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Altcoin Blockchain

Chainlink Verifiable Randomness / Controlled Chaos To Enhance Security

Posted On May 13, 2020 Taha Zafar 0

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Chainlink announced the launch of on-chain “Verifiable Random Function (VRF)” on May 12. The newly released function can be integrated easily with the provided developer documentation. It will allow and accelerate the development of blockchain related gaming, security, gambling, general prize draws, assignment of tasks/duties, selection of representative samples and layer two protocols among others. The newly launched VRF system offers the advantage of being trustless, immune to manipulation and exploitation by network miners, accessible and compatible with smart contracts, compared to existing methods.

1/ We’re excited to launch a Verifiable Random Function (VRF) capability. Smart contract developers can now access verifiable randomness through #Chainlink oracles, enabling a new set of blockchain applications in gaming, security & layer-2 protocols. https://t.co/NBLPuzJyXE— Chainlink – Official Channel (@chainlink) May 12, 2020

The Chainlink VRF will be initially used by Pool Together, the no-loss savings game where users deposit funds, to have the system select a random winner to award the earned interest on those funds, on a daily/weekly basis. The funds themselves remain intact and can be withdrawn later. Now PoolTogether will be able to provide users with more authenticity, by using a secure and verifiable source of randomness to decide on winners.

2/ Popular no loss savings game @PoolTogether_ is using #Chainlink’s VRF to improve the decentralization of its winner selection process. Verifiable random number generation allows PoolTogether users to trust that winners are indeed selected at random. https://t.co/CJDOEseqhy— Chainlink – Official Channel (@chainlink) May 12, 2020

What Is Verifiable Randomness Function (VRF)?

The Chainlink newly introduced on-chain Verifiable Random Function (VRF) is an implementation of Goldberg’s function. It provides a tamper proof source of unbiased randomness, beyond the control of the smart contracts, DApps etc. integrating it. It can render any manipulation of the randomness impossible, by making the system provably fair and equally uncertain to all participants.

Chainlink now goes one step further, it supplies true randomness to blockchain entities, along with verifiable cryptographic proofs, which show that the outcome was truly unpredictable beforehand. The random in VRF means that the outcome was entirely unpredictable and thus uniformly distributed to anyone, who didn’t know the master or seed key, which was used for generating verifiable randomness.

How Is Verifiable Randomness Function (VRF) Generated?

A smart contract can request the Verifiable Random Function (VRF) from Chainlink, by a providing a seed. The seed is unpredictable to the oracles generating randomness and the results are sent on-chain. Each oracle uses its own secret key when providing VRF. After the random number is sent on-chain, it is verifiable using the oracle’s public key and the application’s seed. Since blockchain is by its nature based on verification, smart contracts can choose only to consume data that has been verified.

The method is safe and secure, with nodes being incentivized (rewarded with fees) to provide true randomness. If a compromised node gives biased or manipulated data, the on-chain cryptographic proof would fail and node will be financially penalized, using Chainlink upcoming staking facility. Also, users will no longer rely on such nodes, which can’t verify their randomness. In the worse case scenario that a node goes offline or withholds a single request, it won’t be used by the Chainlink mechanism anymore, become removed from future queries and lose substantial profits. As the system usage increases, the fees provided by contracts for such data will also increase, further increasing incentives for working with the system.

Chainlink VRF – What Comes Next?

Chainlink will further enhance the scalability and decentralization of the oracle networks, by introducing threshold signatures. The move will also benefit the availability and cost-effectiveness of VRF. It will also increase the number of nodes providing verifiable randomness exponentially, by allowing the wider Chainlink ecosystem to participate in providing randomness, being highly incentivized and thus more secure. Also, Chainlink is engaged in research and collaboration with academic communities and blockchain developers, to improve the VRF function further in the future.

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Disclaimer: The authors of this website may have invested in crypto currencies themselves. They are not financial advisors and only express their opinions. Anyone considering investing in crypto currencies should be well informed about these high-risk assets.

Trading with financial products, especially with CFDs involves a high level of risk and is therefore not suitable for security-conscious investors. CFDs are complex instruments and carry a high risk of losing money quickly through leverage. Be aware that most private Investors lose money, if they decide to trade CFDs. Any type of trading and speculation in financial products that can produce an unusually high return is also associated with increased risk to lose money. Note that past gains are no guarantee of positive results in the future. 

#Blockchain Security#controlled chaos#Verifiable Randomness Function (VRF)



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