Mainstream attention on financial privacy comes in waves, often driven by technological change (Exhibit 1). The first wave came in the 1970s as computers facilitated the digitization and automation of financial record keeping.1 The second wave in the 1990s paralleled the growth of the internet and concerns about online privacy. We believe a third wave has started: a sustained shift in public and investor focus on financial privacy, prompted by the rise of AI.
AI tools seem all but sure to create the need for new privacy protections in many parts of the economy, but the issue is especially pressing for public blockchains, which are transparent by default. On the Bitcoin network, every transaction is visible on the public ledger. If this can be connected with offchain information, it could be used to de-anonymize user addresses—a risk mentioned in the Bitcoin white paper. This was possible before AI, but the technology could make blockchain address labelling more effective and more widely available.
We think Zcash will be one part of the solution. Shielded Zcash transactions, using the power of zero-knowledge cryptography,2 hide both transacting addresses and the amount being transferred. For users that prioritize privacy, this could become a “must have” feature.
Key Takeaway: We expect AI to create new threats to financial privacy, and to motivate a search for new solutions. Zcash, a Bitcoin-like digital currency with additional privacy features, may be one of those solutions.
Exhibit 1: Mainstream attention on financial privacy comes in waves
In addition to new technology, changes in US law also affected public perceptions about financial privacy in the 1970s. The key legislation bookended the decade: the Bank Secrecy Act of 1970, which required banks to retain customers’ (now digital) records, and the Right to Financial Privacy Act of 1978, which required government agencies seeking banking records to go through specified legal channels.
See the appendix in our Zcash primer on Zero-Knowledge Proofs, SNARKs, & STARKs.