【Technology039】YODA-Enabling computationally intensive contracts on blockchains

【Technology039】YODA-Enabling computationally intensive contracts on blockchains with Byzantine and Selfish nodes
Barack

——Main contributions: Miracle, RICE, implementation and security analysis.

This paper mainly focuses on the dilemma caused by computationally intensive smart contracts (CIC). The problem lies in that if all miners verify CICs, the validation time will be long; but if not, the security may be ruined.

YODA executes Computatiaonlly intensive transactions (CITs) off-chain, i.e. only a subset of nodes verify them. As for non-CITs, they are executed on-chain, i.e. by all miners.

The on-chain solution is identical to legacy. For the off-chain solution, some nodes which have deposited a sum of the stake will form a stake pool (SP) and a small execution set (ES) will be picked up from it. The ES will verify the CIT.

The process can be divided into 5 steps: S1 - CIC transaction deployment, S2 - sortition check and RICE of CICs, S3 - commitment and release, S4 - MiRACLE for CICs, S5 - reward distribution and cleanup.

2019/10/12