Building a Safer Digital World using Concordium with Zero-Knowledge Proofs
summary
Concordium combines an on‑chain identity layer with zero‑knowledge proofs so wallets can emit verifiable proofs (age, license, legal entity) without revealing raw data; smart contracts are written in Rust and the chain finalizes blocks in 2.1–2.2s. Privacy tech used includes Sigma protocols for interactive proofs and bulletproofs for range/age checks; demo shows a browser wallet generating an age‑over‑18 proof and letting the user into a site. Identity disclosure exists for court‑ordered de‑anonymization.
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chapters (13)
- 0:00Concordium and blockchain privacy
- 1:29Crypto Anarchist and Cypherpunk manifestos
- 5:45Discrete logarithm and key exchange
- 11:03Blockchain basics and Bitcoin
- 14:32Zero-knowledge proofs history and Alibaba cave
- 18:48Zero-knowledge proofs in blockchain and scalability
- 21:19Sigma protocol deep dive
- 24:54Bullet proofs for age verification
- 26:41How Concordium works
- 29:07Concordium’s identity layer
- 34:44Live demo age verification with ZK proofs
- 37:32Compliant apps with Concordium’s ID layer
- 38:44Q&A
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