Steganography is a solution for covert communication and blockchain is a p2p network for data transmission, so the benefits of blockchain can be used in steganography. In this paper, we discuss the advantages of blockchain in steganography, which include the ability to embed hidden data without manual change in the original data, as well as the readiness of the blockchain platform for data transmission and storage, which eliminates the need for the Steganographer to design and implement a new platform for data transmission and storage. We have proposed two algorithms for steganography in blockchain, the first one is a high-capacity algorithm for the key and the steganography algorithm exchange and switching, and the second one is a medium-capacity algorithm for embedding hidden data. Also, by reviewing the previous three steganography schemes in blockchain, we have examined their drawback and have showed that none of them are practical schemes for steganography in blockchain. Then, we have explained the challenges of steganography in blockchain from the steganographers and steganalyzers point of view.

翻译：在本文中,我们讨论了块链结构学的优点,包括不手工修改原始数据而嵌入隐藏数据的能力,以及块链平台为数据传输和存储的准备状态,这就消除了Stegrapher设计和实施数据传输和存储新平台的需要。我们提出了块链中两套构思法,第一套是钥匙和切换色谱法交换和切换的高能力算法,第二套是隐藏数据的中等能力算法。此外,我们审查了块链中前三套色谱学办法,检查了它们的背图,并表明其中没有任何一种是链条中切线法的实用计划。然后,我们解释了从导线和导线分析角度对链中块链中切入法的挑战。