# Cardano Cross-Chain Report **Author:** *Emir Olgun* **Date:** *18 October 2023* ### Introduction We in the littlefish Foundation have conducted one of the most comprehensive researches about Cross-Chain capabilities in Cardano blockchain. This report will present **What is Cross-Chain**, **Cross-Chain Concepts**, and **Cross-Chain Services** that are currently operational and ongoing projects. ### What is Cross-Chain Cross-chain refers to the interoperability between different blockchain networks, allowing assets and data to be transferred seamlessly from one blockchain to another. This is crucial for enhancing the utility and scalability of blockchain applications. Various technologies like atomic swaps, oracles, sidechains, and blockchain bridges facilitate cross-chain transactions. The goal is to create a more interconnected and efficient ecosystem, where one is not limited by the capabilities or assets and services of a single blockchain. For some of these concepts we have written documents as they are complex technologies. [atomic-swaps-and-atomic-swap-on-cardano](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/atomic-swaps-and-atomic-swap-on-cardano "mention") [blockchain-bridges](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-bridges "mention") [blockchain-oracles](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-oracles "mention") [sidechains](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/sidechains "mention") ### Cross-Chain Services on Cardano We also have done research on all the Cardano cross-chain tools we found. Some of these projects are ready to be used, some are still in development and one tool called Microchains was functional but is dead. #### Cross-Chain Bridges These are the operational cross-chain bridges on Cardano: [milkomeda](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-bridges/milkomeda "mention") [milkomeda-protocol](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-bridges/milkomeda-protocol "mention") [indigo-protocol](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/cardano-defi/indigo-protocol "mention") [wanchain](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-bridges/wanchain "mention") [celer-and-nufi-bridges](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-bridges/celer-and-nufi-bridges "mention") Here are cross-chain bridges that are not operational: [microchains-network](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-bridges/microchains-network "mention") #### Cardano Oracles Here are the operational Cardano oracles: [charli3](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-oracles/charli3 "mention") Here are projects that announced they are working on Cardano but not yet deployed an oracle: [orcfax-and-chainlink-oracles](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/what-is-cross-chain/blockchain-oracles/orcfax-and-chainlink-oracles "mention") #### Sidechains [chromia-notes](https://tools.littlefish.foundation/littlefish-research-hub/all-docs/dao-tools/other-chains/chromia-notes "mention") ### Writers Remarks As of October 2023, there are not many services for Cardano cross-chain but with new services expected to come online, it looks promising. There are currently couple of available cross-chain bridges, one oracle, one atomic swap, and one expected sidechain. Even though the only oracle solution on Cardano, Charli3, does not offer much services, it has a strong and promising technical infrastructure and it definately has the potential to become dominant oracle service for Cardano. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://tools.littlefish.foundation/littlefish-research-hub/cardano-ecosystem/cardano-cross-chain-solutions/cardano-cross-chain-report.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.