Slim Chain and Dependability

The slim chain is proposed in this paper in an effort to address and resolve the scalability issue of blockchain-based crypto computing by managing the volume of the blockchain itself. An adequate balancing of computation across on/off-chain is expected to relieve the spatial and temporal overhead of managing the otherwise exponentially growing size of the blockchain by making the blockchain slimmer as much as the volume migrated and kept off-chain than the conventional, as referred to as a slim chain in this paper. As an initial design, a novel theoretical model is proposed to assure the efficacy of the proposed slim chain with specific respect to the dependability from a single transaction's standpoint in a stochastic manner. It is demonstrated that the dependability can be traced with respect to whether the transaction of concern is to write off the chain or read back from off the chain to on-chain, as the transactions writing off the chain are more dependable than reading from off the chain without loss of practicality, as well as the crypto rate and the IPFS rate as IPFS (Inter-Planetary File System) is an off-chain storage considered in this research.