Masa Finance has launched the first soulbound identity protocol for the Ethereum mainnet, according to a Jan. 17 press release shared with Cointelegraph. The protocol will allow for standardized soulbound tokens to be minted on Ethereum for Know Your Customer verification, credit scores and other use cases.Soulbound tokens are tokens that cannot be transferred from one wallet to another. The concept was popularized via a blog post from Vitalik Buterin, who argued that these tokens could be used to signify governance rights for decentralized finance (DeFi) protocols or to prove that a person has attended an event.Speaking to Cointelegraph, Masa Finance founders Brendan Playford and Calanthis Mei argued that soulbound tokens will expand opportunities for DeFi users to build credit and get loans. Mei explained it as such:We want to help people tap into [an] on-chain credit system with a Web3 credit score, with the data sources that we have aggregated across Web2 and Web3 representing and helping people build their creditworthiness on-chain. We’re currently working with multiple lending partners in extending DeFi loans to those individuals who have minted a Masa credit score report.She emphasized that Masa soulbound tokens are not merely attached to a traditional credit score. The protocol goes beyond traditional finance to incorporate both Web2 and Web3 activity. Mei said that over 10,000 data points are used in a Masa credit score, including a user’s FICO score, Plaid transaction data for credit and debit cards, Web3 wallet transaction history, centralized exchange balances, and other data.Mei believes this system will lead to “risk-based underwriting” in DeFi, which she says has previously not been possible due to the lack of identity protocols on blockchain networks.The founders also said there is one other use cases currently available for the protocol. Aside from representing a credit score, the second use case for the protocol is .soul domain names. These are similar to ENS names, but with the added benefit that they can be linked to various Masa identity characteristics. Playford explained that “users can link different attributes, use their pseudonym to verify themselves, show that they’re verified in Web3 without doxing [their] full name, for example.”wo 80 / ch 501Related: Lukso co-founder discusses implications of digital self-sovereignty in Web3Playford noted that .sol domain names can be transferred from one wallet to another. However, the attributes associated with them will become unattached if the domain is moved. Therefore, users cannot “buy” the identity or credit score of another person.According to the founders, a third use case will be identity verification, a feature the company is releasing under the name “Masa Green.” It will allows users to mint a Masa Green token to prove their identity, which the company believes will help users to prove they are real humans, not bots. According to Mei, this will help to eliminate bots in play-to-earn games and other apps where the community wants only real humans to participate. The company says Masa Green will be available as a “fast follow within the coming weeks.”Masa is not the only soulbound token protocol to be implemented on a blockchain network. Binance has released its own version, called BAB, which can be used to prove a user’s identity. However, BAB is currently only available on BNB Chain. Masa appears to be the first soulbound token protocol available on Ethereum.