli testnet - acting as a main network for the NFT asset * **Scroll** testnet - EVM-compatible zero-knowledge rollup * **Polygon** zkEVM testnet - L2 zero-knowledge sidechain * **zkSync** Era - Layer 2 zkEVM NFT metadata relayer mirrors initial metadata stored using HTTPs webservice to decentralized [Polybase db](https://polybase.xyz/). As event sourcing engine [TheGraph's SubGraph](https://thegraph.com/en/) indexer gets used. See [Readme](https://github.com/OnGridSystems/ethglobal-hackathon-transacta) for more details.