Q-day for Blockchain — What’s Next?

What happens with signatures, Zero-Knowledge Proofs (ZKPs), multi-signatures and wallet addresses?

Some call it the greatest transition ever in the history of computing … the migration of blockchains to a quantum-robust world. Overall, the actual migration time will be measured in months, as the computation involved is so great. The migration times will typically relate to the blockchain type, and where Ed25519-based blockchains (eg Solana) will have an easier migration than those based on ECDSA (eg Ethereum and Bitcoin).

Circle — one of the leaders in blockchain technologies — recently published a new discussion paper on the migration towards quantum-robust methods [here]:

This aims to address the threats around the cracking of elliptic curve signature methods of ECDSA and Ed25519.

Non-interactive multi-signature schemes

A multi-signature approach to transactions allows for one or more users to split the private key, and then use the key splits to sign a transaction. Along with this, we can also aggregate signatures into a…