![FI-nchain-solves-the-back-to-genesis-problem-for-token-verification-on-any-blockchain-min 4 minute read about solving back to genesis using a transaction chain proof from nChain](https://coingeek.com/wp-content/uploads/2022/08/FI-nchain-solves-the-back-to-genesis-problem-for-token-verification-on-any-blockchain-min-380x188.jpg)
nChain solves the ‘Back to Genesis’ problem for token verification on any blockchain
All token protocols have suffered from the "traceback problem" or "Back to Genesis"—how do you prove a token is valid through a string of transactions? nChain finally got a solution for that.