The current blockchain deployment solutions rely on a continuous connectivity network. Unfortunately, the delay tolerant network does not meet this condition. Therefore, we construct a novel blockchain transaction framework with discrete token negotiation called DTNB, which can be deployed on the delay tolerant network to provide transaction services. Specifically, we present the structure of add-chains by modifying the existing block structure. Then, we design a mining qualification determining scheme to achieve fair transactions, including discrete token generation algorithm and mining qualification attribution algorithm, and this scheme avoids the problem that nodes with more stakes in the PoS and DPoS algorithms can obtain mining qualifications with a higher probability. Furthermore, we present two mining schemes and also design a fork processing algorithm, which ensures that blocks on the add-chain generated by the local network can be appended to the main chain with the equal probability. Finally, we design the second consensus algorithm to avoid the problem of false and repeated transactions of the blocks on the add-chains in the local network. Theoretical analysis shows three properties of DTNB, including safety, reliability and activeness, and the experimental simulations demonstrate DTNB has advantages in throughput, block generation time and fork rate.

中文翻译：

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DTNB：用于延迟容忍网络的具有离散令牌协商的区块链交易框架


当前的区块链部署解决方案依赖于连续的连接网络。不幸的是，延迟容忍网络不满足这个条件。因此，我们构建了一种新颖的离散代币协商区块链交易框架DTNB，可以部署在延迟容忍网络上提供交易服务。具体来说，我们通过修改现有的区块结构来呈现附加链的结构。然后，我们设计了一种实现公平交易的挖矿资格判定方案，包括离散代币生成算法和挖矿资格归属算法，该方案避免了PoS和DPoS算法中权益较多的节点能够以较高概率获得挖矿资格的问题。此外，我们提出了两种挖掘方案，并设计了分叉处理算法，确保本地网络生成的添加链上的块可以等概率追加到主链上。最后，我们设计了第二种共识算法，以避免本地网络中附加链上的区块出现虚假和重复交易的问题。理论分析显示了DTNB的安全性、可靠性和活跃性三大特性，实验模拟表明DTNB在吞吐量、出块时间和分叉率方面具有优势。