Cyber•Fund is introducing a series of publications that provide an overview of some of the best speaker topics we’ve hosted at our meetups. Sami Makela — a senior core developer currently working on the TrueBit project — spoke about how TrueBit is being used to verify off-chain computations, and provides a “computational boost” of sorts to Ethereum based smart contracts.

TrueBit is a system built on the Ethereum blockchain that conducts off-chain transactions.

On-Chain Transactions

In order to run a smart contract the user must provide verified calculations. Each particular block includes transactions, and in turn each node conducts the transactions. If a miner does not function correctly, the block will be rejected. This model holds a few limitations, the most prominent of which is the limit of gas consumed for every block. This particular amount of gas can be insufficient to accomplish a given computational task, and drawn-out calculations are expensive on Ethereum. TrueBit provides the user with more effective off-chain solutions.

Off-Chain Computing

This form of computing begins calculating a square root. It often takes a great deal of time to calculate a square root with a smart contract. If these types of calculations take place off-chain, then an answer is immediately generated and can be used to automatically execute commands. The use of an ordered, linked-list in addition to off-chain calculating simplifies the overall implementation of data structures.

Image via Shuttershock

TrueBit

The TrueBit project splits calculations into simpler steps; each of which determines the next one. This reduces the number of additional calculations for every new stage. TrueBit uses the following tools:

Advanced JavaScript

WebAssembly

Program Collection in WebAssembly

Empscripten

Off-Chain Data Storage

IPFS, Swarm

For more information please contact: [email protected]

The above references an opinion and is for information purposes only. It is not intended to be investment advice. Seek a duly licensed professional for investment advice.