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Human Protocol Is Bringing ‘CAPTCHA to Earn’ to Ethereum

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Human Protocol, the backbone for anti-bot system hCaptcha, has launched a CAPTCHA web app allowing users to get paid in HMT for solving image-annotation challenges.

Many users will recognize hCaptcha on websites as that thing that forces you to identify fire hydrants in a picture grid. Google’s reCAPTCHA is the market leader though the decentralized upstart is gaining ground.

The service is used by websites including the Canadian government, video-on-demand streaming service Rakuten, research and advisory firm Gartner and the classifieds website Craigslist.

Related: Human Protocol Expands hCaptcha Tool, Launches Wallet to Make AI Smarter

The app gives users the chance to earn token rewards for proving their humanity while also refining the computer-vision algorithms that power artificial intelligence (AI) technologies, Human Protocol said in a press release.

Ethereum mainnet launch

The Human Protocol Foundation also announced the launch of its protocol for “building decentralized marketplaces” on the Ethereum mainnet. Human was previously live on a private Ethereum network.

“Starting today, the protocol will be able to support the creation and completion of jobs on-chain while broadening the audience that’s able to contribute to AI and ML [machine learning] technologies,” said Harjyot Singh, Human Protocol’s director of technology.

In June, Human Protocol launched a tool that lets developers plug its “Proof-of-HUMANity” feature into cryptocurrency wallets.

Related: Protocol Hosting Google reCAPTCHA Competitor Expands to Polkadot

Last December, the project announced an expansion beyond Ethereum to the Polkadot parachain Moonbeam.