Global Proof of Personhood
summary
World ID uses iris scans collected by the custom orb device to create privacy‑preserving identity credentials that prove uniqueness without names or emails, and it issues on‑device World ID tokens. Integration options include ID Kit for anonymous actions and Sign in with Worldcoin, returning a ZK proof containing the Merkle root and nullifier hash; proofs verify via developer API or on‑chain (on‑chain verification is currently experiencing issues). Templates for Next.js and smart contracts exist, and Superhack offers $20K in prizes for World ID integrations.
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chapters (21)
- 0:00Introduction
- 0:22What is World ID
- 1:03Designing World ID
- 2:26Why iris scans
- 3:51Worldcoin Orb role
- 4:34Self-custodial identity
- 5:16Privacy-first decentralized ID
- 5:37World ID use cases
- 6:21Sign in with Worldcoin demo
- 7:25Next.js integration
- 8:27Anonymous Actions explained
- 9:11IDKit integration
- 10:33Verifying World ID proofs
- 12:38On-chain security
- 14:45Smart contract setup
- 15:47On-chain verification steps
- 17:35Super Hack 2023
- 18:52Q&A with Ian
- 21:25Privacy and security concerns
- 23:14Smart contract events
- 25:04Closing remarks
