anonymity_kyc_short
TRANSCRIPT
Anonymous identity on the blockchain
Dr. Pavel Kravchenko
Tembusu Systems
About me
PhD in information security
Chief cryptographer at Tembusu Systems
Created an open-source academic course about cryptocurrencies
Electronic money = no privacy
REGULATION
Does identification mean traceability?
Can user anonymously store identity in the blockchain?
Where KYC info should be stored?
Can we keep regulators accountable?
A crypto-currency protocol
1. That enforces that all participants passed KYC
2. While transaction are still anonymous
3. It is decentralized – no central authority
4. Impossible to link transactions of the same user
5. Audit might be possible in case of the suspicious transaction
Is it for Bitcoin?
Solution overview
1. Unlinkable proof of identity is attached to each transaction
2. Stealth and one-time addresses are used
3. Decentralized identity verification
4. Revocation is possible
5. User controls private keys and identity
Many KYC environments (groups)
Germany
China USA
SwitzerlandUK
Processing nodes add transactions that contain POI to the ledger
Features
1. Registration process in independent from the payment network
2. As many groups as you need
3. Group manager selects own KYC policies
4. Possible to build groups where privacy is absolute
5. Actions of group manager are auditable
Can it work with Bitcoin/Ethereum?
Group signature
A Group signature scheme is a method for allowing a member of a group to anonymously sign a
message on behalf of the group
Conclusion
We are building a protocol/platform
That allows to create a global crypto-money network
Where users are subject to KYC
But are able to transact anonymously
